AT-90-07-3 -- Joint Canadian/US Research Project on Window Performance PDF

This is the first paper resulting from this joint research project. It outlines the overall project objectives and presents the first set of results. It also provides a summary of the future work planned in the first phase of this project. The results presented in this paper compare overall U-values for seven windows obtained for laboratory testing using a guarded hot box and the U-values obtained using two computer models. The results indicate a reasonable agreement between the guarded hot box measurements and the simulations for overall U-values, but differences exist when comparing the edge-of-glass and frame U-values resulting from computer simulations.

KEYWORDS: research, windows, performance, glazing, Canada, USA, calculating, thermal resistance, comparing, measuring, laboratory testing, window frames, double glazing.