WO2015169765A2 - Dispositif capteur de rayonnement solaire - Google Patents

Dispositif capteur de rayonnement solaire Download PDF

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Publication number
WO2015169765A2
WO2015169765A2 PCT/EP2015/059748 EP2015059748W WO2015169765A2 WO 2015169765 A2 WO2015169765 A2 WO 2015169765A2 EP 2015059748 W EP2015059748 W EP 2015059748W WO 2015169765 A2 WO2015169765 A2 WO 2015169765A2
Authority
WO
WIPO (PCT)
Prior art keywords
container
heat transfer
transfer medium
solar radiation
radiation receiver
Prior art date
Application number
PCT/EP2015/059748
Other languages
German (de)
English (en)
Other versions
WO2015169765A3 (fr
Inventor
Reiner Buck
Lars Amsbeck
Wei Wu
Ralf Uhlig
Birgit Gobereit
Miriam EBERT
Original Assignee
Deutsches Zentrum für Luft- und Raumfahrt e.V.
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 für Luft- und Raumfahrt e.V. filed Critical Deutsches Zentrum für Luft- und Raumfahrt e.V.
Priority to EP15722142.5A priority Critical patent/EP3140598A2/fr
Publication of WO2015169765A2 publication Critical patent/WO2015169765A2/fr
Publication of WO2015169765A3 publication Critical patent/WO2015169765A3/fr

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Classifications

    • 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
    • F24S80/20—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
    • F24S2020/23—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants movable or adjustable
    • 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 present invention relates to a solar radiation receiver device, by means of which heat transfer medium, for example (solid) particles, in particular ceramic particles, using solar radiation to high temperatures, for example up to 1000 ° C, is heated.
  • heat transfer medium for example (solid) particles, in particular ceramic particles
  • the present invention has for its object to provide a solar radiation receiver device, which is simple and inexpensive to produce and efficiently operable.
  • a solar radiation receiver device comprising a container comprising a wall and an inner space surrounded by the wall, wherein the solar radiation receiver device comprises a supply device for supplying a heat transfer medium to the interior of the container, wherein the container by means of a rotary drive device of the solar radiation receiver device is rotatable about an axis of rotation such that the heat transfer medium can be guided along an inner side of the wall of the container to form a heat transfer medium film, and wherein the solar radiation receiver device comprises at least one overflow element for forming a rotationally symmetrical inner surface of the heat transfer medium film.
  • the wall of the container can preferably with - Are manufactured relatively inexpensively, since the quality and quality of the heat transfer medium film can be ensured preferably by means of a cost overflow element.
  • the rotationally symmetrical inner surface of the heat transfer medium film is substantially independent of unevennesses of the inside of the wall and the container and / or substantially independent of a thickness or a thickness profile of the heat transfer medium film available.
  • the heat transfer medium is free-flowing or free-flowing.
  • the heat transfer medium comprises particles or particles of sintered bauxite or is formed from particles or particles of sintered bauxite.
  • the particles or particles preferably have an average particle diameter of about 250 ⁇ to about 1.8 mm.
  • the heat transfer medium prefferably, in the heat transfer medium to at least about 800 ° C, in particular to at least about 1000 ° C, no agglomeration of particles or particles.
  • the particles or particles preferably have a high sphericity, in particular greater than about 0.8, in particular greater than about 0.9.
  • the particles or particles are thermoshock resistant.
  • This downstream end of the wall of the container of the wall may in particular be a respect to the direction of gravity upper end of the wall of the container.
  • At least one overflow element is preferably formed substantially annular and preferably protrudes inwardly from the wall of the container in the direction of the axis of rotation.
  • the overflow element is a damming element for damming up the heat transfer medium and / or a base material for forming a base layer.
  • the overflow element has an overflow edge over which the heat transfer medium can be carried away.
  • the overflow edge is in particular a border of a circular opening in the overflow element arranged concentrically with the axis of rotation of the container.
  • the heat transfer medium is preferably accumulable upstream of the overflow element, so that the heat transfer medium is dammed up in particular before the overflow element.
