Office
BUILDING
DESIGN STAGE
3.1.1 Sustainable Architectural Design
Case study of Energizing
Kowloon East Office:
Natural Ventilation
Perforated external walls in the form of a bamboo
trellis were installed to capture cool breezes to the
courtyard area. Windows were installed on opposite
sides of the office areas and in the Information Kiosk to
facilitate cross ventilation.
Daylight
To enhance daylighting, the underside
of the Kwun Tong Bypass, painted in
light colour, is used as a light-reflector
to reflect daylight, making the central
courtyard well-lit throughout the day without artificial
lighting.
Shading
The building disposition was carefully planned such
that around 80% of the roof area is covered by the
Highways structure above (Kwun Tong Bypass) to
minimise solar heat gain.
Figure 3.1.3 Perforated external wall
(Source: Energizing Kowloon East Office)
Case study of
Hong Kong Science
and Technology
Park:
Sustainable Master Layout Plan
• optimise building disposition,
orientation, separation and layout
to reduce air-conditioning loads
• enhance air ventilation at
pedestrian zones, with an average
1.5m/s breeze
• extend landscaping to 40% of site
area helps to minimise the urban
heat island (UHI) effect
• optimise natural lighting using
courtyards to help to reduce
internal artificial lighting demand
Figure 3.1.1 Master layout of Hong
Kong Science and Technology Park
(Source: Hong Kong Science and Technology
Parks Corporation)
DESIGN STAGE
3.1.1 Sustainable Architectural Design
Office
BUILDING
Case study of Zero Carbon
Building:
Natural Ventilation
Wind catchers are adopted to enhance natural ventilation
by harnessing wind through the passive stack effect.
Weatherproof louvers and internal dividers allow fresh air
intake from any direction with exhaust of stale air in the
opposite half of the wind catcher by natural means. A
25% increase in local air speed is expected.
Figure 3.1.2 Sustainable design of Zero Carbon Building
(Source: Hong Kong Construction Industry Council)
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