中间冷却温差对两级压缩二氧化碳热泵循环性能的影响  

Influence of Intercooling Temperature Difference on Performance of Two-stage Compression CO_2 Heat Pump System

作　　者：马强[1] 范晓伟[1] 张仙平[2] 王凤坤[1] 

机构地区：[1]中原工学院 [2]河南工程学院,郑州450007

出　　处：《中原工学院学报》2010年第2期20-22,27,共4页Journal of Zhongyuan University of Technology

基　　金：河南省科技攻关项目(0524440040)

摘　　要：对两级压缩中间冷却过程对二氧化碳热泵性能的影响进行了热力学分析,讨论了冷却温差对系统制热性能系数和排气温度的影响.在计算参数范围内,随着冷却温差的增加,相比单级压缩循环,两级压缩中间冷却循环制热性能系数的改善小于7.39%,排气温度降低幅度在7~17℃.The contribution of intercooling of CO2 two-stage compression was analyzed in this paper.The influence of intercooling temperature difference on the heating coefficient of performance（COPh） and discharge temperature were discussed.Compared with the single-stage compression cycle,in the range of calculation parameters,the improvement of the COPh of CO2 two-stage compression with intercooling is less than 7.39%.With the increase of intercooling temperature difference,the discharge temperature is declined by 7~17℃.

关 键 词：二氧化碳 跨临界循环 中间冷却温差 

分 类 号：TB61[一般工业技术—制冷工程]