基于R1234yf和R134a制冷剂的太阳能-空气源复合热泵性能对比

Performance comparison of solar-air source heat pump based on R1234yf and R134a refrigerant

随着化石能源的过度消耗与环境问题日益加剧,发展清洁可再生能源势在必行。针对太阳能-空气源复合热泵系统性能进行分析,结果表明:模式二时,太阳能热泵系统与空气源热泵系统的COP分别为6.55和4.81;平板式太阳能集热器的热效率高达67.86%;在相同制热功率条件下,与模式一相比,模式二时空气源热泵耗功平均降低87.81%,太阳能热泵耗功平均降低16.17%;采用R1234yf的系统耗功比R134a系统高2%~3.17%,但R1234yf的温室效应值极低。

With the excessive consumption of fossil energy and increasing environmental problems,the development of clean and renewable energy is imperative.The performance of the solar-air source composite heat pump system was analyzed,the results show that:in the model two,the COP of the solar assisted heat pump system and the air source heat pump system was 6.55 and 4.81,respectively;the heat efficiency of the flat plate solar collector is as high as 67.86%in model two.Under the same heating capability condition in the two models,compared with the model one,the average energy consumption of air source heat pump in the model two decreased 87.81%,the average energy consumption of solar heat pump decreased 16.17%;the energy consumption of R1234yf system is 2%to 3.17%higher than that of R134a system,but global warming potential of R1234yf is extremely low.