Variable volume air wall

Claim 1

A temperature modifying system primarily for the periphery of a building including the combination of a heat exchange unit, ducting means, at least two windows and means for forcing air through the unit, ducting means and windows, the ducting means being for sequentially conducting air to the heat exchange unit, the air forcing means and the windows, said ducting means being connected to each of said windows such that air from said heat exchange unit passes through only one window prior to its return to the heat exchange unit, the windows being located in window openings in the building, at least one window being exposed to direct radiant heat from the sun and at least one other being shaded from the sun, each window including parallel transparent panels spaced apart by means forming a substantially fluid tight enclosure with said panels, said enclosure means including aperture means at its bottom and top for ingress and egress of air from the ducting means, one said panel being exposed to air outside the building and the other said panel being exposed to air inside the building, aligned slat means mounted between said parallel panels for absorbing and reflecting radiant heat, separate volume control means for the shaded window and exposed window for regulating the volume of air passing into the enclosures such that the exit temperatures of the air from the enclosures are substantially equal, a temperature sensing device near the point of egress of the air of each said windows, said temperature sensing device being operatively connected to means for modifying the size of the ingress aperture, said modifying means increasing the size of the ingress aperture when the temperature sensing device senses an increase in temperature of the air exiting the enclosure.