华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (4): 80-84.

• 动力与电气工程 • 上一篇    下一篇

热泵型空调机组室外机速度场的实验研究

刘金平 叶灿滔 问楠臻   

  1. 华南理工大学 电力学院,广东 广州 510640
  • 收稿日期:2005-02-24 出版日期:2006-04-25 发布日期:2006-04-25
  • 通信作者: 刘金平(1962-),男,博士,副教授,主要从事制冷空调设备的优化设计研究 E-mail:mpjpliu@seut.edu.cn
  • 作者简介:刘金平(1962-),男,博士,副教授,主要从事制冷空调设备的优化设计研究

Experimental Investigation into Velocity Field of Outdoor Unit of Air-Conditioner with Heat Pump

Liu Jin-ping  Ye Can-tao  Wen Nan-zhen   

  1. College of Electric Power,South China Univ.of Te ch.,Guangzhou 510640,Guangdong,China
  • Received:2005-02-24 Online:2006-04-25 Published:2006-04-25
  • Contact: 刘金平(1962-),男,博士,副教授,主要从事制冷空调设备的优化设计研究 E-mail:mpjpliu@seut.edu.cn
  • About author:刘金平(1962-),男,博士,副教授,主要从事制冷空调设备的优化设计研究

摘要: 采用热线风速仪对热泵型空调室外机组空气入口侧的空:气流场进行了测量,结果表明:室外机的风速分布是不均匀的,风速的最大值和最小值相差约4倍.风速不均匀造成了室外机换热效率的降低.计算表明2排管型空调室外机组的性能优于3排管型的,室外机的风量增多23.1% ,制冷工况运行时,冷凝温度降低10.1℃ ,空调机组的性能系数COP升高26.7% ;供热工况运行时,蒸发温度升高5.4℃,供热系数升高15.1% ,且减小了结霜的可能。

关键词: 空气源热泵, 空调机, 室外机, 热线风速仪, 速度场

Abstract:

The air flow at the air inlet of the outdoor unit of an air conditioner with air-source heat pump is mea-sured using a h0t wire anemometer.The results indicate thai:the velocity profile through the heat transfer surface of the outdoor unit is varied:the maximHm velocity is about 4 times the minimum one.The overall heat tra'nsfer coem.cient is thus decreased by the non.uniformity of the velocity.Moreover,the air Iconditioner with a 2-tube-row tvpe
outdoor unit is better than that with a 3-tube-row type outdoor unit.In refrigeration condition,the former possesses an air flowrate increment of 23.1%,a condensing temperature reduction of 10.1℃ and a COP increnient of 26.7%,while in heating condition,the evaporating temperature and the heat pump coeficient res’pe ctively increase by 5.4℃ and 15.1%.and the possibility of frosting is reduced.

Key words: air-source heat pump, air conditioner, outdoor unit, hot wire anemometer, velocitv field