A solar air dual-source heat collecting evaporator (condenser) using a micro heat pipe array and a dual-source direct expansion heat pump system was designed. This system effectively reduces the temperature of the photovoltaic module to improve its power conversion efficiency and simultaneously achieves heating and refrigeration functions. The multiple energy complements each other in such an energy system for building applications. An experimental platform for a solar-air energy direct expansion heat pump system was established and the performance of the power generation

cooling supply

and domestic hot water supply was tested and analyzed. When the heating system in the dual-source direct expansion heat pump system operated

the PV/T assembly had a significant cooling effect on the photovoltaic module. Compared to the rest conditions

the photoelectric power and photoelectric efficiency were improved by 56.43% and 53.15%

respectively. During the heating process

the dual-source direct expansion heat pump heated 180 L water from 20 ℃ to 50 ℃. The average system heating COP

heating power

total power generation

and total power consumption were 4.59

3.20 kW

1.43 kW·h

and 1.36 kW·h

respectively. The average refrigeration EER was 2.29 when cooling from 12 ℃ to 7 ℃.