Analysis of the Influence of Atomization Characteristics on Heat Transfer Characteristics of Spray Cooling
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The development of big data leads to the increasing heat dissipation of chips in data center. As an efficient pattern to remove high heat flux, spray cooling has huge potential for data center cooling. Spray cooling system was established combined with particle image velocimetry (PIV) system. The results show that as the spray diameter decreases, the outlet pressure and outlet velocity of the droplet increase, and the spray cone angle increases. This occasion introduces only minor part of the droplets actually participate in the heat exchange, resulting in a higher velocity and a smaller heat transfer coefficient. It is also inferred that better uniformity of droplets velocity is beneficial for the heat transfer performance.
KeywordsSpray cooling Spray atomization PIV Flow pattern distribution Heat transfer coefficient
This work is supported by the National Natural Science Foundation of China (Grant No. 51806096) and Natural Science Foundation of the Jiangsu Higher Education Institutions of China (Grant No. 18KJB560007).
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