Abstract
Evaporation and heat transfer of the layers of water and aqueous salt solutions (H2O/LiBr, H2O/CaCl2, H2O/LiCl) have been studied experimentally. Evaporation rate is greater for a structured wall than for a smooth one. When simulating droplet evaporation and heat transfer, it is necessary to take into account free convection of air and vapor. There is a change of the heat transfer coefficient for salt solutions layers on the structured surface with the presence of an extremum. The largest value of the heat transfer coefficient α on the structured surface corresponds to water for the final stage of evaporation. For salt solutions, α is lower than that of water. The maximum excess of heat transfer coefficient of micro-structured wall above the smooth wall (20–25%) corresponds to the maximum height of the liquid layer for the initial period of evaporation. With increasing time, the excess is reduced.
| Original language | English |
|---|---|
| Pages (from-to) | 7-11 |
| Number of pages | 5 |
| Journal | International Communications in Heat and Mass Transfer |
| Volume | 96 |
| DOIs | |
| Publication status | Published - 1 Aug 2018 |
Fingerprint
Keywords
- Aqueous salt solution
- Evaporation rate
- Heat transfer coefficient
- Structured surface
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Chemical Engineering(all)
- Condensed Matter Physics
Cite this
Heat transfer of aqueous salt solutions during evaporation on a structured heated wall. / Misyura, S. Y.
In: International Communications in Heat and Mass Transfer, Vol. 96, 01.08.2018, p. 7-11.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Heat transfer of aqueous salt solutions during evaporation on a structured heated wall
AU - Misyura, S. Y.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - Evaporation and heat transfer of the layers of water and aqueous salt solutions (H2O/LiBr, H2O/CaCl2, H2O/LiCl) have been studied experimentally. Evaporation rate is greater for a structured wall than for a smooth one. When simulating droplet evaporation and heat transfer, it is necessary to take into account free convection of air and vapor. There is a change of the heat transfer coefficient for salt solutions layers on the structured surface with the presence of an extremum. The largest value of the heat transfer coefficient α on the structured surface corresponds to water for the final stage of evaporation. For salt solutions, α is lower than that of water. The maximum excess of heat transfer coefficient of micro-structured wall above the smooth wall (20–25%) corresponds to the maximum height of the liquid layer for the initial period of evaporation. With increasing time, the excess is reduced.
AB - Evaporation and heat transfer of the layers of water and aqueous salt solutions (H2O/LiBr, H2O/CaCl2, H2O/LiCl) have been studied experimentally. Evaporation rate is greater for a structured wall than for a smooth one. When simulating droplet evaporation and heat transfer, it is necessary to take into account free convection of air and vapor. There is a change of the heat transfer coefficient for salt solutions layers on the structured surface with the presence of an extremum. The largest value of the heat transfer coefficient α on the structured surface corresponds to water for the final stage of evaporation. For salt solutions, α is lower than that of water. The maximum excess of heat transfer coefficient of micro-structured wall above the smooth wall (20–25%) corresponds to the maximum height of the liquid layer for the initial period of evaporation. With increasing time, the excess is reduced.
KW - Aqueous salt solution
KW - Evaporation rate
KW - Heat transfer coefficient
KW - Structured surface
UR - http://www.scopus.com/inward/record.url?scp=85048291414&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85048291414&partnerID=8YFLogxK
U2 - 10.1016/j.icheatmasstransfer.2018.05.015
DO - 10.1016/j.icheatmasstransfer.2018.05.015
M3 - Article
AN - SCOPUS:85048291414
VL - 96
SP - 7
EP - 11
JO - International Communications in Heat and Mass Transfer
JF - International Communications in Heat and Mass Transfer
SN - 0735-1933
ER -