A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method

Plant-based concrete is a construction material which, in addition to having a very low environmental impact, exhibits excellent hygrothermal comfort properties. It is a material which is, as yet, relatively unknown to engineers in the field. Therefore, an important step is to implement reliable mas...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Maroua Benkhaled, Salah-Eddine Ouldboukhitine, Amer Bakkour, Sofiane Amziane
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hemp concrete heat air and mass transfer numerical implementation finite-element method Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/444e6c35084543a39b70e270f18cf6b2
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:444e6c35084543a39b70e270f18cf6b2
record_format	dspace
spelling	oai:doaj.org-article:444e6c35084543a39b70e270f18cf6b22021-11-25T18:14:36ZA 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method10.3390/ma142269031996-1944https://doaj.org/article/444e6c35084543a39b70e270f18cf6b22021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6903https://doaj.org/toc/1996-1944Plant-based concrete is a construction material which, in addition to having a very low environmental impact, exhibits excellent hygrothermal comfort properties. It is a material which is, as yet, relatively unknown to engineers in the field. Therefore, an important step is to implement reliable mass-transfer simulation methods. This will make the material easy to model, and facilitate project design to deliver suitable climatic conditions. In recent decades, numerous studies have been carried out to develop models of the coupled transfers of heat, air and moisture in porous building envelopes. Most previous models are based on Luikov’s theory, considering mass accumulation, air and total pressure gradient. This theory considers the porous medium to be homogeneous, and therefore allows for hygrothermal transfer equations on the basis of the fundamental principles of thermodynamics. This study presents a methodology for solving the classical 1D (one-dimensional) HAM (heat, air, and moisture) hygrothermal transfer model with an implementation in MATLAB. The resolution uses a discretization of the problem according to the finite-element method. The detailed solution has been tested on a plant-based concrete. The energy and mass balances are expressed using measurable transfer quantities (temperature, water content, vapor pressure, etc.) and coefficients expressly related to the macroscopic properties of the plant-based concrete (thermal conductivity, specific heat, water vapor permeability, etc.), determined experimentally. To ensure this approach is effective, the methodology is validated on a test case. The results show that the methodology is robust in handling a rationalization of the model whose parameters are not ranked and not studied by their degree of importance.Maroua BenkhaledSalah-Eddine OuldboukhitineAmer BakkourSofiane AmzianeMDPI AGarticlehemp concreteheatair and mass transfernumerical implementationfinite-element methodTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6903, p 6903 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hemp concrete heat air and mass transfer numerical implementation finite-element method Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	hemp concrete heat air and mass transfer numerical implementation finite-element method Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Maroua Benkhaled Salah-Eddine Ouldboukhitine Amer Bakkour Sofiane Amziane A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method
description	Plant-based concrete is a construction material which, in addition to having a very low environmental impact, exhibits excellent hygrothermal comfort properties. It is a material which is, as yet, relatively unknown to engineers in the field. Therefore, an important step is to implement reliable mass-transfer simulation methods. This will make the material easy to model, and facilitate project design to deliver suitable climatic conditions. In recent decades, numerous studies have been carried out to develop models of the coupled transfers of heat, air and moisture in porous building envelopes. Most previous models are based on Luikov’s theory, considering mass accumulation, air and total pressure gradient. This theory considers the porous medium to be homogeneous, and therefore allows for hygrothermal transfer equations on the basis of the fundamental principles of thermodynamics. This study presents a methodology for solving the classical 1D (one-dimensional) HAM (heat, air, and moisture) hygrothermal transfer model with an implementation in MATLAB. The resolution uses a discretization of the problem according to the finite-element method. The detailed solution has been tested on a plant-based concrete. The energy and mass balances are expressed using measurable transfer quantities (temperature, water content, vapor pressure, etc.) and coefficients expressly related to the macroscopic properties of the plant-based concrete (thermal conductivity, specific heat, water vapor permeability, etc.), determined experimentally. To ensure this approach is effective, the methodology is validated on a test case. The results show that the methodology is robust in handling a rationalization of the model whose parameters are not ranked and not studied by their degree of importance.
format	article
author	Maroua Benkhaled Salah-Eddine Ouldboukhitine Amer Bakkour Sofiane Amziane
author_facet	Maroua Benkhaled Salah-Eddine Ouldboukhitine Amer Bakkour Sofiane Amziane
author_sort	Maroua Benkhaled
title	A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method
title_short	A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method
title_full	A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method
title_fullStr	A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method
title_full_unstemmed	A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method
title_sort	1d model for predicting heat and moisture transfer through a hemp-concrete wall using the finite-element method
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/444e6c35084543a39b70e270f18cf6b2
work_keys_str_mv	AT marouabenkhaled a1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod AT salaheddineouldboukhitine a1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod AT amerbakkour a1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod AT sofianeamziane a1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod AT marouabenkhaled 1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod AT salaheddineouldboukhitine 1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod AT amerbakkour 1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod AT sofianeamziane 1dmodelforpredictingheatandmoisturetransferthroughahempconcretewallusingthefiniteelementmethod
_version_	1718411433993043968

A 1D Model for Predicting Heat and Moisture Transfer through a Hemp-Concrete Wall Using the Finite-Element Method

Ejemplares similares