Movement of water drops in a forest fuel layer in the course of its thermal decomposition; Thermal Science; Vol. 22, iss. 1

Movement of water drops in a forest fuel layer in the course of its thermal decomposition; Thermal Science; Vol. 22, iss. 1

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Parent link:Thermal Science.— , 2002-
Vol. 22, iss. 1.— 2018.— [P. 301-312]
Hlavní autor: Volkov R. S. Roman Sergeevich
Korporace: Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова), Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Další autoři: Kuznetsov G. V. Geny Vladimirovich, Strizhak P. A. Pavel Alexandrovich
Shrnutí:Title screen
In this paper, we conducted an experimental investigation on water droplets gravitating in a layer of typical forest fuel (as illustrated by pine needle litter) in the course of its thermal decomposition. We used a high-speed (200 fps) video recording system, Tema Automotive software with continuous tracking of a moving object as well as a set of low-inertia (no more than 0.1 s) thermocouples. Similar experiments were performed at moderate temperatures (below the onset temperature of forest fuel pyrolysis, i.e. about 300 K). Two approaches were used: continuous tracking of a moving water droplet using high-speed video recording; and registration of a droplet path using the readings of thermocouples placed at different levels in a forest fuel (FF) layer. We determined the typical depths of an FF layer that water droplets reach with the initial volume of these droplets ranging from 90 to 900 ?L. The typical velocities of water droplets were calculated at different depths of the FF layer. We also determined the share of the mass of water spent in an FF layer on evaporation and cooling of the material down to the temperatures below those of thermal decomposition. Finally, we identified the physical processes influencing water droplets moving through the layers of forest fuel heated up to the high temperatures similar to those of thermal decomposition.
Jazyk:angličtina
Vydáno: 2018
Témata:
электронный ресурс
труды учёных ТПУ
лесной покров
термическое разложение
пиролиз
капля
вода
проникновение
On-line přístup:https://doi.org/10.2298/TSCI160818110V
Médium: Elektronický zdroj Kapitola
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=657782

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