Service ready to print (1)

BUILDING SERVICES (ARC 2423)
PROJECT 2 Case Study and Documentation of Building
Services Systems
SOLARIS DUTAMAS, 
PUBLIKA
NAME: TAN KAI CHONG 0314223
CHEAH TECK WEI 0315215
YAP KAR JUEN 0313737
TSANG HAO REN 0315753
PUA ZHI QIN 0314073
CHEW UNG HENG 0315397
TUTOR: MR. SIVARAMAN KUPPUSAMY
Page of1 96

CONTENT
1. ABSTRACT 3
2. ACKNOWLEDGEMENT 3
3. INTRODUCTION 4
4. FIRE PROTECTION SYSTEM 5
4.1 Introduction
4.2 Literature Review
4.3 Active Fire Protection System
4.4 Passive Fire Protection System
4.5 Conclusion
5. MECHANICAL TRANSPORTATION SYSTEM 34
5.1. Introduction
5.2. Literature Review
5.3. Case Study
5.4. UBBL Requirement
5.5. Conclusion
6. AIR CONDITIONING SYSTEM 60
6.1 Introduction
6.3 Case Study
6.4 Air Handling Unit Component
6.5 Fan Coil Unit
7. MECHANICAL VENTILATION SYSTEM 77
7.1. Introduction
7.2. Literature Review
7.3. Case Study
7.4. Conclusion
8. REFERENCES 96
Page of2 96

1.0 Abstract
This research report will analyse the details of the services present in Solaris
Dutamas such as ﬁre protection system, water supply system, sewerage and sanitary
system, air-conditioning and mechanical ventilation system, electrical system and
mechanical transportation system. The component and the functions of these systems are
conducted to further understand the important of the arrangement of these systems in a
building’s operation. The report will be concluded by generating through our understanding
of these services in regards to the Uniform Building By-Law, Malaysian Standards
requirements as well as other relevant rules and regulations.
2.0 Acknowledgement
We would like to extend our deepest gratitude to each individual that has helped
and assisted us in completing this research report. A special thanks to the person in
charge, Mr.XXX who guide us throughout the site visit despite having a busy schedule
packed with meetings and gave us the permission to access the building for site visit. We
can really see him putting in a lot of effort to give us the knowledge and better
understanding of the services in the Publika.
Despite walking around the mall from the inside to out and sweating together, he still
smiles and continue providing us sufﬁcient information for our research report. Not only
that, we would also like to thank each member that has put in effort in cooperating with
each other, especially those who provided transportation to the site. It was a successful
project with great teamwork.
Page of3 96

3.0 Introduction
Publika Mall
Publika is an upscale neighbourhood shopping mall located in Solaris Dutamas, Sri
Hartamas: it is a sprawling up-and-coming residential development. The creative and artsy
complex has a number of high-end clothing boutiques, novelty stores and F&B venues.
The design of building is very modern with steel and glass art pieces hanging from the
ceiling, a skylight that lets in plenty of natural light, geometric, wire benches and small
stores with high-quality merchandise. Publika also plays host to a variety of entertainment
offerings such as art galleries (Galeri Chandan and Sugars Art Centre, park and spas
(Hammam Spa).
Page of4 96

4.0 Fire Protection System
4.1 Introduction
The main analysis of this chapter is about the fire protection system in Publika, Kuala
Lumpur. Fire protection is the study and routine of mitigating the undesirable impacts of
conceivably destructive fires to reduce the risk of life. It includes the study of the
behaviour, compartmentalisation, suppression and investigation of fire and its related
emergencies, as well as the research and development, production, testing and
application of mitigating systems. Building must be built as per the variant of the
construction standard that is in actuality when an application for a building grant is made.
In the event of fire emergencies, Firefighters, fire investigators, and other fire prevention
personnel called to mitigate, examine and gain from the harm of a flame. Lessons gained
from fires are applied to the composing of both construction standards and flame codes.
Fire is the source that can be easily extinguished by removing one of the factors inhibiting
the chemical reaction of the combustion process. Hence the life safety of occupants of
building must always be priority and this can be achieved by minimum fire protection in
respect of the various basic aspects of:
Page of5 96

• Means of escape for occupants/evacuation
• Spread of fire within building, from one building to another/passive containment
• Means of detection and extinguishment of fire; active intervention & access for fire
fighting and rescue
There are consists of two general essential fire protection system which are active and
passive fire protection system. Active fire protection contains manual and automatic
detection and suppression of fires, such as fire sprinkler systems and fire alarm systems.
Whereas passive fire protection consists of the installation of firewalls and fire rated floor
assemblies to form fire compartments intended to limit the spread of fire, high
temperatures, and smoke.
4.3 Active fire protection system
Active fire protection system is an approach or a process of protecting a building or
a structure from a fire by using the methods of applying manual or automatic operated fire
mechanical system such as fire alarms, detector (heat/smoke), rising mains, hose reels,
fire telephones, CO2 fixed installation, automatic sprinklers and smoke spills systems to a
warning of an outbreak of fire and the containment and extinguishment of fire. Besides, the
provision of adequate and suitable facilities to assist rescue and fire suppression
operations are also within the active fire defence strategies. The benefits of fire protection
system are freedom and permitted in designing and innovative is encouraged. These
system have saved thousands of live over the years and have been a successful tool
against fire.
According to Nulifire (2014), the overall aim of active system is to extinguish fire by:
• Detecting the fire early and evacuating the building
• Alerting emergency services at an early stage of the fire
• Control the movement services at an early stage of the fire
• Suppress and starve the fire of oxygen and fuel
Various systems in active fire protection
1. Fire detection systems and alarm devices
• Smoke Detectors
• Fire Alarm Bell
• Horn Loud Speaker
•
Page of6 96

2. Fire Control Room
• Fire Control Panel
3. Fire Intercom System
• Master Control Console
• Remote Control Handset
• Fire Break Glass Call Point
• Manual Pull Station
• Fireman Switch
4. Emergency Lighthing
5. Water-based systems
• Dry Riser
• Automatic Sprinkler System
• Pumps
• External Fire Hydrant
• Water type portable ﬁre extinguisher
• Hose Reel System
6. Non-water based systems
• Aerosol Fire Suppression System
• Portable Fire Extinguisher
• Carbon dioxide system
Page of7 96

Fire Detection Systems and Alarm Services
4.3.1 Smoke Detector
A smoke
detector is a
device that
senses smoke,
typically as an
indicator of fire
positioned on
the ceiling on
every floor. Commercial security devices issue a signal to a fire alarm control panel as part
of a fire alarm system. Smoke detectors are classified into two types which are
photoelectric and ionization smoke detector. The type of smoke detectors used in Publika
is photoelectric smoke detector. It accumulates data from its smoke detecting component
and convert it into digital signals. To settle on an alarm choice, it looks at the data to
chronicled perusing and time designs. They are powered by a focal flame caution
framework which is driven by building force with battery reinforcement.
Page of8 96
UBBL-‐SECTION
225
(1)

Every
building
shall
be
provided
with

means
of
detecGng
and
exGnguisher

fire
and
alarms
together
with

illuminated
exit
signs
in
accordance

with
the
requirements
as
specified
in

the
Tenth
Schedule
to
these
By-‐Law
SchemaGc
diagram
of
smoke
detector
system

4.3.2 Heat Detector
The heat detector above is a Optomechanical type which contain one or more fibre optic
cables separated by a heat sensitive insulator and protected by an outer sheath. A focused
light signal is passed through the fibre optic cable. When exposed to heat, the heat
sensitive insulator changes state from a solid to a molten state which has the effect of
degradation or discontinuation of the focused light signal. The signal change is monitored
by a device which then would actuate an alarm.
There are two methods for detecting fire from the presence of heat:
• Fixed temperature heat detectors operate when the ambient temperature increases
sufficiently to predetermined level where the heat detector will operate
• A rate-of-rise heat detector operates when the ambient temperature increases over
time equal to or greater than the rate of change the detector was manufactured to
operate.
Page of9 96

4.3.3 Fire Break Glass Callpoint
Manual fire alarm activation requires human intervention, as distinct from automatic fire
alarm activation such as that provided through the use of heat detectors and smoke
detectors, which then sounds the evacuation alarm for the relevant building or zone. It is,
however, possible for call points to be used in conjunction with automatic detection as part
of an overall fire detection and alarm system. Systems in completed buildings have the
tendency to be wired in and to include a control panel.
Below are some regulations for the correct positioning of call point (The Safety Centre,
2011):
• Call points should be located on all final exits, all storey exits. In other words,
entrances stairwell and also consideration should be taken to locating call point
units near to any high risks for special hazards
• The mounting height of call points should be 1.4 metres above the floor level and
call points should project by 15mm from the wall which allows to be seen from the
side.
• For high risk areas and special hazards areas a person should have to travel no
more than 25 metres to reach the nearest manual call point
• Call point should be distributed in a building social no one need travel any more
than 45 metres to reach the nearest call point.
Manual Key Switch
Page of10 96

Manual key switch box are normally located where restricted access is required such as
genset room, TNB room and LV room. Occupant can immediately activate the key switch
box while the room is on ﬁre. Testing on the manual ﬁre alarm box will be taken annually.
Telephone Bomba Api
Page of11 96

4.3.4 Fire Alarm Bell
The Fire Alarm Bells in Publika are activated by the smoke detectors and heat detectors to
alert the people throughout the buldings. The fire alarm bell functions through the
electromagnet. The working theory of it is actually this way. When an electric current is
imply, it will produce a repetitive buzzing sound over and over again until the certain time.
There are two different types of alarm bell:
Vibrating type-Ring continuously power supply is turned off.
Single stroke type-When power is supplied, the bell will ring once and stop and will not
ring again until the power turned off and on again.
Page of12 96
UBBL,
SecGon
237
:

• Fire
alarm
shall
be
provided
in
accordance
with
enth
Schedule
to
these
by-‐Laws.

