https://doi.org/10.1051/epjconf/201919600002
Droplet desorption modes at high heat flux
1 Institute of Thermophysics Siberian Branch, Russian Academy of Sciences, Lavrentiev Ave. 1, Novosibirsk 630090, Russia
2 Novosibirsk State University, 2 Pirogova Street, Novosibisk 630090, Russia
* Corresponding author: misura@itp.nsc.ru
Published online: 14 January 2019
Nonisothermal droplet desorption of aqueous salt solution H2O/LiBr during nucleate boiling was studied experimentally. A droplet was placed on a horizontal heated wall. The initial concentration of salt C0 = 25 %. The wall temperature Tw = 120 °C and ambient air pressure is 1 bar. Thermal images of the temperature field on the droplet surface show an extremely non-uniform temperature field. At nucleate boiling in LiBr salt solution it is incorrect to predict the desorption behavior in stationary approximation. It was previously believed that the rate of evaporation does not vary with time. For the first time it is shown that the desorption rate is divided into several characteristic time intervals. These intervals is characterized by a significant change in the desorption rate.
© The Authors, published by EDP Sciences, 2019
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