|
Building Owner
|
Million Success Limited/ Wide Harvest Investment Limited
|
Conversion to variable speed chilled water pump
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Replacement of high efficacy lighting source
Provision of Smart Metering
Modernisation of lifts and escalators
Application of multi-skin façade system
Renewable energy integrated with roof / green roof
| | Building/Project Name |
China Hong Kong City
| | Systems |
HVAC - Waterside Air Conditioning System
HVAC - Airside Air Conditioning System
Electrical System - Lighting
Electrical System - Electricity Distribution System
Electrical System - Lift and Escalator
Curtain Wall and skylight System
Opaque Wall and Roof System
Building Automation /Management System
| | Building Types |
Commercial - Office
Commercial - Retail
|
Description of the building:
- Grade A Commercial complex with 13 floors of offices, 6 floors shopping centre, 2 floors basement carpark
- Fully air-conditioned with sea water-cooled central chilled water system
- Fan-coil unit for offices and shopping centre with pretreated fresh air
- Generator set lift
- LED, T8 & T5 light tube
Retrofitted initiative:
HVAC- Water-side :
- Installed a variable speed drive to 6 sets of chilled water pumps & 5 sets of sea-water pumps;
- Installed a Central Control & Monitoring System (CCMS) for system monitoring and data logging;
HVAC – Air-side :
- Replacement of centrifugal fan in AHU/ pre-cooling air handling unit (PAU) using electronically commutated (EC) plug fan at Towers and shopping mall;
Electrical Systems :
- Lighting : replaced the common area lighting to LED lighting;
- Lift : modernise the existing Generator set lift to VVVF lift control;
- Renewable energy: install the 474.345 kWp solar panels at roof top in office tower.
- Electricity : Installed smart metering for HV & LV supply system with energy management system for Chiller System
Others :
- Installed the EV chargers at B/F in carpark.
Observed benefits other than energy saving:
- Smoother operation, shorter waiting time for passengers;
- Reduce the heat load of the roof floor after install solar plane;
- More information for plant monitoring and reporting;
- Better light quality; and
- Enables real-time monitoring of power quality of all building services in our buildings, hence aiding the planning and implementation of energy saving initiatives through turning raw measurement data into insightful power quality performance information.
General observations of the retrofitting project:
- HVAC system retro-fit & PV system have not affected the tenants;
- Lift retro-fit requires shut down of lift services one by one. Some disturbance to tenants but manageable;
- Noise complain by tenant during the install of solar plane; and
- Reduce the manpower for replacement of lighting.
Other information:
Central Control & Monitoring System
Chiller Optimization
 Seawater System
 Replacement of PAU
.jpg) Smart Meter for Chiller Plant and HV System
 Lift Moderization
 EV Facilities
 Solar System
| Cost |
Saving |
| Total cost: |
HKD 17.04 million |
Total savings/year: |
HKD 3.33 million |
| Savings/year breakdown: |
Installation of VSD for CHWPs : HKD 350,000 Payback 3.5 years
Install CCMS/iBMS : HKD 650,000 Payback : 1.5 years
HVAC – Air-side : HKD 123,000 Payback : 11.7 years
Lift modernization : HKD104,000 Payback : 14.4 years
Installation of Solar Plane at R/F in office tower : HKD 2.1 million Payback: 5.7 years |
| Cost breakdown: |
Installation of VSD for CHWPs : HKD 1.2 million
Install CCMS/iBMS : HKD 1 million
HVAC - Air-side : HKD 1.44 million
Lift modernization : HKD 1.5 million
Installation Solar Plane at R/F in all office towers: HKD 11.9 million |
Payback: |
5.1 years |
| Subsidy/ Funding |
| The project is supported by: |
CLP Eco Building Fund
CLP Renewable Energy Feed-in Tarif |
| |
|
Conversion to variable speed chilled water pump
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Replacement of high efficacy lighting source
