RETROFITTING SHOWCASES

The showcases presented here are those shared by the case study contributor and their project team. HKGBC staff have scrutinised the findings and asked for follow-up where necessary to ensure the accuracy of the details provided.

You may specify the showcases you want to see by selecting the filters: (Note: For the three filters, if you do not specify, then it means ALL)
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  • Commercial - Office
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  • Others - Carpark    
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Select Systems
  • MEP System (MEPS)
  • HVAC - Waterside Air Conditioning System
  • HVAC - Airside Air Conditioning System
  • HVAC - Heating System
  • HVAC - Carpark Mechanical Ventilation System
  • HVAC - Data Centre/Server Room
  • HVAC - external pipework and ductwork
  • Electrical System - Lighting
  • Electrical System - Electricity Distribution System
  • Electrical System - Lift and Escalator
  • Plumbing & Drainage System
  • Commercial Appliances - Green Commercial Kitchen
  • Commercial Appliances - Server Room / Data Centre
  • Central Control and Monitoring System (CCMS)
  • Building Automation /Management System
  • Smart control Platform
  • Building Envelope (BE)
  • Curtain Wall and skylight System
  • Opaque Wall and Roof System
  • Passive System
Building Owner PCCW-HKT Telephone Limited
Conversion of constant-air-volume (CAV) to variable-air-volume (VAV) system
Conversion to radiant cooling technologies (e.g. chilled beam / chilled ceiling) with dedicated air handling system (DAHS)
Enlargement of fresh air inlet and ductwork for free cooling application with low ambient temperature and relative humidity
Building/Project Name Ngau Tau Kok Engineering Centre
Systems HVAC - Airside Air Conditioning System
Building Automation /Management System
Building Types Commercial - Office
Commercial - Data Centre / Server Room
Description of the building:

  • A 10-storey building with offices, a 24 hours call centre and canteen.
  • Fully air-conditioned with water cooled central chilled water system & constant speed pumps.
  • Water cooled central chiller water system controlled by Building Monitoring System round the clock.
  • Air Handling Unit and Fan Coil Unit for offices, call centre and canteen with pre-treated fresh air.


Conversion of constant-air-volume (CAV) to variable-air-volume (VAV) system
Conversion to radiant cooling technologies (e.g. chilled beam / chilled ceiling) with dedicated air handling system (DAHS)
Enlargement of fresh air inlet and ductwork for free cooling application with low ambient temperature and relative humidity
Building Owner PCCW-HKT Telephone Limited
Building/Project Name Ngau Tau Kok Engineering Centre
Systems HVAC - Airside Air Conditioning System
Building Automation /Management System
Building Types Commercial - Office
Commercial - Data Centre / Server Room
Description of the building:

  • A 10-storey building with offices, a 24 hours call centre and canteen.
  • Fully air-conditioned with water cooled central chilled water system & constant speed pumps.
  • Water cooled central chiller water system controlled by Building Monitoring System round the clock.
  • Air Handling Unit and Fan Coil Unit for offices, call centre and canteen with pre-treated fresh air.


Conversion of constant-air-volume (CAV) to variable-air-volume (VAV) system
Conversion to radiant cooling technologies (e.g. chilled beam / chilled ceiling) with dedicated air handling system (DAHS)
Enlargement of fresh air inlet and ductwork for free cooling application with low ambient temperature and relative humidity

Building Owner PCCW-HKT Telephone Limited
Installation of occupancy/motion sensor for on/off/dimming control of lighting
Replacement of high efficacy lighting source
Building/Project Name East Exchange Tower
Systems Electrical System - Lighting
Building Types Commercial - Office
Others - Carpark    
Description of the building:

  • A 24-storey building with offices, exchanges and a carpark.
  • The 2-storey carpark located in basement equipped with 16 parking space.


Installation of occupancy/motion sensor for on/off/dimming control of lighting
Replacement of high efficacy lighting source
Building Owner PCCW-HKT Telephone Limited
Building/Project Name East Exchange Tower
Systems Electrical System - Lighting
Building Types Commercial - Office
Others - Carpark    
Description of the building:

  • A 24-storey building with offices, exchanges and a carpark.
  • The 2-storey carpark located in basement equipped with 16 parking space.


Installation of occupancy/motion sensor for on/off/dimming control of lighting
Replacement of high efficacy lighting source

Building Owner PCCW-HKT Telephone Limited
Replacement of more energy efficient uninterrupted power system (UPS)
Building/Project Name Yuen Chau Kok Exchange
Systems Commercial Appliances - Server Room / Data Centre
Building Types Commercial - Data Centre / Server Room
Description of the building:

  • A 9-storey building with offices, datacentres, telephone exchange areas and a canteen.
  • IT loads are served by Uninterruptible Power Supply (UPS) System.


