Open AccessStudy of total heat losses in experiments with shear-driving liquid films in a mini-channel with intense heating
Author(s) -
Dmitry Zaitsev,
Egor Tkachenko
Publication year - 2019
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 - 10.1088/1742-6596/1369/1/012058
Subject(s) - heat flux , critical heat flux , materials science , mechanics , work (physics) , thermodynamics , heat transfer , physics
Recent works by the authors have shown the high efficiency of using thin liquid films, moving under the action of gas in a flat mini-channel, for removing high heat fluxes. In the present work, we carefully study the total heat losses in such a system. Total heat losses are divided into two portions: heat losses from the heating coil to the atmosphere and heat spreadings from the heater to the substrate. The relative values of the total heat losses prior to the crisis are decreasing with increasing critical heat flux and do not exceed approximately 20% for the critical heat flux between 500 and 900 W/cm 2 .