Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis

Microwave drying of suspensions of lignocellulosic fibers has the potential to produce porous foam materials that can replace materials such as expanded polystyrene, but the design and control of this drying method are not well understood. The main objective of this study was to develop a microwave...

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Autores principales:	Mohammad Tauhiduzzaman, Islam Hafez, Douglas Bousfield, Mehdi Tajvidi
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	microwave drying microwave heating finite element (FE) cellulose nanofibrils (CNFs) heat transfer porous foam Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/9a7147eb01eb4783a0f5b827611a21d5
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spelling	oai:doaj.org-article:9a7147eb01eb4783a0f5b827611a21d52021-11-25T18:51:22ZModeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis10.3390/pr91120012227-9717https://doaj.org/article/9a7147eb01eb4783a0f5b827611a21d52021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/2001https://doaj.org/toc/2227-9717Microwave drying of suspensions of lignocellulosic fibers has the potential to produce porous foam materials that can replace materials such as expanded polystyrene, but the design and control of this drying method are not well understood. The main objective of this study was to develop a microwave drying model capable of predicting moisture loss regardless of the shape and microwave power input. A microwave heating model was developed by coupling electromagnetic and heat transfer physics using a commercial finite element code. The modeling results predicted heating time behavior consistent with experimental results as influenced by electromagnetic fields, waveguide size and microwave power absorption. The microwave heating modeling accurately predicted average temperature increase for <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>100</mn><msup><mrow><mrow><mo> </mo><mi>cm</mi></mrow></mrow><mn>3</mn></msup></mrow></semantics></math></inline-formula> water domain at 360 and 840 W microwave power inputs. By dividing the energy absorption by the heat of vaporization, the amount of water evaporation in a specific time increment was predicted leading to a novel method to predict drying. Using this method, the best time increments, and other parameters were determined to predict drying. This novel method predicts the time to dry cellulose foams for a range of sample shapes, parameters, material parameters. The model was in agreement with the experimental results.Mohammad TauhiduzzamanIslam HafezDouglas BousfieldMehdi TajvidiMDPI AGarticlemicrowave dryingmicrowave heatingfinite element (FE)cellulose nanofibrils (CNFs)heat transferporous foamChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 2001, p 2001 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	microwave drying microwave heating finite element (FE) cellulose nanofibrils (CNFs) heat transfer porous foam Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	microwave drying microwave heating finite element (FE) cellulose nanofibrils (CNFs) heat transfer porous foam Chemical technology TP1-1185 Chemistry QD1-999 Mohammad Tauhiduzzaman Islam Hafez Douglas Bousfield Mehdi Tajvidi Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis
description	Microwave drying of suspensions of lignocellulosic fibers has the potential to produce porous foam materials that can replace materials such as expanded polystyrene, but the design and control of this drying method are not well understood. The main objective of this study was to develop a microwave drying model capable of predicting moisture loss regardless of the shape and microwave power input. A microwave heating model was developed by coupling electromagnetic and heat transfer physics using a commercial finite element code. The modeling results predicted heating time behavior consistent with experimental results as influenced by electromagnetic fields, waveguide size and microwave power absorption. The microwave heating modeling accurately predicted average temperature increase for <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>100</mn><msup><mrow><mrow><mo> </mo><mi>cm</mi></mrow></mrow><mn>3</mn></msup></mrow></semantics></math></inline-formula> water domain at 360 and 840 W microwave power inputs. By dividing the energy absorption by the heat of vaporization, the amount of water evaporation in a specific time increment was predicted leading to a novel method to predict drying. Using this method, the best time increments, and other parameters were determined to predict drying. This novel method predicts the time to dry cellulose foams for a range of sample shapes, parameters, material parameters. The model was in agreement with the experimental results.
format	article
author	Mohammad Tauhiduzzaman Islam Hafez Douglas Bousfield Mehdi Tajvidi
author_facet	Mohammad Tauhiduzzaman Islam Hafez Douglas Bousfield Mehdi Tajvidi
author_sort	Mohammad Tauhiduzzaman
title	Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis
title_short	Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis
title_full	Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis
title_fullStr	Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis
title_full_unstemmed	Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis
title_sort	modeling microwave heating and drying of lignocellulosic foams through coupled electromagnetic and heat transfer analysis
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9a7147eb01eb4783a0f5b827611a21d5
work_keys_str_mv	AT mohammadtauhiduzzaman modelingmicrowaveheatinganddryingoflignocellulosicfoamsthroughcoupledelectromagneticandheattransferanalysis AT islamhafez modelingmicrowaveheatinganddryingoflignocellulosicfoamsthroughcoupledelectromagneticandheattransferanalysis AT douglasbousfield modelingmicrowaveheatinganddryingoflignocellulosicfoamsthroughcoupledelectromagneticandheattransferanalysis AT mehditajvidi modelingmicrowaveheatinganddryingoflignocellulosicfoamsthroughcoupledelectromagneticandheattransferanalysis
_version_	1718410662710870016

Modeling Microwave Heating and Drying of Lignocellulosic Foams through Coupled Electromagnetic and Heat Transfer Analysis

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