Effect of load pattern on solar-boosted heat pump water heater performance

被引：33

作者：

Anderson, T. N. ^{[1
]}

Morrison, G. L. ^{[1
]}

机构：

[1] Univ New S Wales, Sch Mech & Mfg Engn, Sydney, NSW 2052, Australia

来源：

SOLAR ENERGY | 2007年 / 81卷 / 11期

关键词：

heat pump; water heater;

D O I：

10.1016/j.solener.2007.01.018

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：

The performance of a solar-boosted heat pump water heater (HPWH) operating under full load and part load conditions was determined in an outdoor experimental study. The system utilised flat unglazed aluminium solar evaporator panels to absorb solar and ambient energy. Absorbed energy was transferred to the water tank by means of the heat pump and a wrap around condenser coil on the outside of the tank. The system COP was found to be in the range of 5-7 under clear daytime conditions and 3-5 under clear night-time conditions. Using part load testing of the HPWH system it was found that concentrating the coils in the lower portion of the tank could increase the efficiency of the condenser coil. It was also shown that there exists a generalised linear relationship that can be used to describe the system COP in terms of the temperature difference between the water in the storage tank and the ambient air. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1386 / 1395

页数：10