下向き水平凝縮面の伝熱促進に関する研究

概要

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Experiments were performed to study the effects of surface geometry and porous drainage strip on the condensation heat transfer performance of downward facing submerged and vapor space condensers to be used for immersion cooling modules. A smooth surface and two finned surfaces with and without the porous drainage strip were tested for condensation of R-113 and methanol. For the submerged condensers, formation of vapor space under the condensing surface was observed in the low heat flux regime, whereas the surface was covered with rising bubbles in the high heat flux regime. For both the submerged and vapor space condensers, significant heat transfer enhancement over the smooth surface value was provided by the finned surfaces. For the vapor space condensers, further heat transfer enhancement was provided by use of the porous drainage strip.
1989-09-30