Replacement of more energy efficient uninterrupted power system (UPS)
Building Owner PCCW-HKT Telephone Limited
Building/Project Name Yuen Chau Kok Exchange
Systems Commercial Appliances - Server Room / Data Centre
Building Types Commercial - Data Centre / Server Room
Description of the building:

  • A 9-storey building with offices, datacentres, telephone exchange areas and a canteen.
  • IT loads are served by Uninterruptible Power Supply (UPS) System.


Replacement of more energy efficient uninterrupted power system (UPS)

Building Owner Hongkong Land Limited
Conversion of air-cooled to water-cooled chiller plant
Conversion to variable speed chilled water pump
Building/Project Name Chater House
Systems HVAC - Waterside Air Conditioning System
Building Automation /Management System
Building Types Commercial - Office
Description of the building:

  • Chater House is at the hub of Hongkong Land's portfolio in Central, with telecommunications, electrical and mechanical features designed for the specific needs of investment banking and financial services.
  • One of the four iconic buildings under LANDMARK, representing the epitome of top-tier luxury shopping and lifestyle experiences.


Conversion of air-cooled to water-cooled chiller plant
Conversion to variable speed chilled water pump
Building Owner Hongkong Land Limited
Building/Project Name Chater House
Systems HVAC - Waterside Air Conditioning System
Building Automation /Management System
Building Types Commercial - Office
Description of the building:

  • Chater House is at the hub of Hongkong Land's portfolio in Central, with telecommunications, electrical and mechanical features designed for the specific needs of investment banking and financial services.
  • One of the four iconic buildings under LANDMARK, representing the epitome of top-tier luxury shopping and lifestyle experiences.


Conversion of air-cooled to water-cooled chiller plant
Conversion to variable speed chilled water pump

Building Owner Hongkong Land Limited
Replacement of more efficient chiller
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation
Building/Project Name Exchange Square
Systems HVAC - Waterside Air Conditioning System
Building Automation /Management System
Smart control Platform
Building Types Commercial - Office
Description of the building:

  • Grade A Commercial Buildings for a prestigious, globally oriented, 24-hour business complex.
  • 52 levels for One Exchange Square and 51 levels for Two Exchange Square comprising of offices, retail, and F&B outlets.
  • Fully air-conditioned with direct sea water-cooled central chilled water system with primary and secondary chilled water pumping system.
  • Air handling unit (AHU) and Fan-coil units (FCU) for offices, retail, and F&B outlets with pre-treated fresh air.


Replacement of more efficient chiller
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation
Building Owner Hongkong Land Limited
Building/Project Name Exchange Square
Systems HVAC - Waterside Air Conditioning System
Building Automation /Management System
Smart control Platform
Building Types Commercial - Office
Description of the building:

  • Grade A Commercial Buildings for a prestigious, globally oriented, 24-hour business complex.
  • 52 levels for One Exchange Square and 51 levels for Two Exchange Square comprising of offices, retail, and F&B outlets.
  • Fully air-conditioned with direct sea water-cooled central chilled water system with primary and secondary chilled water pumping system.
  • Air handling unit (AHU) and Fan-coil units (FCU) for offices, retail, and F&B outlets with pre-treated fresh air.


Replacement of more efficient chiller
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation

Building Owner Hongkong Land Limited
Supply and return chilled water temperature differential control with zone control valve
Conversion to demand fresh air control system coupling with exhaust air system
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Building/Project Name One & Two Exchange Square
Systems HVAC - Waterside Air Conditioning System
HVAC - Airside Air Conditioning System
Building Automation /Management System
Building Types Commercial - Office
Description of the building:

  • Grade A Commercial Buildings for a prestigious, globally oriented, 24-hour business complex.
  • 52 levels for One Exchange Square and 51 levels for Two Exchange Square comprising of offices, retail, and F&B outlets.
  • Fully air-conditioned with water-cooled central chilled water system and primary and secondary chilled water pumping system.
  • Air handling unit (AHU) and Fan-coil units (FCU) for offices, retail, and F&B outlets with pre-treated fresh air.


Supply and return chilled water temperature differential control with zone control valve
Conversion to demand fresh air control system coupling with exhaust air system
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Building Owner Hongkong Land Limited
Building/Project Name One & Two Exchange Square
Systems HVAC - Waterside Air Conditioning System
HVAC - Airside Air Conditioning System
Building Automation /Management System
Building Types Commercial - Office
Description of the building:

  • Grade A Commercial Buildings for a prestigious, globally oriented, 24-hour business complex.
  • 52 levels for One Exchange Square and 51 levels for Two Exchange Square comprising of offices, retail, and F&B outlets.
  • Fully air-conditioned with water-cooled central chilled water system and primary and secondary chilled water pumping system.
  • Air handling unit (AHU) and Fan-coil units (FCU) for offices, retail, and F&B outlets with pre-treated fresh air.


