Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28867
Title: A new control algorithm for direct expansion air conditioning systems for improved indoor humidity control and energy efficiency
Authors: Xu, X
Deng, S 
Chan, M 
Keywords: Air conditioning
DX
Energy efficiency
High-low speed
Humidity control
Issue Date: 2008
Publisher: Pergamon Press
Source: Energy conversion and management, 2008, v. 49, no. 4, p. 578-586 How to cite?
Journal: Energy conversion and management 
Abstract: This paper presents an experimental study to develop a new control algorithm to replace the traditional on-off control algorithm widely used by direct expansion (DX) air conditioning (A/C) systems, which are widely used in small to medium sized buildings. The new control algorithm, which enables both the compressor and the supply air fan in a DX A/C system to operate at high speeds when the indoor air dry bulb temperature setting is not satisfied and at low speeds otherwise, is termed the H-L control. Extensive experiments have been conducted with an experimental DX A/C system at simulated different climates under both H-L and on-off control. The results suggest that the use of H-L control would result in better control performance in terms of an improved indoor humidity level and a higher energy efficiency of the DX A/C system when compared to the use of the traditional on-off control. The H-L control is also simpler, and its associated hardware cost is much lower than that of the control algorithms based on variable speed technology.
URI: http://hdl.handle.net/10397/28867
ISSN: 0196-8904
EISSN: 1879-2227
DOI: 10.1016/j.enconman.2007.07.040
Appears in Collections:Journal/Magazine Article

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

SCOPUSTM   
Citations

18
Last Week
0
Last month
0
Citations as of Sep 8, 2017

WEB OF SCIENCETM
Citations

15
Last Week
0
Last month
1
Citations as of Sep 14, 2017

Page view(s)

33
Last Week
1
Last month
Checked on Sep 18, 2017

Google ScholarTM

Check

Altmetric



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