Building energy system

Abstract

There is disclosed a building energy system comprising a building enclosure having an interior and exterior. The building enclosure comprises an insulated building envelope that incorporates perimeter windows with a centre-of-glass R-value of R-4 or higher, at least one upper exhaust outlet and at least one lower supply intake that connect to the exterior of the building enclosure, and at least one central space that is connected to the lower supply intake and one or more perimeter rooms located adjacent to the central space. Each perimeter room comprises one or more lower wall vents that connect to the central space, and one or more upper vents connected to the upper exhaust outlet. The upper exhaust outlet incorporates a regulator to minimize ventilation air heat loss while maintaining indoor air quality. The regulator may comprise an automated damper and a motorized fan selectively operated based at least in part on measurements of air pollution contaminants. There is also provided a variable solar control window panel comprising coating or coatings on a number of possible glazing surfaces of a multiple glazed window. The coating or coatings comprises thin film multi-layer optical interference filters configured to selectively block solar radiation in depending upon an incidence angle of sunlight on the glazing surface.

Dependencies are inferred from the claim text.