Please use this identifier to cite or link to this item:
Title: Cooling effectiveness of mist precooler for improving energy performance of air-cooled chiller
Authors: Yu, FW
Chan, KT
Yang, J
Sit, RKY
Keywords: Air-cooled chiller
Coefficient of performance
Mist precooling
Issue Date: 2016
Publisher: Vinča Institute of Nuclear Sciences
Source: Thermal science, 2016, v. 2016, p. 1-12 How to cite?
Journal: Thermal science 
Abstract: Mist is increasingly applied to precool outdoor air in heat rejection. This study investigates how the coefficient of performance (COP) of an air-cooled chiller varies with a mist precooler at different levels of cooling effectiveness. A multivariate regression model was developed to simulate the operating variables of an air-cooled chiller with mist precooling. The model was validated with typical performance data of an air-cooled centrifugal chiller. The COP would increase by up to 30%, depending on the cooling effectiveness and the wet bulb depression-the difference between the dry bulb and wet bulb temperatures of outdoor air. At a large wet bulb depression, the percentage increase of COP tended to correlate linearly with the chiller capacity. Yet at a small wet bulb depression, the dynamic control of condensing temperature resulted in a non-linear relationship between the percentage change of COP and the cooling effectiveness. Further experimental work is required to optimize cooling effectiveness for the maximum COP.
EISSN: 0354-9836
DOI: 10.2298/TSCI151112071Y
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Jan 18, 2019

Page view(s)

Last Week
Last month
Citations as of Jan 14, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.