带膨胀机的CO_2跨(超)临界逆循环的热力学分析  

THERMODYNAMIC ANALYSIS ON CO2 TRANSCRTICALCYCLE WITH EXPANDER

作　　者：马一太[1] 王侃宏[1] 杨昭[1] 吕灿仁[1] 

机构地区：[1]天津大学热能研究所,天津300072

出　　处：《工程热物理学报》1999年第6期661-665,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金;天津市自然科学基金

摘　　要：ＣＯ２是一种安全可靠的自然工质，可望在空调和热泵系统中得到应用。根据热力学第二定律，本文提出比较各类循环的统一方法一当量温度法。本文对带膨胀机的ＣＯ２跨临界循环及其系统进行分析和研究。结果显示该循环具有较高的用能效率，在技术上是可行的．CO2 is a safe natural refrigerant which had been and will be used in air conditioning andheat pump systems. This paper, according to the second law of therwodynamics, put forwarda new concept 'Equivalent Temperature' in comparing CO2 cycle with other transcriticalrefrigerants. In addition, CO2 transcritical cycle and its system with expander have beenanalysed and probed. The results show that CO2 transcritical cycle with expander has highenergy efficiency and could be realised in technology.

关 键 词：跨临界循环 热泵 膨胀机 二氧化碳 工质 

分 类 号：TB611[一般工业技术—制冷工程]