• All
premises
and
building
with
gross
floor
area
excluding
car
park
and
storage
area
exceeding

9290
square
meters
or
exceeding
30.5m
height
shall
be
provided
with
two-‐stage
alarm

system
with
evacuaGon
(conGnuous
signal)
to
be
given
immediately
in
the
affected
secGon
of

the
premises
while
an
alert
(IntermiWent
signal)
be
given
adjoining
secGon.

• Provision
shall
be
made
for
the
general
evacuaGon
of
the
premises
by
acGon
of
a
master

control.

A research, we found that Publika is using the continuous type of fire alarm bell.
Continous bells have a components inside which utilizes an electronic loop got back to a
solenoid to force a mallet. At the point when the mallet backtracks, it separates the circuit
and bringing on the solenoid forward to give up, sending the sledges into the gong and
ringing it. When the hammer move forwards, it reconnects the circuit, which pulls the
sledges back once more. It proceeds with this cycle until the force is detached.
The alarm bell is located at about 1200mm from the manual break glass and
2700mm from ground level. When the glass breaks and the alarm is triggered, the person
in charge will check via cctv or send someone to check if the fire alarm is real or false
alarm. If it is false, the person will immediately close the valve on the sprinkler system. The
manual break glass is placed around the building so that it is easily accessible by people
where a fire occurs
Page of13 96

4.3.5 Fire Control Room and Control Panel
A fire control room shall be provided for all commercial buildings and apartment uildings.
As fire department stated that the exterior door shall be full size and obviously marked
‘Fire Control Room’ with minimum 3” letters different in colour to their background. The
room must be provided with permanent and emergency lighting. Also, it stated that two
keys of each of the following shall be located in an approved Knox box attached straight
adjacent to each fire control room, fire control room, manual pull stations, fire alarm control
panel, breakaway lock for PIV and building entrance keys.
Fire Control panel is the main controlling component of the alarm system and fire
detection. The panel obtains information from automatic and manual fire alarm devices
and transponders. At the time, the control panel will provide transmission of power to the
notification appliances and deliver condition of devices, sensor or transmitter connected to
the control unit. There are four kinds of panels, addressable control panel was found in
Publika. Addressable control panel is a more advanced way of providing fire alarm
protection. The panel can monitor several hundred devices depending on the protocol
used. It engage one or more Signalling Line Circuit.
Page of14 96
UBBL-‐SECTION
238

Every
large
premises
or
building
exceeding
30.5
meters
in
height
shall
be
provided
with
a

command
and
control
center
located
on
the
designated
floor
and
shall
contain
a
panel
to

monitor
the
public
address,
fire
brigade
communicaGon,
sprinkler,
water
flow
detectors

fire
detecGon
and
alarm
systems
and
a
direct
telephone
connecGon
to
the
appropriate
fire-‐
staGon
by-‐passing
the
switch
board.

4.3.6 Fireman Intercom System
Fireman Intercom System provides a two way communication between remote areas and
the ﬁre command centre in a building. The system consist a master control console and
remote control handsets are located at the designated areas.
Master Control Console and Remote Control Handsets
According to the research, the master control console should be comprises a master
handset, a system control module and zone control module. The master handset is used
to interconnect with the remote handsets. The exciting of the handset will allow the
operator to have control of the master control console. It is located in the control room of
Publika.
Page of15 96
Main
control
systemEmergency
phones

4.3.7 Pump Room
The pump room, also called as the sprinkler room provides immediate and fast means of
fire control to deliver sufficient water flow during a fire event. This pump room function with
3 elements with different role on their own, which is the duty pump, standby pump and
jockey pump.
A firefighting system consists of 2 main pumps, the main pumps provide sufficient supply
of Pressurised Water to the Fire Fighting System, which is initiated either manually or
automatically. A sudden drop in pressure cause the main pumps to supply water to the
firefighting system automatically. However, the main pumps can only be stopped manually.
This is known as packaged system. The pressure gauge function to control the pressure
so that the water pressure is accurate and appropriate. Water will be automatically cut out
at certain circumstances.
Page of16 96
Fire
Figh4ng
Pump
RoomWet
Riser
Pump
Duty Sprinkler
Pump
Stanby

Page of17 96
Detail
of
the
pump
system
Pressure
Meter
Wet
Riser
Pump
Jockey

4.3.8 Automatic sprinkler system
The sprinkler installation is designed to operate automatically in the event or a fire. When a
fire occurs, heat rising from the fire is absorbed by a silicone based liquid contained inside
the glass bulb of the nearest sprinkler head. This causes an air bubble inside the glass
build to expand.
When the temperature surrounding the
sprinkler risers above the rated temperature of the
sprinkler head the glass bulb breaks and ruptures the seal between the sprinkler head
orifice and the system pipe work. This allows water from the sprinkler system to discharge
through the sprinkler head in predetermined pattern. In the case of the solder strut type of
sprinkler, the glass bulb is replaced by a ‘strut’ made of metal with a low melting point.
When the strut melts in a fire, the sprinkler releases water extinguisher the fire.
Each sprinkler head is designed to operate individually, so in the even of a fire, only the
sprinkler heads nearest the fire will be activated. Without the introduction of an accelerated
fire, four sprinkler heads or less would normally active in a fire. When a sprinkler head is
activated, the flow of water through the sprinkle supple pipe work will be registered by the
flow switch on the local sprinkler floor control valve.
The activate flow switch will send a signal to the fire alarm panel, which will then send a
visual and audible signal to the fire affected area and to the fire brigade. As water flows
through the sprinkler system, due to the activation of a sprinkler head, the water pressure
in the system falls. Therefore the sprinkler jockey pump will start. If the system pressure
continues to fall, the duty sprinkler pump will start automatically and the jockey pump will
stop. Once started, both the duty and standby sprinkler pumps must be stopped manually
at the pump controller.
Page of18 96
UBBL-SECTION 225 (2)
• Sprinkler valves shall be located in a safe and
enclosed position on the exterior wall and shall
be readily accessible to the Fire Authority
• All sprinkler systems shall be electricity
connected to the nearest fire station to provide
immediate and automatic relay of the alarm
when activated.
Isometric
of
Sprinkler
system

Page of19 96
Schema4c
Diagram
for
Sprinkler
System

4.3.9 Carbon Dioxide Fire Suppression System (CO2)
Carbon dioxide in the ﬁre protection term,
gases that protects electrical equipment
from being burnt such as its sectors,
transformers and switch gears. The gasses
are transferred via pipes to the ceiling and
under ground distributors. Carbon dioxide is
lethal to a person’s health so occupants
must evacuate swiftly in a limited amount of
time. Heat and the sound of the alarm and
Co2 gas will be detected by the heat and
smoke detectors. The Co2 is then released
once it is detected by the heat triggers.
Page of20 96
Co2
Control
Panel
Details
Co2
Cylinder
Detail

Page of21 96
Co2
for
MCC
SWITCH
ROOM
Co2
for
DCP
SWITCH
ROOM
Co2
for
DCP
MSB
ROOM

4.3.10 External fire Hydrant
MFPA
(2008)
stated
that fire
hydrant
system
consist of a system of pipe work connected directly to the water supply to provide water to
each and every hydrant outlet for firefighting purpose. The other end of the pipeline is
joined to the pumps and water supply tank of firefighting room. The firefighting hydrant line
is a nearby loop pipe system to keep up the weight in the water hydrant. On the off chance
that hydrants are joined to the water mains buried street, the water supply are mostly
pressurized. The water is discharge into the fire engine form which it is then pumped and
squirted over time. It also stated that where the water supply is not reliable and
inadequate, hydrant pumps should be provided to pressure the fire mains. The hydrant are
used in case of emergency when there is need for more water. The fireman will connect
their equipment to the outlets of the hydrant, pushing water into the system. The valve will
be open to give an effective stream and high weight of water toward the flame. Taking into
account the examination, the sort of flame hydrant utilized as a part of Publika is the wet-
barrel sort.
There are two type of pressurized fire hydrant (Cavette,2015):
Wet-barrel hydrant
• Hydrant is connected directly to the pressurized water source.
• Upper barrel of the hydrant is always filled with water and each outlet has its own
valve with a stem that sticks out the side of the barrel.
Dry-barrel hydrant
• No valves on the outlets.
• Usually used in a winter country to prevent hydrant from freezing
Page of22 96
External
fire
Hydrant
in
Publika
UBBL-SEECTION 225.(2)
Every building shall be served by at least one fire hydrant located not more
than 91.5 meters from the nearest point of fire bridge access.

• Upper section remains dry until the main valve is opened by means of a long stem
that extends up through the top of the hydrant.
• Hydrant is separated from the pressurized water source by a main valve in the
lower section of the hydrant below ground.
4.3.11 Hose Reel system
Fire hose reels are located to provide a reasonably accessible and controlled supply of
water to combat a potential fire risk. The length of a fully extended fire hose is 36 meters
with a diameter of 19mm (outside diameter). The hose reel system generally serves as an
initial firefighting aid.
Page of23 96
Diagram
of
Hose
Reel
system
UBBL,
SecGon
224(c):
Hydraulic
Hose
Reels

Hose
reel
shall
be
located
at
every
45
meters
(depends
on
the
building
form).
Besides,
fire

hose
reel
should
be
located
at
the
strategic
places
in
buildings,
especially
nearer
to

firefighGng
access
lobbies
in
order
to
provide
a
reasonably
accessible
and
controlled

supply
of
water
for
fire
exGnguishing.

