| 超声振动对换热器管内传热和压降影响 |
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| 引用本文： | 段希利,王选盈,王刚,陈彦泽,仇性启.超声振动对换热器管内传热和压降影响[J].石油化工设备,2004,33(1):1-4. |
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| 作者姓名： | 段希利 王选盈 王刚 陈彦泽 仇性启 |
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| 作者单位： | 石油大学(华东)机电工程学院,山东东营,257061 |
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| 基金项目： | 中国石油天然气集团公司科学研究与技术开发项目 (990 814 0 8) |
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| 摘 要： | 利用设计的超声振动装置和管壳式换热器模型 ,研究了在不同超声功率作用下 3种换热管的传热和流动性能 ,得到了超声振动对换热器的传热系数及管程压降的影响规律。结果表明 ,由于超声振动产生的空化效应破坏了层流边界层 ,使传热系数明显提高 ,同时降低了管程的压力降。实验还发现超声振动对波纹管的强化传热和降阻效果优于光管。研究结果为波纹管和超声振动的复合强化传热技术在管壳式换热器强化传热中的应用提供了理论基础。
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| 关 键 词： | 换热器 超声振动 传热 压降 |
| 文章编号： | 1000-7466(2004)01-0001-04 |
| 修稿时间： | 2003年7月25日 |
Experimental study on the influence of ultrasonic vibration on heat transfer and pressure drop in heat exchanger tubes |
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| DUAN Xi-li,WANG Xuan-ying,WANG Gang,CHEN Yan-ze,QIU Xing-qi.Experimental study on the influence of ultrasonic vibration on heat transfer and pressure drop in heat exchanger tubes[J].Petro-Chemical Equipment,2004,33(1):1-4. |
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| Authors: | DUAN Xi-li WANG Xuan-ying WANG Gang CHEN Yan-ze QIU Xing-qi |
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| Abstract: | The heat transfer performance and pressure drop of 3 different tubes under different ultrasonic power are experimentally investigated using a tube-shell heat exchanger model and the designed ultrasonic vibration device. The results show that the heat transfer coefficient increases obviously while the pressure drop decreases dramatically due to the effect of ultrasonic cavitation, which continuously breaks the laminar boundary layer. In addition, the corrugated tubes present better enhancement performance than the bare tubes under ultrasonic vibration. The investigation provides basis for the application of compound heat transfer enhancement of corrugated tubes and ultrasonic vibration in tube-shell heat exchangers. |
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| Keywords: | heat exchanger ultrasonic vibration heat transfer pressure drop |
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