SOLAR HEAT COLLECTING DEVICE

摘要

The invention relates to a solar heat collecting device of the flat panel type made of extruded profiles (1) in particular of aluminium or aluminium alloys and a process for its manufacture. The device comprises a casing (14) accommodating a heat collector assembly comprising a plurality of elongate extruded heat collector bodies (1), side by side, each having a tube (3) co-axial with its axis of extrusion, flanked on each of its opposite sides integrally by an extruded web (5) and further comprising a manifold (20) at each end to which the respective tube ends are brazed. The edges of the adjoining webs (5) of adjoining elongate bodies (1) overlap slightly but are movable free of mechanical constraint or mutual attachment in relation to one another. Together the elongate bodies (1) present the incoming solar radiation with a substantially plane uninterrupted area for absorption.