Evaluating the energy performance of high temperature differential chiller

Pao Yue-kong Library Electronic Theses Database

Evaluating the energy performance of high temperature differential chiller

 

Author: Lo, Siu-on
Title: Evaluating the energy performance of high temperature differential chiller
Degree: M.Eng.
Year: 2010
Subject: Hong Kong Polytechnic University -- Dissertations
Air conditioning -- Energy consumption
Temperature measurements
Department: Dept. of Building Services Engineering
Pages: [ix], 70 leaves : ill. ; 31 cm.
InnoPac Record: http://library.polyu.edu.hk/record=b2356378
URI: http://theses.lib.polyu.edu.hk/handle/200/5751
Abstract: Nowadays people spend more time to stay in the building, it consumes more energy for the air-conditioning system. It is a great potential to saving energy of the air-conditioning system since the energy consumption of the air conditioning system consumption half of the building energy. This study proposes a high temperature differential chiller system to provide air-conditioning in a building. It increases the temperature different of the chilled water supply and return temperature from 5°C to 9°C. The Primary Air handle unit (PAU) treats all the latent and part of sensible load of the building while the dry fan coil unit handles the sensible load from the room only. It can prevent the condensation occur in the room, it can provide a better indoor air quality. To evaluate the energy performance of the high temperature differential chiller system, simulation software energyplus is employed in this study. It can simulate the energy performance of the system, and investigate the room condition at the same time. Compared with conventional system, the energy saving of the high temperature differential chiller system can reach 9%, and it can provide a more comfortable and health environment to the occupants.

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