EP4256248A1 - Appareil récepteur de rayonnement solaire pour chauffer un milieu de transfert de chaleur dans une centrale héliothermique - Google Patents

Appareil récepteur de rayonnement solaire pour chauffer un milieu de transfert de chaleur dans une centrale héliothermique

Info

Publication number
EP4256248A1
EP4256248A1 EP21782646.0A EP21782646A EP4256248A1 EP 4256248 A1 EP4256248 A1 EP 4256248A1 EP 21782646 A EP21782646 A EP 21782646A EP 4256248 A1 EP4256248 A1 EP 4256248A1
Authority
EP
European Patent Office
Prior art keywords
container
solar radiation
wall
heat transfer
transfer medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21782646.0A
Other languages
German (de)
English (en)
Inventor
Jens Rheinländer
Reiner Buck
Matti LUBKOLL
Lars Amsbeck
Markus Alois REICHART
Miriam EBERT
David TREBING
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Deutsches Zentrum fuer Luft und Raumfahrt eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Deutsches Zentrum fuer Luft und Raumfahrt eV
Publication of EP4256248A1 publication Critical patent/EP4256248A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/20—Working fluids specially adapted for solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/30—Arrangements for connecting the fluid circuits of solar collectors with each other or with other components, e.g. pipe connections; Fluid distributing means, e.g. headers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S2080/03—Arrangements for heat transfer optimization
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the invention relates to a solar radiation receiver device for heating a heat transfer medium in a solar thermal power plant.
  • Prior art solar radiation receiver devices are known as solar particle receivers for solar tower power plants.
  • Such receivers use a rotating, hollow-cylindrical container in which a closed film of ceramic particles with a diameter of typically 1 mm forms as a heat transfer medium on the inner wall of the rotating cylinder.
  • This particle film is heated to over 900° C using concentrated solar radiation and then removed from the cylinder.
  • the energy stored in the particles can be temporarily stored in an insulated container and used for power generation and/or in process applications.
  • the receiver usually consists of three areas.
  • a particle distributor is designed as a feed hopper to the rotating cylinder.
  • the hopper consists of a cone with baffles welded on, through which the particles are accelerated and distributed onto the inner wall of the rotating cylinder.
  • the particle running surface on the inner wall of the hollow cylinder can be provided with a grid welded on. The grid serves to increase the friction between the particles and the inner wall of the cylinder.
  • the particles are collected again at the end of the rotating cylinder and discharged in a controlled manner in a stationary, non-rotating collection ring as a discharge device.
  • the collection ring is sealed against particle loss from the rotating cylinder by means of a metal axial labyrinth seal.
  • DE 102014106320 A1 describes a device with a solar radiation receiver which includes a container which includes an outer wall and an interior space surrounded by the outer wall.
  • the device includes a supply device for supplying a heat transfer medium to the interior of the container.
  • the container can be rotated about an axis of rotation by means of a rotary drive device of the solar radiation receiver device in such a way that the heat transfer medium is guided along an inner wall of the container, forming a heat transfer medium film.
  • the device comprises at least one overflow element for forming a rotationally symmetrical inner surface of the heat transfer medium film.
  • the object of the invention is to create an inexpensive solar radiation receiver device with increased efficiency.
  • the object is solved by the features of the independent claim.
  • Favorable configurations and advantages of the invention result from the further claims, the description and the drawing.
  • a solar radiation receiver device for heating a heat transfer medium in a solar thermal power plant comprising a container with two opposite ends, which comprises an outer wall and an interior space surrounded by the outer wall; a supply device for supplying the heat transfer medium to the interior of the container, the supply device being arranged at one of the ends of the container; a discharge device for discharging the heat transfer medium from the container, the discharge device being arranged at the same or opposite end of the container; and an aperture opening for entry of solar radiation at one of the ends.
  • the container has a longitudinal axis which is oriented parallel or at an acute angle of less than or equal to 90° to the direction of gravity.
  • the container can be rotated about an axis of rotation in an intended direction of rotation by means of a rotary drive device of the solar radiation receiver device such that the heat transfer medium can be guided along an inner wall of the container, forming a heat transfer medium film.
  • the inner wall of the container has a friction-enhancing device.
  • the container is closed at its first end with a front wall.
  • the feed device has at least one particle feed, which is carried out through the front wall and which is designed to feed the heat transfer medium into the interior of the container in a tangential direction to the inner wall of the container.
  • a more homogeneous distribution of the heat transfer medium which can in particular be designed as a particle flow, can advantageously be achieved at the beginning of the running surface of the heat transfer medium on the inner jacket of the container.
  • the heat transfer medium can be guided tangentially onto the inner wall of the container at a peripheral speed via a tube that is stationary relative to the rotating container.
  • the particles of the heat transfer medium can be fed into the lower half of the container, where the particles come down as the container rotates.
  • the heat transfer medium can advantageously enter the interior of the container evenly and with the lowest possible radial velocity component.
  • An advantage can be a reproducible, uniform, homogeneous particle film that can be formed independently of the diameter of the container.
  • a reduction in production costs is possible through the supply device according to the invention, since no otherwise conventional, complex double hopper is required for supplying the heat transfer medium.
  • the particle feed pipe at the outlet can be designed with a non-round cross-section in order to achieve a more homogeneous film on the rotating inner wall. For example, a rectangular outlet with an edge parallel to the axis of rotation of the container can result in a wider and thus more homogeneous particle film.
  • the pipe for the particle feed can be made, for example, from thermal shock-resistant ceramics such as corderite, or a radiation protection shield or a multi-layer structure of the pipe with insulation can be used , structural material, air cooling and abrasion-resistant material are used.
  • the at least one particle supply can be guided through the front wall in the axis of rotation of the container. Compared to an eccentric pipe bushing, this results in a reduced sealing surface and a significantly lower relative speed between stationary and rotating parts of the solar radiation receiver device.
  • the front wall can be designed in the shape of a cone.
  • an outlet of the at least one particle feed can be arranged directed towards the front wall of the container.
  • the particle feed is not routed through the interior of the container to the inner wall.
  • the front wall of the container is cone-shaped so that the particles can be discharged directly to the inside of the cone-shaped front wall.
  • radial guide elements can be arranged on the cone of the front wall for better distribution of the particles.
  • the curved feed tube for the particle feed can also be protected from direct solar radiation by means of a cover plate that is as small as possible.
  • the cover plate can, for example, be permanently mounted on the particle feed.
  • the at least one particle feed can be passed through the front wall at a radial distance from the axis of rotation of the container, in particular adjacent to the inner wall.
  • the outlet of the particle feed can be arranged directed towards the inner wall of the container.
