Flow Boiling of Water in Square Cross Section Microchannel at Different Inlet Subcooling Conditions
Flow Boiling of Water in Square Cross Section Microchannel at Different Inlet Subcooling Conditions
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DOI：
10.11159/icmfht20.154
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
S. Korniliou;T. Karayiannis
中科院分区：
文献类型：
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作者：
S. Korniliou;T. Karayiannis
研究了进口过冷度对去离子水在1.0 mm×1.0 mm、75 mm长的水平单微通道中流动沸腾换热的影响。针对质量流量分别为2 0 0、4 0 0和6 0 0 kg/m2的S，在105455 kW/m2范围内增加基础热流密度，研究了5 0、15和5K三种进口过冷条件。流动沸腾模式与相应的微通道局部换热系数和各入口过冷条件下的压降特性有关。研究表明，在所研究的范围内，进口过冷度对两相换热速率、压降和流型有显著影响。
The effect of inlet subcooling on flow boiling heat transfer of deionised water in a horizontal singlemicrochannel of square cross section 1.0 mm by 1.0 mm and 75 mm long was studied. Three inlet sub-cooling conditions of 50, 15 and 5 K were studied for the mass fluxes of 200, 400 and 600 kg/m 2 s with increasing base heat fluxes in the range of 105455 kW/m 2 . Flow boiling patterns were related to corresponding local heat transfer coefficient along the microchannel and pressure drop characteristics for each inlet sub-cooling condition. This study demonstrates that, inlet sub-cooling has a significant effect on the two-phase heat transfer rates, pressure drop and flow patterns in the range studied.