How to improve efficiency of using water when extinguishing fires through the explosive breakup of drops in a flame: Laboratory and field tests; International Journal of Thermal Sciences; Vol. 121

Bibliographic Details
Parent link:	International Journal of Thermal Sciences Vol. 121.— 2017.— [P. 398-409]
Main Author:	Kuznetsov G. V. Geny Vladimirovich
Corporate Authors:	Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Кафедра автоматизации теплоэнергетических процессов (АТП), Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Кафедра теоретической и промышленной теплотехники (ТПТ), Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Лаборатория фундаментальных основ ресурсоэффективных и безопасных технологий тушения лесных пожаров с применением авиации (ЛФОРиБТТЛППА)
Other Authors:	Piskunov M. V. Maksim Vladimirovich, Strizhak P. A. Pavel Alexandrovich
Summary:	Title screen The study reports results of the experimental research on the explosive breakup of heterogeneous water drops in high-temperature (800-1200 K) conditions typical for fires. The temperature of heating conforms to mean values for large forest fires. We use water drops containing special-purpose inclusions, such as 1-3 mm solid opaque particles (natural graphite). Laboratory experiments enable us to define conditions for the intensive fragmentation of such the drops. This process is characterized by formation of droplets of smaller size. The number of fragments can be from several ones to several hundreds. As a result, the evaporation surface area of liquid increases 3-15-fold during such the fragmentation. This effect is important for the most complete water evaporation in a flame during the fire extinguishing process. In such a case, the maximum temperature reduction in a flame zone becomes possible by absorption of heat of phase change. Field tests show that the usage of suspensions based on water facilitates a dramatic drop in temperature in a flame zone by 40-70 K as compared to water without additives. Consequently, fire extinguishing occurs during shorter time and by using smaller volume of water. Both the characteristics can decrease by 30-40 % as compared to water without additives. Режим доступа: по договору с организацией-держателем ресурса
Language:	English
Published:	2017
Subjects:	электронный ресурс труды учёных ТПУ капли вода испарение высокотемпературные газы high temperature gases flame heterogeneous water drop explosive fragmentation evaporation fire extinguishing огнетушащие вещества
Online Access:	https://doi.org/10.1016/j.ijthermalsci.2017.08.004
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655521