水平伝熱面における核沸騰に及ぼす水位の影響 : 低水位の場合

概要

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No experimental data have been known quantatively concerning the effect of the low water level on the coefficient of heat transfer of boiling α. In preceding experiments we carried out, the normal water level was between 6 and 8 cm., and in the present experiment it is lowered from 6 to 0.5 cm., A heating surface which is made of a brass plate has diameter of 10 cm., Heat flux was changed from 8750 to 21800 kcal/m^2h. The conclusions are summarized as follows : (1) There is a notable difference between the temperature distribution corresponding to the level higher than 4 cm. and that lower than 3 cm., (2) It was found that the number of vapor columns on a surface n and α remained unchanged to a certain point, and then they increased slightly with the decrease in depth. (3) Being independ of the water level, every datum could be arranged on only one curve when we take a coordinate of α vs. n.
一般社団法人日本機械学会の論文
1952-12-05