EXPERIMENTS ON FILM CONDENSATION PROMOTION WITHIN THIN INCLINED POROUS COATINGS

被引：14
作者：
RENKEN, KJ
ABOYE, M
机构：
[1] Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 1993年 / 36卷 / 05期
关键词：
D O I：
10.1016/S0017-9310(05)80102-4
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This paper presents the results of an experimental investigation of condensation within thin inclined porous coatings. The porous substrate system consisted of a condensate region overlaying a thin, metallic, and permeable coating which was adhered to an isothermal copper block. Reduced gravity measurements were obtained by condensing saturated steam containing small concentrations of non-condensables at atmospheric pressure on surfaces with effective body forces between 0.3 and 1 g. The effects of surface subcooling and porous coating thickness were also investigated. The heat transfer data shows substantial enhancement when compared to a noncoated surface and Nusselt's correlation. A theoretical model based on porous/fluid composite condensation is also evaluated.
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页码：1347 / 1355
页数：9
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