Hose
Reel

These appliances are designed to deliver, as a minimum, 0.33L of water per second. A
control nozzle attached to the end of the hose enables the operator to control the direction
and flow of water to the fire. All fire hose reels come with a unique ball valve shut-off
device, a plastic or solid brass hose reel nozzle and mounting bracket
When the hose reel is brought into use, the pressure in the pipe immediately downstream
and the pump check valves will drop below the field adjusting the pressure setting of the
pressure switch therefore triggering the pump to operate atomically to feed a steady
supply of water to discharge through the hose. The fire hose reel outlets should be
properly housed in glass fronted cabinet secured under lock and key(dyno,2012)
The hose reel in Publika located in small room with hose reel sticker on the door. it is the
same rrom as the fire extinguisher. This is for occupants to use it without exposing them to
danger from fire. There are 8 rooms in each floor which means 24 small room for hose reel
in total.
Page of24 96

4.3.12 Fire Extinguisher
A fire extinguisher is an active fire protection device used to
extinguish or control little flames in crisis circumstances. Normally, a fire extinguisher
comprises of a hand-held barrel shaped weight vessel containing an operators which can
be released to extinguish a flame. Portable fire extinguisher are for the most part include in
structures having sprinklers and hose reels. The staffs in the building are trained to use it
and these appliances should be frequently kept up by the suppliers.
Fire extinguisher are isolated into five classification based on different type of fire.
According to Fire Extinguisher Malaysia (2012), the most common type of the extinguisher
used in Malaysia are ABC Dry Powder Extinguisher and Carbon Dioxide (CO2)
Extinguisher.
According to Hall F. (1997), there are several ways to consider in selecting the right type of
fire extinguisher, but the most important are as follows:
Page of25 96
UBBL-‐SECTION
227

Portable
exGnguisher
shall
be
provided
in
accordance
with

the
relevant
codes
of
pracGce
and
shall
be
sired
in
prominent

posiGons
on
exit
routes
to
be
visible
from
all
direcGons
and

similar
exGnguisher
in
a
building
shall
be
of
the
same
method

of
operaGon.
Carbon
dioxide
fire
ex4nguisher

• It must contain the type of extinguishing agent suitable for the fire it may be require
to extinguish.
• It must not be dangerous to the user
• It must be simple to use
• It must be efficient and reliable
There are only a type of fire extinguisher which is carbon dioxide extinguisher. It is more
suitable class B, C & E fire which involve flammable liquids and electrical hazards. CO2 is
mild to electrical equipment and is ideal for modern office. Chadderton (2000) stated that
CO2 Vapour displaces air around the fire and burning ceases. Besides that, he also
mentioned that there is minimal cooling effect and there will be chances for the fire to
restart it high temperature have become established. It is not sale for wood, paper and
cloths.
Page of26 96
Type
of
fire

4.4 Passive fire protection system
Passive fire protection systems are those that allow a fire to act upon the system itself, to
compartmentalize and contain the fire to save lives and to protect the structure. It is to
prevent the passages of hot gasses and flame from passing between fire isolated
compartments. Mechanical or electrical activation are not required in this system and the
system require no maintenance once they are installed. Passive fire protection begins at
the designing and concept stages of any constructions. It is built into the building that will
ensure the protection of occupants even in event of the failure of the active protection
According to Nulifire (2014), the overall aim of passive systems is to contain the fire by:
• Use of fire rated partitions and doors to prevent the fire and smoke form moving
from one compartment to another
• Delaying the collapse of the building structure
• Delaying the growth on the fire
Page of27 96

4.4.1 Fire Rated Door
FIGURE Fire rated door
One of the passive fire protection system we found at the site is fire rated door. Fire rated
door, which is also call as fire door is an important fireproof component that designers
often have to take concerns while creating the passive fire protection system. Fire door
serves as a critical compartment of building entrance or exit in order to prevent the
spreading of fire and smoke. 1.5 hours fire-rated door were installed at the egress of fire
staircase each floor. The fire doors are well located to allow easy circulations and the
escape routes are protected by all these fire doors during the event of fire.
The automatic door closer hinge and devices were installed
to fulfil the requirements of By-law Section 164 (1). This
device helps to ensure that the fire door is closed at all time
to ensure safety.
FIGURE Automatic door closer hinge
4.4.2 Separation of Fire Risk Area
Page of28 96
UBBL - SECTION 162.(1)
• Fire doors of the appropriate FRP shall be
provided
• Openings in compartment walls and separating
walls shall be protected by a fire door having a
FRP in accordance with the requirements for
that wall specified in the Ninth Schedule to
these By-laws
UBBL-SECTION 164.(1)
• All fire doors shall be fitted with automatic door
closers to the hydraulically spring operated
type in the case of the swing doors of wire
rope and weight type in the case of sliding
door

According to the law and regulations stated above in By-laws, designers must consider
about the separations of fire risk area, which should be involved in the spatial planning of
the building to slow down the spreading of fire as much as possible.
Page of29 96
UBBL - SECTION 139
The following area uses shall be separated from the other areas of occupancy in which
they are located by fire resisting construction of elements of structure of a FRP to be
determined by local authority based on the degree of hazard :
• Laundries
• Storage area of materials in quantities deemed hazardous
• Liquefied petroleum gas storage areas
• Linen rooms
• Boiler rooms and associated duels storage area
• Repairs shops involving hazardous processes and materials
• Transformer rooms and substations
• Flammable liquid stores

4.4.3 Emergency Exit Signage
Emergency exit
signage
There are neon green Exit signs above the fire escape doors, the signage indicates the
way to safety outdoor area during a fire event. Moreover, the emergency lights are also
installed within it to give some light if the main electrical supply has been cut off, therefore
it is lit 24/7 for emergencies. This device is very effective as it helps to reduce confusion by
providing a clear direction of the escape route. In Malaysia, the exit signage is written in
Bahasa Melayu, which is “KELUAR” in block letters to be visible enough. This sign is
located on top of the fire escape doors, a specific position with no surrounding
disturbance.
Page of30 96
SECTION 172.
• Storey exits and access to such exits shall be marked by readily visible signs and shall
not be obscured by any decorations, furnishing or other equipment
• A sign reading “KELUAR” with an arrow indicating the direction shall be placed in every
location where the direction of travel to reach the nearest exit is not immediately
apparent
• Every exit sign shall have the word “KELUAR” in plainly legible letters not less then
150mm high with the principal strokes of the letters not less than 18mm wide. The
lettering shall be in red against a black background.
• All exist signs shall be illuminated continuously during periods of occupancy

4.4.5 Fire Emergency Staircase
Fire emergency staircase allow the occupants in the building to escape to a safer area or
assembly point when there is fire event happening. Following the law, buildings should not
have separate exit path in different direction to deny confusion to occupants while
escaping.
a) Stair Type
Page of31 96
UBBL SECTION 168.
• The required width of a staircase shall be maintained throughout its length including at
landings.
• Except as provided for in by law 194 every upper floor shall have means of access via
at least two separate staircases.
• The required width of staircase shall be clear width between walls but handrails may be
permitted to encroach on this width to a maximum of 7.5 millimetres.
• Tiles on staircase-risers maximum 180mm and thread minimum 255mm.
UBBL SECTION 169.
• No exit ruote may reduce in width along its path of travel from the storey exit to the final
exit.
UBBL SECTION 178.
• In buildings classified as institutional or places of assembly, exits to a streets or large
open space, together with staircases, corridors and passages leading to such exits
shall be located, separated or protected as to avoid any undue danger to the occupants
of the place during a fire event.

The fire resistant escape stairs found on site were made of reinforced concrete stairs
enclosed with concrete walls that are only assessable through self closing fire doors. This
type of staircase allows a huge amount of human capacity within the stair case lobby,
which provides a smooth flow of a large number of occupants during a fire event.
b) Material used
The type of building material used to construct the fire resistant escape stairs is re-
enforced concrete. There are many important characteristics using it to construct the fire
resistant escape stairs such as :
1) Strength: concrete gains strength over time, therefore it provides strength and stability
to the stairs in the building to overcome any unexpected fire or natural disasters. It is
able to withstand massive weight, which can sustain a lot of occupants’ weight while
evacuating the building in a rush
2) Fire resistant : concrete is resistant to fire and heat and prevents the spreading of fire
throughout the building while withstanding the massive heat from the fire at the mean time
3) Thermal mass : concrete slows down the heat from moving through the building
reducing thermal heat gain and changing of temperature within the small area of fire
escape lobby. This can prevent the overheating of an enclosed area, which may cause
breathing difficulties for occupants.
Fire
emergency staircase escape plan
Page of32 96

4.5 Conclusion for Fire Protection
In conclusion, neither active nor passive fire protection system plays an
important role to protect a building when a fire breakdown. The firefighting
system in Publlika complies with the UBBL by-Laws and is very systematic as
the entire system is controlled by a control panel. Having a single main
controller can prevent the cause of false alarm in the building that will disturb
the occupants. Public also updates their appliances following the
requirements of Bomba and every core of the building is filled with the fire
appliances for the safety of the occupants. At last, the overall firefighting
system in the building has a proper and good appliances used for various
function of the spaces in the building to ensure the safety of occupants.
Page of33 96

