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Moisture-buffering effect - experimental investigations and validation

Holm, A. and Lengsfeld, K.
2007
In: Proceedings buildings X conference, thermal performance of the exterior envelopes of whole buildings. Clearwater Bach, Fl

Holm, A. and Lengsfeld, K., (2007), "Moisture-buffering effect - experimental investigations and validation", In: Proceedings buildings X conference, thermal performance of the exterior envelopes of whole buildings. Clearwater Bach, Fl.
Abstract:
Well-balanced conditions of thermal, moisture, and air quality are very important in buildings because an imbalance of these factors could have significant influences on the construction and the inhabitants. The focus is the influence of different materials on the fluctuation of relative humidity, specifically humidity peaks. In lieu of complicated and expensive laboratory testing, several different software tools have been developed to estimate the indoor environmental conditions of buildings. In the context of the IEA Annex 41 project, a common exercise was carried out. For the common exercise at the free field investigation area in Holzkirchen (Germany), two identical rooms were used to measure the moisture buffering capacity of several interior finish systems. To address the questions of buffering capacity, the Fraunhofer-Institute of Building Physics developed a hygrothermal simulation tool, WUFI-Plus (Holm et al. 2006). Using the measurement data from the common exercise, calculations were carried out with several software tools for its validation. In this paper, the results of the laboratory tests and simulation results are described.

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Author Information and Other Publications Notes
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 effects of interior linings made from wood or wood based products
  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  
Lengsfeld, K.
  1. Previous Experimental Studies and Field Measurements on Moisture Buffering by Indoor Surface Materials  


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