Open AccessProspects for using two-phase micro-size systems for high heat flux removal
Author(s) -
В. В. Кузнецов,
А. С. Шамирзаев,
A. S. Mordovskoy
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2057/1/012058
Subject(s) - heat sink , critical heat flux , subcooling , heat transfer , materials science , heat flux , nucleate boiling , mechanics , boiling , jet (fluid) , thermodynamics , high heat , heat transfer enhancement , micro heat exchanger , heat transfer coefficient , composite material , physics
Heat transfer in active systems for high heat removal based on the micro-channels and hybrid micro-channel/micro-jet is considered. The application of these systems allows significantly increasing the critical heat flux for a dense arrangement of the heat stressed equipment. The characteristics of heat transfer and critical heat flux during subcooled flow boiling of water in the micro-channel heat sink and during micro-jet impingement in narrow channel are obtained. The experiments are performed for the horizontal segmented microchannels with a cross section of 340×2000 μm 2 made on the top of copper target and for impingement micro-jet cooling of the copper target in the gap of 1000 μm. It has been found that, compared with impingement micro-jet cooling in similar condition, the micro-channel cooling is more effective for high heat flux removal although it creates the considerably high wall temperature.