回热循环对R507/CO₂复叠式制冷系统的性能影响分析

【摘要】 本文通过理论计算,在给定工况下分析研究了R507/CO₂复叠式制冷系统的性能系数变化情况及回热循环对R507/CO₂复叠式制冷系统的性能影响,它的结论是:在系统的冷凝温度T_k、蒸发温度T_e、传热温差△T确定时,系统的性能系数COP有一个最大的值,相应的有一个最佳的温度T₄;加回热循环后,可提高R507/CO₂复叠式制冷系统的性能系数,从而可以达到节能的目的。更多还原

【Abstract】 This paper studies through theoretical calculation,analysis the coefficient of R507/CO₂ cascade refrigerating system under the same conditions,and how the heat circulation influence on the R507/CO₂ cascade refrigerating system.The conclusion is that when condensing temperature,evaporating temperature and conduct heat temperature is fixed value,the COP of the cascade system has a greatest value,and has a optimum condensing temperature;when add heat circulation to the R507/CO₂ cascade refrigerating system,it can increase the coefficient of R507/CO₂ cascade refrigerating system,and thus it can achieve the goal of energy conservation.更多还原