Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/10413
Title: Electricity end-use characteristics of air-cooled chillers in hotels in Hong Kong
Authors: Yu, FW
Chan, KT 
Keywords: Air-cooled chillers
Electricity consumption
Hotels
Operating efficiency
Issue Date: 2005
Publisher: Pergamon Press
Source: Building and environment, 2005, v. 40, no. 1, p. 143-151 How to cite?
Journal: Building and environment 
Abstract: This paper presents the operating efficiency of air-cooled chillers in three existing hotels and investigates the extent to which the annual electricity consumption can decrease by improving their efficiency. Chillers in these hotels tend to be improperly staged, causing their seasonal efficiency to rise by 0.05-0.12 kW/kW from a full load efficiency of 0.32 kW/kW. When chiller sequencing is restored, their seasonal efficiency could be enhanced to 0.34 kW/kW, which corresponds to an 8.8-22.7% drop in their annual electricity consumption. It is possible to further decrease the annual electricity consumption by 27.0-38.6% when the chillers operate under floating condensing temperature control instead of head pressure control. The implications of improved chiller efficiency for reducing the electricity demand of hotels are discussed.
URI: http://hdl.handle.net/10397/10413
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2004.05.009
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