冷冻消融预冷系统热力学分析

发布时间：2018-04-01 09:42

本文选题：冷冻消融　切入点：?分析　出处：《上海理工大学学报》2017年05期

【摘要】：将单级蒸气压缩式制冷系统作为冷冻消融设备的预冷系统,利用热力学第一定律、第二定律对其建立数学模型,进行能量分析和?分析.研究了R134a,R22,R404a这3种制冷剂在不同蒸发温度和冷凝温度下循环性能系数、总损失、总效率的变化,以及系统中各部件的?损失、?损失占比和?效率.结果表明,在所选工况范围内,R22的性能系数、总?损失、总?效率均优于R134a和R404a,但与R134a相比无显著差异.计算结果表明,系统中压缩机、冷凝器、毛细管是循环总?损失的主要来源,而回热器及蒸发器的损失较少,分析了其原因,并提出了改进建议.
[Abstract]:The single stage vapor compression refrigeration system is used as the precooling system of the cryoablation equipment. The first and second laws of thermodynamics are used to establish the mathematical model of the refrigeration system, and the energy analysis and energy analysis are carried out.AnalysisThe cyclic performance coefficient, total loss, total efficiency of three refrigerants, R134aH, R22, R404a, and the components of the system are studied at different evaporation and condensation temperatures.Loss?Share of loss and loss?Efficiency.The results show that the performance coefficient of R22 is total?Loss, total?The efficiency was better than that of R134a and R404a, but there was no significant difference between R134a and R134a.The results show that the compressor, condenser and capillary in the system are the total circulation?The main source of loss, while the loss of regenerator and evaporator is less, the reasons are analyzed, and suggestions for improvement are put forward.
【作者单位】：上海理工大学能源与动力工程学院;上海理工大学医疗器械与食品学院;
【基金】：浦东新区科技发展基金资助项目(PKJ2014-S16)
【分类号】：TB657

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