Open AccessHeat transfer crisis investigation in a microchannel with and without nanoparticles coating
Author(s) -
Yu. A. Kuzma-Kichta,
A. V. Lavrikov,
Michael Shustov,
E A Kustova,
Н. С. Иванов,
E A Kuleshov,
A. Kiselev
Publication year - 2020
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 - 10.1088/1742-6596/1683/2/022087
Subject(s) - microchannel , coating , critical heat flux , materials science , heat transfer , heat flux , nanoparticle , nucleate boiling , boiling , composite material , thermodynamics , nanotechnology , physics
Heat transfer crisis was investigated during water boiling in a microchannel without coating and with coating of aluminum oxide nanoparticles. Experiments were performed on an advanced setup with a horizontally located microchannel with dimensions of 12.5x3x0.2 mm. Calculation of the critical heat flux in the microchannel without coating and with a coating from nanoparticles, carried out by formulas for heat transfer crisis in a horizontal pipe with microporous coating and one-sided heating. For the microchannel coated with nanoparticles the critical heat flux was calculated for the conditions of no influence of liquid subcooling and initial section. The satisfactory agreement between the experimental and calculated data was obtained. dependences of the critical heat flux from the coating thickness and characteristic size of particles were also shown. However, the data array is limited and needs to be expanded what will improve the equations for critical heat flux in a microchannel with nanoparticles coating.