GREEN TIPS
GREEN TIPS
3.5.2 Natural ventilation
To optimise the use of natural ventilation,
direction must be determined. This can be done by checking
the relevant information on the Hong Kong Observatory’s website. It is important to orientate the building so that window
openings are located according to the most desirable orientation to capture the
for more effective natural
ventilation.
3.5.3 Solar heat gain
Orientating the building’s long side to face the north and the south while minimising the frontage on the east and west
sides will help to minimise solar heat gain by the building.
North facing façades receive the least amount of solar heat. Skylights facing north will also acquire less solar heat.
This means that the interior space will not become too hot and that less energy will be used for air-conditioning.
3.5.4 Glare
To avoid glare caused by skylights and glass areas, it is important to avoid siting skylights and glass areas to face West.
Where the problem of glare is encountered, measures should be taken to reduce glare by adding exterior shading
screens or using tinted or fritted glass.
3.5
Orientation
Measures to reduce solar heat gain through orientation
Measures to reduce glare from skylights by orientation
1. Avoid skylight and glass
area facing west
2. Other useful means: Add exterior
shading screens or use tinted glass
or fritted glass
1. Long frontage facing
north and south
2. Short sides facing
east and west
3. Other useful
methods: Use low-E
glass/Double glazing
for better thermal
insulation
3
Planning for shopping malls and shop spaces
Hong Kong Green Building Council 85
