|
Building Owner
|
Will Glory Company (C.I.) Limited
|
Replacement of more efficient chiller
Conversion to primary variable flow system
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Replacement of high efficacy lighting source
Provision of Smart Metering
| | Building/Project Name |
Pacific Plaza
| | Systems |
HVAC - Waterside Air Conditioning System
HVAC - Airside Air Conditioning System
Electrical System - Lighting
Electrical System - Electricity Distribution System
Building Automation /Management System
| | Building Types |
Commercial - Office
Commercial - Retail
|
Description of the building:
- Grade A commercial complex with 27 floors of offices, 2 floors of shopping centre, 1 floor of basement
- Fully air-conditioned with air-cooled central chilled water system, deferential pressure by-pass
- Fan-coil unit for offices and shopping centre with pretreated fresh air
- Generator set for fire equipments
- T5 and LED lighting fitting
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Retrofitted initiative:
HVAC- Water-side :
- Replacement of 2 sets of air-cooled reciprocating chillers to 2 sets of air-cooled screw chillers;
- Replacement of 3 sets of chilled water pumps with IE3 motor and installation of variable speed drive to new chilled water pumps;
- Converted the chilled water system to variable flow system. All pumps fitted with variable speed drives and necessary controls to control the flow rate of the chilled water by differential temperature of chilled water supply and return header and override by pressure differential of the critical circuit point;
- 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 for whole building;
Electrical Systems & Smart Control Systems :
- Installed smart metering in power supply system with energy management system for chiller plant;
- Lighting: replace all lighting to LED light in AC control room
Observed benefits other than energy saving:
- Reduced maintenance resources in plant operations and future retro-commissioning and balancing.
- More information for plant monitoring and reporting
- Smoother operation
- Better light equality
- 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 have not affected the tenants.
- Standard retro-fitting initiatives with proven technologies and straight forwrd.
- Lightings for control room are replaced during non office hour which do not affect our daily operation.
Other information:
Chiller Plant
PAU with EC Plug Fan
| Cost |
Saving |
| Total cost: |
HKD 5.23 million |
Total savings/year: |
HKD 584,000 |
| Cost breakdown: |
MVAC / CCMS Works : HKD 4.73 million
Primary Air Handling Unit : HKD 0.50 million |
Savings/year breakdown: |
Chiller Plan / CCMS works : HKD 508,000 (9.3 years)
Primary Air Handling Unit : HKD 76,000 (6.6 years) |
| Payback: |
8.9 years |
| Subsidy/ Funding |
| The project is supported by: |
Smart Power Building Fund |
| |
|
Replacement of more efficient chiller
Conversion to primary variable flow system
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Replacement of high efficacy lighting source
Provision of Smart Metering
|
|
|
Building Owner
|
Will Glory Company (C.I.) Limited
| | Building/Project Name |
Pacific Plaza
| |
Systems |
HVAC - Waterside Air Conditioning System
HVAC - Airside Air Conditioning System
Electrical System - Lighting
Electrical System - Electricity Distribution System
Building Automation /Management System
| |
Building Types |
Commercial - Office
Commercial - Retail
|
Description of the building:
|
|
- Grade A commercial complex with 27 floors of offices, 2 floors of shopping centre, 1 floor of basement
- Fully air-conditioned with air-cooled central chilled water system, deferential pressure by-pass
- Fan-coil unit for offices and shopping centre with pretreated fresh air
- Generator set for fire equipments
- T5 and LED lighting fitting
Retrofitted initiative:
HVAC- Water-side :
- Replacement of 2 sets of air-cooled reciprocating chillers to 2 sets of air-cooled screw chillers;
- Replacement of 3 sets of chilled water pumps with IE3 motor and installation of variable speed drive to new chilled water pumps;
- Converted the chilled water system to variable flow system. All pumps fitted with variable speed drives and necessary controls to control the flow rate of the chilled water by differential temperature of chilled water supply and return header and override by pressure differential of the critical circuit point;
- 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 for whole building;
Electrical Systems & Smart Control Systems :
- Installed smart metering in power supply system with energy management system for chiller plant;
- Lighting: replace all lighting to LED light in AC control room
Observed benefits other than energy saving:
- Reduced maintenance resources in plant operations and future retro-commissioning and balancing.
- More information for plant monitoring and reporting
- Smoother operation
- Better light equality
- 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 have not affected the tenants.
- Standard retro-fitting initiatives with proven technologies and straight forwrd.
- Lightings for control room are replaced during non office hour which do not affect our daily operation.
Other information:
Chiller Plant
PAU with EC Plug Fan
| Cost |
Saving |
| Total cost: |
HKD 5.23 million |
Total savings/year: |
HKD 584,000 |
| Cost breakdown: |
MVAC / CCMS Works : HKD 4.73 million
Primary Air Handling Unit : HKD 0.50 million |
Savings/year breakdown: |
Chiller Plan / CCMS works : HKD 508,000 (9.3 years)
Primary Air Handling Unit : HKD 76,000 (6.6 years) |
| Payback: |
8.9 years |
| Subsidy/ Funding |
| The project is supported by: |
Smart Power Building Fund |
| |
|
Replacement of more efficient chiller
Conversion to primary variable flow system
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Replacement of high efficacy lighting source
Provision of Smart Metering
|
|
|
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