Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33584
Title: Developing a new frosting map to guide defrosting control for air-source heat pump units
Authors: Zhu, JH
Sun, YY
Wang, W
Deng, SM 
Ge, YJ
Li, LT
Keywords: Air-source heat pump
Defrosting interval
Field test
Frosting map
Mal-defrost
Issue Date: 2015
Publisher: Pergamon Press
Source: Applied thermal engineering, 2015, v. 90, p. 782-791 How to cite?
Journal: Applied thermal engineering 
Abstract: The development of a new frosting map for air-source heat pumps (ASHPs) based on a temperature-humidity chart is reported in this paper. Through a parametric analysis, two boundary lines (a condensing line and a frosting line) were obtained, dividing the map into three regions: a non-frosting region, a condensing region and a frosting region. Using the simulation results from a generalized numerical model of frost growth, the frosting region was further divided into three indicative zones representing different frosting levels: a severe frosting zone, a moderate frosting zone (I, II) and a mild frosting zone (I, II). Lab and field tests were conducted in order to verify the correctness of the zoning and to obtain indicative defrosting intervals for ASHPs operated at different zones. Based on the test results and using the developed map, reference defrosting intervals were suggested for different frosting zones, and they can be used in conjunction with a conventional defrosting control method to avoid potential mal-defrosting.
URI: http://hdl.handle.net/10397/33584
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2015.06.076
Appears in Collections:Journal/Magazine Article

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

SCOPUSTM   
Citations

5
Last Week
0
Last month
0
Citations as of Aug 14, 2017

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
0
Citations as of Aug 15, 2017

Page view(s)

35
Last Week
4
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



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