Design of PV/T solar energy+phase change energy coupled water source heat pump heating and power generation system
The PV/T heating system has instability and intermittency,which is not conducive to stable heating around the clock.In response to the above issues,a PV/T+phase change energy coupled water source heat pump heating and power generation system was adopted in the heating design of a certain dormitory building.During the day,the system uses PV/T panels for power generation and heat extraction.Some of the heat generated enters the water source heat pump unit for heating,while another part enters the heat exchange coil of the energy storage tank for ice melting.At night,the water source heat pump unit absorbs a large amount of latent heat released by the phase change of water ice for heating,solving the problem of solar energy not being able to provide heating 24/7.A portion of the thermal and electrical energy used for heating comes from solar energy,reducing winter heating energy consumption and achieving building energy efficiency.The system generates an annual economic benefit of 138600 yuan,with an annual CO2 reduction of 286.83 tons and an S02 and dust reduction of 2.21 tons.The system has significant economic and environmental benefits.
PV/TWater source heat pump unitWater ice phase transitionBuilding Energy Conservation
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