| 基于流动沸腾传热机理的分段式微通道结构优化研究 |
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| 引用本文： | 颜俏,党超,贾力.基于流动沸腾传热机理的分段式微通道结构优化研究[J].工程热物理学报,2022,43(2):472-478. |
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| 作者姓名： | 颜俏 党超 贾力 |
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| 作者单位： | 北京交通大学机械与电子控制工程学院热能工程研究所,北京100044;微细尺度相变流动与传热北京市重点实验室,北京100044;西部金属材料股份有限公司联合技术中心,西安710018,北京交通大学机械与电子控制工程学院热能工程研究所,北京100044;微细尺度相变流动与传热北京市重点实验室,北京100044 |
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| 基金项目： | 中央高校基本科研业务费(No.2020JBM055);北京市自然科学基金(No.3214054)。 |
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| 摘 要： | 列车牵引变流器功率模块IGBT的散热问题近年来备受关注.本文以微通道内流动沸腾换热的"M"型曲线峰值点传热强化理论为依据,通过实验研究微通道长度和结构对冷板表面温度的影响,发现短通道能够有效控制通道内蒸汽干度水平,使得微通道冷板内以弹状流或薄膜环状流为主流流型,从而获得较高传热系数.在一定面积的冷板内设置短通道组合的分...
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| 关 键 词： | 微通道流动沸腾 通道长度 结构形式 流型控制 优化方法 |
Research on Optimization of Segmented Micro-channel Structure Based on Flow Boiling Heat Transfer Mechanism |
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| YAN Qiao,DANG Chao,JIA Li.Research on Optimization of Segmented Micro-channel Structure Based on Flow Boiling Heat Transfer Mechanism[J].Journal of Engineering Thermophysics,2022,43(2):472-478. |
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| Authors: | YAN Qiao DANG Chao JIA Li |
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| Institution: | (Institute of Thermal Engineering,School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China;Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale,Beijing 100044,China;United Technology Center,Western Metal Materials Co.,Ltd.,Xi’an 710018,China) |
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| Abstract: | The heat dissipation problem faced by the IGBT module of the train traction converter has attracted much attention in recent years.Based on the heat transfer enhancement theory of the“M”curve peak point of the flow boiling heat transfer in the micro-channel,the influences of the channel lengths and structural forms on the surface temperature of the cold plate were experimentally researched in this paper.It was found that short channel could effectively control the vapor quality at a good level,which made the mainstream flow patterns in the micro-channel plate to be slug flow or annular flow with thin film,thus leading a high heat transfer coefficient.The segmented structure of the short channel combination in a certain area of the cold plate had a significant effect on enhancing heat transfer.On this basis,a function of channel length to diameter ratio on the midpoint vapor quality was established to guide the structure optimization of the micro-channel cold plates design that adapted to different sizes of IGBT modules. |
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| Keywords: | micro-channel flow boiling heat transfer channel length structural form flow patterns controlling optimization method |
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