Advancement in the Vacuum Glass Sealing Materials and Heat Load Predictions of Triple Vacuum Glazing

Heat loss through the windows of solid wall dwellings/buildings is one of the factors contributing to high energy consumption for space heating resulting in excessive carbon emissions which lead to climate change. Heat loss from conventional glazings can be reduced down to low levels by retrofitting triple vacuum glazing. To design, simulate and develop triple vacuum glazing having cost effective hermetic edge sealing solution in order to achieve the heat transfer coefficient mid-pane Ug value down to 0.5 W/(m2.K). A room of a solid wall dwelling was modelled and simulated. It was predicted that significant energy savings can be made and the window to wall area ratio can be increased with minimal increase in heat load when using triple vacuum glazing. The experimental work indicates that a new low cost hermetic material for edge sealing is possible and mid-pane U values down to 0.5 W/(m2.K) can be achieved.