Open AccessEffect of Copper Particles Shape on the Heat Transfer Characteristics of Porous Microchannels During Boiling of Working Fluid
Author(s) -
Weiyu Jiang,
Li Sun,
Jijin Mao,
Donghui Zhang,
Levtsev Aleksei
Publication year - 2021
Publication title -
bûlletenʹ nauki i praktiki
Language(s) - English
Resource type - Journals
ISSN - 2414-2948
DOI - 10.33619/2414-2948/65/32
Subject(s) - microchannel , critical heat flux , heat transfer , boiling , materials science , particle (ecology) , porosity , nucleate boiling , heat transfer coefficient , particle size , heat flux , copper , micro heat exchanger , thermodynamics , composite material , chemical engineering , metallurgy , nanotechnology , physics , oceanography , geology , engineering
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.