  • the heat transfer medium preferably passes over selectively. Since this overflow preferably takes place uniformly over the overflow edge, a very high rotational symmetry of the inner surface of the heat transfer medium film can be made possible by exactly rotationally symmetrical design of the overflow edge. - -
  • the inner surface of the heat transfer medium film is in particular the surface of the heat transfer medium film facing the axis of rotation of the container.
  • the heat transfer medium can be guided in particular through the concentric opening in the overflow element, which is surrounded by the overflow edge.
  • a solar radiation receiver device which comprises a container which comprises a wall and an interior surrounded by the wall, wherein the solar radiation receiver device comprises a supply device for supplying a heat transfer medium to the interior of the container, wherein the container by means of a rotary drive device of Solar radiation receiver device is rotatable about an axis of rotation, that the heat transfer medium along a heat transfer medium film on an inner side of the wall of the container along feasible, and wherein the solar radiation receiver device comprises a flowable or free-flowing base material for forming a base layer on the inside of the wall of the container the heat transfer medium to form a heat transfer medium film on the base layer on the inside of the wall of the container is guided along.
  • This solar radiation receiver device preferably has one or more of the features and / or advantages described in connection with the further solar radiation receiver devices.
  • the base layer preferably forms an intermediate layer between the wall of the container and the heat transfer medium film.
  • the heat carrier medium film is preferably formed on the base layer and thus on the side facing away from the wall of the container and the axis of rotation facing side of the base layer.
  • the base layer preferably has, at least in sections, a thickness of a multiple of the average particle diameter of particles of the base material. It may in particular be provided that the base layer comprises a plurality of layers of particles of the base material and preferably has a thickness which approximately corresponds to the manufacturing tolerances of the container wall of the container.
  • the base material preferably has a greater mass density and / or volume density than the heat transfer medium.
  • the base material has a higher angle of repose than the heat transfer medium.
  • the base layer has a greater mass density and / or volume density than the heat transfer medium film.
  • the solar radiation receiver device comprises a conveying device for conveying the heat transfer medium in a conveying direction running parallel to the axis of rotation of the container.
  • the conveying direction preferably comprises a linear movement device, by means of which the container is linearly movable, in particular at least approximately parallel to the axis of rotation of the container.
  • the container is preferably movable by means of the linear movement device in a first movement direction with a first acceleration and / or a first speed and in a second movement direction opposite to the first movement direction with a second acceleration and / or a second speed.
  • the second acceleration and / or the second speed is preferably higher than the first acceleration and / or the first speed.
  • the first direction of movement is preferably the conveying direction of the conveying device.
  • the heat carrier medium is moved together with the container during the movement in the first direction of movement, but the container is moved more rapidly in the first direction of movement the second direction of movement slipped below the heat transfer medium and thus takes place at repeated repetition of this movement of the container, in particular at cyclic repetition of this movement, an effective promotion of the heat transfer medium in the conveying direction.
  • the solar radiation receiver device preferably comprises a control device, by means of which a rotational movement of the container about the axis of rotation can be coordinated with the linear movement of the container.
  • the rotational movement of the container about the axis of rotation with the linear movement of the container is coordinated by means of the control device that the rotational frequency of the container is increased or if the container is moved linearly in a first direction of movement, and that the rotational frequency of the container is reduced or when the container is linearly moved in a second direction of movement opposite to the first direction of movement.
  • the heat transfer medium along a conveying direction thereof within the container against the direction of gravity is conveyed upwards.
  • the heat transfer medium along a conveying direction thereof within the container in the direction of gravity is conveyed downwards. - -
  • a solar radiation receiver device comprising a container comprising a wall and an interior space surrounded by the wall, wherein the solar radiation receiver device comprises a supply device for supplying a heat transfer medium to the interior of the container, wherein the container by means of a rotary drive device of the solar radiation receiver device is rotatable about an axis of rotation that the heat transfer medium along a heat transfer medium film on an inner side of the wall of the container along feasible, and wherein the solar radiation receiver device comprises at least one actuator, by means of which generated by the rotary drive device rotational movement of the container , In particular, a position and / or movement of the axis of rotation, can be influenced.