  • the feed device is arranged eccentrically, so that the feed device is positioned directly in front of the inner wall of the container with the passage through the front wall. To do this, it is necessary to position the front wall in a stationary manner in relation to the rotating wall of the container. Consequently, an additional seal to the rotating part of the container is required.
  • This seal can be designed as a labyrinth and/or sealing air seal and/or another common sealing option.
  • the advantage of the eccentrically arranged tube is that the particles can be deposited directly on the inner wall without a detour and a homogeneous particle film is created. Due to the short distance, the pipe can also be protected from solar radiation with a cover plate. This reduces the use of materials even in areas subject to high loads, which means that costs can also be reduced here. Furthermore, it is also possible here to carry out maintenance from the outside of the container. Even the entire front wall can be removed to access the container from the back.
  • the inner wall of the container can have a circumferential groove directed outwards in a radial direction.
  • the outlet of the at least one particle feed can be arranged directed towards the groove.
  • a radial position and/or an angular position about a longitudinal axis of the feed device can advantageously be adjusted during operation depending on the operating point, for example a different speed of the container, a different particle mass flow, or a different irradiation power.
  • the use of several particle feeds can be provided if, with high mass flows, the transition between a single outlet of a particle feed and the particle running surface results in an intolerable quantity of scattered particles. This also favors the availability of the solar radiation receiver device by creating redundancies.
  • the heat transfer medium can be free-flowing or free-flowing.
  • the heat transfer medium can be formed by particles.
  • the heat transfer medium comprises particles or particles made from sintered bauxite or is formed from particles or particles made from sintered bauxite.
  • the particles or particles can preferably have an average particle diameter of approximately 250 ⁇ m to approximately 1.8 mm.
  • powdered media with much smaller grain sizes, such as cement flour can also be used.
  • the particles preferably have a high sphericity.
  • the sphericity ie the ratio of the surface area of a sphere of the same volume to the surface area of the particle, can in particular be greater than approximately 0.8, in particular greater than approximately 0.9.
  • the particles or particles can be thermal shock resistant.
  • the axis of rotation can be parallel or at an acute angle of less than or equal to 90°, preferably less than or equal to 80°, to the direction of gravity g.
  • the axis of rotation can be coaxial with the longitudinal axis of the container.
  • a heat transfer medium film can form particularly favorably on the inner wall of the rotating container, so that the most uniform possible heat transfer to the heat transfer medium can be achieved.
  • the particle feed can be designed as a tube which is firmly connected to a receiving device arranged outside of the container. Particles of the heat transfer medium can be directed tangentially to the inner wall of the container through the tube and fed into the interior of the container with the appropriate peripheral speed of the container.
  • the tube may be suitably bent so that its exit, from which the particles exit, is tangential to the container wall.
  • the supply device can be provided for supplying the heat transfer medium in the tangential direction at a peripheral speed of the container.
  • the heat transfer medium can contact the inner wall of the container in a suitable manner and form a favorable heat transfer film on the inner wall.
  • the particles of the heat transfer medium can be fed into the tube at a defined speed, for example with compressed air, so that the particles then preferably exit the outlet into the interior at the peripheral speed of the rotating container.
  • the front wall can have a removable insulating element for mounting the particle feed.
  • the insulating element can be removed in a non-destructive manner.
  • the particle feeder can be installed in a simple manner.
  • the insulation element can advantageously reduce a loss of heat from the interior of the container to the environment.
  • a rotary bushing can be provided for carrying out the particle feed through the front wall.
  • a rotationally symmetrical insulating element can be arranged on the particle feed from the outside. The insulation element can advantageously reduce a loss of heat from the interior of the container to the environment.
  • a sealing air duct which surrounds the rotary leadthrough on an outside of the container, can be arranged to seal off the interior of the container from the environment. Compressed air can be blown into the sealing air duct in a suitable manner in order to reduce the loss of particles of the heat transfer medium from the interior of the container to the environment.
  • the sealing air duct thus assumes the function of sealing the rotary feedthrough.
  • an outlet of the particle feed can be arranged on the inner wall in a tangential direction in the direction of rotation of the container.
  • the heat transfer medium can contact the inner wall of the container in a suitable manner and form a favorable heat transfer film on the inner wall. In this way, the heat input into the heat transfer medium can advantageously be improved.
  • the inner wall of the container can have distributed guide structures, in particular blade-like guide structures, which are designed to convey the heat transfer medium in the direction of the supply-side or discharge-side end when the container is rotating.
  • the particle movement of the heat transfer medium in the container is essentially due to gravity.
  • the container is usually tilted with the aperture opening down. The highest temperatures occur near the aperture opening.
  • the temperature profile in the interior of the container can be changed in such a way that the highest temperatures occur near the rear wall deep inside the container. As a result, the thermal losses due to thermal radiation and convection can be advantageously reduced.
  • a large number of shovel-like guide structures can be used, which are permanently installed in the container in such a way that an upper layer of the supplied particles is lifted off and offset by about one shovel distance against the direction of rotation and deposited again.
  • At least one conveying device in particular a tube, which runs parallel or slightly inclined, in particular less than 10°, preferably less than 5° inclined to the longitudinal axis and adjacent to the inner wall, can be arranged in the interior of the container, which guide structures are arranged distributed over its length , In particular blade-like guide structures, which are designed to convey the heat transfer medium in the direction of the first end or the second end when the container is rotating.
  • the conveying device can be firmly connected to a receiving device arranged outside of the container.
  • the particles can also be supplied through the aperture opening or, alternatively, via a conveying device designed as a tube from the opposite end to the aperture opening.
  • a conveying device designed as a tube from the opposite end to the aperture opening.
  • the particles are fed into the container from the end of the container remote from the aperture opening.
  • blade-like guide structures can advantageously be arranged on the tube.
  • the conveying device can be designed to forward the heat transfer medium supplied at the first end of the container via the supply device to the second end.
  • the transport of the thermally conductive medium can advantageously take place via the blade-like conductive structures. This allows the low temperature particles to be fed to the second end of the container. This allows the tube to be cooled at the same time.
  • the conveying device can be designed to forward the heated heat transfer medium from the second end to the first end.
  • the heated particles of the heat transfer medium can also be fed to the end of the container facing away from the aperture opening.
  • the conveying device can be arranged in an upper area of the interior space in relation to a direction of gravity in the intended use state.
  • a firmly defined particle underlayer of the heat transfer medium film can be produced through the use of stationary blade-like guide structures, with the particles deposited above being lifted off and transported.
  • significantly larger tolerances can be permitted for the inner wall of the container, which are compensated for by the stationary particle sub-layer.