Provision of Smart Metering
Modernisation of lifts and escalators
Application of multi-skin façade system
Renewable energy integrated with roof / green roof
|
|
|
Building Owner
|
Million Success Limited/ Wide Harvest Investment Limited
| | Building/Project Name |
China Hong Kong City
| |
Systems |
HVAC - Waterside Air Conditioning System
HVAC - Airside Air Conditioning System
Electrical System - Lighting
Electrical System - Electricity Distribution System
Electrical System - Lift and Escalator
Curtain Wall and skylight System
Opaque Wall and Roof System
Building Automation /Management System
| |
Building Types |
Commercial - Office
Commercial - Retail
|
Description of the building:
|
|
- Grade A Commercial complex with 13 floors of offices, 6 floors shopping centre, 2 floors basement carpark
- Fully air-conditioned with sea water-cooled central chilled water system
- Fan-coil unit for offices and shopping centre with pretreated fresh air
- Generator set lift
- LED, T8 & T5 light tube
Retrofitted initiative:
HVAC- Water-side :
- Installed a variable speed drive to 6 sets of chilled water pumps & 5 sets of sea-water pumps;
- Installed a Central Control & Monitoring System (CCMS) for system monitoring and data logging;
HVAC – Air-side :
- Replacement of centrifugal fan in AHU/ pre-cooling air handling unit (PAU) using electronically commutated (EC) plug fan at Towers and shopping mall;
Electrical Systems :
- Lighting : replaced the common area lighting to LED lighting;
- Lift : modernise the existing Generator set lift to VVVF lift control;
- Renewable energy: install the 474.345 kWp solar panels at roof top in office tower.
- Electricity : Installed smart metering for HV & LV supply system with energy management system for Chiller System
Others :
- Installed the EV chargers at B/F in carpark.
Observed benefits other than energy saving:
- Smoother operation, shorter waiting time for passengers;
- Reduce the heat load of the roof floor after install solar plane;
- More information for plant monitoring and reporting;
- Better light quality; and
- Enables real-time monitoring of power quality of all building services in our buildings, hence aiding the planning and implementation of energy saving initiatives through turning raw measurement data into insightful power quality performance information.
General observations of the retrofitting project:
- HVAC system retro-fit & PV system have not affected the tenants;
- Lift retro-fit requires shut down of lift services one by one. Some disturbance to tenants but manageable;
- Noise complain by tenant during the install of solar plane; and
- Reduce the manpower for replacement of lighting.
Other information:
Central Control & Monitoring System
Chiller Optimization
Seawater System
Replacement of PAU
Smart Meter for Chiller Plant and HV System
Lift Moderization
EV Facilities
Solar System
| Cost |
Saving |
| Total cost: |
HKD 17.04 million |
Total savings/year: |
HKD 3.33 million |
| Savings/year breakdown: |
Installation of VSD for CHWPs : HKD 350,000 Payback 3.5 years
Install CCMS/iBMS : HKD 650,000 Payback : 1.5 years
HVAC – Air-side : HKD 123,000 Payback : 11.7 years
Lift modernization : HKD104,000 Payback : 14.4 years
Installation of Solar Plane at R/F in office tower : HKD 2.1 million Payback: 5.7 years |
| Cost breakdown: |
Installation of VSD for CHWPs : HKD 1.2 million
Install CCMS/iBMS : HKD 1 million
HVAC - Air-side : HKD 1.44 million
Lift modernization : HKD 1.5 million
Installation Solar Plane at R/F in all office towers: HKD 11.9 million |
Payback: |
5.1 years |
| Subsidy/ Funding |
| The project is supported by: |
CLP Eco Building Fund
CLP Renewable Energy Feed-in Tarif |
| |
|
Conversion to variable speed chilled water pump
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Replacement of high efficacy lighting source
Provision of Smart Metering
Modernisation of lifts and escalators
Application of multi-skin façade system
Renewable energy integrated with roof / green roof
|
|
|
