Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22049
Title: A simulation study on the operating performance of a solar-air source heat pump water heater
Authors: Xu, G
Zhang, X
Deng, S 
Keywords: Energy efficiency
Heat pump
Simulation
Solar energy
Water heater
Issue Date: 2006
Publisher: Pergamon Press
Source: Applied thermal engineering, 2006, v. 26, no. 11-12, p. 1257-1265 How to cite?
Journal: Applied thermal engineering 
Abstract: A simulation study on the operating performance of a new type of solar-air source heat pump water heater (SAS-HPWH) has been presented. The SAS-HPWH used a specially designed flat-plate heat collector/evaporator with spiral-finned tubes to obtain energy from both solar irradiation and ambient air for hot water heating. Using the meteorological data in Nanjing, China, the simulation results based on 150 L water heating capacity showed that such a SAS-HPWH can heat water up to 55 °C efficiently under various weather conditions all year around. In this simulation study, the influences of solar radiation, ambient temperature and compressor capacity on the performance of the SAS-HPWH were analyzed. In order to improve the overall operating performance, the use of a variable-capacity compressor has been proposed.
URI: http://hdl.handle.net/10397/22049
ISSN: 1359-4311
EISSN: 1873-5606
DOI: 10.1016/j.applthermaleng.2005.10.033
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