{"title":"Sharp Front analysis of moisture buffering","authors":"C. Hall, Gloria J. Lo, A. Hamilton","doi":"10.21809/RILEMTECHLETT.2021.136","DOIUrl":null,"url":null,"abstract":"Moisture buffering describes the use of materials with high water-vapour sorption capacity to provide humidity control \nin interior spaces. Established models of the moisture dynamics of buffering are derived from conventional Fickian vapour-diffusion \nequations. We describe an alternative analysis using a Sharp-Front formulation. This yields a similar expression for the \nmoisture effusivity, several consistent scalings and a new definition of the moisture penetration depth. Features of the model are compared with \nsome published experimental data. A new sorption buffer index is a measurable experimental property that describes the water-vapour \nbuffer strength of the material.","PeriodicalId":36420,"journal":{"name":"RILEM Technical Letters","volume":" ","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"RILEM Technical Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21809/RILEMTECHLETT.2021.136","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 2
Abstract
Moisture buffering describes the use of materials with high water-vapour sorption capacity to provide humidity control
in interior spaces. Established models of the moisture dynamics of buffering are derived from conventional Fickian vapour-diffusion
equations. We describe an alternative analysis using a Sharp-Front formulation. This yields a similar expression for the
moisture effusivity, several consistent scalings and a new definition of the moisture penetration depth. Features of the model are compared with
some published experimental data. A new sorption buffer index is a measurable experimental property that describes the water-vapour
buffer strength of the material.