狭い垂直長方形流路内を通過する気泡による熱伝達の促進 : 気泡長さと流路すき間幅の影響について

概要

論文の詳細を見る
An experimental study has been made of the saturated boiling heat transfer for water and R 113 in a narrow vertical rectangular channel (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 for a designated period of 0.033 to 1.0 sec. The clearance of the channel can be changed from s=2 mm to s=7 mm, and thus the size of the bubble can be controlled independently of the clearance to be equal to 30, 20, and 10 mm in length. The experiment shows that the length of the passing bubble significantly enhances the heat transfer and the clearance has a weak effect on its enhancement when a bubble of the same length passes through it.
一般社団法人日本機械学会の論文
1988-11-25