Hygro-thermal performance of hollow bricks and current standards
Bondi, P. and Stefanizzi, P.
2001 Energy and Buildings, 33 (7): 731-736
hollow bricks, vapour transfer resistance, glaser method, two-dimensional finite elements, experimental data
Bondi, P. and Stefanizzi, P., (2001), "Hygro-thermal performance of hollow bricks and current standards", Energy and Buildings, 33 (7): 731-736.
Abstract:
Hygro-thermal performance of building components is a result of the interaction of several influencing factors (i.e. vapour and liquid transfer, driving rain, solar radiation, etc.), but national and international standards are still based on Glaser-type methods of calculation.
A mono-dimensional moisture transfer resistance of each layer must be evaluated in a many-layered wall. When the layer is nonhomogeneous such as an hollow brick numerical calculations are due to its two-dimensional performance.
Numerical results are mesh dependent, but two-dimensional numerical analysis is able to predict in-wall condensation not evident from standard mono-dimensional calculations.
Experimental measurements of water-vapour transfer resistance are reported and results are compared with numerical and standard ones.