Evaporation and boiling crisis of droplets alcohol solution

S. Y. Misyura, V. S. Morozov

Результат исследований: Материалы для журнала

Аннотация

Evaporation and boiling crisis of droplets ethanol aqueous solution were studied experimentally. The evaporation intensity depends on the nucleate boiling, solution diffusion, a change in physical characteristics with time and droplet interfacial surface area. At nucleate boiling in a droplet, most evaporation relates to a growth in the droplet surface area and only 20 % relates to the diffusion effect and a variation in the thermophysical coefficients. At boiling crisis, experimental dependence for vapor layer height on overheating was observed. At Leidenfrost temperature, the height of the vapor layer was many times higher than the surface microroughness value of the wall. There are oscillates of liquid-vapor interface, and this increases the transitional temperature range associated with a boiling crisis of droplets.

Язык оригиналаАнглийский
Номер статьи01059
ЖурналMATEC Web of Conferences
Том110
DOI
СостояниеОпубликовано - 19 июн 2017
Опубликовано для внешнего пользованияДа
СобытиеInternational Youth Scientific Conference on Heat and Mass Transfer in the Thermal Control System of Technical and Technological Energy Equipment, HMTTSC 2017 - Tomsk, Российская Федерация
Продолжительность: 26 апр 201728 апр 2017

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Engineering(all)

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