  • the conveying device is arranged with blade-like guide structures in the upper area of the interior, gravity and centrifugal force act on the particles in opposite directions.
  • the particle bed of the heat transfer medium is therefore the loosest in this area and advantageously allows lifting and transport.
  • the concentrated solar radiation from heliostats which are close to the tower and thus produce comparatively small focal spots, which can be shifted a little to the side via a target point strategy, mainly hits in this area. This allows the load on the holding device to be reduced.
  • the friction-enhancing device can be manufactured on the inner wall of the container by means of an additive manufacturing process and connected to the outer wall.
  • the friction-enhancing device can be constructed in the form of a grid on the inner wall of the container.
  • a grid that is usually welded onto the inner wall of the container as a friction-enhancing device can advantageously be replaced by structuring using an additive manufacturing process such as 3D printing.
  • the 3D printed device can be applied before or after the container is manufactured.
  • One advantage of using 3D printing is, for example, that any type of structure can be flexibly applied.
  • different structures or mesh widths of a grid-like structure can be arranged on different areas of the inner wall of the container for different particle diameters or to influence the movement in certain sections of the container.
  • the friction-enhancing device can be firmly connected to the inner wall of the container as a structure, so that it cannot lift off.
  • 1 in a schematic representation simplifies the functioning of a solar thermal power plant
  • 2 shows a solar radiation receiver device according to the prior art with a supply device with straight guide elements and a container in an isometric view
  • FIG. 3 shows a solar radiation receiver device according to the prior art with a supply device with straight guide elements, a container and a discharge device in a transparent representation
  • FIG. 4 shows the solar radiation receiver device according to FIG. 3 in a longitudinal section
  • Fig. 5 shows a feed device
  • FIG. 6 shows a longitudinal section through one end of a container with a discharge device according to the prior art
  • FIG. 7 shows a longitudinal section through a container with a supply device according to an embodiment of the invention.
  • Figure 8 is an enlarged isometric view of the feeder of Figure 7;
  • FIG. 9 shows a longitudinal section through a container with a supply device according to a further exemplary embodiment of the invention.
  • 10 shows a longitudinal section through a container with a supply device according to a further exemplary embodiment of the invention;
  • FIG. 11 shows a longitudinal section through a container with a supply device according to a further embodiment of the invention.
  • FIG. 12 is a plan view of a container with a supply device according to a further embodiment of the invention.
  • FIG. 13 shows a further longitudinal section through a container with a conveying device and blade-like guide structures arranged thereon according to a further exemplary embodiment of the invention
  • FIG. 14 shows a longitudinal section through the container according to FIG. 13;
  • FIG. 15 shows a cross-section through the container according to FIG. 13;
  • 16 is a plan view of an inner wall of a container with a friction-enhancing device arranged thereon according to a further embodiment of the invention.
  • FIG. 17 is an enlarged representation of the friction-enhancing device in plan view according to FIG. 16;
  • FIG. 18 shows a cross section through a discharge device according to a further exemplary embodiment of the invention with blade-like guide elements
  • FIG. 19 shows a longitudinal section through the discharge device according to FIG. 18;
  • 20 shows a longitudinal section through one end of a container with a discharge device according to a further exemplary embodiment of the invention with a pipe for discharging the heat transfer medium;
  • FIG. 21 shows an isometric representation of a discharge device according to a further exemplary embodiment of the invention with a discharge ring integrated into a radiation protection;
  • FIG. 22 shows a longitudinal section through a discharge device according to a further exemplary embodiment of the invention with a cover as a radial labyrinth seal;
  • FIG. 23 shows a cross section through a discharge device according to a further embodiment of the invention with a collecting device radially discharging the heat transfer medium;
  • FIG. 24 shows an enlarged longitudinal section through the discharge device according to FIG.
  • Figure 1 shows a schematic representation of the basic functioning of a solar thermal power plant 100.
  • the solar thermal power plant 100 includes a heliostat field 102 with a plurality of heliostats 104.
  • a heliostat 104 has a mirror surface 106 which can be aligned about at least two axes.
  • Solar radiation 108 can be directed onto a solar radiation receiver device 110 via the mirror surfaces 106 of the heliostat field 102 , in particular in a bundled manner. Solar radiation directed onto the solar radiation receiver device 110 is indicated in FIG. 1 with the reference number 112 .
  • the solar thermal power plant 100 comprises at least one tower receiver 114, in which the solar radiation receiver device 110 is arranged on a tower 116 at a distance from a floor 118 (relative to the direction of gravity g), ie is arranged elevated.
  • the heliostats 104 are also arranged on the floor 118 .
  • the solar radiation receiver device 110 is designed as a particle solar radiation receiver device, which is operated with particles as the heat transfer medium.
  • the particles are, for example, ceramic particles. In one embodiment, bauxite particles with typical diameters between 0.3 mm and 2 mm are used.
  • the heat transfer medium 210 used for transporting the heat received from the heliostat array 102 and fed into the solar radiation receiver device 110 of the tower receiver 114 is generally flowable or free-flowing.
  • the solar thermal power plant 100 includes a first circuit 120, which is a particle circuit. Particles are passed through a heat exchanger 122 in this first circuit 120 .
  • the first circuit 120 has a high-temperature branch 124 and a low-temperature branch 126 .
  • the low-temperature branch 126 leads from an output 128 of the heat exchanger 122 to an input 130 of the (particle) solar radiation receiver device 110.
  • the high-temperature branch 124 leads from an output 132 of the solar radiation receiver device 110 to an input 134 of the heat exchanger 122. Particles can thus be removed via the low-temperature branch 126 the solar radiation receiver device 110 and are heated there by solar radiation. Heated particles can be fed to the heat exchanger 122 via the high-temperature branch 124 and can give off heat to a second circuit 136 there.
  • a heat accumulator 138 (low-temperature heat accumulator) is optionally arranged in the low-temperature branch 126 .
  • a heat accumulator 140 (high-temperature heat accumulator) is optionally arranged in the high-temperature branch 124 .
  • the second circuit 136 is a turbine circuit.
  • a turbine 142 in particular a steam turbine, is arranged in it, which is coupled to an electrical generator 144 in order to generate electrical energy.
  • the second circuit 136 includes a high-temperature branch 146 which leads from an outlet 148 of the heat exchanger 122 to the turbine 142 . Furthermore, the second circuit 136 includes a low-temperature branch 150 which leads from the turbine 142 or a condenser 152 downstream of the turbine to an input 154 of the heat exchanger 122 .
  • a pump 156 which conveys a fluid through the second circuit 136 is arranged in the low-temperature branch 150 .
