CIESC Journal

• RESEARCH NOTES • 上一篇    

声空化场下的沸腾传热

周定伟; 刘登瀛   

  1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-10-28 发布日期:2002-10-28
  • 通讯作者: 周定伟

Boiling Heat Transfer in an Acoustic Cavitation Field

ZHOU Dingwei; LIU Dengying   

  1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-10-28 Published:2002-10-28
  • Contact: ZHOU Dingwei

摘要: An experimental study has been carried out to investigate systematically the effects of
acoustic cavitation parameters and fluid subcooling on boiling of acetone around a
horizontal circular tube. The experimentalresults show that acoustic cavitation enhanced
remarkably the boiling heat transfer and decreased the incipientboiling superheat and that
cavitation bubbles effect on boiling heat transfer reduced with cavitation distance.
Forboiling curves in a form of h-q″, elevated cavitation distance shift nucleate boiling
curves to the right of the corresponding ordinary pool boiling curve. The associated
mechanism of heat transfer enhancement is analyzed withthe consideration of cavitation
bubble influence on vapor embryo.

关键词: acoustic cavitation;boiling heat transfer;hysteresis

Abstract: An experimental study has been carried out to investigate systematically the effects of
acoustic cavitation parameters and fluid subcooling on boiling of acetone around a
horizontal circular tube. The experimentalresults show that acoustic cavitation enhanced
remarkably the boiling heat transfer and decreased the incipientboiling superheat and that
cavitation bubbles effect on boiling heat transfer reduced with cavitation distance.
Forboiling curves in a form of h-q″, elevated cavitation distance shift nucleate boiling
curves to the right of the corresponding ordinary pool boiling curve. The associated
mechanism of heat transfer enhancement is analyzed withthe consideration of cavitation
bubble influence on vapor embryo.

Key words: acoustic cavitation, boiling heat transfer, hysteresis