Operation performance of air-source heat pump assisted solar heating system in Beijing rural residence

A rural residence adopts air-source heat pump assisted solar heating system. Tests the heating capacity, energy consumption and other performance parameters of the system in the heating season of 2014 to 2015. The results show that the indoor mean daily temperature is 19.6 ℃，the average COP of air-source heat pump is 4.29, mean daily comprehensive energy efficaiency ratio of heating system is about 3.52, and the mean daily solar energy contribution rate is 4.87%. The heat pump unit of the heating system has good operating performance in winter, but the solar energy contribution rate is low, the whole heating system still needs further optimization.