From the chart on the previous page, it is easily seen that more than one-third of the electricity cost in a shopping mall is
spent in connection with food and beverage (e.g. cooking, hot water for steaming, refrigeration for freezing, etc). Another
one-third of the electricity is expended on cooling and heating for shops, foyers, arcades and indoor seating spaces. The
remaining major element of electricity expense is internal lighting. Concrete ways of energy savings will be specifically
discussed in detail in
Figure 14 Energy efficiency in typical shopping malls
Source: The Link Management Limited
2.1
What makes a building green?
Sweden (41 studies)
279
291
430
262.2
Norway (41 studies)
Hong Kong (year 2002)
Stanley Plaza
Energy efficiency in typical shopping malls (kWh/m
2
/year)
(Source: The Link Management Limited)
Energy saving in a shopping mall
Stanley Plaza
The project focuses on the air-conditioning system and lighting system in order to achieve energy savings:
Air-conditioning system
• Implementation of variable speed drives (VSDs) for the chilled water pump to provide control of
the primary variable flow chiller system.
• A thermal wheel is adopted to pre-cool the fresh air supplied to shop owners (tenants).
• Primary
(PAUs) are equipped with two-speed control.
• Adequate metering is installed for
purposes.
Lighting system
• PLC-tube and T5 tubes.
• Solar hybrid and wind turbine light poles.
• LED façade lighting.
• Solar sensors and automatic controls.
2
The basics
50 Hong Kong Green Shop Guide