5.0 Mechanical Transportation System
5.1 Introduction
This research includes the studies the types of mechanical transportation system used in
Shopping Complex.
Mechanical Transportation System can be referring as a movable machines/system that
can hoist or haul passengers and objects from one point to another either in vertical or
horizontal motion. Buildings which exceeded more than one floor will have stairs that
connect ground floor to upper floor. Introduce mechanical transportation system can
reducing the time and physical energy of one occupant when travelling in the building. In
addition, the transportation systems also make ease of the senior citizen or disable people
to move around the building. Following are the permanent mechanical transportation
system usually used in buildings:
1. Elevator
Elevator, which also known as lift, is a vertical transport that efficiently carry people and
objects between floors. Elevators run either vertical or inclined to the vertical by less than
15 degree. Every elevator is different from another so the feature and operation will be
varies. According to the UBBL clause 124, a lift shall be provided to non-residential
building which exceeds 4 storey above or below main entrance. The number of units of
elevator will be determining by the population, function of the building and the height of the
building.
i) Type of elevator
a. Gear and Gearless Traction Elevators with Machine Room
i. Gear traction elevators have a gearbox attach to the motor, which
drives the wheels that move the ropes. Geared traction elevators are
middle of the road in terms of initial cost, ongoing maintenance costs,
and energy consumption.
ii. Gearless traction elevators have the wheel attached directly to the
motor. It have a high initial cost, medium ongoing maintenance costs,
and use energy a bit more efficiently than geared traction elevators.
b. Hydraulic Elevator
i. Supported by a piston at the bottom of the elevator that pushes the
elevator up as the electric motor forces oil or another hydraulic fluid
into the piston.
ii. Have a low initial cost and its ongoing maintenance costs are lower
compared to the other elevator types.
iii. Use more energy than other types of elevators because the electric
motor works against gravity as it forces hydraulic fluid into the piston.
iv. A major drawback of hydraulic elevators is that the hydraulic fluid can
sometimes leak, which can cause a serious environmental hazard.
c. Machine-Room-Less (MRL) Elevator
Page of34 96

i. Traction elevators that do not have a dedicated machine room above
the elevator shaft.
ii. The machine sits in the override space and is accessed from the top
of the elevator cab when maintenance or repairs required.
iii. They are energy efficient, require less space, and their operation and
reliability are on par with gear-less traction elevators.
2. Escalator
An escalator is a moving staircase which acts as a transport device provides people to
move between floors of a building. It can continuously convey to move large number of
people efficiently therefore reversible to suit the main flow of traffic during peak hours. It is
powered by constant-speed alternating current motors and move at approximately
0.30-0.61m per second.
a. Standard Elevator Types:
i. Parallel Escalator
ii. Crisscross Escalator
Page of35 96
Figure 5.1.3: Machine-Room-
Less Elevator
Figure 5.1.2: Hydraulic
Elevator
Figure 5.1.1: Gear/Gearless
Traction Elevator

b. Travelators/ Moving Walkway
Travelator is a slow moving conveyor mechanism that transports people across a
horizontal or inclined plane over a distance. Travelator can be used by standing or walking
on them and are usually install in pair.
a. Inclined Travelator
Page of36 96
Figure 5.1.5: Escalator in one direction
of travel (Continuous)
Figure 5.1.4: Escalator in one direction
Figure 5.1.7: Flat Step
Configuration
Figure 5.1.8: Flat Step
Configuration (Used typically
for rises create than 7620mm)
Figure 5.1.6: Escalators for
both directions of travel
Figure 5.1.9: Criss-cross
Arrangement

b. Horizontal Travelator
Page of37 96
Figure 5.1.10: Inclined moving
walkways in parallel
Figure 5.1.11: Criss-cross
arrangement
Figure 5.1.12: Horizontal
Moving Walkway
Figure 5.1.13: Ramped
horizontal moving walkways

5.3 Case Study
A) Elevator
- The MRL Elevator Solaris Dutamas/Publika used is KONE K3000 Monospace
- The Gearless Traction Lift is under Mitsubishi and only locates in Block B1 and C1.
 
Page of38 96
Figure 5.2: Solaris Dutamas
Map
Figure 5.2.1: Block B1 and
Block C1 map

Schematic for gearless traction elevator:
Page of39 96
Figure 5.2.2: Gearless
Traction Elevator

Schematic for MRL Elevator
 
Page of40 96
Figure 5.2.3: MRL Elevator

Elevator Component Details:
The elevator car function as carrying passengers and loads from ﬂoors to ﬂoors and the
car sling function as carrying the elevator car. Car sling is a metal framework connected to
the means of suspension.  
Page of42 96

Car Sling
Car sling is the load carrier element in the elevator car as its function of isolating vibrations
due to the movement of the lift. Car sling main components:
a) Upper Transom
- The upper transom is the suspension element. It is designed also to mount sliding
or roller guide shoes. Braking system catch clamps are mounted in upper transom
also.
b) Lower Transom
Page of43 96
Figure 5.2.6: Car Sling Component
Figure 5.2.7: Upper Transom

- Lower transom is the carrier of car ﬂooring through an exactly arranged pressure
springs mounted in the lower isolation subassembly. Safety gear catch clamps are
also mounted in the lower transom.
Page of44 96
Figure 5.2.8: Lower Transom

Elevator Car
The standard elevator car can be classiﬁed according to the number of entrances and their
location as follow:
a. Normal Cabin
b. Open through Cabin
c. Diagonal Cabin
Page of45 96
Figure 5.2.9: Elevator Car Component
Details

In order to prevent overloading, the space of the elevator is design to limited and related to
the rated load of the elevator. The number of the passenger should be obtained from the
formula:
Number of passengers = rated load ÷ 75 (the average weight of one person)
a) Car Floor:
- Shall have sufficient mechanical strength to sustain forces which will be applied
during normal operation, safety gear operation and impact of the car to its buffers.
- Floor size is the same size of the car and floor extension defines door opening,
location and side portal depth.
Page of46 96
Figure 5.2.10: Elevator Car Size according to requirements by the
number of people and designs.
Figure 5.2.11: Arrangement of Elevator Car
Figure 5.2.12: Measurement Table

- Can be covered by PVC or marble stone or granite and can be customized
according to client requirements.
b) Car Ceiling:
- Designed to be able to support two persons during maintenance operation without
permanent deformation
- Prepared also to mount emergency trap door, blower fan and balustrade.
c) Front Panel:
- Folded steel panels are used to enclose elevator car with different types, sizes and
ﬁnishing.  
Page of47 96
Figure 5.2.13: Upper View on the Elevator Car
Figure 5.2.14: Front Panel

d) Car Operating Panel
Car operating panel (COP) is a panel fixed in the car containing the car operating controls,
such as door open and close, emergency button, call register button and floors button.
e) False Ceiling
False ceiling is the main source of lighting in the elevator car. Fluorescent lighting and spot
lights are the most common lighting elements that fixed in it.
f) Exhaust fan
▪ Ventilates the air inside the elevator shaft.
Page of48 96
Figure 5.2.15: Operating Panel Details
Figure 5.2.16: Exhaust fan in the shaft

g) Guide rails
- Fixed to the hoist way by means of steel brackets
- Steel tracks that run the length of the hoist way and direct the course of travel of an
elevator car and elevator counterweights.
- Usually mounted to the sides of the hoist way.
h) Suspension (Hoisting) Ropes (Cables)
- Means for car and counterweight, which are represented by steel wire ropes
- They are used on traction type elevators usually attached to the crosshead.
i) Controller
o The main computer to control the function of the elevator
whether to stop at speciﬁc ﬂoors for maintenance or
emergency events occur.
Page of49 96
Figure 5.2.17: Guide rails and Suspension Ropes
Figure 5.2.18: Controller

Machine Drive System
a) Gearless machine
- It used in high rise applications whereby the drive motor and drive sheave are
connected in line on a common shaft, without any mechanical speed reduction unit
located between the drive motor and drive sheave.
- Sizes and shapes vary with load, speed and manufacture but the principles and
components are the same.
-
Page of50 96
Figure 5.2.19: Gearless Traction Details
Figure 5.2.20: EcoDisc Gearless Traction

B) Escalator
a. Otis Escalator
b. Fujitec Travelator
 
Page of51 96
Figure 5.3: Escalator Location
Figure 5.3.3: Travelator
Figure 5.3.2: EscalatorFigure 5.3.1: Escalator

The escalator consists of:
1. Landing platforms
2. Truss
3. Tracks
4. Steps
5. Handrail
6. Drive system
7. Auto lubricant System
8. Braking System
9. Safety Devices
10. Electrical & Control Systems 
Page of52 96Figure 5.3.5: Escalator Details
Figure 5.3.4: Escalator Details

Landing Platform
- These two platforms house the curved sections of the tracks, as well as the gears
and motors that drive the stairs. The top platform contains the motor assembly and
the main drive gear, while the bottom holds the step return idler sprockets.
- This plate is flush with the finished floor and is either hinged or removable to allow
easy access to the machinery below.
- The comb plate is the piece between the stationary floor plate and the moving step
where the teeth mesh with matching cleats on the edges of the steps.
- The design is necessary to minimize the gap between the stair and the landing,
which helps prevent objects from getting caught in the gap.
-
Truss
- The escalator truss is the structural frame of the escalator and consists of three
major areas:
o The lower section
o Incline section
o Upper section
- Is a hollow metal structure that bridges the lower and upper landings
- Joined together with cross braces across the bottom and just below the top.
Page of53 96
Figure 5.3.6: Landing Platform
Figure 5.3.7: Truss Details

Track System
- The track system is built into the truss to guide the step chain, which continuously
pulls the steps from the bottom platform and back to the top in and endless loop.
- There are actually two tracks
o One for the front wheels of the steps (called the step wheel track)
o One for the back wheels of the steps (called the trailer-wheel track)
- At the top and bottom of the escalator, the two tracks converge so that the front and
back wheels of the steps are almost in a straight line cause the stairs to lay in a ﬂat
sheet-like arrangement.
Steps
- Made up of Solid, die-cast aluminum or steel.
- Steps are linked by a continuous metal chain that forms a closed loop.
- Front and back edges of the steps are connected to wheels which set further apart
to ﬁt into the track.
Handrails
Page of54 96
Figure 5.3.8: Track System
Figure 5.3.10: Step Details

- The handrails provides a convenient handhold for passengers who using the
escalator.
- Pulled along its track by a chain that is connected to the main drive gear by a series
of pulleys.
Balustrade
- Consists of the exterior supporting structure of the escalator and the handrail as
well.
- Exterior component that supports the handrails.
 
