Assessment Method of Numerical Prediction Models for Combined Heat,Air and Moisture Transfer in Building Components: Benchmarks for One-dimensional Cases

Abstract

The standardised Glaser method for calculation, prediction and evaluation of moisture performance is considered as rarely applicable. The present state of knowledge, analytical as well as experimental, concerning heat, air and moisture demands updating of standards. This paper presents five numerical benchmark cases for the quality assessment of simulation models for one-dimensional heat, air and moisture (HAM) transfer. In one case, the analytical solution is known and excellent agreement between several solutions from different universities and institutes is obtained. In the remaining four cases, consensus solutions have been found, with good agreement between different HAM models. The work presented here is an outcome of the EU-initiated project for standardisation of HAM calculation methods (HAMSTAD WP2).

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References

1. Philip, J.R. and de Vries, D.A. (1957). Moisture Movement in Porous Materials Under Temperature Gradients , Transactions, American Geophysical Union, 38: 222–232 .

2. Luikov, A.V. (1966). Heat and Mass Transfer in Capillary-porous Bodies, Pergamon Press, London .

3. van der Kooi, J. (1971). Moisture Transport in Cellular Concrete Roofs, PhD Thesis, Delft, Uitgeverij Waltman, the Netherlands.

4. Sandberg, P.I. (1973). Moisture Balance in Building Elements exposed to Natural Climatic Conditions (In Swedish), Division of Building Technology, Lund Institute of Technology, Report 43, Lund, Sweden .

5. Nielsson, A.F. (1974). Moisture Distribution in Cellular Concrete During Heat and Moisture Transfer, PhD Thesis, Thermal Insulation Laboratory, Technical University of Denmark.

6. Kiessl, K. (1983). Kapillarer und dampfförmiger Feuchtetransort in mehrschichtigen Bauteilen: Technerische erfassung und bauphysikalische anwendung (Dissertation), Universitat-Gesamthochschule – Essen.

7. Kohonen, R. (1984). A Method to Analyse the Transient Hygrothermal Behaviour of Building Materials and Components, Technical Research Center of Finland (VTT), Publication 21.

8. Pedersen, C.R. (1990). Combined Heat and Moisture Transfer in Building Constructions, PhD Thesis, Thermal Insulation Laboratory, Technical University of Denmark.

9. Kunzel, H.M. (1994). Verfahren zur ein- und zweidimensionalen Berechnung des gekoppelten Wärme- und Feuchtetransports in Bauteilen mit einfachen kennwerten, Dissertation an der Universitat Stuttgart, Deutchland.

10.

10. Grunewald, J. (1997). Diffusiver und konvektiver Stoff- und Energietransport in kapillarporösen Baustoffen, Dissertation an der Technischen Universitat Dresden, Deutchland.

11.

11. Hens, H. (1996). Final Report, Volume 1, Modelling. IEA-Annex 24, ACCO, Leuven.

12.

12. Hagentoft, Carl-Eric (2002). HAMSTAD – WP2 Modeling, Version 4, Report R-02:9, Gothenburg, Department of Building Physics, Chalmers University of Technology .

13.

13. Hagentoft, Carl-Eric (2002). HAMSTAD – Final report: Methodology of HAM-Modeling, Report R-02:8, Gothenburg, Department of Building Physics, Chalmers University of Technology.

14.

14. Rade, L. and Westergren, B. (1988). BETA, Mathematics Handbook, Studentlitteratur, Lund, Sweden .

15.

15. Glaser, H. (1958). Temperatur und Dampfdruckverlauf in Einer Homogene Wand bei Feuchteausscheidung, Kältetechnik, 6: 174–181.