水平円管外面における多量の流下水の挙動

概要

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In dropwise condensation, the behavior of the condensate is one of the important factors influencing the heat transfer. When the condensate is flowing down the condensing surface, it usually displays two significant effects: i. e., sweeping and covering effects. However, it is difficult to clarify the behavior of the condensate in a practical condenser because of the complex phenomenon. Therefore, the behavior of the passing water on wettable and nonwettable tubes was investigated in air. As a result, the passing ratio of a flow rate was obtained for each experimental condition, and it was found that the ratio was affected by the material, the outer diameter and the height of the arranged tube. On the glass tube, the passing ratio decreased gradually as passing flow rate increased/ In the case of the teflon tube, the minimum passing ratio was obtained in a passing flow rate of Q_a: 500≲Q_a≲1000L/mh.
一般社団法人日本機械学会の論文
1992-02-25