| Issue |
MATEC Web Conf.
Volume 86, 2016
5th International Scientific Conference “Integration, Partnership and Innovation in Construction Science and Education”
|
|
|---|---|---|
| Article Number | 04056 | |
| Number of page(s) | 7 | |
| Section | 4 Building materials and Technologies | |
| DOI | https://doi.org/10.1051/matecconf/20168604056 | |
| Published online | 28 November 2016 | |
Influence of dispersion degree of water drops on efficiency of extinguishing of flammable liquids
1 Moscow State University of Civil Engineering, 129337, Moscow, Yaroslavskoye sh., 26, Russia
2 Transneft Research Institute for Oil and Oil Products Transportation (Transneft R&D, LLC), 117186, Moscow, Sevastopolskiy prospect, 47A, Russia
* Corresponding author: da-vip@mail.ru
Depending on the size of water drops, process of fire extinguishing is focused either in a zone of combustion or on a burning liquid surface. This article considers two alternate solutions of a heat balance equation. The first solution allows us to trace decrease of temperature of a flammable liquid (FL) surface to a temperature lower than fuel flash point at which combustion is stopped. And the second solution allows us to analyze decrease of burnout rate to a negligible value at which steam-air mixture becomes nonflammable. As a result of solve of a heat balance equation it was made the following conclusion: water drops which size is equal to 100 μm will completely evaporate in a zone of combustion with extent of 1 m if the flying speed of drops is even 16 mps (acc. to Stokes v = 3 mps); whereas drops of larger size will evaporate only partially.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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