Figure 3.2.15 Illustration of light shelves
(Source: Hysan Development Company Limited)
Figure 3.2.16 Effect of façade
(Source: Henderson Land Development Company Limited)
Office
UNIT
Case study of Hysan Place:
Light Shelves
Careful considerations were made to obtain a
balance between optimal views and best use of
natural light on the one hand and to keep energy
consumption low on the other, thus it can reduce the
HVAC and lighting energy consumption and enhance
the thermal comfort level of the occupants in the
perimeter zone.
Custom-designed ‘Light Shelves’ with a profiled
reflective ceiling reflect daylight deep into the interior
of each office while offering a magnificent panorama
of the harbour along the north side of each office
floor. The light shelves reduce glare and excessive
lighting in the perimeter zone of the office, whilst
reducing contrast with the interior.
DESIGN STAGE
3.2.3 Natural Daylight
Office
BUILDING
Case study of Dennis
Lau & Ng Chun
Man Architects &
Engineers Office:
Low Partition Wall
Use of low partition wall and open
plan design allows daylight in while
maintaining privacy. Generally the
lower the partition, the more daylight
can enter. However, it must not be
too low in order to maintain a good
acoustic environment and the staff’s
concentration. Moreover, staff can have
a visual connection with the outside
world. It not only improves the wellbeing
of the staff but also saves energy needed
for lighting.
Figure 3.2.17 Low partition wall with glass
and open plan design to enhance daylight
penetration
(Source : Dennis Lau & Ng Chun Man Architects &
Engineers)
Case study of Conservation
International Hong Kong-
Green Sky:
Glass Partition Wall
Use of glass partition walls makes the entire office
bathe in sunlight, which eliminates the need for
constant artificial lighting while allowing all staff to
have natural light and a harbour view. All artificial
lighting uses low-energy and long-life LED bulbs.
Figure 3.2.18 Glass partition wall of Green Sky
(Source: Conservation International Hong Kong)
Case study of 18 King
Wah Road:
Sun Shading Device
Sun shading tackles the low angle of the
afternoon sun. The sun shade extends outwards
but also downwards to help mitigate the effects
of the harsh afternoon sun. By bringing the
shading device downwards, the maximum
amount of surface area can be protected without
jeopardising the view. On the other hand, during
the morning hours, the sun is at a higher angle
in the sky. The sunshade at the southwest corner
extends out to block the higher early morning
and mid-day sun. The sunshade can also extend
in a horizontal direction, which helps to bring
indirect lighting into the space, without affecting
the view of the outside.
DESIGN STAGE
3.2.3 Natural Daylight
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