Page of55 96
Figure 5.3.12: Balustrade Details
Figure 5.3.11: Balustrade and Handrails

Drive System
An escalator drive system includes the following components:
- Drive machine and gear reducer
- The step drive system
- The handrail drive system
The drive machine used to drive the pinion gear or the main drive chain may directly or
indirectly drive the handrail drive system.
Drive Machine
The drive machine and the gear reducer provide
the torque to drive the step band at a constant
speed.
▪ The drive machine motor is typically a three-
phase AC direct-on-line ﬂange mounted unit.
▪ Is either directly or ﬂexibly coupled to the
reduction gear.
▪ The motor is protected by thermal and elector-
magnetic overload devices as well as thermistors
in the motor winding.
The Step Drive System
- Step motion is achieved by a direct step assembly connection to the step chains
- Two-step chains; one for each side are directly coupled to the main drive axle, the
bull gear shaft, through the step chain sprockets.
- Main drive axle is driven by the motor and reducer assembly.
- On both ends of the main drive axle transfer power to the step drive system.
Page of56 96
Figure 5.3.13: Drive Machine
Figure 5.3.14: Step Drive System

Handrail Drive System
The handrail drive moves th handrail along the handrail tracking system through traction
on the V-shaped handrail underside. The handrail drives consists of the following:
1. The handrail drive and idler sheaves
2. Handrail drive sprockets
3. Handrail drive chains
4. Handrail take-up devices
5. The handrail support rollers.
Safety Devices
- An emergency stop button is provided at both the upper and lower balustrade of the
escalator.
- This button allows anyone to stop the escalator immediately in the event of an
emergency.
- Can be restarted after releasing the button by using the normal start-up procedure.
Page of57 96
Figure 5.3.15: Handrail Drive System
Figure 5.3.16: Emergency Button

5.4 UBBL Requirements
According to UBBL 1984
a. Section 124
For all non-residential buildings more than 4-storeys above or below the main
access level at least one lift shall be provided
b. Section 151-155
1. The fire mode of operation shall be initiated by a signal from the fire alarm panel
which may be activated automatically by one of the alarm devices in the building
or manually.
2. If main power is available all lifts shall return in sequence directly to the
designated floor, commencing with the fire lifts, without answering any car or
landing calls, overriding the emergency stop button inside the car, but not any
other emergency or safety devices and park with door open.
3. 3. The fire lifts shall be available for use by the fire brigade on operation of the
fireman’s switch.
4. Under this mode of operation, the fire lifts shall only operate in response to car
calls but not to landing calls in a mode of operation in accordance with by law
154
5. In the event of mains power failure, all lifts shall return in sequence directly to
the designated floor and operate under emergency power as described under
paragraph 2-4.
6. All lift lobbies shall be provided with smoke detectors.
c. Section 243
1. In a building where the top occupied floor is over 18.5 meters above the fire
appliance access level fire lifts shall be provide.
2. The fire lifts shall be located within a separate protected shaft if it opens into a
separate lobby.
3. Fire lifts shall be provided at the rate of one lift in every group of the fifts which
discharge into same protected enclosure or smoke lobby containing the rising
main, provided that the fire lifts are not located more than 61 meters travek
distance fri the furthermost point of the floor.
Page of58 96

5.5 Conclusion
The elevators in Solaris Dutamas / Publika have met all the requirements stated in the
UBBL. All the elevators are strategically located next to the exits at the ground floor so that
passengers can leave the building and the lift conveniently during fire emergencies. This is
to ensure the elevators achieve the requirements of UBBL Section 154. Besides, they also
achieved eco-friendly by using Ecodisc system from KONE to reduce the pollution to the
surrounding.
There will be a fire lift locates next to each passenger lift. Therefore, all the fire lifts fulfilled
the requirement of having smoke detectors at the life lobbies. The fire lifts, which are set in
every group of elevators, fulfilled the requirement of UBBL Section 243.
In conclusion, there are still potential dangers to passengers when using the mechanical
transportation although it achieves the UBBL. Passengers have to be careful when using
the mechanical transportation to prevent getting hurt by events such as equipment
malfunctions and accident cause by unintended consequences.
Page of59 96

6.0 Air Conditioning and Mechanical System
6.1 Introduction
AC, also referred as Air Conditioning serves the main purpose of achieving thermal
comfort and maintaining the indoor air quality within a building. In short, it is described as
the technology of indoor and vehicular environmental comfort. It achieves its goal by
replacing the indoor air with fresh air as well as changing the air properties within the
building by controlling the temperature, humidity to a more suitable and comfortable
environment.
6.2.1 Air Conditioning System
Air Conditioning is the process of altering the properties of air primarily the
temperature and humidity through mechanical means. It can also be referred as the total
control of temperature, air humidity and air cleanliness.
Every building that uses air conditioner has its own air conditioning system that can
converts the humidity and temperature in a building as well air ducts that controls the ﬂow
of the air within the building. An air conditioner works similarly to a refrigerator, using a
remarkable physics law known as phase conversion which explain when a liquid is
converted in gas, it absorbs heat. With this, the air conditioner goes through a cycle known
as the refrigerant cycle.
Different air conditioning system have different advantages over others and are
chosen depending on requirements of the building such as size, design, environmental
friendly etc. A typical system of an air conditioner usually consists compressor, condenser
and evaporator but that’s not always the case depending on the system used.
Refrigerant Cycle Type of HVAC system
Page of60 96

6.3 Case Study
6.3.1 Air Conditioner System
6.3.1.1 Introduction
This research paper covers the air conditioning system adopted by the chosen
building, Publika which is an upscale neighbourhood shopping mall located in Solaris
Dutamas, Sri Hartamas. Being a rather large mall, the air conditioning systems used in
Publika are distributed using central air conditioning system with AHU. The central air
conditioning system comes from the fact that the system conditions the entire air
conditioner system from one large area. This system circulate cool air through a system of
supply and return ducts.
This system is efﬁcient and more effective in larger space that need high cooling
loads within the shopping mall. Cool air is distributed around using a series of duct system
which is also connect to the Fan Coil Units (FCU) and Air Handling Unit (AHU) that is
located in the mall hidden from the public.
6.3.1.2 District Cooling System
The cooling systems here not only supply to Publika but to the whole Solaris
Dutamis. Unlike typical shopping mall system, Solaris Dutamas uses a district cooling
system as the system is able to meet the cooling demands of dozen of buildings. District
Cooling System consist of a central plant chills water that distribute chilled water to the Air
Handling Units (AHU). The warmer water is returned to the central plant to bre re-chilled.
Page of61 96

Solaris Dutamas is consider a smaller district to be using District Cooling System,
but nonetheless, it is still the most suitable system for it. Since it is smaller in size, the
central plant is located in one of the basement of a building.
6.3.1.3 Water-Cooled Chilled Water System
Publika uses a system known as the water-cooled chilled water system. This air
conditioning system uses water to the chiller and then to air handling units to cool the air.
The chilled water system isn’t like a typical residential system, it doesn’t use any
compressor since it doesn’t use any gas refrigerant. The reasons Publika chose this are:
1. Environmental Friendly. Since it uses water instead of gas refrigerant that release
gas such as Chlorofluorocarbon as waste product.
2. The systems fit better with the design of Publika.
3. It is also proven to be safer and no hazard of piping refrigerant all around the
building. Since it uses water as a refrigerant which is non- corrosive, have specific
heat value, fluid and non-toxic.
4. Maintenance is easier. The maintenance for this system is easier compared to other
system since it usually only have to replace the filters and also leaking in this
system is only leaking of water instead of dangerous or toxic gas.
5. Energy Saving. The Chiller doesn’t activate until the temperature in the water
reservoir reaches a certain temperature which helps provide significant energy
saving.
How Water-Cooled Chilled Water System Works
The main components that make up the Water-Cooled Chilled Water System are
the Cooling Tower, Chiller, Ice Tank and FCU/AHU. The Chiller will be that main
component where the heat exchange occurs. The water will leave the chiller at 7°C and
circulate through the building to Air Handling Units and Fan Coil Units. The water cooled
the space and will return at about 13°C to a reservoir/ice tank. When the water in the
reservoir reaches a certain temperature, the water will be send to the chiller again and the
process will be repeated. The unwanted heat receive from the chiller during heat exchange
is disposed to the cooling tower through pipes. Publika have 4 cooling towers which is
located at one of the roof top of the building as cooling towers are required to be placed in
area with good ventilation and away from public. The cooling tower would remove the heat
from the water and expelled it to the outside with evaporation. The water entering the
cooling tower are about 35°C and will drop to 29°C when leaving the cooling tower. The
enter will then re-enter the chiller to collect waste heat energy again. This process will also
repeated.
Page of62 96

