Nanyang Technological University

Existing Buildings

 

Landscapes – landscaping the perimeter, the walkway, open spaces and roofs not only beautify the place, it also blocks off the heat from the sun and provides cool shading facilities.

Sun shades – sun shadings are extensively used for east and west facing facades to shade the building from direct sunlight to minimize solar heat gain.

Double and low-e glazings – these glazings reduce the solar heat gain without compromising on the level of daylight entering the building.

Daylighting – as much as possible, large windows and glass facades are use to provide illumination as an alternative to artificial lighting to reduce lighting load and operation cost.

=Natural Ventilation – natural ventilation is extensively used for courtyards, car parks and corridors etc where requirement of comfort cooling is not crucial to occupant satisfaction to minimize the air conditioning load.

 

 

 

 

 

 

 

 

  

 

Low Envelope Thermal Transfer Value (ETTV) – building envelope design aimed at achieving an adequately insulated building that reduces external heat gain and hence reduces the air conditioning requirement.

Variable Speed Control – variable speed drives are installed to ensure that pumps and fans are performing at maximum efficiency at part load conditions; varying the speed of the equipment allows the efficient use of energy at specific requirement with minimum wastage.

 

 

 

 


 

Condenser Tube Cleaning System – condenser tube cleaning system cleans and scrubs the condenser tube to maintain low approach-temperature; it improves heat transfer and enhances the chiller performances.

High Efficiency Chilled Water Plants – high performance centrifugal chillers are optimized to provide the required cooling load at the required demand. A plant optimization system is used to constantly regulate and tune the air conditioning to operate at optimum efficiency with minimum energy consumption.

Debris Filtration System – filtration system is installed on the chilled water network to remove dirt, rust and debris that may undermine the performance of the chillers.

 

Thermal Storage System – thermal storage tanks are built to store the chilled water whilst using low cost energy tariff to generate the chilled water at night. Thermal storage tanks make use of existing chiller infrastructures that minimize additional operational and capital cost.

Monitoring and Metering – energy used is metered to track the consumptions of the electricity load and the air conditioning cooling load. Energy used is closely monitored to allow improvement and upgrading decision-making.

Heat Recovery Dehumidification System – air is dehumidified through a refrigerant process and is reheated by recovering the heat from the superheated refrigerant gas; this process reduces the need for a electric reheat coil and thus minimize energy use.

Heat Pump System - hot water is generated via a heat pump system and the byproduct of cold air produced is used for cooling purposes. Heat pump has a much higher efficiency than electric heaters.

 

 

 

 

 

 

 

 
  


 

Energy Efficient Lamps and Electronic Ballasts – energy efficient discharge lights or compact fluorescent lamps are used extensively. Some of the light fittings are also installed with electronic ballasts to reduce energy use compared to conventional ballast.

Motioned Sensored Lighting System – most of the toilets are fitted out with motion sensors to detect movement which in turn automatically activates the lighting and power within the toilets; this automation saves the energy when the toilet is not occupied.

Electronic Automated Booking System for facilities – the occupancy of the facilities, e.g. Lecture Theatre, Tutorial Room and Seminar Room are always irregular and depend on demand; the electronic booking system is built in place to synchronize the air conditioning, lighting and access and hence saves energy.

Electronic Air Filtration System – dust and dirt are filtered in the air handling unit through an electronic air filtration system; the system has a dust arrestance efficiency more than 98%; it reduces the fan power required and provide good indoor air quality.

Demand Control Volume – fresh air into the building is regulated by the carbon dioxide sensor that measure the concentration of the carbon dioxide within the air conditioned space. This reduces energy consumed to cool excess fresh air than required.

Recycle Bin – the university has put in place recycle bins throughout the university. The wastes collected are recycled by the recycling companies.

 NTU@One North


 

 


The building has been conferred as a water efficient building by PUB on 16 Jan 2008.  

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