Dropwise Condensation Heat Transfer of Steam on a Polytethefluoroethylene Film

被引：0

作者：

Ma XuehuTao BaiChen JiabinXu DunqiLin Jifang Institute of Chemical Engineering Dalian University of Technology Dalian China ^{[116012
]}

机构：

来源：

JournalofThermalScience | 2001年 / 03期

关键词：

dropwise condensation; polymer film; steam temperature effect; temperature fluctuation;

D O I：

暂无

中图分类号：

TK124 [传热学];

学科分类号：

080701 ;

摘要：

Excellent dropwise condensation of steam was observed on a polytethefluoroethylene (PTFE) coated plate. The experimental results indicated that the condensation heat transfer performance was increased by 30 to 47 times when compared with film condensation values at the same surface subcooling degrees. The random fluctuation of the surface temperature was resulted from the high thermal conductivity of the copper substrate and the ultra thin coated polymer film with lower surface free energy. The effect of the steam temperature for pressures near atmospheric pressure on the dropwise condensation heat transfer characteristics was investigated as well.

引用

页码：247 / 253

页数：7

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