Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22995
Title: Life cycle analysis of enhanced condenser features for air-cooled chillers serving air-conditioned buildings
Authors: Yu, FW
Chan, KT 
Issue Date: 2006
Source: Building and environment, 2006, v. 41, no. 8, p. 981-991
Abstract: Air-cooled chillers are commonly used to provide cooling energy for air-conditioned buildings at the expense of considerable electricity. This paper examines the life cycle electricity cost of these chillers with the 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 in various operating conditions. It is estimated that the life cycle electricity cost savings range from HK$ 2,099,742 with EC to HK$ 6,399,564 with all the three features, with regard to a chiller plant serving an office building for 15 yr. The life cycle analysis reported here provides important insights into how to reap the benefits of energy efficient technologies for air-cooled chillers.
Keywords: Air-cooled chiller
Condensing temperature control
Evaporative pre-coolers
Life cycle analysis
Variable speed condenser fans
Publisher: Pergamon Press
Journal: Building and environment 
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2005.04.018
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