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基于波纹板表面与液膜之间的表面张力作用能减薄液膜厚度而强化传热的机理 ,建立了竖直波纹板表面的凝结过程的数学模型 .计算了波纹板对应于当量平板的凝结传热增强系数 .分析了波纹的主要几何参数如波纹节距、波纹板高度、波纹角、波纹倾斜角、波纹圆角半径等对强化传热的影响效应以指导波纹结构的优化 .提出了一种能兼顾强化传热效果和适当的流动截面积的双尺度波纹 ,其凝结传热系数可比当量平板增强 1～ 2倍
Based on the surface tension between the surface of the corrugated plate and the liquid film, the mechanism of reducing the thickness of the liquid film to enhance the heat transfer is established, and the mathematical model of the condensation process of the vertical corrugated plate surface is established. Heat transfer enhancement coefficient.The influence of the main geometric parameters of corrugation such as corrugation pitch, corrugated plate height, corrugation angle, corrugation angle and corrugation radius on the heat transfer enhancement was analyzed to guide the optimization of corrugated structure. The kind of double-scale corrugation that can take into account the enhancement of heat transfer effect and appropriate flow cross-sectional area can enhance the condensation heat transfer coefficient by 1 to 2 times than that of the equivalent plate