Hong Kong Climate and
Green Building Design
Dr Ernest Tsang
Monday, 5 August, 13
Maximum Dry Bulb
Temperature:34.9°C
(0.4% Significant Level)
Corresponding Wet Bulb
Temperature:26.9°C
Daily Temperature Ra...
Daily Average Wind Speed:
2.8-3.7m/s
Prevailing Wind Direction:
NE(Winter)
SE(Summer)
Monday, 5 August, 13
Global Irradiance Diffuse Irradiance Direct Irradiance
0
1,250
2,500
3,750
5,000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct N...
~30% Overcast Sky
~15% Clear Sky
Remaining Partly Cloudy
Monday, 5 August, 13
Why we need GREEN
BUILDING?
Monday, 5 August, 13
30% of the World’s
Energy Consumption
Monday, 5 August, 13
12%of World’s Water
Consumptions
Monday, 5 August, 13
30% of World’s Solid Waste
Monday, 5 August, 13
11% Dead related
to Poor Indoor
Environment
Monday, 5 August, 13
60% of GHG
emission from Buildings
in Hong Kong
Monday, 5 August, 13
Buildings
consume 90%
Electricity
Consumption
Monday, 5 August, 13
Subtropical HK
Cooling dominated
Monday, 5 August, 13
High RH
Dehumidification
dominated
Monday, 5 August, 13
Phase Change
Material does not
employed in HK
Monday, 5 August, 13
NaturalVentilation
does not
frequently use in
Hong Kong
Monday, 5 August, 13
Marco-wind Turbine
does not suitable in
the Urban Area
Monday, 5 August, 13
Active Solar System
does not suitable
under Overcast Sky
Monday, 5 August, 13
Passive Solar
Building
Monday, 5 August, 13
Regulations
governing
Building Energy
Efficiency
Monday, 5 August, 13
The new COP is
enforced in 2012
Using Building Energy
Budget Approach
Monday, 5 August, 13
Lighting
installations, given
in Section 5
Lighting control
Monday, 5 August, 13
Air-conditioning
installations, given in
Section 6
System load calculation 
Separate air distribution system for
process z...
Electrical
installations, given
in Section 7
Motor installation
Power quality
Metering and monitoring
facilities
Monday, 5...
Lift and escalator
installations, given
in Section 8
Electrical power
Utilization of power
Total harmonic distortion
Meter...
Energy efficiency
requirements on
building envelope:
Overall thermal transfer
value, requirements same
as given in
Building...
Hong Kong
BEAM PlusVersion 1.2
Issued by Hong Kong Green Building
Council & BEAM Society
With special emphasis on safety, ...
Overall
SA
EU
IEQ
40 50 60 70 80 90 100
% of Credit
IA
0 1 2 3
Number of Credit
Bronze Silver Gold Platinum
Monday, 5 Augu...
Gross Floor Area Concession
10% max for undergoing Green Building
Assessment Process
Monday, 5 August, 13
Major
Difficulties
Monday, 5 August, 13
Low
Energy Cost
Monday, 5 August, 13
Environmental
Cost
Monday, 5 August, 13
Corporate
Social
Responsibility
Monday, 5 August, 13
Dr Ernest Tsang
tsang.ernest@pbworld.com
Monday, 5 August, 13
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20130805 Presentation for Rotary Club of Kai Tak

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This is a green building and building services engineering introduction for non-building and non-engineering background professionals

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20130805 Presentation for Rotary Club of Kai Tak

  1. 1. Hong Kong Climate and Green Building Design Dr Ernest Tsang Monday, 5 August, 13
  2. 2. Maximum Dry Bulb Temperature:34.9°C (0.4% Significant Level) Corresponding Wet Bulb Temperature:26.9°C Daily Temperature Range (DBT):4.2-5.5°C Daily Temperature Range (WBT):2-3.5°C (5% Significant Level) Monday, 5 August, 13
  3. 3. Daily Average Wind Speed: 2.8-3.7m/s Prevailing Wind Direction: NE(Winter) SE(Summer) Monday, 5 August, 13
  4. 4. Global Irradiance Diffuse Irradiance Direct Irradiance 0 1,250 2,500 3,750 5,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Irradiance(W/m2) Monday, 5 August, 13
  5. 5. ~30% Overcast Sky ~15% Clear Sky Remaining Partly Cloudy Monday, 5 August, 13
  6. 6. Why we need GREEN BUILDING? Monday, 5 August, 13
  7. 7. 30% of the World’s Energy Consumption Monday, 5 August, 13
  8. 8. 12%of World’s Water Consumptions Monday, 5 August, 13
  9. 9. 30% of World’s Solid Waste Monday, 5 August, 13
  10. 10. 11% Dead related to Poor Indoor Environment Monday, 5 August, 13
  11. 11. 60% of GHG emission from Buildings in Hong Kong Monday, 5 August, 13
  12. 12. Buildings consume 90% Electricity Consumption Monday, 5 August, 13
  13. 13. Subtropical HK Cooling dominated Monday, 5 August, 13
  14. 14. High RH Dehumidification dominated Monday, 5 August, 13
  15. 15. Phase Change Material does not employed in HK Monday, 5 August, 13
  16. 16. NaturalVentilation does not frequently use in Hong Kong Monday, 5 August, 13
  17. 17. Marco-wind Turbine does not suitable in the Urban Area Monday, 5 August, 13
  18. 18. Active Solar System does not suitable under Overcast Sky Monday, 5 August, 13
  19. 19. Passive Solar Building Monday, 5 August, 13
  20. 20. Regulations governing Building Energy Efficiency Monday, 5 August, 13
  21. 21. The new COP is enforced in 2012 Using Building Energy Budget Approach Monday, 5 August, 13
  22. 22. Lighting installations, given in Section 5 Lighting control Monday, 5 August, 13
  23. 23. Air-conditioning installations, given in Section 6 System load calculation  Separate air distribution system for process zone Air distribution ductwork leakage limit Pumping system variable flow Frictional loss of water piping system System control Thermal insulation Energy metering Monday, 5 August, 13
  24. 24. Electrical installations, given in Section 7 Motor installation Power quality Metering and monitoring facilities Monday, 5 August, 13
  25. 25. Lift and escalator installations, given in Section 8 Electrical power Utilization of power Total harmonic distortion Metering and monitoring facilities Monday, 5 August, 13
  26. 26. Energy efficiency requirements on building envelope: Overall thermal transfer value, requirements same as given in Building (Energy Efficiency) Regulation (Cap.123M) Monday, 5 August, 13
  27. 27. Hong Kong BEAM PlusVersion 1.2 Issued by Hong Kong Green Building Council & BEAM Society With special emphasis on safety, hygiene, reducing pollution and resource Site Aspect (SA) Material Use (MU) Energy Use (EU) Water Use (WU) Indoor Environmental Quality (IEQ) Innovation and Additions (IA) Monday, 5 August, 13
  28. 28. Overall SA EU IEQ 40 50 60 70 80 90 100 % of Credit IA 0 1 2 3 Number of Credit Bronze Silver Gold Platinum Monday, 5 August, 13
  29. 29. Gross Floor Area Concession 10% max for undergoing Green Building Assessment Process Monday, 5 August, 13
  30. 30. Major Difficulties Monday, 5 August, 13
  31. 31. Low Energy Cost Monday, 5 August, 13
  32. 32. Environmental Cost Monday, 5 August, 13
  33. 33. Corporate Social Responsibility Monday, 5 August, 13
  34. 34. Dr Ernest Tsang tsang.ernest@pbworld.com Monday, 5 August, 13

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