Study of the resistances to transfer of gaseous pollutant between material and indoor air
| Autor: | Anne Lise Tiffonnet, Michaël Marion, Rachid Makhloufi, Alina Santa-Cruz |
|---|---|
| Přispěvatelé: | Laboratoire de combustion et systèmes reactifs (LCSR), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Laboratoire Universitaire des Sciences Appliquées de Cherbourg (LUSAC), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Convection
Environmental Engineering Materials science 010504 meteorology & atmospheric sciences Geography Planning and Development 010501 environmental sciences 01 natural sciences [SPI.MAT]Engineering Sciences [physics]/Materials [SPI]Engineering Sciences [physics] Mass transfer Volatile organic compounds Diffusion (business) Composite material Porosity ComputingMilieux_MISCELLANEOUS 0105 earth and related environmental sciences Civil and Structural Engineering Mass transfer coefficient Pollutant [PHYS]Physics [physics] [SDE.IE]Environmental Sciences/Environmental Engineering [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment Environmental engineering Sorption Building and Construction Boundary layer 13. Climate action Air quality [SDE]Environmental Sciences Water vapor |
| Zdroj: | Building and Environment Building and Environment, Elsevier, 2011, 46 (2), pp.356-362. ⟨10.1016/j.buildenv.2010.07.029⟩ |
| ISSN: | 0360-1323 |
| DOI: | 10.1016/j.buildenv.2010.07.029⟩ |
| Popis: | International audience; The main parameters which control the emission of volatile organic compounds between wall materials and indoor air were examined. A physically based model considers that the global emission phenomenon results from three elementary physical phenomena: diffusion through the boundary layer separating the wall from environment, diffusion within the porous network of the materials, and sorption of the gas molecules on the active sites of the materials. The pollutant transfer between porous material and air is therefore subjected to two complementary resistances and we identify first the resistance which controls the transfer. Then, we predict the global emission time constant from the mass transfer coefficient of convection and the thickness of the material. Experimental results from a small scale chamber are compared to predicted values in the case of acetone emission from chipboard in humid air and for high initial acetone concentration. Good agreement is obtained at the beginning of emission but an acetone retention effect by chipboard is observed, showing that it will be necessary to take into account the interactions of water vapor with materials and the pollutants to achieve accurate modeling of the material VOC emission process. |
| Databáze: | OpenAIRE |
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