5.9
Advanced technology
With concerns about climate change and carbon emissions, many new technologies have been developed and are
available in the commercial market. The following energy saving technologies may be considered:
5
Energy efficient building systems for shopping malls and shop spaces
5.9
Advanced technology
Integrated solar/hydro-
powered sensor water tap
• Indoor light and excessive kinetic energy from water flow
are converted to electrical power by a micro hydro-turbine
to operate the solenoid valve for the water taps.
Digital addressable
lighting interface system
• All lighting has its device-specific address and can be
controlled individually to suit the time of operation and
the lighting power output as well as interfacing with
sensors to adjust the lighting level.
LED lighting
• Many different types of LED lighting are now on the
market with good colour temperature and rendering,
a much longer life than incandescent lamp or
fluorescent tube and at a reasonable price.
Variable speed permanent
magnet fan coil unit
• This uses a permanent magnet motor and intelligent
programmable thermostat to adjust the fan speed
according to room temperature changes.
• It saves on energy consumption for both the driving
fan and air-conditioning system.
Solar absorption chiller
• This uses thermal collectors to power air-conditioning.
• Water heated by the sun in collectors initiates a thermal
dynamic process in chambers that chills water to 7°C.
• It is passive with no moving parts and no electrical input.
Oil free frictionless chiller
• This has gained market popularity with a much better
efficiency in part-load operation when compared with
traditional screw or centrifugal chillers.
142 Hong Kong Green Shop Guide
