Solar Energy Coupling Integration Of Air Source Heat Pump Hot Water System Of Performance Research

While the shortage of energy sources and the environmental deterioration have become global problems,various fields pay attention to the application of renewable energy.The energy consumption of hot water is an important part of our energy consumptionin residential buildings.With the continuous improvement of living standards,which there was a substantial part of the energy consumption will grow.The solar collector evaporator components of DX-SAHP hot water system natural convection heat transfer with air,it's coefficient is low,and required large heat exchange area.Air source heat pump hot water system(ASHP system)and solar domestic hot water system(SDHW systems)composit solar assisted air source heat pump hot water system,it layout large area and not nimble.To solve the above problems,this paper proposes a solar energy / air source evaporation collector can absorb solar energy and air source at the same time,that part forced convection heat transfer with air,it's coefficient is high,and required small heat exchange area.It build the solar energy/air source integration heat pump(SASIHP),and make up Solar energy coupling integration of air source heat pump hot water system.SASIHP system have the performance advantages of two system,need a small area and less exposed piping,it has a certain practical value and significance to reduce the energy consumption of hot water and promoting building energy efficiency.To test and verify the performance of SASIHP system,establishing SASIHP system,ASHP system,SDHW system TRNSYS simulation platform,about the heating coefficient of performance and power consumption situation under the change of environment and the working condition,in Taiyuan.Simulation results show that,SASIHP system Annual power consumption is 646.09 kWh,70.7% lower than that of the SDHW systems,9.14% lower than that of the ASHP systems.SASIHP system ACOP is 4.12,11.7% higher than that of the ASHP systems.In a typical day on July 22,SASIHP system DCOP is 6.02 and power consumption is 1.16 k Wh,ASHP system DCOP is 4.9 and power consumption is 1.42 kWh under the most favorable conditions.SASIHP system DCOP is 22.9%% higher than that of the ASHP system,and power consumption is 18.31% lower than that of the ASHP system.In a typical easy to frost day on January 6,SASIHP system DCOP is 2.73 and power consumption is 2.55 kWh,ASHP system DCOP is 2.67 and power consumption is 2.62 kWh under the most unfavorable conditions.SASIHP system DCOP is 2.25% higher than that of theASHP system,and power consumption is 2.67% lower than that of the ASHP system,so the energy conservation benefit is remarkable.Build SASIHP system,ASHP system,electricity hot water system in experimental,test them performance of the typical weather conditions in each season in taiyuan region,and verify the correctness of the simulation results.The experimental results show that,SASIHP system power consumption is lower than that of the other two kinds of system.SASIHP system COPH is higher in summer typical days,all above 5.5,above 20% higher than that of ASHP system.SASIHP system COPH is not particularly high in transition season typical days,but all above 4.09,above 12% higher than that of ASHP system.SASIHP system COPH is around 2.9 in winter typical days,above 7%higher than that of ASHP system,besides low temperature and easy frosting condition on January 6,SASIHP system COPH is 2.72,2.25% higher than that of ASHP system.Although some deviation between simulation calculation value and actual test value from the point of comparison results,deviation is within±10%,simulation meet the requirements,and the established mathematical model for the simulation is accurate and reliable.