Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20705
Title: An alternative approach for the performance rating of air-cooled chillers used in air-conditioned buildings
Authors: Yu, FW
Chan, KT 
Keywords: Air-cooled chiller
Ari standard 550/590
Performance rating
Issue Date: 2006
Publisher: Pergamon Press
Source: Building and environment, 2006, v. 41, no. 12, p. 1723-1730 How to cite?
Journal: Building and environment 
Abstract: Air-cooled chillers are widely used to provide cooling energy for air-conditioned buildings at the expense of considerable electricity. The (Air-Conditioning & Refrigeration Institute) ARI standard 550/590 sets out a rating condition to specify the coefficient of performance (COP) of the chillers under part-load conditions. This condition was found to be insufficient to deal with diverse operating conditions under the multiple chiller arrangement. This paper proposes an alternative approach to specifying more precisely the chiller COP under part-load conditions. It is desirable to establish a set of part-load performance curves showing how the chiller COP varies with the condensing temperature at various combinations of chiller loads and outdoor temperatures. The results of this paper will give engineers and researchers a better idea about how to specify the upper limit of condensing temperature for more energy efficient chillers and how chiller COP curves help compare air-cooled chillers for buildings in any climate zone and to estimate the annual electricity consumption of chillers satisfying any given building cooling load profile.
URI: http://hdl.handle.net/10397/20705
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2005.07.014
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