Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28451
Title: Experimental study of the application of intermittently operated SEHRAC (storage-enhanced heat recovery room air-conditioner) inresidential buildings in Hong Kong
Authors: Jia, J
Lee, WL 
Keywords: Capillary tube
Energy performance
Experiment protocol
Heat recovery air-conditioner
Intermittent operation
Prototype design
Issue Date: 2015
Publisher: Pergamon Press
Source: Energy, 2015, v. 83, p. 628-637 How to cite?
Journal: Energy 
Abstract: Effectiveness of SEHRAC (storage-enhanced heat recovery room air-conditioner) for water heating in residential buildings in Hong Kong and elsewhere has been confirmed in previous studies. However, given these studies assumed a theoretical maximum recoverable heat, whether its use is still energy effective in practice, in particular under intermittent operation, is of concern. Intermittent operation of the SEHRAC can lead to significant fluctuations in operating conditions. Adding that capillary tube is often used as the expansion device to magnify the fluctuations, whether SEHRAC can still operate satisfactorily despite the fluctuations is another concern. To address these concerns, a prototype which can be switched between the combined CH (cooling and heating) mode and the CC (conventional cooling) mode was set-up for laboratory experiments. The results showed that the water heating objective can be achieved. The operating parameters also confirmed the satisfactory operation of SEHRAC. Energy performance of the CH mode was found better than the CC mode. A prediction model was developed for evaluating the use of SEHRAC. On wider application of SEHRAC, energy use of the residential sector in Hong Kong can be reduced by 9.1%. The experimental details described in this study would become an experiment protocol to enhance future research in this area.
URI: http://hdl.handle.net/10397/28451
ISSN: 0360-5442
EISSN: 1873-6785
DOI: 10.1016/j.energy.2015.02.075
Appears in Collections:Journal/Magazine Article

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

SCOPUSTM   
Citations

3
Last Week
0
Last month
1
Citations as of Nov 7, 2018

WEB OF SCIENCETM
Citations

2
Last Week
0
Last month
1
Citations as of Nov 9, 2018

Page view(s)

93
Last Week
7
Last month
Citations as of Nov 12, 2018

Google ScholarTM

Check

Altmetric


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