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Article

Flow and Heat Transfer Performances of Liquid Metal Based Microchannel Heat Sinks under High Temperature Conditions

Yangzhou Collaborative Innovation Research Institute Co., Ltd., Yangzhou 225006, China
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Author to whom correspondence should be addressed.
Academic Editors: Xin Xiao, Xuan Zhang and Long Zhang
Micromachines 2022, 13(1), 95; https://doi.org/10.3390/mi13010095
Received: 15 November 2021 / Revised: 4 January 2022 / Accepted: 5 January 2022 / Published: 8 January 2022
(This article belongs to the Special Issue Heat and Mass Transfer in Microchannels)
Developments in applications such as rocket nozzles, miniature nuclear reactors and solar thermal generation pose high-density heat dissipation challenges. In these applications, a large amount heat must be removed in a limited space under high temperature. In order to handle this kind of cooling problem, this paper proposes liquid metal-based microchannel heat sinks. Using a numerical method, the flow and heat transfer performances of liquid metal-based heat sinks with different working fluid types, diverse microchannel cross-section shapes and various inlet velocities were studied. By solving the 3-D steady and conjugate heat transfer model, we found that among all the investigated cases, lithium and circle were the most appropriate choices for the working fluid and microchannel cross-section shape, respectively. Moreover, inlet velocity had a great influence on the flow and heat transfer performances. From 1 m/s to 9 m/s, the pressure drop increased as much as 65 times, and the heat transfer coefficient was enhanced by about 74.35%. View Full-Text
Keywords: microchannel heat sink; liquid metal; working fluid; cross-section shape; inlet velocity microchannel heat sink; liquid metal; working fluid; cross-section shape; inlet velocity
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MDPI and ACS Style

Wu, T.; Wang, L.; Tang, Y.; Yin, C.; Li, X. Flow and Heat Transfer Performances of Liquid Metal Based Microchannel Heat Sinks under High Temperature Conditions. Micromachines 2022, 13, 95. https://doi.org/10.3390/mi13010095

AMA Style

Wu T, Wang L, Tang Y, Yin C, Li X. Flow and Heat Transfer Performances of Liquid Metal Based Microchannel Heat Sinks under High Temperature Conditions. Micromachines. 2022; 13(1):95. https://doi.org/10.3390/mi13010095

Chicago/Turabian Style

Wu, Tao, Lizhi Wang, Yicun Tang, Chao Yin, and Xiankai Li. 2022. "Flow and Heat Transfer Performances of Liquid Metal Based Microchannel Heat Sinks under High Temperature Conditions" Micromachines 13, no. 1: 95. https://doi.org/10.3390/mi13010095

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