Improvement of Cooling Performance for Electronic Devices by Nucleate Boiling of Immiscible Mixtures
Improvement of Cooling Performance for Electronic Devices by Nucleate Boiling of Immiscible Mixtures
复制标题
通过不混溶混合物的核沸腾改善电子设备的冷却性能
DOI：
10.1088/1742-6596/745/3/032073
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Haruihiko OHTA
中科院分区：
文献类型：
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作者：
Satoshi OKAYAMA;Keisuke IWATA;Yasuhisa SHINMOTO;Haruihiko OHTA
在有核沸腾中加入非混相混合物，大大提高了冷却性能。通过挥发性较低的液体被挥发性较强的成分的高蒸气压压缩而产生高过冷，可以增加CHF。此外，表面温度较低挥发性纯液体的温度降低是由于挥发性较强组分的蒸气共存所致。将压力提高到大气以上，保持液体温度较低，可以防止不可冷凝气体的混合。此外，沸腾可以在较低的表面温度下开始，这对于诸如汽车逆变器的冷却是必需的，伴随着热负荷的大变化。参考Novec7100/水和FC72/乙醇的新数据和作者已有的数据，总结了非混相混合物在有核沸腾中的性能。
The employment of immiscible mixtures in nucleate boiling improves the cooling performance drastically. Increase of CHF is possible by high subcooling of less-volatile liquid compressed by high-vapor pressure of more-volatile component. In addition, the reduction of surface temperature from that of pure less-volatile liquid is resulted from the co-existed vapor of more-volatile component. And the increase of pressure above the atmospheric keeping low liquid temperature is possible to prevent the mixing of incondensable gases. Furthermore, boiling can be initiated at lower surface temperature, which is required for the cooling of eg automobile inverters accompanied by large variation of thermal load. The performance of immiscible mixtures in nucleate boiling are summarized with reference to new data for Novec7100/water and FC72/ethanol and existing data obtained by the present authors.