Prediction of Moisture Diffusivity of Ceramic Bricks From Pore Size Distribution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00371823" target="_blank" >RIV/68407700:21110/23:00371823 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/5.0146737" target="_blank" >http://dx.doi.org/10.1063/5.0146737</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0146737" target="_blank" >10.1063/5.0146737</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Prediction of Moisture Diffusivity of Ceramic Bricks From Pore Size Distribution

Popis výsledku v původním jazyce

The Boltzmann-Matano method is a standard approach to determine the moisture diffusivity as a function of the moisture content. It is based on using the moisture profile whose measurement is a time consuming process. Alternatively, moisture transport parameters, including the moisture diffusivity, can be predicted from models that use pore distribution curves that are much easier to measure. In this paper we calculate the moisture diffusivity for two samples of a ceramic brick by both methods, using the Burdine model to determine the diffusivity from the pore curves. We then assess whether the approach using pore curves has the potential to become a reliable alternative for the prediction of varying moisture diffusivities of porous materials. We show that this might be a promising technique, although there are some problems that need to be resolved. Namely, the prediction of the diffusivity fails at low and large moisture contents. In addition, an independent determination of the diffusivity at a single value of the moisture content is required.

Název v anglickém jazyce

Prediction of Moisture Diffusivity of Ceramic Bricks From Pore Size Distribution

Popis výsledku anglicky

The Boltzmann-Matano method is a standard approach to determine the moisture diffusivity as a function of the moisture content. It is based on using the moisture profile whose measurement is a time consuming process. Alternatively, moisture transport parameters, including the moisture diffusivity, can be predicted from models that use pore distribution curves that are much easier to measure. In this paper we calculate the moisture diffusivity for two samples of a ceramic brick by both methods, using the Burdine model to determine the diffusivity from the pore curves. We then assess whether the approach using pore curves has the potential to become a reliable alternative for the prediction of varying moisture diffusivities of porous materials. We show that this might be a promising technique, although there are some problems that need to be resolved. Namely, the prediction of the diffusivity fails at low and large moisture contents. In addition, an independent determination of the diffusivity at a single value of the moisture content is required.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20504 - Ceramics

Projekt

<a href="/cs/project/GA20-01536S" target="_blank" >GA20-01536S: Řízená modifikace mineralogického složení keramického střepu za účelem zlepšení jeho užitných vlastností</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Central European Symposium on Thermophysics 2022 (CEST 2022)

ISBN

—

ISSN

1551-7616

e-ISSN

1551-7616

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

AIP Conference Proceedings

Místo vydání

New York

Místo konání akce

Olomouc

Datum konání akce

31. 8. 2022

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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