Patent ID: 8869530

Claim:
A heat-exchange device configured so as to capture incident energy by radiation, with at least one flag-shaped elementary exchanger ( 10 ) comprising: a) a rectilinear inlet collector ( 5 ) and a rectilinear outlet collector ( 6 ) having parallel axes; b) a plurality of exchange tubes ( 1 ) connected to the rectilinear inlet collector ( 5 ) and to the rectilinear outlet collector ( 6 ), respectively, each exchange tube ( 1 ) being self-supported, in the form of at least one hairpin connected in cantilever fashion to the rectilinear inlet collector ( 5 ) and to the outlet collector ( 6 ) respectively, said hairpin having two branches ( 2 , 3 ) each branch comprising a rectilinear portion, said branches being of said collectors ( 5 , 6 ) and extended in a curved pinhead portion ( 4 , 11 , 12 ) which is distal of said collectors ( 5 , 6 ) and mechanically free, wherein the two branches ( 2 , 3 ) of each exchange tube ( 1 ) are joined transversally to the common direction of the respective parallel axes of the collectors ( 5 , 6 ), on the respective rectilinear portions of said branches ( 2 , 3 ), so that said rectilinear portions are substantially in a same plane and wherein all the exchange tubes ( 1 ) are stacked in the same plane so as to form, in use, a vertical flag stopping substantially all the incident radiation impinging on the heat-exchange device.