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.
  


Retrofitted initiative:
  • Modification of HVAC Chilled Water System:

    Modified chilled water system from existing constant primary and variable secondary to variable primary system. Use of existing primary chilled water pump sets were suspended and new bypassing primary loop system completed in early Feb 2021. The related performances are continuously monitored by the Cloud-Based Smart Energy Management Platform (CBSEMP).
  • Cloud-Based Smart Energy Management Platform (CBSEMP):

    A centralized cloud platform, namely the Cloud-Based Smart Energy Management Platform (CBSEMP) to collect, analyze, and visualize real-time energy and operation data. It enables real-time data collection, big data analytics based on artificial intelligence rule-based expert system and machine learning to identifies and alerts on energy saving opportunities and predictive maintenance.


Observed benefits other than energy saving:
  • Modification of HVAC Chilled Water System

    Reduced maintenance resources in plant operations and future retro-commissioning and balancing.
  • Cloud-Based Smart Energy Management Platform (CBSEMP)

    Providing real-time monitoring and analysis of energy and BMS operation data, identifying energy saving opportunities and maintenance insights through a customizable and flexible cloud platform.
  • Smart Diagnosis
    AI Rule-Based Expert System identifies and alerts on energy saving opportunities and predictive maintenance.
  • Data Analysis
    Enable your engineers to select any data to directly monitor and analyze online. Freely share charts created with others.
  • Dashboards
    In-depth understanding of energy performance and associated energy cost performance. Breaking down to individual buildings.
  • Alert and Monitoring
    Let your engineers receive alert on their phone to follow up with identified opportunities. Monitor performance after rectification.
  • Automatic Reporting
    Reporting for energy performance target tracking (for management and technical team) and operation performance tracking (for technical team).
  


General observations of the retrofitting project:
  • Night work for HVAC system retro-fit did not affect the tenants and systems.


Other information:
  • Schematic Diagram of Chilled Water System Before and After Modification
    (Before modification)
    Schematic Diagram of Previous Chilled Water System
    		 (After modification)
  • Chiller Plant Plan After Modification
    Cloud-Based Smart Energy Management Platform (CBSEMP) to continuously monitoring of WTF over the period
  • Cloud-Based Smart Energy Management Platform (CBSEMP) 
    Providing real-time monitoring and analysis of energy and BMS operation data across different portfolio types (office and retail) in different regions (Hong Kong and Chinese Mainland), identifying energy saving opportunities and maintenance insights through a customizable and flexible cloud platform.

Cost Saving
Total cost: Modification of HVAC Chilled Water System
HKD 362,700

Cloud-Based Smart Energy Management Platform (CBSEMP)
HKD 1,300,000		 Total savings/year: Modification of HVAC Chilled Water System
HKD 177,200

Cloud-Based Smart Energy Management Platform (CBSEMP)
HKD 565,200
Payback: Modification of HVAC Chilled Water System
2.0 years

Cloud-Based Smart Energy Management Platform (CBSEMP)
2.3 years


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.
  
Retrofitted initiative:

  • Modification of HVAC Chilled Water System:

    Modified chilled water system from existing constant primary and variable secondary to variable primary system. Use of existing primary chilled water pump sets were suspended and new bypassing primary loop system completed in early Feb 2021. The related performances are continuously monitored by the Cloud-Based Smart Energy Management Platform (CBSEMP).
  • Cloud-Based Smart Energy Management Platform (CBSEMP):

    A centralized cloud platform, namely the Cloud-Based Smart Energy Management Platform (CBSEMP) to collect, analyze, and visualize real-time energy and operation data. It enables real-time data collection, big data analytics based on artificial intelligence rule-based expert system and machine learning to identifies and alerts on energy saving opportunities and predictive maintenance.

Observed benefits other than energy saving:

  • Modification of HVAC Chilled Water System

    Reduced maintenance resources in plant operations and future retro-commissioning and balancing.
  • Cloud-Based Smart Energy Management Platform (CBSEMP)

    Providing real-time monitoring and analysis of energy and BMS operation data, identifying energy saving opportunities and maintenance insights through a customizable and flexible cloud platform.
  • Smart Diagnosis
    AI Rule-Based Expert System identifies and alerts on energy saving opportunities and predictive maintenance.
  • Data Analysis
    Enable your engineers to select any data to directly monitor and analyze online. Freely share charts created with others.
  • Dashboards
    In-depth understanding of energy performance and associated energy cost performance. Breaking down to individual buildings.
  • Alert and Monitoring
    Let your engineers receive alert on their phone to follow up with identified opportunities. Monitor performance after rectification.
  • Automatic Reporting
    Reporting for energy performance target tracking (for management and technical team) and operation performance tracking (for technical team).
  

General observations of the retrofitting project:

  • Night work for HVAC system retro-fit did not affect the tenants and systems.

Other information:

  • Schematic Diagram of Chilled Water System Before and After Modification
    (Before modification)
    Schematic Diagram of Previous Chilled Water System
    		 (After modification)
  • Chiller Plant Plan After Modification
    Cloud-Based Smart Energy Management Platform (CBSEMP) to continuously monitoring of WTF over the period
  • Cloud-Based Smart Energy Management Platform (CBSEMP) 
    Providing real-time monitoring and analysis of energy and BMS operation data across different portfolio types (office and retail) in different regions (Hong Kong and Chinese Mainland), identifying energy saving opportunities and maintenance insights through a customizable and flexible cloud platform.

Cost Saving
Total cost: Modification of HVAC Chilled Water System
HKD 362,700

Cloud-Based Smart Energy Management Platform (CBSEMP)
HKD 1,300,000		 Total savings/year: Modification of HVAC Chilled Water System
HKD 177,200

Cloud-Based Smart Energy Management Platform (CBSEMP)
HKD 565,200
Payback: Modification of HVAC Chilled Water System
2.0 years

Cloud-Based Smart Energy Management Platform (CBSEMP)
2.3 years


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

   


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