期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 31, 期 7, 页码 1282-1292出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2008.01.006
关键词
Heat pump; Air-source; Compression system; Two-stage system; R410A; Design; Experiment
资金
- Electro Industries, Inc. from Monticello, MN
Air-source heat pumps for residential heating are more widely used than geothermal heat pumps mainly due to their lower installation costs. Major disadvantages of air-source heat pumps are the decrease of heat output and coefficient of performance (COP), and increase in discharge temperature, towards low outdoor temperatures. In this paper an air-source two-stage heat pump using R410A as the refrigerant was simulated, designed, constructed, and tested at ambient temperatures as low as -30 degrees C and supply temperatures of up to 50 degrees C in air and water heating mode. In addition, the system is able to provide sufficient air conditioning in cooling mode (approximately 5G-60% of the design heat transfer rate in heating mode). A short summary of an extended literature review is shown as well as a theoretical screening study of the three most promising cycles. Furthermore, the design and test results of a breadboard system and a comparison with commercially available heat pumps are presented. Second law efficiencies of up to 45% could be achieved, resulting in a coefficient of performance (COP) of 2.1 at -30 degrees C ambient temperature. (C) 2008 Elsevier Ltd and IIR. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据