Diagrams Showing How The System Works
6.3.1.4 Components of Air Conditioning System
a. Chiller
A chiller is a machine that cools the water in the chilled water system. It cools the water by
removing the heat from the water and transfer it to another water cycle that functions to
expel the heat to the outside. So basically, the chiller is involved in two process, one that
cools the water and send it to the and send it to the FCU/AHU (Process 2) and another
Page of63 96

that collects the heat from process 2 using the condenser in the chiller and delivers it to
the cooling tower to be expelled to the atmosphere(Process 1).
Water-Cooled Chiller vs Air-Cooled Chiller
Air-Cooled chiller rejects the heat through the fans to the atmosphere while a Water-
Cooled Chiller rejects the heat rejects the heat through a cooling tower to the atmosphere.
b. Cooling Tower
Publika Cooling Tower (model: Evapco At228-0824) Cooling Function Diagram
A cooling tower is used to dispose unwanted heat from a chiller. Warm water from the heat
source is pumped to the water distribution system at the top of the tower. The water is
distributed over the wet deck fill by means of large orifice nozzles. Simultaneously, air is
drawn in through the air inlet louvers at the base of the tower and travels upward through
the wet deck fill opposite the water flow. A small portion of the water is evaporated which
removes the heat from the remaining water. The warm moist air is drawn to the top of the
cooling tower by the fan and discharged to the atmosphere. The cooled water drains to the
basin at the bottom of the tower and is returned to the heat source.
Page of64 96

c. Reservoir / Ice Tank
Page of65 96

The reservoir is where cold water is stored before deliver to AHU/FCU. In Cooled Water
Chilled Water System, the chillers are not connected directly to the AHU/FCU, It is
connected to a reservoir/Ice tank and only activates when the water in the reservoir rises
to a certain degree. The water from the reservoir would be send to the chiller and be
cooled down to approximately 7°C and send back to the water reservoir. The water in the
reservoir will then be delivered to AHU/FCU to deliver cool air to the building. The water
would cooled the space and return to the reservoir at about 13°C.
Air Handling Unit (AHU)
Air handling units (AHUs) also known as Air handlers are used to supply and circulate air
around a building, or to extract stale air as part of a building’s heating, ventilating and air
conditioning (HVAC) system. Total of 10 AHUs located in Publika Solaris Dutamas building.
It is used for big area in public like Publika Mall.
Figure Location os AHU Rooms in Publika
Essentially, an Air Handling Unit system comprises a large insulated metal box that
contains a fan, heating and/or cooling elements, filters, sound attenuators and dampers. In
most cases, the AHU is connected to air distribution ductwork; alternatively, the AHU can
be open to the space it serves.
Supply air passing through the AHU is filtered and is either heated or cooled, depending
on specified duty and the ambient weather conditions. In some buildings, Air Handling
Units are used only to supply fresh air for ventilation and extract stale air.
For heating or cooling, AHUs may be connected to central plant such as boilers or chillers,
receiving hot or chilled water for heat exchange with the incoming air. Alternatively, heating
or cooling may be provided by electric heating elements or direct expansion refrigeration
units built into the air handler.
Figure Air Handling Room in Publika
Page of66 96

Page of67 96
Return
Duct
Chilled
Water
In/Out
Supply
Duct
Control
Panel
Air
Handling
Unit

When AHU systems are used to extract stale air from the building, a controlled proportion
of this air may be recirculated to avoid having to condition all supplied air. AHUs can also
incorporate heat recovery mechanisms to extract heat from the air being expelled and use
it to heat incoming supply air.
Air Handling Units vary considerably in size, capacity and complexity, depending on the
job they are designed to perform.
6.4 Air Handling Unit Components
6.4.1 Air Filter
Air ﬁltration is almost always present in order to provide clean dust-free air to the building
occupants. Filtration is typically placed ﬁrst in the AHU in order to keep all the downstream
components clean.
Figure Air Filter of AHU in Publika
6.4.2 Cooling Coils
Air handlers may need to provide heating, cooling, or both to change the supply air
temperature, and humidity level depending on the location and the application. Such
conditioning is provided by heat exchanger coil(s) within the air handling unit air stream,
such coils may be direct or indirect in relation to the medium providing the heating or
cooling effect.
Figure Example of Cooling Coils
Page of68 96

6.4.3 Humidifier
Humidification is often necessary in colder climates where continuous heating will make
the air drier, resulting in uncomfortable air quality and increased static
electricity. Evaporative type is used on Publika to dry air blown over a reservoir will
evaporate some of the water. The rate of evaporation can be increased by spraying the
water onto baffles in the air stream.
Figure Humidifier of AHU
Figure Diagram of Humidifier Process
Page of69 96

6.4.4 Maxing Chamber
In order to maintain indoor air quality, air handlers commonly have provisions to allow the
introduction of outside air into, and the exhausting of air from the building. In temperate
climates, mixing the right amount of cooler outside air with warmer return air can be used
to approach the desired supply air temperature. A mixing chamber is therefore used which
has dampers controlling the ratio between the return, outside, and exhaust air.
Figure Maxing Chamber in Publika Figure Process of Maxing
Chamber
6.4.5 Blower
Air handlers typically employ a large squirrel cage blower driven by an AC
induction electric motor to move the air. Blowers present in large commercial air handling
units, which placed at the end of the AHU and the beginning of the supply ductwork
therefore also called supply fans.
Page of70 96

6.4.6 Heat Recovery Device
A heat recovery device heat exchanger of many types, may be ﬁtted to the air handler
between supply and extract airstreams for energy savings and increasing capacity.
Figure Example of Mechanical Blower
6.4.7 Vibration Isolators
The blowers in an air handler can create substantial vibration and the large area of the
duct system would transmit this noise and vibration to the occupants of the building. To
avoid this, vibration isolators (ﬂexible sections) are normally inserted into the duct
immediately before and after the air handler and often also between the fan compartment
and the rest of the AHU. The rubberized canvas-like material of these sections allows the
air handler components to vibrate without transmitting this motion to the attached ducts.
Page of71 96

6.5 Fan Coil Unit (FCU)
FCU is a simple device consisting of a heating or cooling coil and fan. It is part of
an HVAC system found in residential, commercial, and industrial buildings. Typically a fan
coil unit is not connected to ductwork, and is used to control the temperature in the space
where it is installed, or serve multiple spaces. It is controlled either by a manual on/off
switch or by thermostat.
Figure Fan Coil Unit in Publika
Publika is using Trane as their main cassette-type minisplit air conditioners. Designed for
recessed ceiling installation and provide years of comfortable, convenient cooling, with
minimal service required.
Features
• Fit all needs
• Available in 50 Hz cooling
4-Way Direction Air Flow
This multiflow system feature four different settings of the discharge outlets, offering many
benefits:
- Provides wide vertical air distribution for better comfortable while cooling the entire room
in a short period of time.
- Enhances down-flow performance and enables wide-range air-conditioning for medium
discharge.
- Enables adjustment of the airflow direction to reduce air resistance.
- Quite operation: high efficiency with low noise levels.
Page of72 96

Figure Orthographic of Trane Cassette-type Air
Conditioners
Trane Air Conditioners are designed and constructed to provide long life and trouble free
system and the automatic temperature adjustment for more comfortable sleeping
conditions and energy savings.
Page of73 96

6.5.1 Jet Diffusers
Publika is using ASU CK jet diffusers because of it’s made out of a fixed outer frame and
adjustable concentric rings, which specially designed for high volume and long throw
applications. The concentric rings can be adjusted 45 degree upward and downward or
leftward and rightward depending on the installation position to control the direction of
airflow. CK jet diffusers are suitable to be installed on exposed ductwork or surface
mounted in stadium, factory, theatre and etc.
Features
• Economical
• Long throw capability
• High air flow capability
• Suitable for exposed ductwork or surface mounted
• Suitable for ceiling or wall installation
• Air flow direction is adjustable up to 45 degree upward and downward or leftward
and rightward
Page of74 96

Figure Jet Diffuser in Publika
Page of75 96

6.5.3 Return Air Grilles
A return air grille is a connection to ductwork that allows air to return to a heating and
cooling system. Publika is using C Curve Blade Return Air Grille as their main return air
grille. Return air openings are typically covered with grillwork that serves a number of
different functions. A variety of companies make coverings for these openings that people
can use to replace existing covers or can install with a brand new system. These products
are available through catalogs, hardware stores, and contractors, as well as manufacturers
of ducting systems.
Figure C Curve Blade Return Air Grille in Publika
Features
• The shape of the curved blade is approximately one eighth of the circumference of
a circle.
• Suitable to install on wall for return air application.
• The grille will come in more sections for blade length that is more than 600mm.
• Approximately 48% free area.
Figure RC Construction Illustrations of Return Air Grille
Page of76 96

7.1 Introduction (Mechanical Ventilation System)
Ventilation (the V in HVAC) is the process of intentional introduction of outside air into a
space or replacing air in any space to provide high indoor air quality. To achieve the
desired indoor psychrometric condition, ventilation is used to dilute and displace indoor
pollutant, creating thermal comfort and dehumidification in the building as it involves
temperature control, oxygen replenishment, and removal of moisture, odours, smoke,
heat, dust, airborne bacteria, and carbon dioxide. This process also removes unpleasant
smells and excessive moisture by introducing outside air to keep the interior building air
circulating, preventing stagnation of the interior air. The methods of ventilation in a building
is divided into two types which is the mechanical ventilation and natural ventilation.
Figure 7.1.1 Diagram showing difference between natural and mechanical ventilation in a house.
1. Natural Ventilation
The natural ventilation is the ventilation of a building with outside air without using fans or
other mechanical systems. There are three types of natural ventilation occurring in
buildings, such as wind driven ventilation, pressure-driven flows and stack effect.
Natural ventilation can be achieved by using windows, louvers, or trickle vents when
spaces are small and the architecture permits. In more complex schemes, warm air is
allowed to rise and flow out high building openings to the outside, causing cool outside air
to be drawn into low building openings, this process is called the stack effect. The wind
driven ventilation relies upon force of the prevailing wind to pull and push air through the
enclosed space as well as through breaches in the building’s envelope.
The benefit of using natural ventilation over mechanical ventilation is it consumes lesser
energy as it mainly comes at the stage where building were designed to have openings
that provides natural ventilation whereas mechanical requires external components to
generate air into the space.
Page of77 96

