Heat Transfer Enhancement of Natural Convection and Development of a High-Performance Heat Transfer Plate

IR
  • Misumi Toshiyuki
    Department of Mechanical Engineering, Kagoshima National College of Technology
  • Kitamura Kenzo
    Department of Energy Engineering, Toyohashi University of Technology

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・rights：日本機械学会・rights：本文データは学協会の許諾に基づきCiNiiから複製したものである・relation：isVersionOf：http://ci.nii.ac.jp/naid/110002976639/
A new enhancing technique was developed for natural convection adjacent to a vertical, heated plate. In order to enhance the heat transfer, V-shaped plates of which the edges faced upstream, were attached to a vertical plate in a staggered layout. These plates work not only as an extended surface but also as a heat transfer promoter. The overall heat transfer coefficients of the above enhanced surface were measured and compared with a nontreated, flat surface and a conventional finned surface. The results show that the highest heat transfer performance achieved is for the experimental surface and that the heat transfer coefficient is 40% higher than that of a conventional finned surface with the same total surface area and fin height.

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