| Boiling Heat Transfer in an Acoustic Cavitation Field |
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| 作者姓名： | 周定伟 刘登瀛 |
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| 作者单位： | ZHOU Dingwei LIU DengyingInstitute of Engineering Thermophysics，Chinese Academy of Sciences，Beijing 100080，China |
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| 基金项目： | Supported bv the National Key Basic Research Science Foundation of China (G2000026305). |
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| 摘 要： | An experimental study has been carried out to investigate systematically the effects of acoustic cavi-tation parameters and fluid subcooling on boiling of acetone around a horizontal circular tube. The experimental results show that acoustic cavitation enhanced remarkably the boiling heat transfer and decreased the incipient boiling superheat and that cavitation bubbles effect on boiling heat transfer reduced with cavitation distance. For boiling 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 with the consideration of cavitation bubble influence on vapor embryo.
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Boiling Heat Transfer in an Acoustic Cavitation Field |
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| ZHOU Dingwei LIU DengyingInstitute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing ,China.Boiling Heat Transfer in an Acoustic Cavitation Field[J].Chinese Journal of Chemical Engineering,2002(5). |
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| Authors: | ZHOU Dingwei LIU DengyingInstitute of Engineering Thermophysics Chinese Academy of Sciences Beijing China |
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| Affiliation: | ZHOU Dingwei LIU DengyingInstitute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100080,China |
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| Abstract: | An experimental study has been carried out to investigate systematically the effects of acoustic cavi-tation parameters and fluid subcooling on boiling of acetone around a horizontal circular tube. The experimental results show that acoustic cavitation enhanced remarkably the boiling heat transfer and decreased the incipient boiling superheat and that cavitation bubbles effect on boiling heat transfer reduced with cavitation distance. For boiling 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 with the consideration of cavitation bubble influence on vapor embryo. |
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| Keywords: | acoustic cavitation boiling heat transfer hysteresis |
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