  • This solar radiation receiver device preferably has one or more of the features and / or advantages explained in connection with the further solar radiation receiver devices.
  • an imbalance in particular a rotational speed imbalance, of the container can preferably be generated or compensated.
  • a position and / or movement of the axis of rotation can be influenced by means of at least one actuator of the solar radiation receiver device.
  • the solar radiation receiver device comprises a sensor device for determining the position and / or movement of the axis of rotation and / or of the container.
  • the at least one actuator can be controlled, for example, for selectively influencing the heat transfer medium film.
  • the at least one actuator can be controlled in such a way that a homogeneous heat transfer medium film is formed.
  • the supply device of the solar radiation receiver device preferably comprises one or more feed elements, by means of which particles of the heat transfer medium can be supplied to the container in a targeted manner with one or more predetermined directions of movement and / or movement speeds.
  • the formation of a uniform heat transfer medium film can be optimized in this way.
  • the solar radiation receiver devices according to the invention can have one or more of the features and / or advantages described below:
  • a conveying device of the solar radiation receiver device for conveying the heat transfer medium along the inside of the wall can, for example, function according to a so-called Scblinirinnen principle.
  • the container is moved together with the heat transfer medium parallel to the axis of rotation slowly upwards. Subsequently, the container is moved parallel to the axis of rotation quickly downwards, so that the particles are not moved or only to a small extent due to the inertia. Overall, this results in a relative movement of the particles of the heat transfer medium against the direction of gravity upwards.
  • the conveying device is operated according to a so-called hammer drill method, in which short, intense impacts are provided opposite to the conveying direction and slow movements in the conveying direction.
  • a contact pressure of the heat transfer medium can be varied on the wall.
  • the speed can be reduced during the rapid movement of the container counter to the conveying direction, so that the heat transfer medium is easier to move relative to the container, in particular so that the particles (particles) of the heat transfer medium can easily slip.
  • an oscillation in the axial direction and an oscillation in the circumferential direction are superimposed and / or coupled together.
  • an oblique impact spring may be provided to selectively influence a movement of the container both in the axial direction and in the circumferential direction.
  • the solar radiation receiver device is preferably designed as a self-compensated and / or freely oscillating system, so that, in particular, a vibration is not transmitted to the outside.
  • At least one lateral inlet pipe (supply element) can be provided, by means of which - -
  • Heat transfer medium with the rotational speed in the circumferential direction can be fed.
  • inlet pipes feed elements
  • the wall of the container may in particular be designed as a cylindrical inliner or as a conical inliner.
  • the overflow element is in particular a co-rotating aperture ring.
  • the wall of the container comprises a screw profile and that the container alternately accelerates quickly and slow delays quickly. According to the Scblinirinnentouch or hammer drill method described above can thereby be carried out a rotary promotion of the heat transfer medium in the conveying direction.
  • a system may be designed to be preferably vibration-free or vibration-free to the outside.
  • the vibration is preferably limited to an inner particle guide (wall of the container). As a result, the moving masses can be kept low to achieve a smooth running.
  • rapid mass flow variations can be carried out by means of the feed device.
  • this can be used to generate an advantageous - - be used inhomogeneous mass flow distribution over the circumference, if prevail over the outlet circumference large temperature differences.
  • the overflow element is preferably designed as a diaphragm.
  • an inner tube formed from particles of the heat transfer medium or the base material is preferably formed on the wall of the container, on which the layer actually to be heated, in particular the heat transfer medium film, is transported.
  • the solar radiation receiver device has one or more sensor devices, for example for detecting a non-circular run of the container, in particular due to imbalances.
  • the sensor devices can be drawn a conclusion on the particle distribution, in particular the spatial distribution and formation of the heat transfer medium film.
  • a heat transfer medium film preferably a coherent heat transfer medium film, can be formed on the wall due to the centrifugal forces caused by rotation of the container.
  • the speed is preferably chosen so high that results in an optically dense or nearly dense heat transfer medium film over the entire (inner) circumference of the wall.
  • Radiation receiver device for example, in partial load operation or full load operation done.
  • a solar radiation receiver device can be used, for example, for the exclusive solar operation of high temperature processes such as microturbines for solar power generation. Heated heat transfer medium can be stored easily. It can then be an on-demand service provision.
