太阳能相变蓄热复合土壤源热泵系统的研究

Solar Phase Change Thermal Storage Composite Study of Ground Source Heat Pump System

叙述了以太阳能相变蓄热装置蓄热,且与蒸发器进口处换热的辅助热泵系统,用20号蓄热专用石蜡,通过板式换热器与蒸发器进水管进行热量传递的实验。指出,利用太阳能集热器在白天升高蒸发器侧的温度提高热泵效率,利用储存在蓄热装置中的热量夜晚可对蒸发器的进水增温,以此实现太阳能相变蓄热装置与复合土壤源热泵系统的良好结合,提高整个系统的供热效率。

Solar energy phase change heat storage composite soil source heat pump system is a kind of takes solar energy and soil as compound the heat source heat pump system of the form.Solar energy heat storage composite phase change of ground-source heat pump system is still in the early stage study,this experiment in the previous experimental basis for system do change,solar phase change storage heat device not only store heat in the day time,but also regenerative heat with evaporator inlet on heat transfer to auxiliary heat pump system.The experiment of Solar heat storage composite phase change ground-source heat pump heating systems use 20 # paraffin as heat storage medium,solar phase heating and heat storage device release heat through plate heat exchanger for heat pump units evaporator feed.Experimental results show that the solar collectors in the daytime can raise the temperature of the evaporator side,so as to improve the efficiency of heat pump.Meanwhile,the daytime stored in heat storage installations in the heat of the evaporator water at night temperature also have an effect,So,the solar energy phase heat storage device can composite ground-source heat pump system in effect so as to improve the whole system of heating efficiency.