太阳能-空气源热泵蒸发器抗结霜特性研究

Research on frost resistance of solar-air source heat pump evaporator

研制一种太阳能-空气源热泵蒸发器,试验对比太阳能-空气源热泵与常规空气源热泵的性能,采用可以直接体现热泵蒸发器除霜能效水平的除霜性能系数进行评价。试验结果显示,太阳能-空气源热泵的逆循环除霜性能系数为0.29,相比常规空气源热泵提高26.1%,这说明太阳能-空气源热泵蒸发器可有效提高热泵除霜能效。

A kind of solar-air source heat pump evaporator is developed. The performance of solar-air source heat pump and the conventional air source heat pump are tested and compared, which is evaluated with coefficient of defrosting performance reflecting the energy efficiency level of defrosting on the evaporator directly. The experimental results state that the reverse-cycle coefficient of defrosting performance of solar-air source heat pump is 0.29, which is higher than that of conventional air source heat pump by 26.1 %. The solar-air source heat pump evaporator improves the defrosting energy efficiency of heat pump effectively.