  • the water of the second circuit 136 is heated at the heat exchanger 122 and steam is thereby generated.
  • This steam is fed to the turbine 142 via the high-temperature branch 146 and expanded therein.
  • the thermal energy is converted into mechanical energy, which drives the electrical generator 144 to generate electricity.
  • a single stage turbine assembly is shown. It is also possible that the turbine arrangement is multi-stage.
  • a solar radiation receiver device 110 it is also possible, for example, for a solar radiation receiver device 110 to be used to generate process heat or to bring about chemical conversions or to produce fuels. Other applications are also conceivable.
  • FIG. 2 shows the solar radiation receiver device 110 according to the prior art in an isometric representation, while in FIG. 3 such a solar radiation receiver device 110 is shown in a transparent representation.
  • FIG. 4 shows the solar radiation receiver device 110 from FIG. 3 in a longitudinal section.
  • the known solar radiation receiver device 110 shown in Figures 2 to 4 comprises a container 200, which can be rotated about an axis of rotation 216 by means of a rotary drive device (not shown), as well as a supply device 300 for supplying the heat transfer medium 210 to an interior space 208 of the container 200 and a discharge device 400 to the Deriving the heat transfer medium 210 from the container 200 (recognizable in Figures 3 and 4), both of which are connected to this container 200.
  • the container 200 has a longitudinal axis 214 which is oriented parallel or at an acute angle of typically less than or equal to 80° to the direction of gravity g, which is symbolized in the figure by a vertical arrow.
  • the container 200 comprises in particular a hollow-cylindrical base body which comprises the circular-cylindrical interior space 208 surrounded by an outer wall 206 .
  • An inner wall 218 surrounding the interior space 208 is arranged at a distance from the outer wall 206 .
  • the container 200 has thermal insulation 220 between the outer wall 206 lying on the outside and the inner wall 218 .
  • the axis of rotation 216 encloses an angle 222 of typically approximately 30° with the direction of gravity g, with the longitudinal axis 214 expediently being aligned coaxially with the axis of rotation 216 .
  • a lower end 204 of the container 200 with respect to the direction of gravity g is open, so that an aperture opening 416 of the container 200 is formed, through which solar radiation 112 can enter the interior 208 of the container 200 .
  • the inner wall 218 of the container 200 is provided with a heat transfer medium 210 which is fed in via the feed device 300 through the feed opening 304 .
  • the heat transfer medium 210 spreads on the inner wall 218 and thereby forms a heat transfer medium film 212.
  • the heat transfer medium 210 is fed into the interior 208 of the container 200 via the feed device 300 which is arranged at the upper end 202 of the container 200 .
  • the heat transfer medium 210 can be transported, in particular conveyed, along the inner wall 218 from the end 202 at which it is fed to an end 204 of the container 200 opposite this end 202, on which the aperture opening 416 is arranged, in order to create a continuous flow of heat transfer medium 210 to apply solar radiation 112 and thus to heat.
  • the feed device 300 is formed from a conical front wall 302 and a conical rear wall 308 directed towards the interior 208 of the container 200, which are arranged coaxially and one above the other in the axial direction.
  • a cone angle 316 can be, for example, between 10° and 80°, preferably between 20° and 75°.
  • the cone angle 316 can conveniently be 45°, for example.
  • Guide elements 310 are arranged between the front wall 302 and the rear wall 308 and are aligned in the radial direction 238 and are connected to the rear wall 308 . In the prior art, these guide elements 310 are straight.
  • the heat transfer medium 210 is introduced into the feed device 300 via a feed opening 304 arranged in a tip of the conical front wall 302 and guided outwards between guide elements 310 in the radial direction 238 to the inner wall 218 of the container 200 .
  • the heat transfer medium 210 is distributed on the inner wall 218 and guided downwards in the direction of the discharge device 400 by gravity g.
  • the inner wall 218 of the container 200 usually has a friction-enhancing device 234 so that the heat transfer medium 210 adheres as well as possible to the inner wall 218 and thus has a sufficiently long residence time in the interior 208 to absorb sufficient heat from the solar radiation 112 .
  • the heated heat transfer medium 210 is then available for further use, in particular for generating electricity in the solar thermal power plant 100 (FIG. 1).
  • FIGS In particular for generating a uniform heat transfer medium film 212 in the solar radiation receiver device 110, an embodiment for influencing the movement of the particles along the inner wall 218 of the container 200 is proposed in FIGS.
  • Favorable configurations of the container 200 are described in FIGS.
  • the temperature distribution in the container 200 can thus be evened out.
  • the discharge device 400 for discharging the heat transfer medium 210 from the container 200 is arranged at the opposite end 204 of the container 200 and encloses the aperture opening 416, which serves as an entry point for the solar radiation 112.
  • FIG. 5 shows a supply device 300 of a solar radiation receiver device 110 according to the prior art in an exploded view.
  • the cone-shaped front wall 302 opens into the hollow-cylindrical supply opening 304 at the tip of the cone.
  • the rear wall 308, which is also cone-shaped, has a multiplicity of guide elements 310, which run outwards in the radial direction 238.
  • Front wall 302 and rear wall 308 are arranged on a mounting ring 330 in the intended assembly state.
  • FIG. 6 shows a longitudinal section through an end 204 of a container 200 with a discharge device 400 according to the prior art.
  • the discharge device 400 has a stationary discharge ring 408 in which the container 200 rotates about its axis of rotation 216 in the direction of rotation 236 .
  • the heat transfer medium 210 slides down the inner wall 218 of the container 200 in the direction of gravity g and is received by the discharge ring 408 .
  • the heat transfer medium 210 can be discharged from the discharge ring 408 in a suitable manner, for example via a pipe in the base of the discharge ring 408 (not shown). So that no heat transfer medium 210 escapes between the outer wall 206 and the discharge ring 408 in the radial direction 238 , the outer wall 206 and the discharge device 400 have a type of labyrinth seal 406 .
  • FIGS. 14 to 20 Some exemplary embodiments are proposed in FIGS. 14 to 20, which reduce the loss of particles when being discharged from the container 200.
  • FIGS. 9 to 13 An exemplary embodiment of a feed device 300 is described in FIGS.
  • Exemplary embodiments of discharge devices 400 are described in FIGS.
  • the supply devices 300 and discharge devices 400 described can be used in any combination with one another in a solar radiation receiver device 110 .
  • the feed devices 300 can be combined with known discharge devices.
  • the discharge devices 400 can be combined with known supply devices.
  • the proposed supply devices 300 and discharge devices 400 can be combined as desired with the favorable configurations of the container 200 described in FIGS. 9 to 13 or also with configurations of the container 200 from the prior art.
