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作 者:徐健 张东辉 黄俊 冯磊 杨丰源 高祥 XU Jian;ZHANG Donghui;HUANG Jun;FENG Lei;YANG Fengyuan;GAO Xiang(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China)
机构地区:[1]江苏科技大学能源与动力学院,江苏镇江212003
出 处:《化工学报》2023年第11期4548-4558,共11页CIESC Journal
摘 要:微通道沸腾冷却在电子器件方面的应用近年备受关注。将多孔烧结微通道作为微电子器件的有效冷却方案进行了流动沸腾传热性能的实验研究,重点围绕热通量和通道宽度对流动沸腾特性的影响。烧结微通道采用铜粉加压烧结的方法,使用150μm树枝状铜粉进行烧结,制备了三种通道宽度分别为1.8、0.6和0.2 mm的并联微通道,对应的槽数分别为11、22和33槽。研究发现:存在最优通道宽度,其综合沸腾换热效果达到最优。在4 L/h流量下,中等宽度样品最高传热系数可达200 kW/(m^(2)·K),临界热通量可达到170 W/cm^(2)左右。可视化研究发现:通道宽度对压力脉动曲线会造成很大影响,适中的通道宽度压力脉动曲线更为有序,大大缓解压力脉动从而提升微通道的沸腾换热性能。The application of microchannel boiling cooling for electronic devices has attracted much attention in recent years.An experimental study of the flow boiling in sintered microchannels was carried out,focusing on the effects of channel width on the flow boiling performance.Sintered microchannels were sintered by 150μm dendritic copper powder by the pressurized sintering.Three types of parallel microchannels with channel widths of 1.8 mm,0.6 mm,and 0.2 mm were prepared,corresponding to channel number,11,22,and 33,respectively.It was found that there exists the optimal channel width for the sintered microchannel,which could achieve the maximum heat transfer coefficient of 200 kW/(m^(2)·K),and the largest critical heat flux of about 170 W/cm^(2) at a flow rate of 4 L/h.Visual research found that the channel width has a great impact on the pressure pulsation curve.A moderate channel width pressure pulsation curve is more orderly,which greatly alleviates the pressure pulsation and thereby improves the boiling heat transfer performance of the microchannel.
分 类 号:TK124[动力工程及工程热物理—工程热物理]
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