Evaporation and boiling crisis of droplets alcohol solution

S. Y. Misyura, V. S. Morozov

Research output: Contribution to journalConference article

Abstract

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.

Original languageEnglish
Article number01059
JournalMATEC Web of Conferences
Volume110
DOIs
Publication statusPublished - 19 Jun 2017
Externally publishedYes
EventInternational Youth Scientific Conference on Heat and Mass Transfer in the Thermal Control System of Technical and Technological Energy Equipment, HMTTSC 2017 - Tomsk, Russian Federation
Duration: 26 Apr 201728 Apr 2017

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ASJC Scopus subject areas

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

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