  • the exemplary embodiment of a supply device 300 described in FIGS. 7 and 8 has a cover 346 which adjoins the outer outer wall 206 of the container 200.
  • the supply device 300 advantageously enables a spatial distribution of the heat transfer medium 210, in particular the particles, to be evened out.
  • the basic functional structure of the solar radiation receiver device 110 with supply device 300, container 200, discharge device 400 largely corresponds to the known structure as described above. To avoid unnecessary repetition of the known elements, reference is made to the previous descriptions of the figures.
  • FIG. 7 shows the feed device 300 according to an exemplary embodiment of the invention in a longitudinal section through the container 200 with the feed device 300.
  • FIG. 8 shows an enlarged isometric view of the feed device 300.
  • the container 200 is closed at its first end 202 with a lid 346 as a front wall 302 .
  • the feed device 300 has a stationary particle feed 340, which is guided through the cover 346 in the axis of rotation 216 of the container 200 and which is designed to feed the heat transfer medium 210 into the interior 208 of the container 200 in a tangential direction on the inner wall 218 of the container 200 is.
  • the particle feed 340 is designed as a multiply bent tube 360 which is firmly connected to a receiving device arranged outside of the container 200 .
  • the tube 360 is guided perpendicularly through the cover 346, bent towards the inner wall 218 and runs on the inner wall 218 substantially tangentially to the inner wall 218.
  • the particle feeder 340 feeds the heat transfer medium 210 in the tangential direction at a peripheral speed of the container 200 .
  • the outlet 344 of the particle feed 340 is arranged on the inner wall 218 in a tangential direction in the direction of rotation 236 of the container 200 .
  • the particle feed 340 is guided through the cover 346 by means of a rotary feedthrough 348 .
  • the container 200 can rotate with the lid 346 attached thereto, while the particle feeder 340 is firmly connected to the receiving device of the feeder device 300 arranged outside.
  • the feed device 300 has a mounting flange 352 which is connected to the mounting bracket 354 of the receiving device.
  • the particles of the heat transfer medium 210 are fed to the particle feed 340 via the inlet 342 and pass through the tube 360 of the particle feed 340 into the interior 208 of the container 200.
  • the particles exit the tube 360 through the outlet 344 tangentially to the inner wall 218 of the rotating container 200 out.
  • the particles can be fed into the tube 360 at a defined speed, for example with compressed air, so that the particles then preferably exit the outlet 344 into the interior space 206 at the peripheral speed of the rotating container 200 .
  • the cover 346 has a removable insulating element 350 for mounting the particle feed 340 .
  • the insulation element 350 is integrated into the cover 346 in a form-fitting manner.
  • a rotationally symmetrical insulating element 358 is arranged on the rotary union 348 through the cover 346 from the outside on the pipe 360 . In this way, the particle feed 340 can be introduced into the container 200 with the insulating element 350 removed and fastened to the cover 346 with the rotary leadthrough 348 .
  • FIG. 9 shows a longitudinal section through a container 200 with a feed device 300 according to a further exemplary embodiment of the invention.
  • the front wall 302 of the container 200 is cone-shaped as is typical in the prior art. However, in this case the outlet of the particle feed is arranged directed from the inside towards the front wall 302 of the container 200 .
  • the particle feed 340 is not routed through the interior 208 of the container 200 to the inner wall 218 as in the previous exemplary embodiment. Rather, the front wall 302 of the container 200 is cone-shaped, so that the particles can be released directly onto the inside of the cone-shaped front wall 302 . The particles that have escaped then settle as a heat transfer medium film 212 on the inside of the front wall 302 and slide down it by gravity, so that the entire inside wall 218 of the container 200 is covered with the film 212 .
  • radial guide elements can be arranged on the cone of the front wall 302 for better distribution of the particles.
  • the curved feed pipe 360 of the particle feed 340 can additionally be protected from direct solar radiation by means of a cover plate 332 that is designed to be as small as possible.
  • the cover plate 332 can be fixedly mounted on the particle feeder 340, for example.
  • FIG. 10 shows a longitudinal section through a container 200 with a feed device 300 according to a further exemplary embodiment of the invention.
  • the particle feed 340 is radially spaced from the axis of rotation 216 of the container 200, in particular adjacent to the inner wall 218, through the front wall 302 designed as a cover 346.
  • the outlet 344 of the particle feed 340 can be arranged directed towards the inner wall 218 of the container 200 .
  • the feed device 300 is arranged eccentrically, so that the feed device 300 with the passage through the lid 346 is positioned directly in front of the inner wall 218 of the container 200 .
  • This seal can be designed as a labyrinth and/or sealing air seal 356 and/or another common sealing option.
  • the advantage of the eccentrically arranged tube 360 is that the particles can be released directly onto the inner wall 218 without a detour and a homogeneous particle film 212 is formed.
  • the tube 360 can also be protected from solar radiation with a cover plate (not shown).
  • FIG. 11 shows a longitudinal section through a container 200 with a feed device 300 according to a further exemplary embodiment of the invention.
  • the feed device 300 has a stationary particle feed 340, which is guided through the axis of rotation 216 of the container 200 through the front wall 302 designed as a cover 346 and which is used to feed the heat transfer medium 210 into the interior 208 of the Container 200 is formed in a tangential direction to the inner wall 218 of the container 200.
  • the inner wall 218 of the container 200 has a circumferential groove 334 directed outwards in the radial direction 238 .
  • the outlet 344 of the particle feed 340 is arranged so as to be directed towards the groove 334 .
  • FIG. 12 shows a plan view of a container 200 with a feed device 300 according to a further exemplary embodiment of the invention.
  • a radial position and/or an angular position about a longitudinal axis of the feed device 300 can advantageously be adjusted during operation depending on the operating point, for example a different speed of the container 200, a different particle mass flow, or a different irradiation power.
  • the use of several particle feeds 340 can be provided if, in the case of high mass flows, the transition between a single outlet 344 of a particle feed 340 and the particle running surface results in an intolerable quantity of scattered particles. This also favors the availability of the solar radiation receiver device 110 by creating redundancies.
  • a supply device 300 can again be seen, which is guided through the cover 346 centrally in the axis of rotation 216 of the container 200 .
  • the feed device 300 has two particle feeds 340 which are arranged rotated relative to one another by an angular offset 336 .
  • several particle feeds 340 can be used.
  • Another angular offset 336 between the particle feeds 340 can also be selected.
  • FIG. 13 shows a longitudinal section through a container 200 with a conveyor device 230 and blade-like guide structures 228 arranged thereon according to a further exemplary embodiment of the invention.
