Characteristics of an improved heat-pump cycle for cold regions

被引：66

作者：

Ma, GY ^{[1
]}

Chai, QH

机构：

[1] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China

[2] Tsing Hua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China

来源：

APPLIED ENERGY | 2004年 / 77卷 / 03期

关键词：

heat pump; thermodynamic cycle; cold regions; scroll compressor; economizer;

D O I：

10.1016/S0306-2619(03)00123-5

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：

To increase the heating capacity of air-source heat-pump in cold regions, an improved heat pump cycle with scroll compressor economizer was developed. The measured results of the prototype demonstrate that it can provide a high temperature and high-capacity water supply even under a low ambient temperature of -10 similar to -15 degreesC. The performances of the improved heat-pump cycle are comprehensively analyzed with aid of the proposed thermodynamic model in this paper. The design parameters and the components of the cycle are optimized and the predicted results. The predicted results discussed indicate that the improved heat pump has high efficiency under all weather conditions and that this improvement is conducive to enlarging the running region of the heat pump and providing an alternative heating service for cold regions. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：235 / 247

页数：13