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A new model for mould prediction and its application on dwellings with mould on the outer facades

Sedlbauer, K., Krus, M. and Zillig, W.
2002
6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17

Sedlbauer, K., Krus, M. and Zillig, W., (2002), "A new model for mould prediction and its application on dwellings with mould on the outer facades", 6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17.
Abstract: Up to now the common methods to asses the risk of mould growth are based on steady boundary conditions. While in Germany only relative humidity is used as an assessment criterion for mould growth risk, more and more measured ispleths are used abroad. In a plot of relative humidity versus temperature, these isopleths are the outlines of the regions where the combination of relative humidity and termperature allows a given mould species to grow. But all these growth curves have been determined for steady state conditions, in spite of the non-steady state conditions in reality. This newly developed model, describing the non-steady hygrothermal behaviour of the spore, allows for the first time to employ the changing surface termperatures and RH's for the prediction of mould growth. The biohygrothermal method has been validate by the comparison with the results of measurements and observations occupied dwellings. The presented example of dwellings with mould growth in specific isolated regions of the outer facade demonstrates the excellent correspondence between the results of the model and the measurements and observations in practice. Additionally this example serves to show the possibilities for the long-term predication of mould growth risk.
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Author Information and Other Publications Notes
Sedlbauer, K.
Klaus Sedlbauer Fraunhofer-Institute for Building Physics, Holzkirchen
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  8. The hygrothermal behaviour of rooms: combining thermal building simulation and hygrothermal envelope calculation  
Krus, M.
  1. A new model for mould prediction and its application on a test roof
  2. Determination of hygric material properties and calculation of the moisture balance of wooden prisms
  3. Determination of moisture and salt content distributions by combining NMR and gamma ray measurements
  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. Simple methods to approximate the liquid transport coefficients describing the absorption and drying  
Zillig, W.
  1. A new model for mould prediction and its application on a test roof
  2. Mold growth prediction by computational simulation  


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