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Research on the Heating Performance and Optimization Analysis of Domestic Solar Assisted Heat Pump System in Cold Tibetan Region

ZHANG Heng;LI Ming;LUO Xi;WANG Yun-feng;SUN Kun-ye;ZHUANG Bin-wei;Research Institute of Solar Energy,Yunnan Normal University;School of Physics and Electronic Information,Yunnan Normal University;  
In this paper,we studied and analysed the heating system which used by SAHP,offering both space heating in winter and hot water during the whole year in cold Tibetan region,Shangri-La.The experimental results indicated that compared with the single air source heat pump system,the average daily heat of 21.9 MJ was provided by solar,the annual energy saving of the solar assisted heat pump system was about 87.2%.On the other hand,when the ambient temperature were 7,2and-7℃respectively,the heating capacity of the solar assisted heat pump system were raised about 16.2%,14.1% and 11.5% respectively,meanwhile,about 19.0%,14.1%and 5.5% respectively increase in the coefficient of performance were observed.In conclusion,the feasibility of solar assisted heat pump system for the economic aspect was discussed and the methods to reduce investment and operating costs of the system were also proposed.
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