水-エタノール2成分混合蒸気の凝縮熱伝達特性曲線の測定

概要

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Measurement of condensation characteristic curves, which show the relation between the heat flux/heat transfer coefficient and the surface subcooling over a wide range of a subcooling, was performed for various vapor concentrations and mass velocities of binary mixture of steam and ethanol. The curves divided into several characteristic domains in consequence of the variations of the modes of condensate occurring due to the distribution of the surface tension based upon the concentration distribution on the condensate surface. In the order of surface subcooling, vapor-side dominated region, region of steep increase of heat transfer, transition region and region of ordinary film condensation were observed. It was also shown that the heat flux and the heat transfer coefficient were independent of the position on the heat transfer surface in the steep increase region. In contrast, relatively strong dependency appeared in the transition region.
社団法人日本機械学会の論文
1995-03-25