CIESC Journal ›› 2013, Vol. 64 ›› Issue (10): 3599-3605.DOI: 10.3969/j.issn.0438-1157.2013.10.015

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Performance characteristics of two-stage compression heat pump system coupled with dual-cylinder rolling piston compressor

LIU Qi, MA Guoyuan, XU Shuxue   

  1. School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
  • Received:2013-02-22 Revised:2013-06-18 Online:2013-10-05 Published:2013-10-05
  • Supported by:

    supported by the National Natural Science Founding of China(51076003).

单机双级滚动活塞压缩机热泵系统的性能特性

刘琦, 马国远, 许树学   

  1. 北京工业大学环境与能源工程学院, 北京 100124
  • 通讯作者: 许树学
  • 作者简介:刘琦(1988-),女,硕士研究生。
  • 基金资助:

    国家自然科学基金项目(51076003)

Abstract: When the two-stage compression cycle coupled with dual-cylinder rolling piston compressor is used in the room air conditioner with the refrigerant of R410A,its heating/cooling capacity can be remarkably improved and the discharge temperature can be reduced.By analyzing thermodynamically the two-stage compression heat pump system coupled with dual-cylinder rolling piston compressor,simulated calculation indicated that the favorable volume ratio of higher-pressure chamber to lower pressure one was 4/5.The experiments for the developed prototype were conducted.The experimental results showed that the coefficient of performance(COP)for cooling conditions could go up to 3.81 and discharge temperature was lower than 91℃ when evaporating temperature kept 5℃ and condensing temperature varied from 35℃ to 45℃,and COP for heating conditions could rise up to 3.38 and discharge temperature was lower than 111℃ when condensing temperature was 40℃ and evaporating temperature varied from -5℃ to -10℃.COP could be improved by 6.8%—15.4% when compared with one-stage compression cycle.

Key words: rolling piston compressor, R410A, two-stage compression, volume ratio, coefficient of performance

摘要: 将R410A为工质的单机双级滚动活塞压缩机闪发器系统用于房间空调器,能有效地降低排气温度、提升制冷/制热能力,具有显著的节能效果。通过对单机双级滚动活塞压缩机闪发器热泵系统的分析计算,得出压缩机适宜的高低压腔容积比为4/5。对研制出的样机进行了实验研究,结果表明,在蒸发温度为5℃,冷凝温度为35~45℃的工况下,制冷COPr最高可达3.81,排气温度低于91℃;蒸发温度为-5~-10℃,冷凝温度为40℃时,制热COPh最高可达3.38,排气温度低于111℃。

关键词: 滚动活塞压缩机, R410A, 单机双级压缩, 容积比, 性能系数

CLC Number: