THERMAL SCIENCE

International Scientific Journal

Dmitrii O. Glushkov

,

Genii V. Kuznetsov

,

Pavel A. Strizhak

,

Roman S. Volkov

EXPERIMENTAL INVESTIGATION OF EVAPORATION ENHANCEMENT FOR WATER DROPLET CONTAINING SOLID PARTICLES IN FLAMING COMBUSTION AREA

ABSTRACT
The experimental study of integral characteristics of extinguishing liquid (water) droplet evaporation in flaming combustion area has been held. Optical methods of two-phase and heterogeneous mixtures diagnostics (“Particle Image Velocimetry” and “Interferometric Particle Imaging”) have been used for heat and mass transfer process investigation. It was established that small-size solid particles (for example, carbon particles) in droplet structure can enhance water evaporation in flame area. It was shown that the rate of evaporation process depends on concentration and sizes of solid particles in a water droplet. The correlations have been determined between the sizes of solid particles and water droplets for maximum efficiency of fire extinguishing. The physical aspects of the problem have been discussed.
KEYWORDS
water droplet, evaporation enhancement, solid particles, flame, particle image velocimetry, Interferometric Particle Imaging
PAPER SUBMITTED: 2014-09-01
PAPER REVISED: 2015-01-16
PAPER ACCEPTED: 2015-01-16
PUBLISHED ONLINE: 2015-01-24
DOI REFERENCE: https://doi.org/10.2298/TSCI140901005G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 1, PAGES [131 - 141]
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Experimental investigation of evaporation enhancement for water droplet containing solid particles in flaming combustion area

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