Effect of copper particles shape on the heat transfer characteristics of porous microchannels during boiling of working fluid
Автор: Jiang Weiyu, Sun Lili, Mao Jijin, Zhang Donghui, Levtsev Aleksei
Журнал: Бюллетень науки и практики @bulletennauki
Рубрика: Технические науки
Статья в выпуске: 4 т.7, 2021 года.
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In this paper, the heat transfer performance of porous microchannels sintered with spherical and dendritic copper particle is compared. The working fluid is deionized water. For uniform particle size sample, the dendritic-particle microchannel presents better boiling heat transfer performance than the spherical-particle one. It includes higher critical heat flux (CHF), which was related to the connected pore structure of the dendritic copper powder. For mixed particle size sample, the dendritic-particle microchannel also shows higher heat transfer coefficient and CHF. At high heat flux, the dendritic-particle microchannel can effectively suppress the pressure pulsation and maintain a relatively stable flow boiling state in the microchannel.
Porous microchannels, flow boiling, heat transfer performance, copper powder particles shape
Короткий адрес: https://sciup.org/14120503
IDR: 14120503 | DOI: 10.33619/2414-2948/65/32
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