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R22, R410A 및 R407C의 수평관내 응축열전달특성 예측모델
권정태(J. T. Kwon),박해암(H. A. Park),김동욱(D. X. Jin),안예찬(Y. C. Ahn),김무환(M. H. Kim) 대한기계학회 2001 대한기계학회 춘추학술대회 Vol.2001 No.9
In the present study, two prediction models for condensation heat transfer of R22, R410A and R407C inside a horizontal smooth tube are presented. One is for pure refrigerant or azeotropic mixtures, the other for nonazeotropic mixtures. The first model mainly focus on the flow and heat transfer characteristics of the condensate liquid film. The second model considers both vapor and liquid phase mass transfer resistances as well as the interaction effect of mass transfer between components The prediction calculation was carried out for R22 and R410A by the first model, and for R407C by the second model. The local condensation heat transfer coefficients were obtained and analysed.