Abstract: The collector comprises two thin stamped metal sheets, joined together by welding at their periphery, between which flows a heat-carrying liquid and is characterized in that said metal sheets are stamped with repetitive patterns whose concave surfaces are disposed opposite each other, but with staggering in their plane equal to approximately half a pitch, and in that the flat unstamped parts of said metal sheets are joined together by spot welds disposed substantially symmetrically and evenly in relation to said patterns.This collector is capable of resisting high pressures of the heat-carrying liquid.

Abstract: A pair of panels which may comprise a solar collector having an absorber and a transparent panel are supported on and integrated with a building, such as on a roof. The means of support includes a base mounting member, an intermediate mounting member, a top cover member and a plurality of bearing members. The base mounting member is secured to the building and supports the region of the edges of two absorbers of adjacent solar collectors in substantially contiguous relation. The intermediate mounting member is supported on each absorber and, in turn, supports two plates of the adjacent solar collectors. The top cover member is supported on each plate and each of the top cover members and intermediate mounting member are secured to the base mounting member. Contact between each member and the solar collector is through the bearing members which provide a tight sealing engagement upon securement.