PV/T+相变能耦合水源热泵供暖与发电系统设计

Design of PV/T solar energy+phase change energy coupled water source heat pump heating and power generation system

PV/T供暖系统存在不稳定性和间歇性,不利于进行全天候稳定供暖。针对上述问题,在某宿舍楼供暖设计中采用了PV/T+相变能耦合水源热泵供暖与发电系统。系统白天利用PV/T板发电与取热,产生的一部分热量进入水源热泵机组供暖、另一部分热量进入储能水箱的换热盘管融冰,夜间利用水源热泵机组吸收水冰相变释放的大量潜热进行供暖,解决了太阳能不能全天候供暖问题。供暖所用的一部分热能与电能来源于太阳能,降低了冬季供暖能耗,实现了建筑节能。系统每年产生经济效益13.86万元,每年CO_(2)减排量286.83 t,S0_(2)、粉尘减排量2.21 t,系统经济效益和环保效益显著。

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 CO_(2)reduction of 286.83 tons and an S0_(2)and dust reduction of 2.21 tons.The system has significant economic and environmental benefits.