Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/29560
Title: Economic benefits of improved condenser features for air-cooled chillers serving an air-conditioned hotel
Authors: Yu, FW
Chan, KT 
Keywords: Air-cooled chiller
Condensing temperature control
Economic analysis
Evaporative pre-coolers
Variable speed condenser fans
Issue Date: 2006
Publisher: Pergamon Press
Source: Applied thermal engineering, 2006, v. 26, no. 10, p. 1063-1073 How to cite?
Journal: Applied thermal engineering 
Abstract: Air-cooled chillers can take up around one-fourth of the total electricity consumption of an air-conditioned building. This paper evaluates the potential electricity cost savings of these chillers with improved condenser features of condensing temperature control (CTC), evaporative pre-coolers (EC) and variable speed condenser fans (VSF). A validated model for an air-cooled screw chiller was used to ascertain how the individual and mixed features influence the annual electricity consumption of chillers operating for the cooling load profile of a hotel. With regard to a chiller plant with a 15-year lifespan, the life cycle electricity cost savings are estimated at between HK$ 2,291,247 and 8,320,732, depending on the features used. The simple payback of the features could range from 1.07 to 3.32 years. These findings show how chiller manufacturers and building owners can profit from implementing energy efficient technologies for air-cooled chillers.
URI: http://hdl.handle.net/10397/29560
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2005.06.019
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