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《Building Energy Efficiency》 2012-01
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Solar Energy Coupling Air Source Heat Pump System Based on Preheating Cold Air

ZHANG Bing,CAI Jue-xian,ZHOU Wen-he(Institute of Environmental Science and Applied Chemistry,School of Environmental and Municipal Engineering, Lanzhou Jiaotong University,Lanzhou 730070,China)  
For the existence of the frost and liquid hammer of compressor during operating in cold areas with air source heat pump,based on the traditional solar-auxiliary air source heat pump system,the air preheater is fixed before the heat pump evaporator in series.The advantages and disadvantages of the new system and its necessity and feasibility of application in Lanzhou area are expounded in details.The analysis shows that when the outdoor cold air temperature was at the minimum temperature level in winter,it could effectively solve the above difficulty,improve operation stability,with considerable economic effects,thus it solved the problems in winter operating and provided references for popularization of heat pump technology in cold areas.
【CateGory Index】: TU831.3
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