Method for producing an absorber for a solar collector, and a solar collector
AssigneeRodomach Speciaalmachines B.V.
InventorsBernard Teunis TE KAMP, Roelof DOORNEBOSCH
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Abstract
A method for producing a solar heat absorber for a solar collector, the solar heat absorber having a fluid inlet and a fluid outlet. The method includes the steps of providing a first and a second substantially flat metal plate, laser welding the plates together at least along a perimeter of the plates, providing at least a circumferential weld while pressing the plates together, placing the welded plates in a press that provides its pressure at the weld or welds and the press applying a pressure of at least 200 tons per m2 of absorber, and then providing a fluid under a pressure to the absorber via at least one of the fluid inlet and the fluid outlet.
Claims20
A method for producing an absorber for a solar collector, the absorber having a fluid inlet and a fluid outlet, the method comprising:
- providing a first substantially flat metal plate and a second substantially flat metal plate;
- laser welding the first substantially flat metal plate and the second substantially flat metal plate together at least along a perimeter of the first substantially flat metal plate and the second substantially flat metal plate via at least a circumferential weld, while pressing together the first substantially flat metal plate and the second substantially flat metal plate;
- placing the welded first substantially flat metal plate and the welded second substantially flat metal plate in a press and applying pressure at the welds using a pressure of at least 200 tons per m2 of the absorber;
- providing a fluid under a pressure to the absorber via at least one of the fluid inlet and the fluid outlet, the fluid being applied at a pressure difference of at least 20 bar between the fluid inlet and the fluid outlet to thereby inflate the absorber, expanding the welded first substantially flat metal plate and the welded second substantially flat metal plate to thereby create a permanent fluid channel between the first substantially flat metal plate and the second substantially flat metal plate and also fluidically-couple the fluid inlet to the fluid outlet.
A solar collector comprising:
- a solar heat absorber including a fluid inlet and a fluid outlet;
- a first substantially flat metal plate and a second substantially flat metal plate being laser welded to the first substantially flat metal plate at least along a perimeter of the first substantially flat metal plate and the second substantially flat metal plate, and including at least a circumferential weld;
- a fluid channel provided between the first substantially flat metal plate and the second substantially flat metal plate;
- and
- wherein the fluid inlet is fluidically coupled to the fluid outlet.
A solar collector comprising:
- a solar heat absorber including a first metal plate and a second metal plate welded together at respective perimeters thereof via a continuous, circumferential weld, a fluid inlet and a fluid outlet provided within the circumferential weld, at least one continuous weld extending between the fluid inlet and the fluid outlet, and a plurality of spot welds within the circumferential weld.
Dependencies are inferred from the claim text.