Numerical Study on Frost Profile over the Cooling Plate under Forced Convection

• KONDOU Chieko

  Technology Development Department, Shimizu Air Conditioning Works, Hitachi Appliances, Inc.

• SENSHU Takao

  Department of Management of Technology, Faculty of Graduate School, Yamaguchi University

• KOYAMA Shigeru

  Faculty of Interdisciplinary Graduate School of Engineering Science, Kyushu University

• KUWAHARA Ken

  Faculty of Interdisciplinary Graduate School of Engineering Science, Kyushu University

• OGUNI Kensaku

  Technology Development Department, Shimizu Air Conditioning Works, Hitachi Appliances, Inc.

Bibliographic Information

Other Title

• 強制対流中におかれた冷却平板上の着霜分布に関する解析
• キョウセイ タイリュウチュウ ニ オカレタ レイキャク ヘイバンジョウ ノ チャクソウ ブンプ ニ カンスル カイセキ

Abstract

This paper deals the numerical analysis on mass transfer under forced convection cooling. The transients of frost profiles on a cooling plat in a narrow channel were calculated by use of the packaged software with built in some original subroutines. In this paper, the architecture of these subroutines and this benchmark tests were showed. The calculation results exhibit local mass transfer rates and clarified following things. On the leading edge of the cooling plate, the frost accumulation accelerates locally. For the prediction on the cooling plate temperature distribution, to take into account latent heat of sublimation is necessary. In addition, the comparison between calculation and experimental results shows below issues. Both frost distribution profiles overlap in upstream; on the contrary, they do not overlap in the downstream. This comparison result indicates that the super saturation or mist flow is not negligible in the downstream. In terms of total frost weight, both results are roughly agreed and this weight increases proportionally with a run time despite increasing of the heat resistance caused by frost layer.

Journal

• Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers

  Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 25 (2), 87-95, 2008

  Japan Society of Refrigerating and Air Conditioning Engineers

Keywords

• Heat exchangers
• Forced convection
• Mass transfer
• Frost profile
• Moist air
• Numerical analysis

Details

• CRID: 1390282679643214208
• NII Article ID: 10021168879
• NII Article ID: 130004566132
• NII Book ID: AA11125910
• DOI: 10.11322/tjsrae.25.87
• ISSN: 2185789X
• ISSN: 13444905
• NDL BIB ID: 9566454
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9566454
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed