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Title: NEWater : a case study of its use for cooling process in central air conditioning system of an existing commercial building
Keywords: Building
Issue Date: 7-Oct-2009
Citation: YONG NYOK PIN (2009-10-07T10:14:41Z). NEWater : a case study of its use for cooling process in central air conditioning system of an existing commercial building. ScholarBank@NUS Repository.
Abstract: In the early years, Singapore recognized that it has very limited natural resources of its own. To meet the ever increasing demand for drinking water, various measures have been taken by the national water agency, Public Utilities Board, to increase the water supply. The technological advancement in reverse osmosis and micro-filtration has made it possible for Singapore to produce the high grade reclaimed water from treated used water, known as NEWater. To free up more potable water for drinking purposes, NEWater is being supplied to wafer fabrication plants and to commercial buildings and educational institutions for cooling processes. Unlike new buildings where provisions will be made to install NEWater pipes, existing commercial buildings have to carry out retrofitting works to supply NEWater for nonpotable uses. The purpose of this project is to study the implementation of a NEWater system for an existing commercial building for cooling process in air conditioning systems and to determine the potential savings that can be achieved from the use of this “ultra pure water”. From the data gathered, collated and analysed, it was determined that there are potential savings from using NEWater. Because of the purity of NEWater, lesser water is bled away from cooling towers. This in turn leads to lesser chemicals being wasted, hence a saving in the chemical costs. This project focused on an open water re-circulating cooling process for air conditioning system using NEWater. Future works can look into energy savings from the use of NEWater.
Appears in Collections:Bachelor's Theses

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