A new type of photovoltaic/thermal integrated multiple heat source heat pump water heating system is studied. According to different controlling patterns

three operating modes are proposed which combines air source heat pump and PV/T collector based on multi-port tube. The three operating modes are double heat source operating mode

single solar energy operating mode and single air energy operating mode. The performances of system are evaluated experimentally under different operating modes

including water temperature

heating time and coefficient of performance

etc. When 200 L water is heated from 30 ℃ to 55 ℃ at ambient temperature of 28.5 ℃. Experimental results show that the running time of double heat source operation is shorter than that of single air energy operation and single solar energy operation

decreased by 42% and 54%

respectively. The COP increase 32.78% and 47.64%

respectively. At the same time

the system’s thermodynamic and photovoltaic output characteristics for heating 200 L are investigated experimentally from 9:00 to 17:00. Meanwhile

the effect of solar radiation intensity and PV/T collector’s temperature on the photovoltaic/thermal efficiency is discussed. Comparative experimental results show that the photoelectric efficiency of thermoelectric mode is 25.8% higher than that of single photoelectric mode.