Abstract: The solar energy-collecting architectural enclosure panel includes outer and inner plates which are mutually facing and joined by a leak-tight joint along a closed perimeter separated at a distance from perimetric edges of the panel. The outer and inner plates include within the closed perimeter hollow conformations to form a circuit for a heat-carrying fluid with an inlet and an outlet. Adjacent to opposite longitudinal edges of the outer plate there are first longitudinal stiffening configurations and adjacent to opposite longitudinal edges of the inner plate there are second longitudinal stiffening configurations configured to rest on transverse elements of a structure. The outer and inner plates are furthermore joined by a mechanical connection in expected maximum bending stress areas adjacent to the opposite longitudinal edges of the outer and inner plates.

Abstract: A solar energy-collecting modular element for enclosure, and modular system for forming solar energy-collecting enclosures in buildings is described. The modular solar energy-collecting enclosure element comprises an outer plate and inner plate, facing each other and joined together by at least one leak-tight joint line along a closed perimeter. One or both plates include one or more hollow conformations within the perimeter that form a circuit for a heat-carrying fluid with an inlet and an outlet. The joint line is at a distance from the downstream transversal edges from the outer and inner plates thereby providing an accessible gap between respective free outer and inner portions of the outer and inner plates downstream from the joint line. This accessible gap is adapted to be plug-connected to an upstream free portion of the outer plate of a similar adjacent modular element located downstream.