Page 160 - Hong Kong Green School Guide

5. Operations and Maintenance - 5.2 Building Monitoring
Hong Kong Green School Guide 158
A Bright Idea for Saving Energy and Our Planet
Tai Koo Primary School
With a view to saving energy, Tai Koo Primary School worked with a
professional team to perform an energy audit on its building.
The objectives of an energy audit are to understand energy consumption
patterns and to identify energy improvement measures. The outcome of
the school’s energy audit successfully identified a number of measures
for reducing energy consumption. Some measuers are shown below:
Improvement Measures Estimated
Annual Cost
Saving
Capital
Cost
Payback
Cut off power supply of split type
air-conditioning units during standby
mode operation
$14,300
(11,000 kWh)
$0 Immediate
Replace 4 35-watt tungsten halogen
lamps with LED 7W lamps in life
$500
(380 kWh)
$1,000 2 Years
Replace 42 18-watt fluorescent lamps
with LED for exit signs
$6,400
(4,900 kWh)
$23,100 3.6 Years
Install 72 faucet adaptors to reduce
water use
$1,200
(200m 3 water)
$9,000 8 Years
The audit cost of the school was relatively small as compared to the
potential electricity cost savings that the audit revealed.
Source: The information and photos are provided by Swire Properties Limited
How Does Your School Compare?
(6) The Government of Hong Kong Special Administrative Region. Electrical and
Mechanical Services Department. (n.d.). Energy Consumption Indicators and
Benchmarks for Residential, Commercial and Transport Sectors. Retrieved 1 June,
2012, from
http://ecib.emsd.gov.hk/en/index00.htm
Other Useful Information
(7) The Government of Hong Kong Special Administrative Region. Electrical and
Mechanical Services Department. (2012). Code of Practice for Building Energy
Audit. Retrieved 1 June, 2012, from
http://www.emsd.gov.hk/emsd/e_download/pee/EAC_2012.pdf