Application of air source heat pump assisted solar heating system in building energy saving

In this paper, the optimization and matching of air-source heat pump assisted solar heating system is studied. TRNSYS was used to model the heating system and combined it with the annual energy consumption. The orthogonal optimal matching of three important parameters of the heating system, such as collector area, heat pump power and water storage, are studied respectively. The calculation results show that 442 m² of heat collector, 128.72 kW and 26.4 m³ of water storage tank are the best configurations based on COP value. Taking annual cost as the evaluation index, 345 m² of heat collection area, 62.34 kW of air-cooled heat pump and 23.17 m³ of water storage tank were selected as the best solutions.