Droplets boiling crisis of ethanol water solution on duralumin substrate with SiO 2 nanoparticles coating

Misyura, S.Y.

doi:10.1016/j.expthermflusci.2016.01.015

Cited by 57 publications

(7 citation statements)

References 63 publications

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“…At nucleate boiling of aqueous salt solution the bubble growth rate decreases significantly in comparison with boiling in pure water. With bubble growth in an aqueous solution, the bubble contact line is unstable, and a dry spot under the bubble does not form 21 . The fact of dry spot absence is very important, and this allows substantially raising the critical heat fluxes.…”

Section: Introductionmentioning

confidence: 99%

Evaporation of a sessile water drop and a drop of aqueous salt solution

Misyura

2017

Sci Rep

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The influence of various factors on the evaporation of drops of water and aqueous salt solution has been experimentally studied. Typically, in the studies of drop evaporation, only the diffusive vapor transfer, radiation and the molecular heat conduction are taken into account. However, vapor-gas convection plays an important role at droplet evaporation. In the absence of droplet boiling, the influence of gas convection turns out to be the prevailing factor. At nucleate boiling, a prevailing role is played by bubbles generation and vapor jet discharge at a bubble collapse. The gas convection behavior for water and aqueous salt solution is substantially different. With a growth of salt concentration over time, the influence of the convective component first increases, reaches an extremum and then significantly decreases. At nucleate boiling in a salt solution it is incorrect to simulate the droplet evaporation and the heat transfer in quasi-stationary approximation. The evaporation at nucleate boiling in a liquid drop is divided into several characteristic time intervals. Each of these intervals is characterized by a noticeable change in both the evaporation rate and the convection role.

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Section: Introductionmentioning

confidence: 99%

Evaporation of a sessile water drop and a drop of aqueous salt solution

Misyura

2017

Sci Rep

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“…The nature of such waves is associated with thermocapillary Marangoni stresses [17]. Critical heat flux depends on the Marangoni instability for microlayer bubble [18]. Droplets crisis behavior at high heat fluxes was considered in [19,20].…”

Section: Introductionmentioning

confidence: 99%

Non-isothermal desorption and nucleate boiling in a water-salt droplet LiBr

Misyura¹

2018

THERM SCI

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Experimental data on desorption and nucleate boiling in a droplet of LiBr-water solution were obtained. An increase in salt concentration in a liquid-layer leads to a considerable decrease in the rate of desorption. The significant decrease in desorption intensity with a rise of initial mass concentration of salt has been observed. Evaporation rate of distillate droplet is constant for a long time period. At nucleate boiling of a water-salt solution of droplet several characteristic regimes occur: heating, nucleate boiling, desorption without bubble formation, formation of the solid, thin crystalline-hydrate film on the upper droplet surface, and formation of the ordered crystalline-hydrate structures during the longer time periods. For the final stage of desorption there is a big difference in desorption rate for initial salt concentration, C 0 , 11% and 51%. This great difference in the rate of desorption is associated with significantly more thin solution film for C 0 = 11% and higher heat flux.

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“…The droplet behavior on hydrophobic surfaces is studied in Refs. [9,10]. Boiling of the gas-drop flow is considered in Refs.…”

Section: Introductionmentioning

confidence: 99%

The influence of various factors on the droplet desorption

Misyura

Морозов

2017

J. Phys.: Conf. Ser.

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Abstract. Experimental data on sessile droplet desorption of aqueous salt solution of LiBr on a heated wall were implemented. High-temperature desorption of water-salt solutions in air atmosphere leads to significant difficulties at modeling heat and mass transfer. In this case, the evaporation rate multiply decreases with time and the diffusion coefficient, the desorption heat and the salt concentration change significantly. With the growth of salt concentration in solution from 10 % to 65 %, the steam partial pressure at the interface falls by dozens of times. In this study, we performed experiments in a wide range of salt concentrations and proposed a simple estimated method for calculating the mass flow. The resulting technique can predict the droplet solution behavior with a significant change in the partial vapor pressure on the droplet interphase with time.

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Droplets boiling crisis of ethanol water solution on duralumin substrate with SiO 2 nanoparticles coating

Cited by 57 publications

References 63 publications

Evaporation of a sessile water drop and a drop of aqueous salt solution

Evaporation of a sessile water drop and a drop of aqueous salt solution

Non-isothermal desorption and nucleate boiling in a water-salt droplet LiBr

The influence of various factors on the droplet desorption

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