細線フィン群伝熱面の熱伝達および圧力損失特性に対する経験式

概要

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A systematic measurement is conducted for heat transfer and pressure drop performances of the flow through the wire-fin heat exchangers which consist of closely packed thin wire arrays. The nine wire-fin cores which are constructed by systematically varying the transverse and longitudinal fin pitches are tested in the present study. A Modified single-blow transient test method is applied to evaluate the performances. Two distinct heat transfer behaviors are observed in the range of Reynolds number between 20 and 200. They are : (1) steady laminar flow heat transfer and (2) turbulent flow dominated heat transfer. An empirical expression for the critical Reynolds number is presented in terms of the geometrical parameters of the wire arrays. The empirical correlations for the heat transfer performances in the laminar flow region are also pressented as a function of the geometrical parameters as well as the Reynolds number.
一般社団法人日本機械学会の論文
1994-07-25