多翼ラジアルファンの流体力学的特性に関する研究 : ケ-シング出口角および露出長さの影響  [in Japanese] Aerodynamic Characteristics of Multiblade Radial Flow Fan : Effects of the Bare Length and the Divergent Angle at the Outlet of the Scroll Casing  [in Japanese]

    • 児玉 好雄 Kodama Yoshio
    • 長崎大学工学部機械システム工学科 Department of Mechanical Systems Engineering, Faculty of Engineering, Nagasaki University
    • 林 健生 Hayashi Takeo
    • 長崎大学大学院機械システム学専攻 Graduate Student, Department of Mechanical Systems Engineering, Nagasaki University

    • システム工学科

Abstract

It was made to improve a fan efficiency by varying the bare length defined as the distance between the tongue tip and the impeller tip, and the divergent angle at the outlet of the scroll casing. It is concluded that (1) The larger the bare length is, the higher the flow rate is. (2) When the bare length is 15mm, the fan efficiency is highest. (3) The fan efficiency is highest at the divergent angle θ=0°. (4) The smaller the bare length is, the larger the total pressure drop is due to the skin friction.

It was made to improve a fan efficiency by varying the bare length defined as the distance between the tongue tip and the impeller tip, and the divergent angle at the outlet of the scroll casing. It is concluded that (1) The larger the bare length is, the higher the flow rate is. (2) When the bare length is 15mm, the fan efficiency is highest. (3) The fan efficiency is highest at the divergent angle θ=0°. (4) The smaller the bare length is, the larger the total pressure drop is due to the skin friction.

Journal

Reports of the Faculty of Engineering, Nagasaki University   [List of Volumes]

Reports of the Faculty of Engineering, Nagasaki University 28(50), 21-28, 1998-01  [Table of Contents]

Nagasaki University

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Codes

  • NII Article ID (NAID) :
    110000203459
  • NII NACSIS-CAT ID (NCID) :
    AN00178418
  • Text Lang :
    JPN
  • Article Type :
    Departmental Bulletin Paper
  • Journal Type :
    大学紀要
  • ISSN :
    02860902
  • NDL Article ID :
    4422751
  • NDL Source Classification :
    ZM2(科学技術--科学技術一般--大学・研究所・学会紀要)
  • NDL Call No. :
    Z14-487
  • Databases :
    NDL  NII-ELS  IR 

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