水平ローフィン付管群の凝縮伝熱性能計算法

概要

論文の詳細を見る
A previously proposed theoretical model of film condensation on a single horizontal low finned tube is extended to the case of a horizontal tube bundle with negligible vapor shear. Based on the flow characteristics of condensate on a vertical column of horizontal low finned tubes, two major flow modes, the column mode and the sheet mode, are considered. It is shown that the present model can predict the heat transfer coefficient satisfactorily for available experimental data including four fluids and five tube columns. Sample calculations show that the effects of the fin spacing and the number of vertical tube rows on the heat transfer performance are significant for R-12 with small values of σ and Δh,while these effects are small for steam with large σ and Δh values.
一般社団法人日本機械学会の論文
1988-08-25