多孔干渉板により制限された極小間げき内の沸騰熱伝達とその促進

概要

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An experiment on pool boiling on a circular copper surface in water was performed for a case in which the boiling space was restricted by an interference plate with many holes. The space between the heat transfer surface and the interference plate was hermetically sealed at the perimeter to simulate a large surface of heat transfer. Therefore, the vapor and liquid were exchanged through the holes in the interference plate. Many boiling curves were obtained, and appearances were observed for many patterns of holes on the interference plates. The following results were obtained. High heat fluxes were obtained in the narrow space at a small surface superheat of less than 1K. The interference plate of high heat transfer performance was found : it was comparable with other available heat transfer surfaces of high performance. In water, the best performance was given by the interference plate with two types of holes, i. e., 4 mm and 1 mm in diameter, if it was set 0.12 mm above the surface.
社団法人日本機械学会の論文
1989-07-25