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The importance of moisture buffering for indoor climate and energy conditions of buildings

Rode, C., Grau, K.
2007
Proceedings of the 12th Symposium for Building Physics

Rode, C., Grau, K., (2007), "The importance of moisture buffering for indoor climate and energy conditions of buildings", Proceedings of the 12th Symposium for Building Physics.
Abstract:
Uddrag: A new Nordic test method specifies a test protocol for determination of the so-called Moisture Buffer Value (MBV) of building materials. But how important is moisture buffering to determine the indoor humidity condition of buildings? The paper will present the new MBV-definition. Although it is primarily a value meant to characterise the moisture buffer property of building materials, can it also be used as a calculation parameter in design of buildings? And how does moisture buffering compare with the effect of ventilation of buildings? Is it possible for instance to use the benefits of moisture buffering to save energy by reducing the requirement for ventilation in periods, and still maintain the same quality of the indoor climate? The paper will outline some possibilities for analytical/numerical calculations, and will answer some of the posed questions on the probable benefit of taking moisture buffering into account as a design parameter.

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Author Information and Other Publications Notes
Rode, C.
Carsten Rode Pedersen
  1. eds. Annex 41 Final Report, Volume 1: Modelling Principles and Common Exercises
  2. Empirical validation of a transient computer model for combined heat and moisture transfer
  3. Experimental investigation of the hygrothermal performance of insulation materials
  4. Full-scale testing of indoor humidity and moisture buffering in building materials
  5. Global building physics
  6. International building physics toolbox, general report
  7. Investigation of Microclimate by CFD Modeling of Moisture Interactions between Air and Constructions
  8. Latent heat flow in lightweight roofs and its influence on the thermal performance of buildings
  9. Model and experiments for hygrothermal conditions of the envelope and indoor air of buildings
  10. Moisture buffer value of building materials
  11. Moisture Buffer Value of Materials in Buildings
  12. Moisture buffering of building materials
  13. Moisture conditions of non-ventilated, wood-based, membrane-roof components
  14. Moisture: its effects on the thermal performance of a low-slope roof system
  15. Non-isothermal water vapour transmission through porous insulation. Part 1: The climate chamber
  16. Organic insulation materials: effect on indoor humidity and necessity of a vapor barrier
  17. Test cell measurements of moisture buffer effects
  18. The International Building Physics Toolbox in Simulink
  19. The self-drying concept for flat roofs
  20. Tools for performance simulation of heat, air and moisture conditions of whole buildings
  21. Whole-building Hygrothermal Simulation Model  
Grau, K.
  1. Model and experiments for hygrothermal conditions of the envelope and indoor air of buildings
  2. Moisture buffering and its consequence in whole building hygrothermal modeling
  3. Numerical method for calculating latent heat storage in constructions containing phase change material
  4. Whole-building Hygrothermal Simulation Model  


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