不可逆四热源制冷机的有限时间热力学分析  

Finite-time Thermodynamic Analysis of an Irreversible Four-heat-source Refrigerator

作　　者：马迎秋 李忠建[2] 

机构地区：[1]上海燃气工程设计研究有限公司 [2]哈尔滨工业大学市政环境工程学院

出　　处：《建筑热能通风空调》2008年第5期32-34,共3页Building Energy & Environment

摘　　要：四热源制冷机是吸收式制冷机的热力学抽象,是一类重要的制冷机。基于利用有限时间热力学理论所推导的不可逆四热源制冷机的最大制冷量及相应性能系数的一般表达式,对其中的参数进行了数值研究。研究结果表明,高温热源温度和内不可逆性因子是影响最大制冷量及其相应性能系数的关键参数。Absorption refrigerators are an important generic refrigerator, and they are often treated as irreversible four-heat-source refrigerators in thermodynamic field. On the basis of the Maximum Cooling Rate （MCR） and its corresponding Coefficient of Performance （COP） of an irreversible four-heat-source refrigerator derived using finite-time thermodynamic approach, a detailed parametric study is carried out. The results show that both the temperature of the high-temperature heat source and the internal irreversibility factors have greater effects on the MCR and its corresponding COP than any other parameters.

关 键 词：不可逆四热源制冷机 有限时间热力学 最大制冷量 性能系数 数值研究 

分 类 号：TB651[一般工业技术—制冷工程] TK1[动力工程及工程热物理—热能工程]