Supply and return chilled water temperature differential control with zone control valve
Conversion to demand fresh air control system coupling with exhaust air system
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC

Building Owner Housing Authority
Installation of indirect evaporative cooling System (IEC) for pre-cooling of primary fresh air with exhaust air
Building/Project Name A wet market at Ying Tung Estate in Tung Chung
Systems HVAC - Airside Air Conditioning System
Building Types Others - other building types
Description of the building:

  • A wet market with a total floor area of 260 m2 for this experimental study.
  • An all-fresh-air air-conditioning system.
  • The cool exhaust air from the air-conditioned space cannot be reused, but exhausted through this IEC system.
  • Two air handling units (AHUs) were installed for the wet trade area and each one is responsible for half of the area.
  • Two rotating heat recovery wheel systems (HRW) are installed before each AHU to pre-cooling/pre-heating fresh air by recovering cold/heat from exhaust air in summer/winter.


Installation of indirect evaporative cooling System (IEC) for pre-cooling of primary fresh air with exhaust air
Building Owner Housing Authority
Building/Project Name A wet market at Ying Tung Estate in Tung Chung
Systems HVAC - Airside Air Conditioning System
Building Types Others - other building types
Description of the building:

  • A wet market with a total floor area of 260 m2 for this experimental study.
  • An all-fresh-air air-conditioning system.
  • The cool exhaust air from the air-conditioned space cannot be reused, but exhausted through this IEC system.
  • Two air handling units (AHUs) were installed for the wet trade area and each one is responsible for half of the area.
  • Two rotating heat recovery wheel systems (HRW) are installed before each AHU to pre-cooling/pre-heating fresh air by recovering cold/heat from exhaust air in summer/winter.


Installation of indirect evaporative cooling System (IEC) for pre-cooling of primary fresh air with exhaust air

Building Owner Swire Properties Limited
Conversion to primary variable flow system
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation
Building/Project Name Cityplaza Mall
Systems HVAC - Waterside Air Conditioning System
Smart control Platform
Building Types Commercial - Retail
Description of the building:

  • Cityplaza is the largest shopping mall on Hong Kong Island which operating since 1983, with approximately 1.11 million ft2 floor area managed by Cityplaza Management Office (CPMO) of Swire Properties Management Limited (SPML).
  • Separate chiller plant serves the north and south wing of Cityplaza, with a central indirect seawater heat rejection system.
  


Conversion to primary variable flow system
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation
Building Owner Swire Properties Limited
Building/Project Name Cityplaza Mall
Systems HVAC - Waterside Air Conditioning System
Smart control Platform
Building Types Commercial - Retail
Description of the building:

  • Cityplaza is the largest shopping mall on Hong Kong Island which operating since 1983, with approximately 1.11 million ft2 floor area managed by Cityplaza Management Office (CPMO) of Swire Properties Management Limited (SPML).
  • Separate chiller plant serves the north and south wing of Cityplaza, with a central indirect seawater heat rejection system.
  


Conversion to primary variable flow system
Installation of smart energy management platform for data collection and visualisation, performance monitoring and evaluation, demand control and efficiency optimisation

Building Owner Swire Properties Limited
Installation of auto-cleaning devices for condensers of water-cooled chillers
Building/Project Name Devon House
Systems HVAC - Waterside Air Conditioning System
Building Types Commercial - Office
Description of the building:

  • A 29-storey Grade-A office building with 4 basements floors.
  • Served by 4 nos. of water-cooled chillers with VSD.
  


Installation of auto-cleaning devices for condensers of water-cooled chillers
Building Owner Swire Properties Limited
Building/Project Name Devon House
Systems HVAC - Waterside Air Conditioning System
Building Types Commercial - Office
Description of the building:

  • A 29-storey Grade-A office building with 4 basements floors.
  • Served by 4 nos. of water-cooled chillers with VSD.
  


Installation of auto-cleaning devices for condensers of water-cooled chillers

Building Owner Swire Properties Limited
Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Building/Project Name Two Pacific Place
Systems HVAC - Airside Air Conditioning System
Building Types Commercial - Office
Commercial - Retail
Description of the building:

  • A 27-storey Grade-A office building.
  • A central direct seawater-cooled system serving office, mall and hotels.
  • Each typical office floor is served by two air handling units (AHUs) with pre-treated fresh air.
  


Using electronically commutated (EC) plug fan in AHU / PAU / CRAC
Building Owner Swire Properties Limited
Building/Project Name Two Pacific Place
Systems HVAC - Airside Air Conditioning System
Building Types Commercial - Office
Commercial - Retail
Description of the building:

  • A 27-storey Grade-A office building.
  • A central direct seawater-cooled system serving office, mall and hotels.
  • Each typical office floor is served by two air handling units (AHUs) with pre-treated fresh air.
  


Using electronically commutated (EC) plug fan in AHU / PAU / CRAC

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