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

G. V. Kuznetsov, D. V. Feoktistov, E. G. Orlova, S. Y. Misyura, V. S. Morozov, A. G. Islamova

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The evaporation of droplets of the LiBr, CaCl2, LiCl and NaCl aqueous salt solutions were studied experimentally and their evaporation characteristics were compared to droplets of distilled water. The geometrical parameters of droplets (contact angle, height, and diameter) were measured using three methods of data processing: tangential methods (T) and the Young-Laplace method (Y-L). Scattering of the measured data does not depend on the processing method selected for large contact angles. However, in the case of small contact angles, the Y-L method exhibited the smallest measurement error. An optical method allowed for measuring the contact angle of salt solutions droplets just prior to crystallization. The experiments have shown that crystalline hydrates grow near the contact line and distort the droplet profile. The contact angles of salt solution droplets were found to depend on time in a non-linear manner. Typical evaporation modes of the studied aqueous salt solutions are detected: 1 – increasing the contact diameter; 2 – pinning the droplet; 3 – formation of salt crystals (NaCl) or crystalline hydrates (LiBr, CaCl2 and LiCl).

Original languageEnglish
Pages (from-to)161-168
Number of pages8
JournalInternational Journal of Heat and Mass Transfer
Volume126
DOIs
Publication statusPublished - 1 Nov 2018

Fingerprint

Aluminum
Evaporation
Salts
evaporation
salts
aluminum
Contact angle
hydrates
Hydrates
Contacts (fluid mechanics)
Crystalline materials
Crystallization
Measurement errors
optics
crystallization
profiles
Scattering
scattering
water
crystals

Keywords

  • Contact angle
  • Crystalline hydrate
  • Desorption
  • Evaporation mode
  • Salt solution

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

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title = "Evaporation modes of LiBr, CaCl2, LiCl, NaCl aqueous salt solution droplets on aluminum surface",
abstract = "The evaporation of droplets of the LiBr, CaCl2, LiCl and NaCl aqueous salt solutions were studied experimentally and their evaporation characteristics were compared to droplets of distilled water. The geometrical parameters of droplets (contact angle, height, and diameter) were measured using three methods of data processing: tangential methods (T) and the Young-Laplace method (Y-L). Scattering of the measured data does not depend on the processing method selected for large contact angles. However, in the case of small contact angles, the Y-L method exhibited the smallest measurement error. An optical method allowed for measuring the contact angle of salt solutions droplets just prior to crystallization. The experiments have shown that crystalline hydrates grow near the contact line and distort the droplet profile. The contact angles of salt solution droplets were found to depend on time in a non-linear manner. Typical evaporation modes of the studied aqueous salt solutions are detected: 1 – increasing the contact diameter; 2 – pinning the droplet; 3 – formation of salt crystals (NaCl) or crystalline hydrates (LiBr, CaCl2 and LiCl).",
keywords = "Contact angle, Crystalline hydrate, Desorption, Evaporation mode, Salt solution",
author = "Kuznetsov, {G. V.} and Feoktistov, {D. V.} and Orlova, {E. G.} and Misyura, {S. Y.} and Morozov, {V. S.} and Islamova, {A. G.}",
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T1 - Evaporation modes of LiBr, CaCl2, LiCl, NaCl aqueous salt solution droplets on aluminum surface

AU - Kuznetsov, G. V.

AU - Feoktistov, D. V.

AU - Orlova, E. G.

AU - Misyura, S. Y.

AU - Morozov, V. S.

AU - Islamova, A. G.

PY - 2018/11/1

Y1 - 2018/11/1

N2 - The evaporation of droplets of the LiBr, CaCl2, LiCl and NaCl aqueous salt solutions were studied experimentally and their evaporation characteristics were compared to droplets of distilled water. The geometrical parameters of droplets (contact angle, height, and diameter) were measured using three methods of data processing: tangential methods (T) and the Young-Laplace method (Y-L). Scattering of the measured data does not depend on the processing method selected for large contact angles. However, in the case of small contact angles, the Y-L method exhibited the smallest measurement error. An optical method allowed for measuring the contact angle of salt solutions droplets just prior to crystallization. The experiments have shown that crystalline hydrates grow near the contact line and distort the droplet profile. The contact angles of salt solution droplets were found to depend on time in a non-linear manner. Typical evaporation modes of the studied aqueous salt solutions are detected: 1 – increasing the contact diameter; 2 – pinning the droplet; 3 – formation of salt crystals (NaCl) or crystalline hydrates (LiBr, CaCl2 and LiCl).

AB - The evaporation of droplets of the LiBr, CaCl2, LiCl and NaCl aqueous salt solutions were studied experimentally and their evaporation characteristics were compared to droplets of distilled water. The geometrical parameters of droplets (contact angle, height, and diameter) were measured using three methods of data processing: tangential methods (T) and the Young-Laplace method (Y-L). Scattering of the measured data does not depend on the processing method selected for large contact angles. However, in the case of small contact angles, the Y-L method exhibited the smallest measurement error. An optical method allowed for measuring the contact angle of salt solutions droplets just prior to crystallization. The experiments have shown that crystalline hydrates grow near the contact line and distort the droplet profile. The contact angles of salt solution droplets were found to depend on time in a non-linear manner. Typical evaporation modes of the studied aqueous salt solutions are detected: 1 – increasing the contact diameter; 2 – pinning the droplet; 3 – formation of salt crystals (NaCl) or crystalline hydrates (LiBr, CaCl2 and LiCl).

KW - Contact angle

KW - Crystalline hydrate

KW - Desorption

KW - Evaporation mode

KW - Salt solution

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