Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74690
Title: Inherent operational characteristics aided fuzzy logic controller for a variable speed direct expansion air conditioning system for simultaneous indoor air temperature and humidity control
Authors: Yan, H
Xia, Y
Xu, X
Deng, S 
Keywords: Direct expansion air conditioning
Fuzzy logic control
Humidity control
Inherent operational characteristics
Issue Date: 2018
Publisher: Elsevier
Source: Energy and buildings, 2018, v. 158, p. 558-568 How to cite?
Journal: Energy and buildings 
Abstract: In small to medium sized buildings, direct expansion (DX) A/C systems are extensively used. Multi-variable controllers (MVCs) have been developed for variable speed (VS) DX A/C systems to control indoor air temperature and humidity simultaneously. Based on the previous extensive research work on the inherent operational characteristics of DX A/C systems, an alternative simpler approach was applied, by developing a fuzzy logic controller (FLC) for simultaneous indoor air temperature and humidity control, using a VS DX A/C system. In this paper, the developments of the FLC are presented. Firstly, a detailed description of the algorithm for the FLC is given. This is followed by detailing an experimental VS DX A/C system where the FLC was tested. Finally, the results of controllability tests for the FLC are reported. Controllability tests results demonstrated that the FLC developed can achieve the simultaneous control over indoor air temperature and humidity, with a reasonable control accuracy and sensitivity.
URI: http://hdl.handle.net/10397/74690
ISSN: 0378-7788
EISSN: 1872-6178
DOI: 10.1016/j.enbuild.2017.10.013
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