Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31865
Title: Applying condensing-temperature control in air-cooled reciprocating water chillers for energy efficiency
Authors: Chan, KT 
Yu, FW
Keywords: Air-cooled chillers
Condensing temperature control
Energy efficiency
Head pressure control
Issue Date: 2002
Publisher: Pergamon Press
Source: Applied energy, 2002, v. 72, no. 3-4, p. 565-581 How to cite?
Journal: Applied energy 
Abstract: This paper reports on the modelling and findings of the energy performance of an air-cooled reciprocating multiple-chiller plant under the conventional head pressure control and the new condensing-temperature control in a subtropical climate. The simulation model was validated using the operating data of an existing chiller plant. As noted from this existing air-cooled reciprocating chiller plant, there was a substantial efficiency drop at part-load resulting from the head pressure control. If operating at variable lower condensing-temperatures based on the established operating mode of the condenser fans and compressors, it is shown that the chiller consumption can be maintained below 2 kW/refrigeration ton throughout the entire range of outdoor temperature and part-load conditions, giving an average efficiency of 1.08 kW/refrigeration ton. The energy imposition due to cycling on more condenser fans can be compensated by the reduced compressor consumption. Potential energy savings of 18.2 and 29% in the annual chiller consumption are achievable by applying the condensing-temperature control to two existing chiller plants studied. This supports the need to develop the condensing-temperature control as an improvement to the conventional head pressure control.
URI: http://hdl.handle.net/10397/31865
ISSN: 0306-2619
EISSN: 1872-9118
DOI: 10.1016/S0306-2619(02)00053-3
Appears in Collections:Journal/Magazine Article

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

SCOPUSTM   
Citations

52
Last Week
0
Last month
0
Citations as of Sep 24, 2017

WEB OF SCIENCETM
Citations

49
Last Week
0
Last month
0
Citations as of Sep 23, 2017

Page view(s)

63
Last Week
6
Last month
Checked on Sep 24, 2017

Google ScholarTM

Check

Altmetric



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