本文選題：冷凍消融　切入點：?分析　出處：《上海理工大學學報》2017年05期

【摘要】：將單級蒸氣壓縮式制冷系統(tǒng)作為冷凍消融設(shè)備的預冷系統(tǒng),利用熱力學第一定律、第二定律對其建立數(shù)學模型,進行能量分析和?分析.研究了R134a,R22,R404a這3種制冷劑在不同蒸發(fā)溫度和冷凝溫度下循環(huán)性能系數(shù)、總損失、總效率的變化,以及系統(tǒng)中各部件的?損失、?損失占比和?效率.結(jié)果表明,在所選工況范圍內(nèi),R22的性能系數(shù)、總?損失、總?效率均優(yōu)于R134a和R404a,但與R134a相比無顯著差異.計算結(jié)果表明,系統(tǒng)中壓縮機、冷凝器、毛細管是循環(huán)總?損失的主要來源,而回熱器及蒸發(fā)器的損失較少,分析了其原因,并提出了改進建議.
[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.
【作者單位】： 上海理工大學能源與動力工程學院;上海理工大學醫(yī)療器械與食品學院;
【基金】：浦東新區(qū)科技發(fā)展基金資助項目(PKJ2014-S16)
【分類號】：TB657

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