  • a further longitudinal section through the container 200 is shown in FIG. 14 and a cross section through the container 200 in FIG.
  • At least one conveyor device 230 is arranged in the interior space 208 of the container 200 and runs parallel or at a slight incline, in particular at an angle of less than 10°, preferably at an incline of less than 5°, to the longitudinal axis 214 and adjacent to the inner wall 218, which guide structures 228, in particular blade-like guide structures 228 having.
  • the guide structures 228 are designed to convey the heat transfer medium 210 in the direction of the first end 202 or the second end 204 of the container 200 when the container 200 is rotating.
  • the conveying device 230 is stationarily connected to a receiving device (not shown) arranged outside of the container 200 .
  • Conveying device 230 which for example has a holding device designed as a tube or lattice, can preferably be arranged so that it does not rotate and is fixedly supported at both ends.
  • Conveying device 230 like conductive structures 228, can preferably be made of silicon carbide, for example, resistant to high temperatures .
  • the holding device can be used to supply particles via the rear wall 308 .
  • a suitable discharge device can then be attached to the lower end of the tube, for example in such a way that the particles flow out in the direction of rotation of the cylinder wall 206 .
  • the particles of the heat transfer medium 210 can also be supplied via the edge area of the aperture opening 416 at the second end 204 of the container 200 .
  • the blade-like guide structures 228 are designed in such a way that the particles of the heat transfer medium 210, which move past the blades 228 with the rotating container wall 206, are displaced by approximately one blade height in the direction of the axis of rotation 216 during one revolution, for example in the direction of the rear wall 308, alternatively also toward aperture opening 416.
  • a firmly defined particle sub-layer of the heat transfer medium film 212 can be produced, with the particles deposited above being lifted off and transported.
  • significantly larger tolerances can be permitted for the inner wall 218 of the container 200, which are compensated for by the stationary particle sub-layer.
  • the conveying device 230 can also be designed to forward the heat transfer medium 210 supplied at the first end 202 of the container 200 on the supply side via the supply device 300 to the second end 204 on the discharge side.
  • the heat transfer medium 210 is supplied at a low temperature to the end 204 of the container 200 at which the heated heat transfer medium 210 is present.
  • the particles can also be fed through the aperture opening 416 or, alternatively, via the conveying device 230 from the opposite end 202 to the aperture opening 416.
  • the particles are fed into the container 200 from the end 202 of the container 200 facing away from the aperture opening 416.
  • Shovel-like guide structures 228 can advantageously be arranged on the conveying device 230 for this purpose.
  • the particles with a low temperature can be fed to the discharge-side end 204 of the container 200 by the conveying device 230 .
  • the conveying device 230 can be cooled at the same time.
  • the conveying device 230 can also be designed to convey the heated heat transfer medium 210 from the second end 204 on the aperture side to the first end 202 facing away from the aperture opening 416 . In this way, the temperature distribution in the container 200 can be made more uniform.
  • the particles can be removed, for example, by an overflow at the supply-side end 202 of the container 200 .
  • the conveying device 230 can be arranged in a direction of gravity g in an upper region 232 of the interior 208 of the container 200 in relation to the direction of gravity g in the intended use state.
  • the conveying device can also be arranged on a region of the inside 218 of the container 200 that is not irradiated by the solar radiation, ie on a side lying below with respect to the direction of gravity g.
  • Such an arrangement may be advantageous with certain granules, although the particles hold together more tightly.
  • the conveying device 230 is arranged with blade-like guide structures 228 in the upper area 232 of the interior space 208, gravity and centrifugal force act on the particles in opposite directions.
  • the particles in the heat transfer medium film 212 are therefore only relatively slightly compressed and advantageously allow them to be lifted off the heat transfer medium film 212 and transported further.
  • the concentrated solar radiation from heliostats 104 (FIG. 1) which are close to the tower receiver 114 (FIG. 1) and thus generate comparatively small focal spots that can be shifted somewhat to the side via a target point strategy, mainly strikes in this area 232. Thereby, the load on a holding device of the solar radiation receiving device 200 can be reduced.
  • the inner wall 218 of the container 200 can have a multiplicity of distributed guide structures 228, in particular blade-like guide structures 228, which are designed to convey the heat transfer medium 210 when the container 200 rotates in the direction of the supply-side end 202.
  • a multiplicity of distributed guide structures 228, in particular blade-like guide structures 228, which are designed to convey the heat transfer medium 210 when the container 200 rotates in the direction of the supply-side end 202.
  • Such an arrangement corresponds to a so-called rotary tube receiver with guide structures 228 that are moved along with it, which cause conveying with or against the force of gravity.
  • the heat transfer medium 210 is only present in a partial area of the container 200 and is displaced by the guide structures 228 when it slides down.
  • FIG. 16 shows a plan view of an inner wall 218 of a container 200 with a friction-enhancing device 234 arranged thereon according to a further exemplary embodiment of the invention.
  • FIG. 17 shows the friction-enhancing device 234 in an enlarged representation.
  • the friction-enhancing device 234 can advantageously be produced on the inner wall 218 of the container 200 by means of an additive manufacturing process and connected directly to the inner wall 208 of the container 200 .
  • the friction-enhancing device 234 can thus be designed in the form of a grid, for example, but other structures on the inner wall 218 of the container can also be advantageous.
  • a grid that is usually welded onto the inner wall 218 of the container 200 as a friction-enhancing device can advantageously be replaced by structuring using an additive manufacturing process such as 3D printing, for example.
  • the 3D printed device may be applied before or after the container 200 is fabricated.
  • any type of structuring can be applied flexibly.
  • different structures or mesh sizes of a grid-like structure can be arranged on different areas of the inner wall 218 of the container 200 for different particle diameters or to influence the movement of the particles in certain sections of the container 200 .
  • the friction-enhancing device 234 can be firmly connected to the inner wall 218 of the container 200 as a structure, so that it cannot lift off.
  • the exemplary embodiments of discharge devices 400 described in FIGS. 18 to 24 are each arranged on the discharge-side end 204 of the container 200.
  • the basic functional structure of the solar radiation receiver device 110 with supply device 300, container 200, discharge device 400 largely corresponds to the known structure as described above. To avoid unnecessary repetition of the known elements, reference is made to the previous descriptions of the figures.
  • the proposed feeding devices 300 according to the invention make it possible to reduce the risk of losing particles when being discharged from the container 200 .
  • FIG. 18 shows a cross section through a discharge device 400 according to a further exemplary embodiment of the invention with a device 402 with blade-like guide elements 410.
  • FIG. 19 shows a longitudinal section through the discharge device 400.
