CO_2制冷系统的最优高压压力研究  

Research on the optimum high pressure of CO_2 refrigeration system

作　　者：管海清[1] 马一太[1] 马利蓉[1] 

机构地区：[1]天津大学

出　　处：《制冷与空调》2006年第1期17-20,共4页Refrigeration and Air-Conditioning

摘　　要：运用热力学模型分析气体冷却器出口温度、蒸发温度、压缩机效率、过热度和膨胀机效率等参数对最优高压压力的影响。结果表明,气体冷却器出口温度、过热度和膨胀机效率对最优高压压力的影响较为明显。最后还对几种关于CO2循环最优高压压力的关联式进行对比分析。A simple thermodynamic model is adopted to analyse the impact of such cycle parameters of the system as discharge temperature of gas cooler, evaporating temperature, efficiency of compressor and expander and degree of superheat on the optimum high pressure. It is illustrated that discharge temperature of gas cooler, efficiency of expander and degree of superheat at the inlet of compressor can exert more influence on the optimum high pressure. The simple comparison of several CO2 optimum high pressure correlations is presented at last.

关 键 词：CO2跨临界循环 最优高压压力 

分 类 号：TB657[一般工业技术—制冷工程]