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Moisture buffering effects of interior linings made from wood or wood based products

Kščnzel, H. M., Holm, A., Sedlbauer, K., Antretter, F. and Ellinger, M.
2004
Frauenhofer-Institut fščr Bauphysik IBP Report HTB-04/2004/e. Investigations commissioned by Food Focus Oy and the German Federal Ministry of Economics and Labour

Kščnzel, H. M., Holm, A., Sedlbauer, K., Antretter, F. and Ellinger, M., (2004), "Moisture buffering effects of interior linings made from wood or wood based products", Frauenhofer-Institut fščr Bauphysik IBP Report HTB-04/2004/e. Investigations commissioned by Food Focus Oy and the German Federal Ministry of Economics and Labour.
Abstract:
A uniform indoor climate with minor variations in temperature and relative humidity contributes to establish a healthy and comfortable environment for the occupants. It is a well-known fact that the thermal mass of the building envelope counteracts strong changes in temperature (e.g. due to solar radiation). The fact that there is also something like a 'hygric mass', antagonising strong variations of moisture, is however less common. Here, 'hygric mass' means the vapour absorption capacity of the enclosing surfaces which is capable of buffering moisture variations inside a space. This would be beneficial in rooms where the generation of moisture (e.g. due to human activities) and the extraction of moisture (by way of ventilation) do not coincide. Concerning this issue, VTT (Finland) conducted numerical investigations which proved timber lining to have a favourable effect on the relative humidity in bedrooms that are ventilated during the daytime only. To validate the interpretation of these calculations, and to obtain some practice-oriented quantification of moisture buffering effects of different types of internal linings (based on wooden products or cellulose fibers) under defined boundary conditions, a series of comparative field tests was conceived by the Fraunhofer Institute of Building Physics (IBP) at Holzkirchen, Germany. This report presents the execution and the results of these tests.

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Author Information and Other Publications Notes
Kščnzel, H. M.
Fraunhofer-Institute for building physics (Director: Prof. Dr.-Ing. habil. Dr. h.c. mult. Dr. E.h. mult. K. Gertis)
  1. Calculation of heat and moisture transfer in exposed building components
  2. Combined effect of temperature and humidity of the detoriation process of insulation materials in ETICS
  3. Flexible vapor control solves moisture problems of building assemblies - smart retarder to replace the conventional PE-film
  4. Mold growth prediction by computational simulation
  5. Simulation of indoor temperature and humidity conditions including hygrothermal interactions with the building envelope
  6. Simultaneous heat and moisture transport in building components. one- and two-dimensional calculation using simple parameters
  7. Two-dimensional transient heat and moisture simulations of rising damp with WUFI 2D
  8. Uncertainty of hygrothermal calculations
  9. WUFI-ORNL/IBP - A North American Hygrothermal Mode  
Holm, A.
Gunnar Holm Department of Biotechnology, Technical University of Denmark, Building 221, DK-2800 Lyngby, Denmark.
  1. An educational hygrothermal model: WUFI-ORNL/IBP
  2. Combined effect of temperature and humidity of the detoriation process of insulation materials in ETICS
  3. Determination of moisture and salt content distributions by combining NMR and gamma ray measurements
  4. Drying of an AAC flat roof in different climates Computational sensitivity analysis versus material property measurements
  5. Moisture-buffering effect - experimental investigations and validation
  6. Non-isothermal moisture transfer in porous building materials
  7. Position paper on material characterization and HAM model benchmarking
  8. Practical application of an uncertainty approach for hygrothermal building simulations--drying of an AAC flat roof
  9. Previous Experimental Studies and Field Measurements on Moisture Buffering by Indoor Surface Materials
  10. Simulation of indoor temperature and humidity conditions including hygrothermal interactions with the building envelope
  11. Stochastic building envelope modeling -- the influence of material properties
  12. The hygrothermal behaviour of rooms: combining thermal building simulation and hygrothermal envelope calculation
  13. Two-dimensional transient heat and moisture simulations of rising damp with WUFI 2D
  14. Uncertainty approaches for hygrothermal building simulations - drying of an AAC flat roof in different climates
  15. Uncertainty of hygrothermal calculations  
Sedlbauer, K.
Klaus Sedlbauer Fraunhofer-Institute for Building Physics, Holzkirchen
  1. A new model for mould prediction and its application on a test roof
  2. A new model for mould prediction and its application on dwellings with mould on the outer facades
  3. Ecological insulation materials - does sorption moisture affect their insulation performance?
  4. Information and Technology Transfer from IBP: Mold Growth on ETICS (EIFS) as a Result of "Bad Workmanship"?
  5. Mold growth prediction by computational simulation
  6. Prediction of mould fungus formation on the surface of and inside building components
  7. Prediction of mould growth by hygrothermal calculation
  8. The hygrothermal behaviour of rooms: combining thermal building simulation and hygrothermal envelope calculation  
Antretter, F.
     
Ellinger, M.
     


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