狭い垂直長方形流路内の沸騰熱伝達 : 通過気泡周期と熱伝達率について

概要

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An experimental study has been made of saturated boiling heat transfer for water and R 113 in a narrow vertical rectangular channel (2 mm space, 20 mm wide, and 200 mm long) at atmospheric pressure, in which the vertical heated surface (10 mm long, 20 mm wide) is located on one side at a position 150 mm from the entrance and bubbles are forcibly passed through it at designated period of 0.033 to 1.0 sec. The experiment shows that the heat transfer coefficients are increased by the bubble passing through the heated surface for the value of thermal diffusivity, a, times period, T_0, of the passing bubble above about 6×10^<-9> m^2 (aT_0<6×10^<-9>), while for aT_0<6×10^>-9>m^2, the heat transfer coefficients become independent of the period.
一般社団法人日本機械学会の論文
1987-06-25