西南交通大学学报2012，Vol.47Issue(4)：634-638,5.DOI:10.3969/j.issn.0258-2724.2012.04.016
回热器对跨临界CO2热泵系统性能的影响
Effects of Internal Heat Exchanger on Performance of Transcritical CO2 Heat Pump System
摘要
Abstract
The performance of a transcritical C02 heat pump system applied for hot water supply was experimentally investigated under various refrigerant charging conditions to clarify the effects of the heat transfer area of an internal heat exchanger (IHX) on the system performance. Experiments were conducted in the condition of constant heating capacity and evaporator outlet superheat by adjusting the compressor frequency and the opening of electronic expansion valve. Experimental results show that, at the optimum refrigerant charge, the compression ratio decreases while the discharge and suction temperatures increase with an increase in the IHX heat transfer area. Adopting an IHX can increase the maximum heating COP (coefficient of performance), and an improvement of about 3.2%- 5.1% is obtained by using an IHX with a dimensionless heat transfer area of 0.2.关键词
CO2/热泵/回热器/性能Key words
CO2/ heat pump/ internal heat exchanger/ performance分类
通用工业技术引用本文复制引用
金东旭,王平,小山繁,高田信夫..回热器对跨临界CO2热泵系统性能的影响[J].西南交通大学学报,2012,47(4):634-638,5.基金项目
教育部留学回国人员科研启动基金资助项目(教外司留[2008]890号) （教外司留[2008]890号）
日本新能源产业技术综合开发机构(NEDO)项目(P05029)的资助. （NEDO）
