|
Building Owner
|
Sunny Force Limited
|
Conversion of air-cooled to water-cooled chiller plant
Conversion to variable speed cooling tower fan
Installation of electromagnetic clamp-on / ultrasonic devices for condensing water system
Conversion to variable speed chilled water pump
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation
Renewable energy integrated with roof / green roof
| | Building/Project Name |
Hong Kong Pacific Centre
| | Systems |
HVAC - Waterside Air Conditioning System
Building Automation /Management System
Smart control Platform
Opaque Wall and Roof System
| | Building Types |
Commercial - Office
|
Description of the building:
- Grade A commercial complex with 16 floors of offices and 3 floors of arcade.
- Fully air-conditioned with water-cooled central VSD chilled water system, differential pressure by-pass and VSD pumps & cooling tower fans.
- Fan coil unit for offices and arcade with pre-treated fresh air supply.
- Mainly medical services building.
|
|
  |
Retrofitted initiative:
- Replaced 4 air-cooled chillers by 4 water cooled chillers with variable speed drive (VSD).
- All pumps are fitted with VSD to control the flowrate of the chilled water by differential temperature of chilled water supply and return header and override by pressure differential of the critical circuit point.
- All cooling tower fans are also fitted with VSD to control the approach temperature of condensing water.
- Installed a remote 24-hour monitoring system for condensing water quality.
- Installed electromagnetic water conditioner for condensing water.
- Installed a Central Control & Monitoring System (CCMS) for system monitoring and data logging.
- Installed a PV system of 12.8 kW.
- Conducted retro-commissioning (RCx) of ACMV system under HKGBC "ACT-Shop" programme between 2016 and 2017.
- Installed a chiller plant optimisation system for diagnosis of chiller plant.
Observed benefits other than energy saving:
- Reduced maintenance resources in chiller plant operations and future continuous RCx and balancing.
- More information for chiller plant monitoring and reporting.
General observations of the retrofitting project:
- HVAC system retrofit has not affected the tenants.
- Some advanced technologies, such as CCMS and remote condensing water monitoring system, can be led in a chiller plant retrofit project. This is value-added.
Other information:
| Cost |
Saving |
| Total cost: |
HKD 20 million |
Total savings/year: |
HKD 1,440,000 |
| Savings/year breakdown: |
PV generated : HKD 45,000 |
| Payback: |
6.98 years |
| Name of the consultant and contractor |
Consultant:
ISPL Consulting Limited
Contractor:
Shun Hing E & M Engineering Ltd. |
| Awards |
| Awards received by the project: |
CLP GreenPlus Recognition Award 2016
EMSD Energy Saving Championship 2016
- Hanson Merit Award (Office Building)
- Best Achievement in Energy Saving Award (Cross-Category)
HKGBC Greed Building Award 2016
- Finalist (Existing Buildings Category: Completed Projects Commercial Building)
|
| Subsidy/ Funding |
| The project is supported by: |
CLP Renewable Energy Feed-in Tariff |
| |
|
Conversion of air-cooled to water-cooled chiller plant
Conversion to variable speed cooling tower fan
Installation of electromagnetic clamp-on / ultrasonic devices for condensing water system
Conversion to variable speed chilled water pump
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation
Renewable energy integrated with roof / green roof
|
|
|
Building Owner
|
Sunny Force Limited
| | Building/Project Name |
Hong Kong Pacific Centre
| |
Systems |
HVAC - Waterside Air Conditioning System
Building Automation /Management System
Smart control Platform
Opaque Wall and Roof System
| |
Building Types |
Commercial - Office
|
Description of the building:
|
|
- Grade A commercial complex with 16 floors of offices and 3 floors of arcade.
- Fully air-conditioned with water-cooled central VSD chilled water system, differential pressure by-pass and VSD pumps & cooling tower fans.
- Fan coil unit for offices and arcade with pre-treated fresh air supply.
- Mainly medical services building.
|
|
|
Retrofitted initiative:
- Replaced 4 air-cooled chillers by 4 water cooled chillers with variable speed drive (VSD).
- All pumps are fitted with VSD to control the flowrate of the chilled water by differential temperature of chilled water supply and return header and override by pressure differential of the critical circuit point.
- All cooling tower fans are also fitted with VSD to control the approach temperature of condensing water.
- Installed a remote 24-hour monitoring system for condensing water quality.
- Installed electromagnetic water conditioner for condensing water.
- Installed a Central Control & Monitoring System (CCMS) for system monitoring and data logging.
- Installed a PV system of 12.8 kW.
- Conducted retro-commissioning (RCx) of ACMV system under HKGBC "ACT-Shop" programme between 2016 and 2017.
- Installed a chiller plant optimisation system for diagnosis of chiller plant.
Observed benefits other than energy saving:
- Reduced maintenance resources in chiller plant operations and future continuous RCx and balancing.
- More information for chiller plant monitoring and reporting.
General observations of the retrofitting project:
- HVAC system retrofit has not affected the tenants.
- Some advanced technologies, such as CCMS and remote condensing water monitoring system, can be led in a chiller plant retrofit project. This is value-added.
Other information:
| Cost |
Saving |
| Total cost: |
HKD 20 million |
Total savings/year: |
HKD 1,440,000 |
| Savings/year breakdown: |
PV generated : HKD 45,000 |
| Payback: |
6.98 years |
| Name of the consultant and contractor |
Consultant:
ISPL Consulting Limited
Contractor:
Shun Hing E & M Engineering Ltd. |
| Awards |
| Awards received by the project: |
CLP GreenPlus Recognition Award 2016
EMSD Energy Saving Championship 2016
- Hanson Merit Award (Office Building)
- Best Achievement in Energy Saving Award (Cross-Category)
HKGBC Greed Building Award 2016
- Finalist (Existing Buildings Category: Completed Projects Commercial Building)
|
| Subsidy/ Funding |
| The project is supported by: |
CLP Renewable Energy Feed-in Tariff |
| |
|
Conversion of air-cooled to water-cooled chiller plant
Conversion to variable speed cooling tower fan
Installation of electromagnetic clamp-on / ultrasonic devices for condensing water system
Conversion to variable speed chilled water pump
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation
Renewable energy integrated with roof / green roof
|
|
|
