Experimental investigation of the processes of dehumidification of coniferous biomass

Bulba, E.E.; Иванова, Н. Л.

doi:10.1051/matecconf/201714101014

Cited by 3 publications

(5 citation statements)

References 9 publications

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Section: R T R T R R R T R T T R R P R P раsupporting

confidence: 82%

“…It should be noted that the results of mathematical modeling correlate well with known (published earlier) experimental data [20]. The drying time established in experiments [20] (under conditions of natural convection) is 9600 seconds. The moisture content of the wood preform was φ≈40%, the temperatures in the drying chamber varied [20] in the range from 333 to 413 K.…”

Section: R T R T R R R T R T T R R P R P раsupporting

confidence: 82%

“…The drying time established in experiments [20] (under conditions of natural convection) is 9600 seconds. The moisture content of the wood preform was φ≈40%, the temperatures in the drying chamber varied [20] in the range from 333 to 413 K.…”

Section: R T R T R R R T R T T R R P R P раmentioning

confidence: 99%

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Mathematical modeling of processes of heat and mass transfer during drying of wood biomass

Иванова

Bulba

2018

MATEC Web Conf.

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For the first time, a mathematical model for the drying of woody biomass during conductive heating with localization of the evaporation front has been formulated. The processes of moisture removal during the filtration of steam through the porous structure of the material at an ambient temperature of Te = 373 K were considered. Humidity was varied (in the range from 6% to 40%) and dimensions of wood blanks (Rd = 0.0035 - 0.035 m). Based on the results of numerical simulation, the conditions and characteristics (evaporation rate Wisp, drying time τ dry) of the process of moisture removal from wood biomass are determined. The mathematical model allows to calculate the drying time, as well as the mass evaporation rate for different sizes of wood sample, humidity and temperature conditions.

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Section: R T R T R R R T R T T R R P R P раsupporting

confidence: 82%

Section: R T R T R R R T R T T R R P R P раsupporting

confidence: 82%

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Mathematical modeling of processes of heat and mass transfer during drying of wood biomass

Иванова

Bulba

2018

MATEC Web Conf.

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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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“…In another state it is in the form of deposits or is a bulk body. Agglomerates are formed as a result of turbulent coagulation, when disrupting the flow of deposits from surfaces [1], when handling materials, with segregation of particles as a result of its transport to different devices [2,3]. In the cyclone itself, migratory-turbulent and gradient near-wall agglomerations are significant.…”

Section: Introductionmentioning

confidence: 99%

The modeling of the dust deposits on the surfaces of cyclone scrubber

et al. 2018

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Abstract. The phenomena at interaction of agglomerate of disperse material with the surface of the inertial device are considered. It is revealed that tension in the interactions between the agglomerate surface can reach values comparable to atmospheric pressure, which is the reason for the formation of solid deposits, what is the reason of formation of strong deposits which, in turn, are defined by the autohesion communications of particles forming agglomerate.

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Experimental investigation of the processes of dehumidification of coniferous biomass

Cited by 3 publications

References 9 publications

Mathematical modeling of processes of heat and mass transfer during drying of wood biomass

Mathematical modeling of processes of heat and mass transfer during drying of wood biomass

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

The modeling of the dust deposits on the surfaces of cyclone scrubber

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