Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (4): 80-84.

• Power & Electrical Engineering • Previous Articles     Next Articles

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

PDF

1053

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