A heating device for heating a gas stream is proposed, the heating device comprising two electric connection elements (43, 44) for being connected to a power source and at least one heating plate unit (39A, 39B, 39C, 39D, 39E) having an inlet side and an outlet side, which comprises a plurality of heating plate strips (45, 46) which are in the gas stream and each have a first end area and a second end area, adjacent heating plate strips (45, 46) being connected to each other in the first end areas and the second end areas each via a conductive spacer structure (47).
F24H 3/04 - Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
F24H 7/04 - Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
F28D 20/00 - Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups or
F28D 17/02 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
F28D 17/04 - Distributing arrangements for the heat-exchange media
2.
HEATING DEVICE, HEATING SYSTEM, HEAT STORAGE DEVICE AND HEAT STORAGE SYSTEM
The invention relates to a heating device for heating a gas flow, comprising two electrical connection elements (43, 44) for connection to a power source, and at least one heating plate unit (39A, 39B, 39C, 39D, 39E) with an inflow side and an outflow side, which comprises a plurality of heating plate strips (45, 46) lying in the gas flow and each having a first end region and a second end region, wherein adjacent heating plate strips (45, 46) in the first end regions and the second end regions are interconnected via a conductive spacer structure (47).
F01K 3/00 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
F24H 3/04 - Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
F24H 7/04 - Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
F28D 20/00 - Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups or
H05B 3/24 - Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
F28D 17/02 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
F28D 17/04 - Distributing arrangements for the heat-exchange media
3.
HEAT STORAGE DEVICE, HEAT STORAGE SYSTEM AND METHOD FOR OPERATING A HEAT STORAGE DEVICE
The invention relates to a heat storage device (1), a heat storage system (15) having at least one heat storage device (1) and a method for operating a heat storage device (1).
Proposed is a concentrator (1) comprising a plurality of strip-type reflectors (2, 3, 4, 5, 6, 7) which each have a light-reflective surface that is curved along the longitudinal extent (L) of same, said reflectors (2, 3, 4, 5, 6, 7) having tilting axes (8, 9, 10), about which the reflectors (2, 3, 4, 5, 6, 7) are rotationally disposed, longitudinally adjacent to one another, on at least one common axis (11) which connects the tilting axes (8, 9, 10) of the reflectors (2, 3, 4, 5, 6, 7), said tilting axes (8, 9, 10) being orthogonal to the common axis (11), and wherein a rotation of the reflectors (2, 3, 4, 5, 6, 7), starting from a midpoint (13) of the common axis (11), is greater the more remote the reflectors (2, 3, 4, 5, 6, 7) are from the midpoint (13) of the common axis (11).
The invention relates to an absorber module for a receiver of a solar energy harvesting system, comprising an absorber head (12) that includes an inlet portion (13) and an outlet portion (14), wherein the absorber head (12) accommodates an absorber element (16), and the inlet portion (13) extends into the outlet portion (14). At least part of the absorber head (12) is double-walled, the absorber head (12) comprising an inner wall (10a) and an outer wall (10b) which enclose a cavity (18).
The invention relates to a receiver of a solar energy recovery plant (100), comprising a support structure (7), which carries a plurality of absorber modules (11) on a receiver front side, each comprising a retaining tube (21), which engages in a guide tube (41) of the support structure (7) such that a ring gap (50) is formed between the retaining tube (21) and the guide tube (41), through which return air flows to the receiver front side during operation in order to cool the support structure (7) and/or the affected absorber module (11). At least one throttling return air aperture (43) is arranged in at least one of the ring gaps (50), which defines a mass flow of the return air flowing through the affected ring gap (50) to the receiver front side.
F24S 40/52 - Preventing overheating or overpressure by modifying the heat collection, e.g. by defocusing or by changing the position of heat-receiving elements
F24S 20/20 - Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
A solar thermal plant is proposed, comprising a receiver unit (16) and a heliostat array (14), in which a multiplicity of heliostats (12) are arranged, distributed over a number of sectors (50A to 50G, 58A to 58F), which comprise sectors of a circle (50A to 50G), which respectively comprise rows (52) of heliostats (12) arranged along parallel lines. The normal to the line of one sector of a circle (50A to 50G) is set with respect to the normal to the line of every other sector of a circle (50A to 50G) and the sectors of a circle (50A to 50G) respectively have a receiver-near portion (54), in which the sectors of a circle (50A to 50G) are arranged adjacent to one another, and a receiver-remote portion (56). Respectively arranged between two sectors of a circle (50A to 50G) in the region of the receiver-remote portions (56) thereof there is at least one intermediate sector (58A to 58F), in which heliostats (12) are arranged in rows (59) along parallel lines of which the normal is set with respect to the normals of all the other sectors of a circle (50A to 50G).
The invention relates to a solar receiver unit, comprising a basic construction (54) having at least one exposure side on which a receiver (20) for solar radiation which is reflected by heliostats (12) is arranged, wherein the receiver (20) is delimited laterally, at least substantially around its periphery, by a radiation protection device (52) which comprises a carrier arrangement (62) which is fastened to the building construction (54) and on which are fastened insulating material panels (56) which each have a base plate (78) on which insulating material (88) is arranged.
DEUTSCHES ZENTRUM FÜR LUFT- UND RAUMFAHRT E.V. (Germany)
KRAFTANLAGEN MÜNCHEN GMBH (Germany)
Inventor
Hoffschmidt, Bernhard
Koll, Gerrit
Abstract
The invention relates to a high-temperature receiver for solar power stations, especially for heliostat power stations, with air as a heat transfer medium. The receiver has a supporting structure (14), which bears a number of rows of receiver modules (13) that use absorber elements (36) to capture the solar radiation. The absorber elements take in outside air and discharge it as hot air (25) through hot-air tubes (24). To cool the hot-air tubes (24), cooling jackets (26) are provided inside the hollow space (15). The cooling is performed using returned air that generally still contains residual heat. This is blown out from outlet nozzles (41), which are arranged before the front sides (36a) of the adjacent absorber modules, and so the returned air that is expelled is taken in by a number of absorber modules. As a result, energy losses are largely avoided and a high level of efficiency is achieved.
The invention relates to a heat store (1) having at least one storage element (3) comprising molded stones (4) made of ceramic layered on top of each other, substantially disposed in a wall composite (13), wherein each molded stone (4) comprises a substantially rectangular and/or triangular cross section, at least some of the molded stones (4) particularly comprise feet (17) reducing heat transfer from one molded stone (4) to another molded stone (4), said feet being provided in the corners of the molded stone (4) and formed by machining away the molded stone (4) at the lower end thereof, wherein a transverse flow chamber (14) having a circular cross-section and having lateral overflow openings (27) is simultaneously formed by machining, and the overflow openings (27) interact with overflow openings (27) of further molded stones (4) for increasing the transverse flow chamber (14) across a plurality of adjacently disposed molded stones (4).
F28D 20/00 - Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups or
F28D 17/02 - Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
F27D 1/04 - Casings; Linings; Walls; Roofs characterised by the form of the bricks or blocks used
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