Week 2 gb course
- 2. Discussion: Green Building Survey
- 3. Q1: Would you like to work in a green building?
- 4. Q2: Would you like to live in a green building?
- 5. Q3: Is Green Building more expensive to construct than standard building designs?
- 6. Q4: Should every new building designed in Vietnam be a Green Building?
- 7. Q5: Can a building with Air Conditioning be called a Green Building?
- 8. Q6: Should all Green building include onsite renewable energy production (eg Solar or Wind power)?
- 9. Q7: The most important party (group of people) in achieving “Green Building” is…
- 10. Government incentives to build Green 4 14% The government to “lead by example” and build Green Buildings 7 25% Stricter laws on building design 5 18% Advertising campaigns about Green Building 1 4% Teach Architects and other professionals about Green Building 2 7% Support industries providing eco- products or highly efficient equipment 5 18% Other 4 14% Q8: The best way to promote Green Buildings in Vietnam is…
- 11. Energy Efficiency 7 25% Water Efficiency/recycling/ harvesting 1 4% Sustainability of Materials 3 11% Renewable Energy 4 14% Management 8 29% Other 5 18% Q9: What is the most important consideration when designing Green Buildings in Vietnam?
- 12. Passive Design Definition Design where climatic and site conditions are considered to keep the building naturally cool in summer and warm in winter, with adequate ventilation and a comfortable level of natural light while requiring no input of energy for thermal control. Hybrid systems use a variety of cooling options (including air- conditioning) in the most effective way. They take maximum advantage of passive cooling when available and make efficient use of mechanical cooling systems during extreme periods.
- 13. Tools for Passive Design Software Data and Information
- 15. Ecotect Analysis: Whole-building energy analysis—Calculate total energy use and carbon emissions of your building model Thermal performance—Calculate heating and cooling loads for models. Water usage and cost evaluation—Estimate water use inside and outside the building. Solar radiation—Visualize incident solar radiation on windows and surfaces Daylighting—Calculate daylight factors and illuminance levels Shadows and reflections—Display the sun’s position and path
- 17. ARUP Passive Design Assistant Tool http://www.arup.com/Publications/Passive_Design_Assistant. aspx
- 18. Climate Data: Temperature, (degree days) http://www.degreedays.net/ QCVN 02 : 2009/BXD
- 19. Climate Data: Humidity QCVN 02 : 2009/BXD
- 20. Climate Data: Rainfall QCVN 02 : 2009/BXD
- 27. Factors affecting Microclimate: Elevation, Topography, Water Bodies, Vegetation, Heat Island affect
- 29. Passive Design Exercise Location: Hoa Thach, Ha Noi (near Hoa Binh) Project: 4 villas and ladscaping, Each villa: 180m2 Consider: - Microclimate - Orientation of buildings - Orientation of living spaces/bedrooms - Floorplate? How many levels? - Ventilation - Glazing (type and dimensions) - Shading (type and dimensions) - Landscaping - Innovative features?
- 30. Fundamentals of Passive Design
- 31. Fundamentals of Passive Design
- 35. North Facing House (Hiroshi Sanbuichi, Yamaguchi, Japan)
- 36. Shading -Overhangs (eaves) -Shading device (louvers, -planting
- 37. Shading
- 38. Louvers and shading devices
- 39. Glazing -Window to Wall ratio
- 40. Glazing -Low-E (Emissivity) -tinted -reflective coating -Double (triple) glazing Concepts -SHGC (Solar heat gain coefficient) -Emissivity -VT (Visible Transmittance)
- 41. Glazing and Insulation> Saigon Case study
- 42. Materials (Hot tropical and Hot dry summer) *Southern Hemisphere
- 43. Materials (Courtyard and Nightime cooling) *Southern Hemisphere
- 46. Where to install insulation? - Under the roofing material>reduce radiant heat gain. - In the ceiling> reduce heat gain and loss - In walls> reduce conducted, convected and radiant heat transfer -Underside of suspended floors> In hot or humid climates where AC is used
- 47. Thermal Mass
- 48. Seasonal Thermal Mass -Europe: Switzerland, Berlin (Germany), Ireland Ice storage -Rokko Shidare observatory
- 49. Seasonal Thermal Mass & Ice Storage
- 50. Thermal Mass and “Earth coupling”
- 51. Underground thermal control (tubes/chambers)
- 53. Evaporative Cooling -Pot in Pot (Zeer) – Northern Africa -Coolgardie safe (1890’s) - Australia
- 54. Evaporative Cooling> Applications in architecture -Effectiveness depends on difference between wet-bulb and dry bulb temperature
- 55. OTTV Overall Thermal Transfer Value
- 56. OTTV Overall Thermal Transfer Value - QCXDVN 09/2005 (EEBC) - New version (2014?) - Used in Singapore, Phillipines, Malaysia, Jamaica, Hong Kong, Thailand
- 57. Term 1: Heat conduction due to absorption of solar radiation by opaque surface Term 2: Heat conduction through opaque elements due to temperature difference
- 58. Term 3: Transmission of solar radiation through transparent elements Term 4: Heat conduction through transparent elements
- 59. OTTV in LOTUS and calculation of reduction
- 60. Example “compliant” wall in Hanoi -35% WWR
- 61. Example “compliant” roof in Hanoi -Why terms 1 & 2? -5% glazing
- 63. OTTV case study
- 64. Standard Office Premium Office
- 65. Standard Office – BASE CASE
- 67. Standard Office – WALLS applying measures 1 at a time
- 68. Standard Office – WALLS measures applied cumulatively
- 69. Standard Office – ROOF applying measures 1 at a time
- 70. Standard Office – ROOF measures applied cumulatively
- 71. Premium Office – BASE CASE -Clear double glazing assumed
- 72. Premium Office – BASE CASE -Clear double glazing assumed
- 73. Premium Office – WALLS applying measures 1 at a time
- 74. Premium Office – WALLS measures applied cumulatively
- 75. Premium Office – ROOF applying measures 1 at a time
- 76. Premium Office – ROOF measures applied cumulatively