Energy modeling project
- 1. ELLIS RESIDENCE Building Information Front View & Floor Plan Orientation of Views Locations South-East Side South-West Side Architects: Coates Design General Contractor: Smallwood Design and Construction Mechanical Engineer: Sound Mechanical Project Area: 2,560 sqf Project Year: 2010 Bainbridge Island,Washington, USA Hui Ling Chang
- 2. Hui Ling Chang Sun Chart Direct Normal Radiation Monthly Diurnal Averages Monthly Diurnal Averages Legend-hourly averages Wind Wheel Legend WEATHER CONDITIONS
- 3. Building Performance Evaluations Modeling energy performance of selected building in different software Energy Pro HEED Modeling Tools HEED EnergyPro Energy Plus Design Builder IESVE EQUEST DesignBuilder IESVE IES eQUEST SIMULATION TOOLS Hui Ling Chang
- 4. Design Summary Chart HEED Energy Pro eQuest Design Builder IES-VE Heating sys Best furnace 0.97 AFUE Best furnace 0.97 AFUE Cooling sys Split System, 19.5 SEER Split DX, 19.5 SEER Packaged Terminal Heat Pump Split System Split System DHW Heat Pump Energy factor=2 Electric Heat Pump Electricity Equipment Electric Heat Pump N/A Wall Stucco, 9" insulated foam forms concrete filled and plaster board interior Masonry, R-21 Wall 8 in. CMU with wood external finish Wall 116 (Mass Wall) 8 In. Heavy Weight Concrete Block Insulation Superer insulation to 2 times curren code Insulation 2 in. polyisocyanurate R- 12 R-28 Insulation Board 4 In. Insulation Roof Flat and sloped roof R-38 RoofAttic 8 in. Concrete Flat roof - 19mm asphalt on 75mm screed 4 In. Wood with 12 In. Insulation( ASHRF 212, U=0.0204) Floor Slab on grade exposed or tiled Concrete vert ext bd, R-20, 4ft deep IECC-2000 Ground floor slab Heavyweight Concrete Slab Internal Ceiling (CNCR0001, U=0.3468) Infiltraion 1.5 SLA 0.06ACH 0.001 CFM/SF 0.06ACH N/A Glazing Clear Triple Pane 1/8" in wood frame Triple Pan, U=0.260 SHGC=.0200 Triple Low-E(e5=o.1) Clear 1/8", 1/4" Air Trp LoE (e5=.1) Clr 3mm/13mm Arg Low-E Triple Glazing SHGC=0.1576, U=0.2563) HEATING LOAD EUI COOLING LOAD EUI HOT WATER EUI TOTAL EUI/2 EUI(KBTU/SF/Y) HEED EnergyPro eQuest Design Builder IES-VE WareEUI of various Best Design Buildings DESIGN CONDITIONS Hui Ling Chang
- 5. Description The heating and cooling change in different ways in different software by replacing the furnace with heat pump. Monthly Energy Consumption by End Use Energy Performance EVALUATION IN EQUEST Hui Ling Chang
- 6. Description For larger area of window with furnace and heat pump systems When increasing the area of windows, the design with heat pump decreases more energy because it not only decreases heating energy but also reduces hot water consumption As built-furnace Best Desgin1-heat pump Best Desgin1- with overhangs for all windows As built-furnace-bigger windows Best Desgin1- with overhangs for bigger windows Eergy Type Electricity Natural Gas Electricity Natural Gas Electricity Natural Gas Electricity Natural Gas Electricity Natural Gas Unit kBtu/sf yr kBtu/sf yr kBtu/sf yr kBtu/sf yr kBtu/sf yr kBtu/sf yr kBtu/sf yr kBtu/sf yr kBtu/sf yr kBtu/sf yr Space Cool 0.00 0.00 2.73 0.00 1.30 0.00 0.00 0.00 2.50 0.00 Space Heat 0.00 13.49 0.85 0.00 1.26 0.00 0.00 15.19 1.00 0.00 HP Supp. 0.00 0.00 0.81 0.00 1.00 0.00 0.00 0.00 0.91 0.00 Hot Water 0.00 11.05 0.00 11.06 0.00 11.07 0.00 11.05 8.10 0.00 Vent. Fans 3.18 0.00 3.54 0.00 3.01 0.00 3.03 0.00 1.70 0.00 Ext. Usage 1.57 0.00 1.57 0.00 1.57 0.00 1.57 0.00 1.57 0.00 Misc. Equip. 5.76 0.00 5.76 0.00 5.76 0.00 5.76 0.00 5.76 0.00 Area Lights 2.27 0.00 2.27 0.00 2.27 0.00 2.27 0.00 2.27 0.00 Sub Total 12.78 24.54 17.53 11.06 16.18 11.07 12.63 26.23 23.80 0.00 Total 37.30 28.60 27.25 38.80 23.70 Hui Ling Chang
- 7. Description The target building was modeled in Energy Plus and the space is divided into five zones 3D Model Zoning Chart of System Energy Heating and Cooling Plants Summaries Level 2 Level 1 EVALUATION IN IES Hui Ling Chang
- 8. Generally, the solar gain does not positively affect external heat conduction gain Solar Gain & External Conduction Orientation & Sensible Load Total Energy System to Sub-system Energy Room No. Orientation Floor Area Heating Plant Sensible Load in Jan. Btu/ft2 External Conductio n Gain in Jan. kBtu/ft2 1 Overall 1705 0.7 1.99 3 North-west 181 0.94 1.19 4 North-east 171 0.95 1.22 5 South-west 190 0.85 1.06 6 South-east 179 0.87 0.92 The north-east rom has highest heating plant sensible load, but the south-west room has the lowest external conduction gain Total system energy is compose of 33% electricity that supports auxiliary vent and DHW and 67% gas supports boiler Hui Ling Chang
- 9. Description Evaluate the relation between orientation and solar radiation distribution Information of Target Room Room Size: 15’x 10’x 10’ ( L x W x H ) Window of Wall Ratio: 20% Window Size: 5’x 6’ Location: Los Angeles North Window South Window West Window East Window EVALUATION OF DAYLIGHTING Hui Ling Chang