Benefits for Office Building
Maintaining the Mechanical &
Electrical (M&E) system regularly can
retain the building services system’s
operational efficiency and reduce
operational costs.
It can help lower the chances of
system failure and increase energy
efficiency.
Benefits for Office Unit
Maintaining the M&E system regularly
can retain the building services
system’s operational efficiency and
reduce operational costs.
It can help lower the chances of
system failure and increase energy
efficiency.
z
Clean cooling coils and heat
transfer surfaces regularly
z
Clean the diffuser of light fittings
regularly
z
Replace/clean blocked air filters
regularly
z
Implement ISO 50001
Maintain Energy Efficiency
Overview
Lack of maintenance of the M&E system will reduce the energy efficiency
of the system and also increase the system’s failure rate.
The building operator is encouraged to review the system’s operations
regularly in order to improve the energy efficiency.
Green Strategies for Office Building
Green Strategies for Office Unit
z
Proper preventive maintenance
of equipment to avoid a loss of
operational efficiency
z
Carry out re-commissioning of
the system regularly or after any
renovation work
z
Clean cooling coils and heat
transfer surfaces regularly
z
Implement ISO 50001
z
Compare the system’s efficiency
with historical data
z
Clean the diffuser of light fittings
regularly
z
Replace/clean blocked air filters
regularly
Office
UNIT
Office
BUILDING
OPERATION AND MANAGEMENT STAGE
4.1.6 Maintain Energy Efficiency
Office
BUILDING
Case study of International
Commerce Centre (ICC)
Application of ISO 50001 Energy Management System
(EMS)
ICC was the first Hong Kong commercial property to obtain
ISO 50001 Energy Management Systems Certification by
the HKQAA in September 2011.
Plan
ICC team received and analysed the building’s energy
performance, defined the major energy sources,
established energy performance objectives and targets,
then formulated a series of action plans in relation to
energy saving opportunities.
Do
ICC implemented energy saving action plans for
Mechanical, Ventilation and Air Conditioning (MVAC),
Electrical Lighting and Lift and Escalator Systems
accordingly.
Check
With regular reviews of the facilities’ operations and close
monitoring of the energy usages via routine checking and
energy performance reviews, the efficiency of the action
plans can be identified.
Act
If the result is unsatisfactory or further areas for
improvement can be spotted, improvement plans are
developed and followed up to ensure the sustainable
enhancement of the energy performance of ICC.
ISO
50001
Plan
Do
Check
Act
Figure 4.1.26 ISO 50001 EMS Model
(Source: Kai Shing Management Services Limited)
MVAC
Electrical
Lighting
Lift &
Escalator
Figure 4.1.27 Main Energy Source
(Source: Kai Shing Management Services Limited)
MVAC System (1
st
Energy Source)
Action Plan 1
Optimise operating
hours of the mechanical
ventilation system to
shorten the operating
hours of the Air-Handling
Unit (AHU) and exhaust
air fans.
Action Plan 2
ICC-Managment Services Office has
worked with a local university to
seek means to improve chiller plant
operation. Various air conditioning
optimisation control strategies have
been implemented, such as:
• Chilled water supply temperature
optimisation
• Cooling tower control strategy
• Design configuration for heat
exchange (HX) with primary pumps
being omitted
Figure 4.1.28 MVAC System
(Source: Kai Shing Management Services Limited)
OPERATION AND MANAGEMENT STAGE
4.1.6 Maintain Energy Efficiency
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