ENHANCEMENT OF HEAT TRANSFER RATE IN A FALLING FILM LAYER BY ULTRASONIC IRRADIATION

この論文にアクセスする

この論文をさがす

著者

抄録

This study is concerned with enhancing the heat transfer rate in a falling film layer of ethylene glycol on an inclined rectangular tray by applying ultrasonic waves irradiated from the bottom of the tray. The heat transfer coefficient in a falling film layer of ethylene glycol was determined by the measured temperature distributions under various conditions of liquid flow rate, power supplied to an ultrasonic vibrator and frequency of the ultrasonic wave. The evaporation rate of water from a failing film of ethylene glycol/water mixture was also measured.<BR>As a result, the enhancing effect of ultrasonic irradiation on the heat transfer coefficient was obtained with increasing liquid flow rate. It was found that ultrasonic irradiation of 23.6 kHz was more effective to enhance the heat transfer rate in a falling film layer than 46.9 kHz ultrasonic waves. The heat transfer coefficient in a falling film layer was increased by ultrasonic irradiation in the order about 30%, which was obtained at a film Reynolds number of 50.0 by using 23.6 kHz ultrasonic waves. It was recognized that ultrasonic waves increased the evaporation rate of water in a falling film of ethylene glycol/water mixture.

収録刊行物

  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 28(5), 570-575, 1995-10

    The Society of Chemical Engineers, Japan

参考文献:  8件中 1-8件 を表示

  • <no title>

    FULFORD G. D.

    Advances in Chemical Engineering 157, 1964

    被引用文献1件

  • <no title>

    HIJIKATA K.

    Proc. of 28th National Heat Transfer Symp. of Japan, D223, 556-558, 1991

    被引用文献1件

  • <no title>

    ISSHIKI N.

    Proc. of 28th National Heat Transfer Symp. of Japan, D213, 544-546, 1991

    被引用文献1件

  • <no title>

    ISSHIKI N.

    Proc. of 28th National Heat Transfer Symp. of Japan, D214, 547-549, 1991

    被引用文献1件

  • <no title>

    KASHIWAGI T.

    Transactions of the Japan Society of Mechanical Engineers 57(539), 2277-2284, 1991

    被引用文献1件

  • <no title>

    YAMASHITA K.

    Proc. of 29th National Heat Transfer Symp. of Japan, F321, 861-863, 1992

    被引用文献1件

  • <no title>

    YAMASHITA K.

    Proc. of 30th National Heat Transfer Symp. of Japan, D211, 598-600, 1993

    被引用文献1件

  • アンモニア蒸気吸収過程における物質拡散 : 第2報, 界面活性剤の添加によるマランゴニ対流の発生

    柏木 孝夫 , 岡島 次郎 , 浅輪 泰久 , 山中 伸一

    日本機械学會論文集. B編 58(556), 3697-3702, 1992-12-25

    被引用文献1件

各種コード

  • NII論文ID(NAID)
    10002134465
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • データ提供元
    CJP書誌  J-STAGE 
ページトップへ