Figure 7.1.2 Diagram showing natural ventilation strategies.
The amount of air exchanging in a space (CFM) must be determined by using the
information pertaining to the suggested air changes for proper ventilation from the local
building codes. The ranges speciﬁed will adequately ventilate the corresponding areas in
most cases however some extreme conditions may require “minutes per change” outside
of the speciﬁed range. A space or room with the appropriate suggested air changes value
will be a space with proper ventilation which gives comfort for the users inside the space.
Figure 7.1.3 Suggested air changes for proper ventilation chart for different spaces.
Page of78 96

Mechanical ventilation is used for applications where natural ventilation is not appropriate
such as in warm or humid climates where maintaining thermal comfort solely via natural
ventilation may not be possible. Mechanical ventilation is the process of changing air in an
enclosed space, where indoor air is withdrawn and replaced by fresh air continuously that
is supplied by clean external sources by the uses of mechanical devices such as fans,
filters and etc. Mechanical ventilation system are often found in domestic bathrooms and
kitchens where the aim is to remove smoke, odours, stale air such as water vapour and
etc. by using extractor fans.
The benefits and importance of maintaining a proper mechanical ventilation includes
• Preservation of oxygen content while removing carbon dioxide content at the
same time.
• Prevention of heat concentrations from machinery, lightning and people.
• Reduces excess condensation.
• Dispersal of concentrations of bacteria.
• Dilution and disposal of contaminants such as smoke, dust gases and body
odours.
• Consistent freshness is provided.
There are two types of mechanical ventilation system, which is spot ventilation, and
energy-recovery ventilation system. The spot ventilation system includes supply system,
extract system or a combined system.
(a) Supply System
The supply system works by pressurizing the building by using mechanical fans to force
outside air into the building while the air leaks out of the building through holes in the shell,
bath and range-fan ducts, and intentional vents. By pressurizing the house, these systems
discourage the entry of pollutants from outside and prevent back drafting of combustion
gases from fireplaces and appliances. The also allow air introduced into the house to be
filtered to remove pollen and dust, or to be dehumidified.
The supply system do not temper or remove moisture from the air before it enters the
house, so they may lead to a higher heating and cooling cost compared to energy
recovery ventilation system.
Page of79 96

Figure 7.2.1 Supply system in a building.
(b) Exhaust System
The exhaust ventilation systems work by depressurizing the building which is extracting
indoor air from a house while make-up air infiltrates through leaks in the building shell and
through intentional passive vents. Exhaust ventilation system is composed of a single fan
that is connected to a centrally located single exhaust point in the house. As exhaust fan
draws in outdoor air, it might draw in pollutants along with the fresh air into the house as
well, such as radon and moulds from a crawlspace, dust from an attic, fumes from an
attached garage and flue gases from a fireplace or fossil fuel-fired water heater and
furnace.
Figure 7.2.2 Exhaust/Extract System in a building.
Page of80 96

(c) Combined/Balanced System
A combined/balanced ventilation system pressurizes and depressurizes a house as they
introduce and exhaust approximately equal quantities of fresh outside air and polluted
inside air. It usually has two fans and two duct systems and it facilitates good distribution of
fresh air by placing supply and exhaust vents in appropriate places. It is mostly designed
to supply fresh air to bedroom and other common rooms such as living room and study
room where people spend the most time and also exhausts air from the rooms where
moisture and pollutants are often generated in, such as kitchen and bathrooms. It uses
filters to remove dust and pollen from outside air before introducing it into the house. A
balanced ventilation system are appropriate for all climates.
Figure 7.2.3 Combined/Balanced System in a building.
(d) Energy-Recovery Ventilation
The energy recovery ventilation system is the energy recovery process of exchanging the
energy contained in normally exhausted building or space air and using it to treat the
incoming outdoor ventilation air in residential and commercial HVAC systems. During the
warmer seasons, the system pre-cools and dehumidifies while humidifying and pre-heating
in the cooler seasons. The benefit of using energy recovery is the ability to meet
the ASHRAE ventilation & energy standards, while improving indoor air quality and
reducing total HVAC equipment capacity.
Page of81 96

Figure 7.2.4 Diagram showing how Energy-Recovery Ventilation System works.
7.3 Case Study
Combined/Balanced Ventilation System
Being a rather large shopping mall, the Publika Mall uses natural ventilation and a
combined ventilation system with both supply and extract system. The Publika Mall uses
not only conventional mechanical ventilation components, while uses new and better
components which is more efﬁcient and cost saving.
Components involved in Mechanical Ventilation System in Publika Mall.
1. Fan
1a. Propeller Fan
Figure 7.3.1 Wall mounted propeller fan in the ﬁre protection room.
Page of82 96

Figure 7.3.2 Wall mounted propeller fan in the lift tunnel.
The propeller fan (axial fan) is an air moving device in which the air ﬂow is parallel or axial
to the shaft on which the propeller is mounted. It has a good efﬁciency near free air
delivery and are used primarily in low static pressure, high volume applications. It is
usually found in small/medium industrial building, kitchen and toilets. The main function of
the fan is to discharge the stale air such as water vapour and odours in a space to the
outside. It is commonly used without connecting to ductworks and mainly placed in the
wall. Besides that, it can remove a large volume of air but it is not strong enough to force
the air through a long duct.
7.3.3 Diagram showing the movement of air through the propeller fan.
7.3.4 Diagram showing movement of air in a space with propeller fan.
Page of83 96

1b. Jet Fan System
The jet fan is a type of a compressor that increases the pressure of the air flowing through
it which can be found mainly in basement or tunnels. The effective use of the piston effect
by vehicles and natural wind boosts the ventilation, making the system very cost-effective.
The blades of the axial fan forces air to move parallel to the shaft about which the blades
rotate, flowing axially in and out linearly. It consists of two to six blades which is lesser than
ducted fans. They operate at high specific speed and the number of blades will restrict the
flow rate required for its operation. For example, the higher flow rate and low head
required, the more blades will be added to restrict it the high flow rate. The fewer blades
they has will cause them unable to impose their geometry on the flow, which will make the
rotor geometry and the inlet and outlet velocity triangles meaningless.
ASHRAE
Standard
90.1
–
2010
PART
3
HVAC
PROVISIONS

SecGon
6.4.3.4.4
VenGlaGon
Fan
Control

Fans
with
motors
>
¾
h.p
(0.5kW)
shall
have
automaGc
controls
complying
with
secGon

6.4.3.3.1
that
are
capable
of
shufng
off
fans
when
not
required.

ExcepGon:
HVAC
systems
that
operate
conGnuously.
Figure
7.4.5Jet
Fan
founded
in
the
basement
car
park
of

ASHRAE
Standard
90.1
–
2010
PART
3
HVAC
PROVISIONS

SecGon
6.4.3.4.5
Enclosed
Parking
Garage
VenGlaGon

Enclosed
parking
garage
venGlaGon
systems
shall
automaGcally
detect
contaminant
levels

and
stage
fans
or
modulate
fan
airflow
rates
to
50%
or
less
of
design
capacity
provided

that
acceptable
contaminant
levels
are
maintained.
Page of84 96

2. Filter
Air cleaning and filtration is an important factor of our indoor environment because
cleaning the air filters out what the lungs cannot by removing particles, contaminants,
vapours and gases from the air. The filtered and cleaned air then is used in heating,
ventilation and air conditioning. Air cleaning and filtration should be taken in account when
protecting our building environments.
The air introduced into the space is normally containing a certain amount of different
substances inside such as particles, contaminants, vapours, gases, bacteria, smokes and
etc. These contents have to be filtered before being introduced into the building as it might
be harmful to the user’s health if the content are being breath into the body. Thus, the filter
plays a major part to sift the air before directing them into the building. Different kind of
filters are used at different places.
2a. Activated carbon filter mesh G4
Group G of filter types is classified as filters for coarse dust particles and it is efficient for
particles ≥ 10 μm.
• This type of filter is mainly applied on
• Waste air of painting boxes and kitchens
• Protection against the pollution of air conditioning and compact instruments
• Pre-filters for the filtration classes F7 and F8
• Pre-filters and circulation filters for public protection equipment
Figure 7.3.6 Use of carbon filter mesh on the part of ductwork where air flow through.
Page of85 96

Figure 7.3.7 Use of filter at the end of ductwork.
2b. Activated carbon filter mesh M5
The filter mesh M5 is in group F of filters for fine dust which is Efficient for particals ≥ 1 μm.
It mainly separates spore, cement dust, particles creating stain or dust sedimentation and
it is mainly used as entering filters for the areas with low demand such as workshops,
storages and garage.
Figure 7.3.8 Filter mesh M5 found outside the eletricity room in the basement car park.
Figure 7.3.9 Filter mesh M5 found along the ductwork for the release of clean air.
Page of86 96

