Modelowanie wpływu histerazy na przepływ masy w materiałach budowlanych

• Autorzy: Kwiatkowski J. , Wołoszyn M. , Roux J.-J.

Warianty tytułu

EN

Modelling hysteresis influence on mass transfer in building material

• Języki publikacji: PL

Abstrakty

PL

Procesy przepływu masy w materiale mają wpływ nie tylko na sam materiał ale również na warunki panujące w pomieszczeniach z nim sąsiadujacych. Opisany tutaj zostanie model transportu pary wodnej w materiale budowlanym. Po walidacji wprowadzony do niego zostanie model histerezy sorpcji. Ostatecznie zaprezentowane zostanie porównanie wyników symulacji przepływu masy w materiale dla modelu bez i z histerazą.

EN

The relative humidity is one of the most important parameters which have influence on the human comfort and indoor air quality. Moisture can also initiate microbiological growth at the surface of building envelope. The mass flows in the material have influence not only at material by itself but also at the indoor relative humidity level. The model of water vapour transfer in bulding material is presented in this work. After validation the effect of sorption hysteresis is implemented into the cod. Finally the comparison of simulation results for model with and without hysteresis effect is presented.

Słowa kluczowe

PL

histeraza; przepływ masy; wilgotność; modelowanie

EN

hysteresis; humidity; modeling; influence on mass

• Wydawca: Instytut Fizyki Budowli Katarzyna i Piotr Klemm S.C.
• Czasopismo: Fizyka Budowli w Teorii i Praktyce
• Rocznik: 2007
• Tom: T. 2
• Strony: 169--174
• Opis fizyczny: Bibliogr. 8 poz., tab., wykr.

Twórcy

autor

Kwiatkowski J.

autor

Wołoszyn M.

autor

Roux J.-J.

• CETHIL, UMR5008, CNRS, INSA-Lyon, Universite Lyon 1, F-69621 Villeurbanne Cedex, France,

Bibliografia

• [1] Carmelit J., de Wit M., Jansen H. Hysteresis and Moisture Buffering of Wood. 7th Nordic Symposium on Building Physics, Reykjavik 12-15 of June, 2005
• [2] Frandsen H. L. Modelling of Moisture Transport in Wood. Wood Science and Timber Engineering, Paper no l, 2nd ed., ISSN 1395-7953 R0502. Department of Building Technology and Structural Engineering, Aalborg University, March 2005
• [3] James C., Talukdar P., Simonson J. C. Annex 41 Sub-task 2. Common Exercise: Modelling Exercise on Transient Heat and Moisture Transfer in a Bed of Gypsum Boards (Phase 1). Results. Annex 41 Working meeting, Lyon 25-27 October, 2006
• [4] James C., Talukdar P., Simonson J. C. Annex 41 Sub-task 2. Common Exercise: Modelling Exercise on Transient Heat and Moisture Transfer in a Bed of Gypsum Boards (Phase 2). Annex 41 Working meeting, Lyon 25-27 October, 2006
• [5] Padfield T. Humidity buffering of the indoor climate by absorbent walls [on line]. Proceedings of the 5th Symposium on Building Physics in Nordic Countries. Chalmers University of Technology, Goteborg 1999, vol.2 pp 637-644. Pdf available at: http://www.padField.org/tim/cfys/appx/pubs.php
• [6] Pedersen C.R. Combined Heat and Moisture Transfer in Building Constructions. PhD Thesis. Report 214. Thermal Insulation Laboratory, Technical University of Denmark, 1990
• [7] Pedersen C.R. Transient Calculation on Moisture Migration Using a Simplified Description of Hysteresis in the Sorption Isotherms. The 2nd Symposium on Building Physics in the Nordic Countries, Trondheim 20-22 of August, 1990
• [8] Talukdar P., JamesC., Simonson J. C. Annex 41 Sub-task 2. Common Exercise: Modelling Exercise on Transient Heat and Moisture Transfer in a Bed of Gypsum Boards (Phase 1). Annex 41 Working meeting, Kyoto 3-5 April, 2006