Performance analysis of a solar-assisted heat pump water heater

被引：134

作者：

Chyng, JP ^{[1
]}

Lee, CP ^{[1
]}

Huang, BJ ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Mech Engn, Taipei 106, Taiwan

来源：

SOLAR ENERGY | 2003年 / 74卷 / 01期

关键词：

The present study was supported by the Energy Commission; Ministry of Economic Affairs; Taiwan;

D O I：

10.1016/S0038-092X(03)00110-5

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A modeling and system simulation of an integral-type solar assisted heat pump water heater (ISAHP) was carried out in the present study. The modeling and simulation assumes a quasi-steady process for all the components in the ISAHP except the storage tank. The simulation results for instantaneous performance agreed very well with experiment. The simulation technique was used to analyze the daily performance of an ISAHP for 1 year. It is shown that the daily total COP (COPo) is around 1.7 to 2.5 year around for the ISAHP, depending on seasons and weather conditions. COPo is higher than 2.0 for most of the time in a year and the daily operating time varies from 4 to 8 h. The online adjustment requirement of the expansion valve was also investigated using the present simulation technique. The analysis shows that the expansion device does not need to be controlled online. Using the 1-year simulation results, a universal daily performance correlation of the ISAHP was derived and shown experimentally to be applicable to another design of ISAHP. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：33 / 44

页数：12

共 7 条

[1] THE PERFORMANCE OF SOLAR WATER HEATERS WITH NATURAL CIRCULATION [J].