Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13752
Title: Experimental study of a novel capacity control algorithm for a multi-evaporator air conditioning system
Authors: Xu, X
Pan, Y
Deng, S 
Xia, L
Chan, M 
Keywords: Air conditioning
Control
Direct expansion
Evaporator
Experimentation
Multizone system
Issue Date: 2013
Publisher: Pergamon Press
Source: Applied thermal engineering, 2013, v. 50, no. 1, p. 975-984 How to cite?
Journal: Applied thermal engineering 
Abstract: The use of a multi-evaporator air conditioning (MEAC) system is advantageous in terms of installation convenience, high design flexibility, being easy to maintain and commission, better indoor thermal comfort control and higher energy efficiency. While MEAC units worth billions of dollars are sold worldwide, the detailed accounts on compressor capacity control and refrigeration flow distribution amongst evaporators remain unavailable in public domain, mainly due to commercial confidentiality. Limited control algorithms for MEAC systems have been developed based on system simulation, and no experimental-based capacity controller developments and their controllability tests may be identified in open literature. In the study reported in this paper, a novel capacity control algorithm, which imitated On-Off control of a single evaporator air conditioning (A/C) system in each indoor unit of a MEAC system by using variable speed compressor and electronic expansion valves (EEVs), was developed. Controllability tests under various settings for experimentally validating the novel capacity control algorithm were carried out and the control algorithm was further improved based on the experimental results.
URI: http://hdl.handle.net/10397/13752
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2012.08.007
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