Evaporation modes of LiBr, CaCl2, LiCl, NaCl aqueous salt solution droplets on aluminum surface

Кузнецов, Г. В.; Feoktistov, Dmitriy; Orlova, E.G.; Misyura, S.Y.; Морозов, В. С.; Islamova, Anastasia

doi:10.1016/j.ijheatmasstransfer.2018.05.040

Cited by 67 publications

(26 citation statements)

References 29 publications

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“…It is characteristic that over evaporation time the crystal forms on the free surface of the droplet can vary and depend on the wettability. The beginning of crystallization in the drop is realized in the precursor film of the salt solution 25 , where the maximum supersaturation occurs. Collective effects and spontaneous crystallization in water droplets on the surface of heavy oil are considered in 26 .…”

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confidence: 99%

The crystallization behavior of the aqueous solution of CaCl2 salt in a drop and a layer

Misyura

2020

Sci Rep

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Non-isothermal evaporation during crystallization of CaCl2 salt in a droplet and a thin layer on a hot wall has been investigated experimentally. The growth of salt crystal hydrates (CaCl2·2H2O) on the interface has been studied. It has been found that the change in the initial salt concentration leads to different crystallization rates. The crystallization rate on the droplet interface is many times lower than for a thin layer. The description of crystallization in the salt solution droplet should take into account the crystallization anisotropy, which is associated with the direction of crystallization. The crystallization rate along the contact line of the droplet is many times higher than in the direction of the droplet radius. For a long time of crystallization, the area of the crystal film (outside the drop) increases several times. Four characteristic modes of crystallization to a drop of salt solution have been distinguished. When modeling crystallization, it is necessary to take into account multiple changes in the growth rate of salt crystallohydrates over time, as well as the anisotropic nature of crystallization.

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confidence: 99%

The crystallization behavior of the aqueous solution of CaCl2 salt in a drop and a layer

Misyura

2020

Sci Rep

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“…It is known from early studies [11][12][13] that proportion of heat transfer by evaporation within evaporative water coolers is very high, thus, the heat balance equation with sufficient accuracy (without taking into account heat conductivity, convection and vapor condensation) can be recorded as follows:…”

Section: Hmttsc-2018mentioning

confidence: 99%

Heat-mass transfer efficiency within the cooling towers with jet-film contact devices

2018

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Abstract. Jet-film contact devices with special design elements for intensification of heat-mass transfer processes are proposed. An experimental apparatus has been created in order to study the interaction of water and air flows within these devices. It has been revealed that an increase in the ratio of mass flow rate of liquid and gas phases leads to a decrease in heat efficiency coefficient. Within the area of high values of specific loads, an increase in the local minimum of mass transfer efficiency is observed.

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“…An investigation of the kinetics of growth of crystalline hydrates was considered in [8]. The cooling rate of the heated wall depends both on the geometric parameters of the droplets (the effect of an angle, diameter) and on the wettability [9][10]. The presence of a structured wall leads to an increased heat transfer [11][12].…”

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confidence: 99%

The dynamics of nucleate boiling of salt solutions at a high heat flux

Морозов

Elistratov

2019

EPJ Web Conf.

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In this paper, experimental results are obtained for the desorption of layers of aqueous salt solutions of LiBr and CaCl 2 at a temperature of nucleate boiling on a horizontal heating surface. The wall temperature is 130 °C. The required volume of the solution with a given mass concentration is placed on the working surface using the Thermo Scientific dispensers. After that, the desorption rate continuously decreases over time. A decrease in the wall temperature leads to a drop in the intensity of the bubbling boiling. The effect of gas convection during evaporation and thermal radiation is small in comparison with the heat of evaporation.

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Evaporation modes of LiBr, CaCl2, LiCl, NaCl aqueous salt solution droplets on aluminum surface

Cited by 67 publications

References 29 publications

The crystallization behavior of the aqueous solution of CaCl2 salt in a drop and a layer

The crystallization behavior of the aqueous solution of CaCl2 salt in a drop and a layer

Heat-mass transfer efficiency within the cooling towers with jet-film contact devices

The dynamics of nucleate boiling of salt solutions at a high heat flux

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