Air-side Performance of Corrugated-finless Evaporator using Flat Extruded Tubes

DOI
  • YAMAMURA Shuji
    Graduate School of Frontier Sciences, The University of Tokyo
  • MUROFUSHI Takahiko
    Graduate School of Frontier Sciences, The University of Tokyo
  • HIGASHI Tomohiro
    Energy Innovation Center, Central Research Institute of Electric Power Industry
  • DANG Chaobin
    Graduate School Engineering, University of Fukui
  • HIHARA Eiji
    Natioanal Institution for Academic Degrees and Quality Enhancement of Higher Education

Bibliographic Information

Other Title
  • 扁平多孔管を用いたフィンレス蒸発器の空気側性能に関する研究

Abstract

<p>A corrugated fin heat exchanger using flat extruded tubes is compact and has high performance, however, when used as an evaporator, it has drainage problems. In this study, we studied the evaporator using flat extruded tubes without corrugated fin and has plates at the sides to improve the drainage. Four types of flat extruded tubes with different channel sizes and plats were prototyped, and single-pass heat exchangers were manufactured. These heat exchangers were installed in a wind tunnel where the air temperature, humidity, and velocity could be controlled, and the heat exchange rate and air-side pressure drop were measured under the two conditions: dry surface, wet surface conditions. The newly developed heat exchangers have the feature that the condensed water flows down without stagnation, and the heat transfer coefficient can be increased compared to the conventional heat exchangers while suppressing the increase in pressure drop.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390013168585558656
  • DOI
    10.11322/tjsrae.21-26
  • ISSN
    2185789X
    13444905
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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