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Prediction Method of In-tube Condensation of Multi-component Vapor Mixture

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概要 This paper deals with a prediction method for the condensation of multi-component refrigerant mixture inside a horizontal smooth tube. Based on some reliable assumptions, the governing equations for t...he local heat and mass transfer characteristics are derived, and the prediction calculation for the condensation of ternary zeotropic refrigerant mixtures composed of HFC32/HFC125/HFC134a, including R407C, is carried out; the local values of vapor quality, thermodynamic states at bulk vapor, vapor-liquid interface and bulk liquid, mass flux etc. are obtained for a constant wall temperature and a constant wall heat flux conditions. The effects of the composition of HFC32/HFC125/HFC134a on the heat transfer characteristics are clarified, and the heat transfer characteristics of R407C are compared with those of R22.続きを見る

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登録日 2009.04.22
更新日 2017.06.07