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首页> 外文期刊>International Journal of Heat and Mass Transfer >Enhancement of condensation heat transfer with patterned surfaces
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Enhancement of condensation heat transfer with patterned surfaces

机译：增强带图案表面的冷凝热传递

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摘要

An experimental study of condensation heat transfer on surfaces with patterns of distinct hydrophilic and hydrophobic regions has been carried out. The patterned surfaces of 25.4 mm diameter comprised of 25% hydrophilic region and 75% hydrophobic region by area. Experiments were performed on surfaces with several feature sizes and shapes of the patterns. The feature sizes varied from 0.25 mm to 1.50 mm. Two types of pattern shapes were studied: circular hydrophilic regions on an otherwise hydrophobic surface (island-patterns), and hydrophilic region resembling a tree on a background of hydrophobic region (tree-pattern). Depending on the type of pattern on the condensation surface, the heat transfer coefficients were either higher or lower than that of the completely hydrophobic surface. For the range of inlet vapor velocities (about 0.05 m/s to 5 m/s), among all the surfaces, the highest heat transfer coefficient was observed for the patterned surface with the feature size of 0.25 mm, which was higher than that of a completely hydrophobic surface.
机译：已经进行了具有不同亲水和疏水区域图案的表面上的冷凝热传递的实验研究。直径为25.4 mm的图案化表面包含25％的亲水区域和75％的疏水区域。在具有多个特征尺寸和图案形状的表面上进行了实验。特征尺寸从0.25毫米到1.50毫米不等。研究了两种类型的图案形状：在其他疏水表面上的圆形亲水区域（岛状图案）和在疏水区域背景下类似于树的亲水区域（树图案）。根据冷凝表面上图案的类型，传热系数高于或低于完全疏水性表面的传热系数。在入口蒸汽速度范围内（约0.05 m / s至5 m / s），在所有表面中，特征尺寸为0.25 mm的图案化表面的传热系数最高，高于0.25 mm / s的特征系数。完全疏水的表面。

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  • 作者

    Abhra Chatterjee; Melanie M. Derby; Yoav Peles; Michael K. Jensen;

  • 作者单位

    Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States;

    Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States ,Mechanical and Nuclear Engineering Department, Kansas State University, United States;

    Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States;

    Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Condensation; Pattern; Hydrophilic; Hydrophobic; Feature size;

    机译：缩合;图案;亲水性疏水性特征尺寸;

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