Non-isothermal Evaporation of Salt Solutions on a Microstructured Surface; Nanoscale and Microscale Thermophysical Engineering; Vol. 18, iss. 3

Chi tiết về thư mục
Parent link:Nanoscale and Microscale Thermophysical Engineering
Vol. 18, iss. 3.— 2018.— [P. 213-229]
Tác giả chính: Misyura S. Ya. Sergey Yakovlevich
Tác giả của công ty: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Tóm tắt:Title screen
Heat transfer of a droplet and layer during evaporation of aqueous solutions of salts has been studied. The behavior of salt solutions on a smooth and microstructured surface is compared here. Evaporation rate of aqueous salt solutions is greater for a microstructured surface than for a smooth wall. The behavior of heat transfer coefficient ? can be described by two time regimes: quasi-constant values of ? and significant increase in heat transfer at a multiple decrease in the liquid layer height. Measurements made with application of the particle image velocimetry showed that the structured surface increases liquid speed inside the sessile drop. The largest value of the heat transfer coefficient ? on the structured surface corresponds to water for the final stage of evaporation. For salt solutions, the heat transfer coefficient is lower than that for water in the entire period of evaporation on the structured surface. The maximal excess (20–30%) of ? of the structured wall above the smooth surface corresponds to the maximal height of the liquid layer at the beginning of evaporation. With increasing time, the excess is reduced. A drop of heat transfer intensification with a decrease in the layer height relates to suppression of free convection (a multiple decrease in the average velocity in the drop).
Ngôn ngữ:Tiếng Anh
Được phát hành: 2018
Những chủ đề:
Truy cập trực tuyến:https://doi.org/10.1080/15567265.2018.1476633
Định dạng: Điện tử Chương của sách
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660578

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