Open AccessDecrease of Leidenfrost temperature at quenching in subcooled liquids
Author(s) -
A. R. Zabirov,
V. V. Yagov,
V. A. Ryazantsev,
I A Molotova,
Michael Vinogradov
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 - 10.1088/1742-6596/2116/1/012010
Subject(s) - subcooling , leidenfrost effect , materials science , thermodynamics , work (physics) , coating , quenching (fluorescence) , boiling , composite material , heat flux , heat transfer , nucleate boiling , physics , optics , fluorescence
Cooling of high-temperature bodies in liquids largely depends on its subcooling to the saturation temperature. An increase in subcooling leads to an increase in the surface temperature, at which the vapor film loses its stability and an intensive cooling regime begins. This temperature depends on a number of parameters, such as the properties of a liquid and a solid, the composition and topology of the surface, the value of subcooling. Within the framework of this work, it was possible to achieve a significant decrease in the temperature of the onset of an intensive cooling mode in subcooled water and ethanol by using as working sections of metal samples with a high of thermal effusivity, low roughness and a protective coating from oxidation. The obtained experimental results confirm the approximate model of the appearance of an intense cooling regime