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首页> 外文期刊>International Journal of Heat and Mass Transfer >Local heat transfer coefficients in spray cooling systems measured with temperature oscillation IR thermography
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Local heat transfer coefficients in spray cooling systems measured with temperature oscillation IR thermography

机译：用温度振荡红外热像仪测量的喷雾冷却系统中的局部传热系数

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摘要

This paper describes the application of the temperature oscillation IR thermography method to a spray cooling system in order to measure the spatial distribution of the heat transfer coefficients with a resolution of 0.4 mm. This technique allows for the rapid and fluid-independent evaluation of the heat transfer coefficient at the back side of a heat-transferring wall, relying on radiant heating, infrared temperature measurements, and a finite difference model of the wall. The results reveal the distribution of the local heat transfer coefficients over a surface cooled by a single- and a four-nozzle array of a multi-chip spray cooling module. The area averaged results from this method were compared to previous data measured using a conventional approach with a thermal test die and were found to be in good agreement.
机译：本文介绍了温度振荡红外热成像方法在喷雾冷却系统中的应用，以测量分辨率为0.4 mm的传热系数的空间分布。该技术可以依靠辐射加热，红外温度测量和壁的有限差分模型对传热壁背面的传热系数进行快速且独立于流体的评估。结果揭示了局部传热系数在由多芯片喷雾冷却模块的单喷嘴阵列和四喷嘴阵列冷却的表面上的分布。将这种方法的面积平均结果与使用常规方法与热测试模头测得的先前数据进行比较，发现结果吻合良好。

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