Prospect analysis of applying mixed heat pump system in the Sanbei regions

There is a strong application demand of air-source heat pump in the Sanbei regions of China, but the traditional air-source heat pump is quite difficult to be used in certain climate conditions of these areas. The authors once invented a kind of mixed heat pump system made up of air-to-water heat pumps and water-to-water heat pumps, and also did some research by experiment. We first studied the system's heating energy efficiency ratio (R_EE) and switch qualifications by analyzing experimental results. Then via BIN weather parameters and temperature frequency method, we simulated and calculated the system's heating season performance factors (F_HSP) of nine cities chosen from the Sanbei regions respectively. We then analyzed the systems application prospect and popularity value.