Energy

PolyU supports energy conservation at the highest levels. Innovative energy-saving technologies and combined energy conservation efforts have successfully achieved impressive and lasting conservation results on campus and at student halls.  Campus-wide as well as student-led activities are held to promote and advance energy awareness among students and staff.

 

Energy-Saving Equipment

PolyU employs various types of energy-saving devices and equipment to save energy in buildings. Some examples of the devices and equipment are:

  • Carbon dioxide sensor
  • Dual-technologyoccupancy sensor
  • Energy efficient light fixtures such asT-5 fluorescent tube with conventional ballast
  • Room thermostat with digital display and low temperature limit
  • LED light exit sign
  • High efficiency water-cooled chiller system, evaporative cooling towers and energy recovery ventilation1
  • Electronic Operation and Maintenance (eO&M) System
  • Central Control and Monitoring System (CCMS)2
  • Energy-saving escalator and elevator3
Energy-Saving Equipment

The air-conditioning condensed water will be recycled for A/C make-up water and these installations save a lot more energy and water than that of the conventional air-conditioning system.

Central Control and Monitoring System (CCMS) can control, monitor and manage all the equipment in a same time.

Escalators enter energy saving mode and slow down when no one is using them for a certain period of time. Lighting and ventilation fan inside lift cars will be automatically switched off when they are idled.

 

Energy-saving Design in New Buildings

To achieve energy saving, besides careful consideration of building orientation to reduce solar heat gain, new buildings are equipped with many features such as high efficiency water-cooled chiller system, evaporative cooling towers, heat recovery system, energy efficient light fixtures, occupancy sensors for the control of lighting and air-conditioning, daylight sensors for the control of perimeter lighting near the windows. Besides, lift cars are programmed to automatically switch-off lighting and become idled during off-peak hours.

 

Smartcard-controlled Air Conditioner

 

Smartcard-controlled Air Conditioner

Applying the principle of “User Pays”, hostels in PolyU install smartcard-controlled air conditioner to avoid overusing and raise awareness towards energy saving.

 

 

Renewable Energy Utilization

A solarphotovoltaic system is installed on the roof of Lee Shau Kee Building to generate renewable energy. Solar powered lights are installed on campus which serves as an educational purpose to encourage appreciation and support for the use of renewable energy.

Solarphotovoltaic system on Lee Shau Kee Building

Solarphotovoltaic system on Lee Shau Kee Building

 

 

Solar powered landscape lights on sky garden at Block Z

Solar powered landscape lights on sky garden at Block Z

Solar powered pathway light at jogging trail

Solar powered pathway light at jogging trail

Solar powered pathway light on the lawn

Solar powered pathway light on the lawn

 

PolyU’s Green Energy Technology

With continuously dedicated efforts and tremendous support of the University, PolyU’s research teams have invented ground-breaking innovations which contribute to the sustainable development of the society and the environment. Examples of energy-related innovations Include: 

Environmentally Friendly Electric Vehicles MyCar™ and Smart Cars

Environmentally Friendly Electric Vehicles MyCar™ and Smart Cars

Solar Golf Carts

Solar Golf Carts

Solar Tracking LED Street Light

Solar Tracking LED Street Light

Auto Solar Maximum Power Point Tracking System for Concentrating Photovoltaics (CPV)

Auto Solar Maximum Power Point Tracking System for Concentrating Photovoltaics (CPV)

 

Energy-saving Campaigns

Participation in Energy-saving Campaigns

PolyU actively supports various energy-saving campaigns in Hong Kong to promote a low-carbon lifestyle among staff and students and members of the wider community. For example, PolyU participates in WWF Hong Kong’s Earth Hour since its first launch in 2007 and also supports Hong Kong No Air Con Night since it was launched 2010.

 
 

Energy-saving Competition

Student Halls of Residence run inter-hall energy-saving competitions every year to develop an energy-saving mindset and encourage corresponding actions.

 

Energy-saving Charters

Since 2008, PolyU has signed various types of Charters to show its support and commitment to sustainable practices. Among all, energy-related Charters are in the majority.

Charter on External Lighting

Energy Saving Charter on Indoor Temperature

Energy saving Charter on “No Incandescent Light Bulbs”

 

HK3030 Energy Saving Charter Carbon Reduction Charter  

 

Green Living Logo