摘要
研究多孔涂层界面抽吸效应对强化膜状凝结换热的影响。考察了多孔涂层的特性参数对凝液膜厚度和换热系数的影响。与Nusselt理论预示值对照表明,多孔涂层界面抽吸效应是强化膜状凝结换热的重要因素。
Considered the liquid transverse suction effect at the porous layer interface,mathematical models was presented to investigate the influences of the porous layer charac-teristic parameters on condensation heat transfer. The results revealed that the enhancement ratio increased with the increase of the porous layer thickness and permeability. The effectivethermal conductivity of the porous layer was, however, of little significance for condensationheat transfer enhancement. Also, the enhancement mechanism was analyzed by comparisingthe thermal resistances within the external condensate film and the porous layer.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2000年第4期471-474,共4页
Journal of Engineering Thermophysics
基金
中国博士后科学基金!19964
大连理工大学中青年骨干教师培养基金!1999
关键词
强化冷凝传热
多孔涂层
界面抽吸效应
condensation heat transfer enhancement
porous layer
interfacial suction effect