密閉形二相サーモサイフォンの熱輸送特性に及ぼす加熱面粗さの効果

概要

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Experiments were conducted to investigate the effect of heating surface configuration on the heat transport characteristics of closed two-phase thermosyphons by using four kinds of heating surface : smoth, artificially roughened and two grooved surfaces. The working fluids tested were water, methanol and refrigerant R113. The results show that making the heating surface rough is effective in improving both the heat transport efficiency and the performance limit compared with the smooth heating surface. Cutting longitudinal grooves on the heating surface is also effective in improving the heat transport efficiency since the area of the heating surface is increased. However, the heat transfer rate is not always increased at the performance limit by cutting the grooves. The rewetting of the heating surface with a falling liquid film was also examined.
社団法人日本機械学会の論文
1992-04-25