Abstract: A solar absorber body for a concentrating solar power system, said solar absorber body including: a tube, designed to contain a heat transfer medium and including a first part designed to be exposed to the sunlight and a second part designed to be unexposed to the sunlight, an assembly of fins made of thermally conductive material, and a selective coating arranged at least on the outer surface of the first part of the tube, said assembly of fins defining at least two longitudinal passages inside the tube, said passages being adjacent in a sectional plane perpendicular to the longitudinal axis of the tube, said assembly of fins being configured to create a continuous thermal bridge inside the tube from at least a portion of the inner surface of first part of the tube to at least a portion of the inner surface of the second part of the tube.

Abstract: A liquid-cooled-type cooling device includes a casing having a cooling-liquid inlet and a cooling-liquid outlet, and an outflow pipe connected to the cooling-liquid outlet. The casing includes a cooling-liquid outflow portion, and the cooling-liquid outlet is formed in a top wall of the cooling-liquid outflow portion. The outflow pipe has a bottom wall parallel to a portion of the top wall of the cooling-liquid outflow portion where the cooling-liquid outlet is formed. The bottom wall has a through hole for communication with the cooling-liquid outlet. A guide portion is provided on a portion of an upper surface of a bottom wall of the cooling-liquid outflow portion, the portion corresponding to the cooling-liquid outlet, so as to change, toward an upward direction, the flow direction of cooling liquid flowing into the cooling-liquid outflow portion. Thus, a flow resistance which cooling liquid undergoes when flowing out of the casing can be reduced.

Abstract: The present invention relates to a light absorbing device which comprises an transparent outer material layer, a space through which air is circulated and heated by light radiation passing through the outer the material layer, a radiation absorbing material layer, and an element which is adapted to divide the space in at least a first subspace, which comprises a first opening, and a second subspace, which comprises a second opening. The air is adapted to flow along a path having an extension from the first opening to the second opening. The path comprises flow resistance reducing means in at least one portion of the space which is adapted to reduce the flow resistance for the gaseous medium when it is guided through said portion of the space.

Abstract: A solar collector plate (2) has a solar radiation receiving front absorber plane (3) that is wiped at its rear side by a cooling liquid (4) flowing in channels (5). Cavities (7), preferably behind the channels (5) and integrated in the solar collector plate (2), and that can be closed off by the very liquid flow (4), provide a closed air volume that gives a dampening effect regarding kickbacks and pressure transients in the liquid (4).

Abstract: In order to provide an insulation system for internal thermal insulation of a pressure chamber which can be subjected to pressure by a gas flow, the system being constructed for arrangement at an inner surface of an outer jacket of the pressure chamber and comprising at least one layer of insulating material, whereby good thermal insulation can be obtained with little maintenance work, it is proposed that the insulation system should comprise means for equalizing pressure between the insulating material and an internal chamber, which means are arranged over a large area relative to a surface of a layer of insulating material.

Abstract: A coolant sealing structure for a solar cell of which the sealing property is maintained with high reliability in use for a long period. A solar cell has its light receiving surface and a reinforced portion formed around the fringe portion of the light receiving surface. The plate member is joined with the top of the reinforced portion by means of an anode joint process. A transparent member is joined with the plate member to form a coolant passage. This structure allows the solar cell to be directly cooled with the coolant flowing through the coolant passage. Since the solar cell is joined with the plate member, separation does not occur at the joined portion under repeated temperature changes. The coolant sealing structure can be used with high reliability for a long period.

Abstract: This invention reduces a molten salt, solar central receiver's size, pressure loss and cost by using a loose-tight-loose twist, twisted-tape insert inside the receiver's tubes to enhance the tube's heat transfer coefficient. This twist staging is designed to provide a higher heat transfer coefficient in the receiver's central region where the solar flux is high and a reduced pressure loss at the low solar flux entrance and exit end regions. Because the twisted-tape enhances the tube's heat transfer ability it can be made larger in diameter than a smooth bore tube at an equivalent pressure loss. This reduces the number of tubes which results in a substantial reduction in receiver cost.

Abstract: An improved roll-form vent for buildings comprises a sequentially thermoformed polymeric vent which provides multiple venting air flow paths between the interior of a building and ambient atmosphere. The vent includes projections extending from a web and a plurality of vent openings that cooperate with screening to bar entry into the building of water, insects and foreign matter. A method of making the vent includes steps of providing a web of material of indeterminate running length, heating the web, sequentially thermoforming the web, cooling the web and rolling the formed vent for storage, shipment and use.