R410A双级压缩热泵空调器的特性分析  

Analysis on Characteristics of Two-stage Compression Heat Pump Air-conditioner with R410A

作　　者：张华[1] 徐世林[1] 

机构地区：[1]上海理工大学制冷技术研究所,上海200093

出　　处：《制冷学报》2008年第6期21-24,29,共5页Journal of Refrigeration

摘　　要：针对空调器在夏季环境温度高,冬季环境温度低时制冷能力和制热能力不足的问题,提出采用双级压缩制冷循环的方案提高系统制冷量、制热量和制冷COP、制热COP。选择制冷剂R410A,双级循环为一级节流中间不完全冷却的方式进行比较和分析,计算得到单级和双级压缩制冷循环的性能参数变化特征;并说明了该循环最佳中间温度和单机两级压缩机配比的合理选择。In our study, a two-stage compression refrigeration cycle was adopted in heat pump conditioners to enhance their cooling and heating capacities and COPs. The cycle applied one-stage throttling and intermediate incomplete cooling, and R410A was used as the refrigerant. The performance of the one-stage compression refrigeration cycle and the two-stage compression refrigeration cycle was calculated respectively and compared. The optimal intermediate temperature and flowrate ratio of the single compressor with two-stage compression were presented.

关 键 词：市政工程 双级压缩 中间温度 空调器 R410A 

分 类 号：TM925.1[电气工程—电力电子与电力传动] TU831.7[建筑科学—供热、供燃气、通风及空调工程]