3. Fire Damper
Fire dampers are passive fire protection products used in heating, ventilation, and air
conditioning (HVAC) ducts to prevent the spread of fire inside the ductwork through fire-
resistance rated walls and floors. Fire/smoke dampers are similar to fire dampers in fire
resistance rating, and also prevent the spread of smoke inside the ducts. When a rise in
temperature occurs, the fire damper closes, usually activated by a thermal element which
melts at temperatures higher than ambient but low enough to indicate the presence of a
fire, allowing springs to close the damper blades. Fire dampers can also close following
receipt of an electrical signal from a fire alarm system utilising detectors remote from the
damper, indicating the sensing of heat or smoke in the building occupied spaces or in the
HVAC duct system.
3a. SD-T Smoke Damper
The damper used in Publika mall is different than a conventional damper, which is the SD-
T Smoke Damper. These dampers works better as compared to conventional dampers as
when the conventional dampers are fully closed, there are still some visible gaps between
the blades and the stoppers. SD-T Smoke Damper has incorporated blade seal and angle
stopper to seal up the gaps. SD-T has also improved on its jamb seal by using reinforced
stainless steel plate, which will not deform or vibrate in high pressure or when the blades
are rotating. Hence the air leakage rate has been greatly reduced.
Figure 7.3.10 Image of SD-T Smoke Damper
Description
The smoke dampers are low leakage damper constructed with triple V-groove blades
designed to be used in ducts that penetrate smoke rated barriers. He SD-T may be
installed vertically or horizontally of a smoke barrier and is designed for use in systems
with airflow in either direction with velocity up to 2000dpm and pressure up to 4”w.g.
Page of87 96

Figure 7.3.11 axonometric view of SD-T Smoke Damper
Figure 7.3.12 Construction Illustration of SD-T Smoke Damper
Figure 7.3.13 Comparison diagram of conventional damper and SD-T smoke damper.
Page of88 96

Figure 7.3.14 Sectional drawing showing the installation of SD-T smoke damper.
Material
• Frame: Galvanized steel, 1.5mm thickness.
• Blade: Galvanized steel, 1.5mm thickness.
• Blade Seal: Silicone strip (Fire resistance up to 250’C)
• Jamb Seal: Reinforced Stainless steel plate, compression type.
• Bearing: Bronze bush pressed into frame.
• Axles: Square steel bar shaft.
Surface Finish
• Mill galvanized
Blade Action
• Parallel blade
Blade Dimension Limits
• Maximum blade length= 1000mm
• Maximum blade width=160mm
ASHRAE
Standard
90.1
–
2010
PART
3
HVAC
PROVISIONS

SecGon
6.4.3.4.2
VenGlaGon
Shutoﬀ
Damper
Controls

All
o.a.
intake
and
exhaust
systems
shall
be
equipped
with
motorized
dampers
that
will
automaGcally
shut

when
the
system
or
spaces
served
are
not
in
use.

ExcepGons

Page of89 96

4. Grille and Diffuser
4a. Return Air Grilles
A return air grille is connected to the end of a ductwork that allows air to return to a heating
and cooling system. Return air openings are covered with grillwork that serves a certain
functions. In the ventilation system, the central furnace or air conditioner pushes air out
through a system of ducts into the rooms of a structure for temperature control and also
pulls air in through return ductwork. The air sucked into the system is heated or cooled as
needed and redistributed the desired spaces. They also act as a cover for the ductwork so
that people do not look at it, as for aesthetical and safety purpose. It also prevents large
objects from entering the ducts that might damage the system.
Figure 7.3.15 Return air grille found outside ACHU room in the basement car park.
Figure 7.3.16 Return Air Grille located on the ceilings of along the corridor.
4b. C Curve Blade Return Air Grille
The air grille used in PUBLIKA mall is called the C curve blade return air grille, which is a
one way square return air grille. It is face mounted for easy installation on walls and
ceilings. It has a inconspicuous ﬁngertip lever for air volume control.
Page of90 96

Figure 7.3.17 Detail drawing of C curve blade return air grille.
Figure 7.3.18 Diagram showing air movement going out from the grille.
Materials
• RC-A Extruded aluminium A6063.
• RC-T Galvanized steel.
Surface Finish
• Baked white powder coat or natural anodized.
Features
• The shape of the curved blade is approximately one eighth of the circumference of
a circle.
• Suitable to install on wall for return air application
• The grille will come in more sections for blade length that is more than 600mm.
• Approximately 48% free area.
Accessories
• R6 Insect nettings.
• D2 Square to round adapter.
Page of91 96

5. Pressurisation System
A pressurisation system protects escape routes and fire-fighting shafts against the ingress
of smoke. Smoke and fire ventilation is maintained by the pressure within the escape route
being higher than that in the adjacent spaces. They provide no protection within the space
containing the fire, but contain the smoke and heat so that it cannot enter the main building
escape routes.
Components in a pressurisation system that creates a positive pressure difference which
prevents lobbies and staircases from filling up with smoke:
• Air Supply (where air is introduced into the area that is to be protected)
• Pressure Relief (to avoid overpressure when doors are closed)
• Air Release (air and smoke is released form the adjoining fire area)
The System Comprises:
• Inlet Fans for introducing air into the designated area. The run and standby fans
and control equipment should be housed in a separate plant room or outdoors and
the inlet should be protected from smoke. Dual inlets with automatic smoke
dampers are required for high level inlet.
• Ductwork and Outlet Grilles, to provide distribution of air exactly where it is needed.
• Pressure relief dampers, to release excess air in the closed door condition from the
stair area. This should be ducted to discharge directly to atmosphere independent
of the wind direction. Damper blades are set to start opening at 50 Pa pressure
differential.
• Automatic air release to prevent unwanted pressure build up in the adjacent
spaces. This may be automatic vents, natural shafts or mechanical extract systems.
• The control system should operate automatically from the smoke detection system
with a manual on/off switch also provided within either the pressurisation plant
room, near the building entrance (to suit fire service), or within the central building
services control room.
Page of92 96

Each of the pressurisation system in publika is designed speciﬁcally for the type of space
and based on the requirements.
7.3.19 Staircase Pressurization System at staircase 1
7.3.20 Staircase Pressurization System at staircase 2
Page of93 96

7.3.21 Lift Lobby Pressurization System
ASHRAE
Standard
90.1
–
2010
PART
3
HVAC
PROVISIONS

SecGon
6.4.3.4.5
Enclosed
Parking
Garage
VenGlaGon

Enclosed
parking
garage
venGlaGon
systems
shall
automaGcally
detect
contaminant
levels
and

stage
fans
or
modulate
fan
airﬂow
rates
to
50%
or
less
of
design
capacity
provided
that

acceptable
contaminant
levels
are
maintained.
Page of94 96

7.4 Conclusion for Mechanical Ventilation
In conclusion, the use of combined/balanced system is the best option for a rather large
mall like Publika. The usage of different mechanical ventilation components at appropriate
places has created a space which is thermally comfortable. Besides that, an appropriate
level of humidity and air freshness which bought by the replenishment of oxygen and
exchanging of carbon dioxide has allowed the visitors feel comfortable in the mall. More
than that, the ventilation system does not cover only for the upper levels of the mall, the
lower levels which is the basement car park consists of the Jet Fan system that increases
the ventilation level for the comfort of the users inside the car park.
The ventilation system in Publika is not only for the comfort of visitors, but also the safety
of visitors by the use of fire dampers and pressurization systems which is specifically
designed. Instead of conventional fire dampers, Publika uses SD-T Smoke Damper which
is more efficient and cost saving. The different types of filter being used in different places
are taken in consideration to ensure the appropriate usage of filter at places, thus the
correct particles will be filtered and may not harm the people inside. The pressurization
system are specially designed for each of the spaces such as staircases and lift lobby.
The mechanical ventilation system in Publika compiles with the regulations set by the
bodies such as the UBBL and ASHRAE standards. This has ensure that the right and
correct usage of components in the building.
Page of95 96

Reference
Fire Protection
1. https://www.mdkl.gov.my/documents/10124/305128ab-f7f0-4547-9124-27a3cee67bdc
2. http://www.understandconstruction.com/understand-fire-fighting-systems.html
3. http://www.mfs.sa.gov.au/site/community_safety/commercial/building_fire_safety/
fire_fighting_systems_and_equipment_in_buildings.jsp
4. https://www.eagle.org/eagleExternalPortalWEB/ShowProperty/BEA%20Repository/
Rules&Guides/Current/141_FireFightingSystems/Pub141_FireFighting
5. http://gcc.glendale.edu/fire/Documents/ClassMaterials/
Ch36.FireDetection&SuppressionSystem.PPHandout.pdf
Air Conditioning
1. All About Air Conditioning. (n.d.). Retrieved November 23, 2015, from https://
www.ashrae.org/resources--publications/free-resources/top-ten-things-about-air-
conditioning
2. Bibliography. (n.d.). HVAC Engineer's Handbook, 224-227.
3. The Load Sub-System - Air-Conditioning Equipment. (n.d.). Solar-Assisted Air-
Conditioning in Buildings, 7-14.
4. http://www.hvac.com
Mechanical Ventilation and Transportation
1. http://www.solutionsforair.com/dayton_content/pdfs/ventilationfundamentals.pdf
2. http://www.ksklimaservice.com/en/classification-of-filters-filter-properties-and-typical-
examples-of-use
3. http://www.troyfilters.com/resources_files/HVAC%20Filtration%20101.pdf
4. http://energy.gov/energysaver/whole-house-ventilation
5. http://www.aslidiffuser.com.my/product/attachment/files/1287554324-08SD-T.pdf
6. http://www.seco.cpa.state.tx.us/tbec/docs/ASHRAE90.1-2010_PartIII.pdf
Page of96 96

Service ready to print (1)

More Related Content

What's hot (19)

Viewers also liked (20)

Similar to Service ready to print (1) (20)

More from Anthony Chew (20)

Recently uploaded (20)

Service ready to print (1)