Experimental Research of Moisture Evaporation Process from Biomass in a Drying Chamber

Bulba, E.E.; Malinovsky, A.A.

doi:10.1051/matecconf/20152301053

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…This evaporation rate equation was given in [52]. The procedure of defining values and some typical values of the biomass accommodation coefficient were presented in [53][54][55].…”

Section: Methodsmentioning

confidence: 99%

Mathematical Simulation of Forest Fuel Pyrolysis and Crown Forest Fire Impact for Forest Fire Danger and Risk Assessment

Baranovskiy

Kirienko

2022

Processes

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In order to predict and assess the danger from crown forest fires, it is necessary to study the thermal degradation of different forest fuels in a high-temperature environment. In this paper, the main characteristics of pyrolysis accompanied by moisture evaporation in a foliage sample of angiosperms (birch) were investigated within conditions typical for a crown forest fire. The heat and mass transfer in the forest fuel element is described by the system of non-stationary non-linear heat conduction equations with corresponding initial and boundary conditions. The considered problem is solved within the framework of the three-dimensional statement by the finite difference method. The locally one-dimensional method was used to solve three-dimensional equations for heat conduction. The simple iteration method was applied to solve nonlinear effects caused by the forest fuel pyrolysis and moisture evaporation. The fourth kind of boundary conditions are applicable at the interface between the sub-areas. Software implementation of the mathematical model is performed in the high-level programming language Delphi in the RAD Studio software. The characteristic changes in the sample temperature field and the phase composition under high-temperature exposure from a forest fire are presented. The induction period of the thermal decomposition of dry organic matter in the sample was determined. Recommendations are made about key features of accounting for the pyrolysis and evaporation processes when predicting forest fire danger. The research results can be used in the development and improvement of systems for predicting forest fire danger and environmental consequences of the forest fires.

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“…This evaporation rate equation was given in [52]. The procedure of defining values and some typical values of the biomass accommodation coefficient were presented in [53][54][55].…”

Section: Methodsmentioning

confidence: 99%

Mathematical Simulation of Forest Fuel Pyrolysis and Crown Forest Fire Impact for Forest Fire Danger and Risk Assessment

Baranovskiy

Kirienko

2022

Processes

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“…As a result, the critical heat occurs, fluxes from the inner bark to surface area, leads to high temperatures, and ignites the tree. The wood moisture content influence [22] on the ignition is neglected.…”

Section: Physical and Mathematical Statementmentioning

confidence: 99%

Mathematical Computing of Coniferous Tree Ignition by the Cloud-to-Ground Lightning Discharge using Joule-Lenz's Law

Baranovskiy

Кузнецов

Nemova

2017

IJECE

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The natural phenomenon of thunderstorm activity is one of many causes of a forest fire. Thunderstorms cause especially intensive fire danger situations within remote areas and highlands. As a rule, a cloud-to-ground lightning discharge is the fire source. The present study is based on the research results of electrical overloads in supply networks. Physical and mathematical formulation and numerical solution for the problem of a coniferous tree (pine) ignited by a cloud-to-ground lightning discharge are presented. The problem is considered in a cylindrical coordinate system in two-dimensional formulation. The features of current passage and heat transfer taking into account the reactive wood localization are investigated. The Joule-Lenz’s law is used to calculate heat production in a tree trunk. Parametric analysis has been conducted and tree trunk ignition conditions have been determined in a typical range for the influencing parameters of negative and positive discharges.

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“…Cylindrical cyclone chambers are used as technological devices for burning, melting, drying, high-temperature reactions [1][2][3][4][5][6][7], they are used as dust concentrators in gas cleaning systems [8,9], in installations of dust removal of air of systems of aspirations [10,11]. Technical characteristics on devices are efficiency of dust removal of gases, coefficient of hydraulic resistance of the device which causes the capacity of the purified gas.…”

Section: Introductionmentioning

confidence: 99%

The characteristic and separation effects in a cylindrical cyclone dust collector

et al. 2017

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Experimental Research of Moisture Evaporation Process from Biomass in a Drying Chamber

Cited by 7 publications

References 3 publications

Mathematical Simulation of Forest Fuel Pyrolysis and Crown Forest Fire Impact for Forest Fire Danger and Risk Assessment

Mathematical Simulation of Forest Fuel Pyrolysis and Crown Forest Fire Impact for Forest Fire Danger and Risk Assessment

Mathematical Computing of Coniferous Tree Ignition by the Cloud-to-Ground Lightning Discharge using Joule-Lenz's Law

The characteristic and separation effects in a cylindrical cyclone dust collector

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