Dataset for validating 1-D heat and mass transfer models within building walls with hygroscopic materials

Rafidiarison, Helisoa; Rémond, René; Mougel, Éric

doi:10.1016/j.buildenv.2015.03.008

Cited by 48 publications

(41 citation statements)

References 20 publications

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“…These requirements gave rise to several experimental and theoretical works intended to deeply describe the effects of coupled heat and mass transfer in hygroscopic materials. These works are performed at the scales of wall assembly or building envelope (Labat et al, 2015;Rafidiarison et al, 2015;Zhang et al, 2017;Rouchier et al, 2017) These new requirement of building simulation are likely to benefit from the mature domain of drying and processing of hygroscopic materials (Perré, 2010;Perré et al, 2013). With the increasing performances of the building envelops, accurate characterization of building materials in terms of heat and mass transfer is crucial.…”

Section: Introductionmentioning

confidence: 99%

Heat and moisture diffusion in spruce and wood panels computed from 3-D morphologies using the Lattice Boltzmann method

Louërat

Ayouz

Perré

2018

International Journal of Thermal Sciences

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In this paper, the Lattice Boltzmann method is used to simulate heat and mass diffusion in bio-based building materials. The numerical method is presented and the methodology developed to reduce the calculation time is described. The 3-D morphologies of spruce and wood fibers are obtained using synchrotron X-ray micro-tomography. Equivalent macroscopic properties (heat conductivity and mass diffusivity) are therefore determined from the real micro-structure of the materials. The results reveal the anisotropy of the studied materials. The computed equivalent heat conductivity varies from 0.036 W m −1 K −1 to 0.52 W m −1 K −1 and the computed dimensionless mass diffusivity varies from 0.0088 to 0.78 depending on the materials and on the diffusion directions. Using these results, morphology families are identified and simple expressions are proposed to predict the equivalent properties as a function of phase properties and solid fraction.

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Section: Introductionmentioning

confidence: 99%

Heat and moisture diffusion in spruce and wood panels computed from 3-D morphologies using the Lattice Boltzmann method

Louërat

Ayouz

Perré

2018

International Journal of Thermal Sciences

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“…In that paper, hygrothermal properties of wood-based products were measured, including the sorption isotherm and vapour permeability of wood-fibre insulation. In the four years since that publication, these results have been referenced frequently [2][3][4][5][6][7][8][9][10][11]. The present author contends though that the study in [1] contains flaws in the measurement, calculation and presentation of the vapour permeability of woodfibre insulation.…”

Section: Introductionmentioning

confidence: 84%

A discussion of “Characterization of hygrothermal properties of wood-based products – Impact of moisture content and temperature”

Janssen

2018

Construction and Building Materials

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In 2014, this journal published the paper "Characterization of hygrothermal properties of woodbased products -Impact of moisture content and temperature", presenting among others the vapour permeability of wood-fibre insulation. This discussion demonstrates that the measurement, the calculation and the presentation of this vapour permeability has suffered from various errors, invalidating the obtained intrinsic vapour permeabilities of wood-fibre insulation. This discussion moreover demonstrates that several subsequent authors have furthermore misinterpreted their air-gap-corrected vapour permeabilities as intrinsic vapour permeabilities, which in turn invalidates, at least in part, these authors' challenges to the state-of-the-art on the measurement and simulation of hygroscopic moisture transport in porous materials.

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“…Wood fibre is made essentially from wood, which representing a high hygroscopic properties. Wood fibre allows moderation of ambient relative humidity (RH), as it has been demonstrated by Rafidiarison et al [19]. Several authors in their work focus on wood fibre properties, and attempts to characterize the material, in the literature we found the works: Vololonirina et al [20] and Limam et al [21].…”

Section: Wood Fibrementioning

confidence: 95%

Numerical and experimental investigation of heat and mass transfer within bio-based material

et al. 2019

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In this paper, the coupled heat and mass transfer within porous media has been studies. First, the studied materials have been characterized experimentally and than evaluated their thermal properties, namely thermal conductivity and specific heat in different states (dry-wet). The hygroscopic properties, namely water vapour permeability, water vapour sorption. At second time, we present and validate the mathematical model describing heat and mass transfer within bio-based materials, by the confrontation with the experimental results. The materials properties obtained from the characterisation part are used as model's input parameters. Moreover, a test facility is mounted in the laboratory in order to compare the numerical and experimental data. The founded results show a good concordance between the simulated and measured data. According to this results the mathematical model of Philip and de Vries gives a good prediction of hygrothermal behaviour of biobased material. This model will allow us to save money and time of the experimental part in the future.

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Dataset for validating 1-D heat and mass transfer models within building walls with hygroscopic materials

Cited by 48 publications

References 20 publications

Heat and moisture diffusion in spruce and wood panels computed from 3-D morphologies using the Lattice Boltzmann method

Heat and moisture diffusion in spruce and wood panels computed from 3-D morphologies using the Lattice Boltzmann method

A discussion of “Characterization of hygrothermal properties of wood-based products – Impact of moisture content and temperature”

Numerical and experimental investigation of heat and mass transfer within bio-based material

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