多孔干渉板を用いた沸騰熱伝達の促進とその機構(熱工学,内燃機関,動力など)

概要

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An experiment on pool boiling in methanol was performed for a case in which the boiling space was controlled by an interference plate with many holes. The narrow space, 0.12mm in thickness, between the heat transfer surface and the interference plate was hermetically sealed at the perimeter. Therefore, the vapor and liquid were only exchanged through the holes in the interference plate. Degree of super heat at onset of boiling was 0.7K wihout overshoot at 10mm in plate thickness, 1mm in diameter of holes and 3.85mm in pitch of holes. In this case of interference parameter, the critical heat flux was obtained the same value without interference plate. Interference plate was disturbed free convection and superheat layer was provided under small heat flux on the heat transfer surface. And the critical bubble diameter for the onset of boiling was decreased as the temperature of the superheat layer was increased. For this reason, the degree of superheat of onset of boiling was decreased.
社団法人日本機械学会の論文
2004-02-25