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Effect of "Pollutants" on the functionality of breathable roofing membranes in a bat roost

Essah, E. A. and Waring, S. D. (2014) Effect of "Pollutants" on the functionality of breathable roofing membranes in a bat roost. In: The 13th International Conference on Indoor Air Quality and Climate, 7-12 July, 2014, Hong Kong.

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The performance of breathable roofing membranes (BRM’s) in buildings where bats roost have been investigated using experimental measurements and numerical simulations. Measurement techniques as outlined in BS EN ISO 12572 of membranes from manufacturers in its pure state and those that have been contaminated with bat urine, faeces and natural oils transmitted via fur because they were found in bat roost have been tested for their permeability functions. The findings from this shows that there are significant differences between the functionality of the pure samples compared to the contaminated samples, with an average of about 20-30% reduction in functionality. This paper integrates modelling techniques using a heat, air and mass software with a simulink interface on a Matlab platform to investigate the moisture transfer properties of the BRMs. The simulation results demonstrate high level of condensation formation when the BRM is contaminated as compared to when it is not.

Item Type:Conference or Workshop Item (Paper)
Divisions:Interdisciplinary centres and themes > Centre for Technologies for Sustainable Built Environments (TSBE)
Science > School of the Built Environment > Energy and Environmental Engineering group
ID Code:37127

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