Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.
One of the most important contributions to the energy
requirements in buildings is due to heat transfer through the
window surfaces. Therefore, several efforts were made in order
to obtain new window frames and glass assemblies with low
thermal heat transfer characteristics. To this point of view, it is
also necessary to reach accurate measurements of the abovementioned
In this paper, the authors show an innovative measurement
method based on radiative and conductive heat transfer which
performs window thermal conductance measurements with
annexed uncertainty budget evaluation.
In the design of the experimental apparatus the authors used
a 3D finite volume software whose results were useful for the
system optimisation and characterisation.