ABSTRACT
This paper presents some of the results of a comprehensive parametric study where a range of glazing types were tested in building simulations for different locations in Norway. The buildings were different kinds of dwellings, believed to be most sensitive to glazing performance. The level of thermal insulation and internal gains were also varied, as this greatly influences the length and severeness of the heating season. Both direct gain windows and sun spaces were studied. In this paper, only the results for a direct gain dwelling are presented.
The study showed that one can save from 20 to 40% of the annual heating demand by replacing double pane windows with advanced quadruple pane or vacuum windows, depending on the window area and location. The insulation standard of the house itself has very little impact on the relative energy savings related to the different window types.
Triple pane windows with one low-E coating and argon are the most cost effective for all locations and house constructions.