  • the device 402 has a multiplicity of guide elements 410 which protrude in a radial direction 238 and which are arranged on the discharge-side end 204 of the container 200 between the outer wall 206 and the discharge device 400 .
  • the device 402 rotates with the container 200 and engages with the guide elements 410 in the stationary discharge ring 408 .
  • the guide elements 410 are curved along their extension between the inner wall 218 and the outer wall 206 in the direction of the intended direction of rotation 236 .
  • a plurality of equidistantly arranged guide elements 410 can be provided, which, for example, are curved like a sickle.
  • Radial vanes are arranged as guide elements 410 at the discharge-side end 204 of the rotating container 200 at the transition to the static collecting ring 408 of the discharge device 400 .
  • Particles of the heat transfer medium 210 slide down the inner wall 218 of the container 200 into the discharge ring 408 of the discharge device 400.
  • the guide elements 410 deflect the particles and accelerate the particles in the rotating reference system so that they have a significantly lower speed in the stationary reference system.
  • the guide elements 410 deflect the particles and accelerate the particles in the rotating reference system so that they have a significantly lower speed in the stationary reference system.
  • the abrasion caused by the unavoidable impact of the particles in the collecting ring 408 can be reduced.
  • the abrasion on the collecting ring 408 can be greatly reduced in particular by the fact that the impact speed of the particles is reduced. If abrasion is too great, particles must be replaced from time to time. Furthermore, a loss of particles can be reduced. The lower the particle loss at this point, the fewer particles have
  • the guide elements 410 can also be designed to run radially outwards in a spiral shape from the inner wall 218 . Due to the spiral configuration of the guide elements 410, particles of the heat transfer medium 210 can be decelerated in a favorable manner in order to reduce abrasion due to collisions when the particles are removed. The lower the particle loss at this point, the fewer particles have to be returned to the system over time.
  • Figure 20 shows a longitudinal section through one end of a container 200 with a discharge device 400 according to a further exemplary embodiment of the invention with a pipe 412 at the discharge end 204 of the container 200 for discharging the heat transfer medium 210 from the container 200.
  • the tube 412 is firmly connected to a receiving device (not shown) arranged outside the container 200 .
  • the tube 412 is arranged at the discharge end 204 of the container 200 with a tube opening 414 counter to the intended direction of rotation 236 of the container 200 and is designed to receive the heated heat transfer medium 210 .
  • the container 200 has a bulge 432 which is directed radially outwards from the outer wall 206 and runs around the circumference of the container 200, into which the tube opening 414 protrudes.
  • the tube 412 can be arranged at the discharge-side end 204 of the container 200 with the tube opening 414 counter to the intended direction of rotation 236 of the container 200 .
  • the particles of the heat transfer medium 210 do not leave the rotating part of the container 200 as in the prior art by simply moving further axially via the lower end 204 of the cylindrical rotating container 200, where the particles are collected in a rotating ring. Rather, in this exemplary embodiment, the particles are taken up by a tube 412 that is stationary with respect to the environment. This is attached tangentially to the lower end 204 of the rotating container 200 .
  • a radially outwardly protruding bulge 432 may be provided at the end 204 of the outer wall 206 of the rotating container 200, into which the fixed tube 412 protrudes.
  • the bulge 432 significantly increases the probability that all particles will leave the container 200 via the tube 412 .
  • the tube 412 can be connected to a suction device, so that the heated heat transfer medium is sucked into the tube opening 414 .
  • the particles of the heat transfer medium 210 can be sucked off with negative pressure.
  • the manufacturing costs can be reduced, since significantly less insulation and heat-resistant material is required.
  • the suction can also be used to remove and separate dust, which means that both optical radiation losses due to dust in the air in the interior 208 of the container 200 can be minimized and that less dust is released into the environment.
  • a fluid flow, in particular compressed air, directed towards the pipe opening 414 can be provided, which is designed to transport the heated heat transfer medium 210 into the pipe opening 414 .
  • the particles of the heat transfer medium 210 can be blown in a targeted manner into the tangentially arranged tube 412 by means of compressed air. This can also be done in combination with sucking in the particles by vacuum.
  • FIG. 21 shows an isometric representation of a section of a discharge device 400 according to a further exemplary embodiment of the invention with a discharge ring 408 integrated into a radiation protection.
  • the device 402 has a discharge ring 408 with a channel 409 and a ring structure 436 delimiting the channel 409 radially on the outside, which has a discharge opening 434 for the exit of the heated heat transfer medium 210, ie the particles.
  • the ring structure 436 is integrated into a plate 418 designed as radiation protection against the incident solar radiation 112 .
  • the plate 418 can be formed with insulation and/or with a fluid cooling device on at least one side 442 .
  • the channel 409 serves to collect the particles of the heat transfer medium 210.
  • the particles can be transferred to the ring structure 436 lying radially on the outside, from where the particles can then be passed on via the discharge opening 434.
  • the discharge ring 408 with the channel 409 and the ring structure 436 of the discharge device 400 with the radiation protection can be integrated in the plate 418, whereby manufacturing costs and assembly work can be reduced.
  • the plate 418 of the discharge device 400 integrated into the radiation protection can advantageously be insulated on both sides and, for example, actively cooled via a fluid cooling device, so that the support structure does not fail.
  • the discharge ring 408 with channel 409 and the ring structure 436 can be applied as a collecting ring, while the other side 442 of the plate 418 can be designed directly as radiation protection insulation. As a result, production costs for the discharge device 400 can be further reduced.
  • FIG. 22 shows a longitudinal section through a discharge device 400 according to a further exemplary embodiment of the invention with a cover 420 which is designed as a radial labyrinth seal.
  • the discharge device 400 comprises a device 402 which has a cover 420 which is arranged on the discharge-side end 204 of the container 200 and acts in the radial direction. Furthermore, the device 402 has a shoulder 440 which is directed radially outwards at the discharge-side end 204 of the wall of the container 200 and protrudes radially outwards beyond the outer wall 206 .
  • the step 440 is surrounded by the cover 420 in the form of a labyrinth cover. Furthermore, the cover 420 is surrounded by a thermal insulation 424 acting in the radial direction 238 and in the axial direction 214 .
  • the cover 420 can be formed, for example, as a radial labyrinth seal made of sheet metal. As a result, the sealing of the discharge device 400 can be improved and particle loss through particles escaping from the discharge device 40 can be prevented. The lower the particle loss at this point, the fewer particles have to be returned to the system over time. In this way, operating costs could be further reduced.
  • the shoulder 440 arranged at the discharge-side end 204 of the wall of the container 200 advantageously represents a further improvement in the sealing between the stationary discharge device 400 and the outer wall 206 of the rotating container 200.
