熱工学コンファレンス講演論文集
Online ISSN : 2424-290X
セッションID: F226
会議情報
F226 非共沸混合冷媒R1234ze(E)/R32の水平平滑管内凝縮伝熱特性の解析(OS-6:次世代ヒートポンプ・冷凍システム(3))
Hasan M.M. AfrozAnowar HossainAkio Miyara
著者情報
会議録・要旨集 フリー

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抄録
Experimental data and mathematical model have been used in the present analysis to understand the condensation characteristics, especially the heat transfer degradation of binary zeotropic mixtures of R1234ze(E) and R32 inside a horizontal smooth tube of which inside diameter is 4.35 mm. The variations of the mass fractions of mixtures R1234ze(E)/R32 are 0.25/0.75, 0.55/0.45, 0.75/0.25 and the variations of mass fluxes of refrigerants are 50〜400kg m^<-2>S^<-1>. The temperatures and concentrations at the bulk and interface regions are obtained to understand the heat transfer degradation due to the mass transfer resistance of both the vapor-side and liquid-side. Considering the heat transfer degradation effect, the experimental local heat transfer coefficients are predicted by the obtained interface temperatures and correlation of pure refrigerant condensation.
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© 2013 一般社団法人 日本機械学会
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