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Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components

Roels, S., Depraetere, W., Carmeliet, J. and Hens, H.
1999
Journal of Thermal Envelope and Building Science, v 23, n JUL., p 17-40

Roels, S., Depraetere, W., Carmeliet, J. and Hens, H., (1999), "Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components", Journal of Thermal Envelope and Building Science, v 23, n JUL., p 17-40.
Abstract:
The aim of this study is to validate different analytical relations used in hygrothermal simulations for the material properties. Therefore, a validation experiment on four types of flat roofs has been set up at the laboratory. All relevant material properties of the individual material layers were determined before-hand. During the experiment, temperatures, heat fluxes and moisture contents were measured. The measured data were then compared with numerical simulation results. By repeating the simulations with different expressions for the vapour permeability and for the sorption isotherm, the influence of approximate analytic relationships was investigated.
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Author Information and Other Publications Notes
Roels, S.
Department of Civil Engineering Laboratory of Building Physics Catholic University of Leuven, Belgium
  1. A comparison of different techniques to quantify moisture content profiles in porous building materials
  2. A comparison of the Nordtest and Japanese test methods for the moisture buffering performance of building materials
  3. A quasi-steady state implementation of air convection in a transient heat and moisture building component model
  4. Description of the moisture capacity of building materials
  5. Determination of the isothermal moisture transport properties of porous building materials
  6. Determination of the liquid water diffusivity from transient moisture transfer experiments
  7. Determination of the moisture capacity of porous building materials
  8. Impact, absorption and evaporation of raindrops on building facades
  9. In situ determination of the moisture buffer potential of room enclosures
  10. Microscopic analysis of imbibition processes in oolitic limestone
  11. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
  12. Position paper on material characterization and HAM model benchmarking
  13. Qualitative and quantitative assessment of interior moisture buffering by enclosures
  14. Review of mould prediction models and their influence on mould risk evaluation
  15. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  
Depraetere, W.
     
Carmeliet, J.
Department of Civil Engineering Laboratory of Building Physics, Catholic University of Leuven, Belgium
  1. A comparison of different techniques to quantify moisture content profiles in porous building materials
  2. A multiscale network model for simulating moisture transfer properties of porous media
  3. A review of wind-driven rain research in building science
  4. A simplified numerical model for rainwater runoff on building facades: Possibilities and limitations
  5. Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation
  6. Description of the moisture capacity of building materials
  7. Determination of the isothermal moisture transport properties of porous building materials
  8. Determination of the liquid water diffusivity from transient moisture transfer experiments
  9. Determination of the moisture capacity of porous building materials
  10. Driving rain on building envelopes II: representative experimental data for driving rain estimation
  11. Microscopic analysis of imbibition processes in oolitic limestone
  12. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
  13. Pedestrian wind environment around buildings: literature review and practical examples
  14. Performance prediction for masonry walls with EIFS using calculation procedures and laboratory testing
  15. Position paper on material characterization and HAM model benchmarking
  16. Rainwater runoff from building facades: A review
  17. Spatial and temporal distribution of driving rain on a low-rise building
  18. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground
  19. Wind, rain and the building envelope: studies at the Laboratory of Building Physics, KULeuven
  20. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  
Hens, H.
Department of Civil Engineering, Laboratory of Building Physics, Catholic University of Leuven, Leuven, Belgium http://www.bwk.kuleuven.ac.be/bwf/e_hugohens.htm
  1. A comparison of different techniques to quantify moisture content profiles in porous building materials
  2. Application of a new type of air and vapor retarder in a self-drying sloped roof with a cathedral ceiling
  3. Building envelopes in a holistic perspective
  4. Condensation risk assessment
  5. Determination of the liquid water diffusivity from transient moisture transfer experiments
  6. Evaluating the thermal performance of active envelopes
  7. Fungal defacement in buildings: a performance related approach
  8. Heat and moisture response of vented and compact cathedral ceilings: a test house evaluation
  9. Heat, air and moisture transfer in insulated envelope parts. Final Report, Volume 1, Modelling
  10. Heat-air-moisture design of masonry cavity walls: theoretical and experimental results and practice
  11. Hygric properties of a new humidity controlled vapor retarder
  12. IEA Annex 14: Condensation and Energy
  13. Inquiry on HAMCAT codes
  14. Interstitial condensation due to air leakage: a sensitivity analysis
  15. Microscopic analysis of imbibition processes in oolitic limestone
  16. Modeling. Final Report
  17. Performance prediction for masonry walls with EIFS using calculation procedures and laboratory testing
  18. Performance-based development of a thermally insulated pitched roof system
  19. Pitched roofs, heat-air-moisture transport in tiled and slated roofs with the thermal insulation at rafter level
  20. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground  


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