Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43367
Title: A novel capacity controller for a three-evaporator air conditioning (TEAC) system for improved indoor humidity control
Authors: Yan, H
Deng, S 
Chan, MY 
Keywords: Controllability test
Experimental
Humidity control
Novel capacity controller
Three-evaporator air conditioning
Issue Date: 2016
Publisher: Pergamon Press
Source: Applied thermal engineering, 2016, v. 98, p. 1251-1262 How to cite?
Journal: Applied thermal engineering 
Abstract: Using a multi-evaporator air conditioning (MEAC) system to correctly control indoor air temperatures only in a multi-room application is already a challenging and difficult task, let alone the control of both indoor air temperature and humidity. This is because in an MEAC system, a number of indoor units are connected to a common condensing unit. Hence, the interferences among operation parameters of different indoor units would make the desired control of an MEAC system hard to realize. Limited capacity control algorithms for MEAC systems have been developed, with most of them focusing only on the control of indoor air temperature, and no previous studies involving control of indoor air humidity using MEAC systems can be identified. In this paper, the development of a novel capacity controller for a three-evaporator air conditioning (TEAC) system for improved indoor air humidity control is reported. The novel controller was developed by integrating two previous control algorithms for a dual-evaporator air conditioning system for temperature control and for a single-evaporator air conditioning system for improved indoor humidity control. Experimental controllability tests were carried out and the controllability test results showed that, with the novel controller, improved control over indoor humidity levels and better energy efficiency for a TEAC system could be obtained as compared to the traditional On-Off controllers extensively used by MEAC systems.
URI: http://hdl.handle.net/10397/43367
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2016.01.052
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