  • FIG. 23 shows a cross section through a discharge device 400 according to a further exemplary embodiment of the invention with a collecting device 426 radially discharging the heat transfer medium 210.
  • FIG. 24 shows an enlarged longitudinal section through the discharge device 400.
  • the discharge device 400 comprises a device 402 which has a collecting device 426 leading away in the radial direction 238 outwards, in particular spirally, from the outer wall 206 at the discharge-side end 204 of the container 200 .
  • the collection device 426 which is designed as part of a discharge ring, is firmly connected to a receiving device arranged outside of the container 200, and is therefore installed in a stationary manner.
  • the collecting device 426 has an inlet opening 430 which is oriented towards the container 200 counter to the intended direction of rotation 236 of the container 200 and which is used to discharge the heated heat transfer medium 210 .
  • a discharge ring 408 (not shown) running around the circumference of the outer wall 206 can be arranged, into which the collecting device 426 opens with its inlet opening 430.
  • the end of the inlet opening 429 is approximately in the area in which the collection device 426 is guided away from the wall 206 of the container 200 .
  • the outlet area 428 in which the particles of the heat transfer medium 210 leave the container, is in the front area of the discharge device 400, beginning at the inlet opening 430.
  • the particle exit which actually occurs only locally, is used to discharge the particles locally there.
  • the natural particle trajectory in the rotating container 200 is reproduced in order to discharge the particles from the container 200 .
  • the collision speed of particles to the inlet opening 430 of a discharge pipe as a collecting device 426 can be reduced.
  • erosion of particles and collection device 426 can be reduced and potential dust formation reduced. The lower the particle loss at this point, the fewer particles have to be returned to the system over time.
  • a reduced ring-shaped collecting device 426 for the particles can also be used circumferentially in order to discharge other particles, for example when the operating mode changes or when there is wind.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un appareil récepteur de rayonnement solaire (110) pour chauffer un milieu de transfert de chaleur (210) dans une centrale héliothermique (100), comprenant un récipient (200) avec une paroi externe (206) et un intérieur (208), un dispositif d'alimentation (300) pour délivrer le milieu de transfert de chaleur (210), un dispositif de décharge (400) pour drainer le milieu de transfert de chaleur (210) et une ouverture (416) pour admettre un rayonnement solaire, le récipient (200) pouvant tourner autour d'un arbre rotatif (216) et le milieu de transfert de chaleur (210) formant un film de milieu de transfert de chaleur (212). Le récipient (200) est fermé à sa première extrémité (202) par un couvercle (346). Le dispositif d'alimentation (300) inclut un dispositif d'alimentation en particules (340) qui pénètre dans le couvercle (346) à l'intérieur de l'arbre rotatif (216) du récipient (200) et qui est conçu pour amener le milieu de transfert de chaleur (210) dans l'intérieur (208) du récipient (200) dans une direction tangentielle sur la paroi interne (218) du récipient (200).
EP21782646.0A 2020-12-07 2021-09-10 Appareil récepteur de rayonnement solaire pour chauffer un milieu de transfert de chaleur dans une centrale héliothermique Pending EP4256248A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102020132496 2020-12-07
DE102020132497 2020-12-07
DE102020132498 2020-12-07
PCT/EP2021/075014 WO2022122204A1 (fr) 2020-12-07 2021-09-10 Appareil récepteur de rayonnement solaire pour chauffer un milieu de transfert de chaleur dans une centrale héliothermique

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EP4256248A1 true EP4256248A1 (fr) 2023-10-11

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Application Number Title Priority Date Filing Date
EP21782646.0A Pending EP4256248A1 (fr) 2020-12-07 2021-09-10 Appareil récepteur de rayonnement solaire pour chauffer un milieu de transfert de chaleur dans une centrale héliothermique
EP21782645.2A Pending EP4256247A1 (fr) 2020-12-07 2021-09-10 Appareil récepteur de rayonnement solaire pour chauffer un milieu de transfert de chaleur dans une centrale héliothermique
EP21782889.6A Pending EP4256249A1 (fr) 2020-12-07 2021-09-10 Appareil récepteur de rayonnement solaire pour chauffer un agent caloporteur dans une centrale héliothermique

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Application Number Title Priority Date Filing Date
EP21782645.2A Pending EP4256247A1 (fr) 2020-12-07 2021-09-10 Appareil récepteur de rayonnement solaire pour chauffer un milieu de transfert de chaleur dans une centrale héliothermique
EP21782889.6A Pending EP4256249A1 (fr) 2020-12-07 2021-09-10 Appareil récepteur de rayonnement solaire pour chauffer un agent caloporteur dans une centrale héliothermique

Country Status (3)

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EP (3) EP4256248A1 (fr)
DE (3) DE112021006345A5 (fr)
WO (3) WO2022122204A1 (fr)

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE707174C (de) * 1936-03-17 1941-06-16 Georg Zotos Dipl Ing Dr Verfahren und Einrichtungen zum Durchsetzen von Arbeitsgut in Schnelldrehoefen
DE3164457D1 (en) * 1980-11-17 1984-08-02 Smidth & Co As F L Method and apparatus for thermally treating pulverulent material
EP0509286A1 (fr) * 1991-04-16 1992-10-21 Schweizerische Eidgenossenschaft PAUL SCHERRER INSTITUT Réacteur
US5947114A (en) * 1995-02-15 1999-09-07 Yeda Research And Development Company Ltd. Central solar receiver with a multi component working medium
DE102010062367A1 (de) 2010-12-02 2012-02-16 Deutsches Zentrum für Luft- und Raumfahrt e.V. Solarstrahlungsempfängervorrichtung und Verfahren zur solaren Erhitzung von Wärmeträgermedium
DE102014106320B4 (de) 2014-05-06 2020-10-29 Deutsches Zentrum für Luft- und Raumfahrt e.V. Solarstrahlungsempfängervorrichtung
DE102017219374B4 (de) * 2017-10-27 2019-05-29 Deutsches Zentrum für Luft- und Raumfahrt e.V. Solarreceiver sowie Verfahren zum Betrieb eines Solarreceivers
CN211084796U (zh) * 2019-11-22 2020-07-24 保靖县中锦环保有限公司 一种防堵塞回转窑

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WO2022122204A1 (fr) 2022-06-16
DE112021006340A5 (de) 2023-10-19
EP4256249A1 (fr) 2023-10-11
EP4256247A1 (fr) 2023-10-11
WO2022122202A1 (fr) 2022-06-16
DE112021006345A5 (de) 2023-10-19
WO2022122203A1 (fr) 2022-06-16
DE112021006337A5 (de) 2023-10-19

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