太阳能辅助二氧化碳热泵热水系统实验研究

利用实验的方法,研究了太阳辐照度、外界气温和风速、初始水温、蒸发器出口温度和压力等对太阳能辅助二氧化碳热泵热水系统运行状况和COP的影响。实验结果表明,系统COP随初始水温的升高而增大;太阳辐照度、外界温度和风速对热泵系统性能的影响主要体现在对系统循环水温的影响;在一定范围内,蒸发压力和蒸发温度越高,热泵系统的COP越大。

Experimental investigation of solar assisted transcritical CO2 heat pump system

Using the experimental methods,the influence of solar irradiance,ambient temperature and wind speed,initial temperature,evaporator outlet temperature and pressure on the operation of the system and COP was investigated.The experimental results showed that,COP increased with the initial water temperature increasing; Effects of solar irradiance,ambient temperature and wind velocity on the performance of heat pump system was mainly reflected in the impact on the system of circulating water temperature; In a certain range,the higher the evaporation pressure and evaporating temperature were,the higher the COP heat pump system was.