  • the angular position to the direction of gravity and the rotational speed of the container are adapted to one another.
  • information about the properties of the heat transfer medium and the wall, in particular the friction properties can also be used for adaptation. If, for example, a solar radiation receiver device according to the invention is used in conjunction with a heliostat field, then usually the angle to the direction of gravity is predetermined. If then the heat transfer medium and the wall is given, then by appropriate choice or setting, optionally also variable setting, the rotational speed (or speed) of the heat transfer medium film can be generated.
  • the heat transfer medium is preferably formed by particles and / or a fluid (in particular a liquid).
  • the particles are, in particular, solid particles, in particular ceramic particles. It is also possible that a liquid such as a liquid salt or a salt mixture (such as a mixture of NaN0 3 and KN0 3 ) is used as the heat transfer medium.
  • a speed of the container is greater than 80% of the root of the ratio of the gravitational constant to an inner radius of the container, wherein the inner radius of the container, if it has different inner radii, in particular the smallest inner radius. - - is turned.
  • an optically dense or approximately dense heat transfer medium film can be achieved over the entire circumference of the wall of the container. It is particularly favorable when the speed is greater than 70% of the speed at which the entire heat transfer medium adheres to the wall.
  • a device for influencing the movement characteristic of the heat transfer medium in the interior is provided.
  • a correspondingly fast rotation of the container is provided, so that the centrifugal force presses the heat transfer medium against the wall.
  • the duration of stay can for example also be defined or controlled by vibrations and / or by providing special running paths. It can then be achieved preferably a greater temperature spread between the inlet and outlet of the heat transfer medium to the container and thereby in turn can preferably increase the receiver efficiency.
  • the device for influencing the movement characteristic is designed as a device for controlling, in particular variable control, the residence time of the particles in the interior space.
  • the efficiency can be increased, with an adaptation to changing conditions such as changing solar irradiation conditions is possible.
  • the axis of rotation is oriented parallel or at an acute angle less than or equal to 80 ° to the direction of gravity. This gives an optimized efficiency.
  • the axis of rotation can in principle also be offset with respect to the axis of the container.
  • the axis of rotation is oriented coaxially with the axis of the container. - -
  • the rotation of the container is variably variable in time in order to adapt to different conditions, in particular solar irradiation conditions, in order to enable, for example, different partial load operations.
  • a vibration device is provided, through which the container or one or more subregions of the container are vibratable.
  • this makes it possible to produce a homogeneous heat transfer medium film.
  • a combination of a vibratory movement with a suitable rotational movement can preferably set, control and / or regulate a desired residence time.
  • a residence time can preferably also be set locally.
  • the vibration device may be an additional device and / or the imbalance of a drive is used to generate vibrations.
  • the vibration device is designed so that the container or one or more portions of the container along the axis of the container are vibratable and / or a spatial position of the axis is temporally variable. It can then be carried out, for example, a tumbling motion.
  • a vibration of the heat transfer medium against gravity is possible because it provides for fluidization, especially when particles are used as the heat transfer medium.
  • This is particularly advantageous when the container has sloping walls, that is, when the diameter varies over a longitudinal axis of the container.
  • the vibration device is designed so that the vibration is temporally and / or spatially controllable. - -
  • the wall has one or more defined running paths or one or more guide elements for heat transfer medium.
  • the heat transfer medium is preferably performed on a specific path within the container and / or the film formation is improved.
  • the path for passing through the container can preferably be increased, so that preferably also increases the residence time of the heat transfer medium in the container.
  • a running path or guide element has web elements which lie in a plane perpendicular to the axis of the container or at an angle of at most 30 ° to this plane.
  • Heat transfer medium preferably contacts the web elements.
  • the track elements provide in particular for a guide. If the web elements lie in a plane perpendicular to the axis of the container or at an angle of at most 30 ° to this plane, then it is for example possible to give the heat transfer medium a tangential velocity component.
  • the travel within the container can preferably be increased.
  • steps and / or grooves and / or ribs and / or dents and / or wall roughnesses are formed on the wall.
  • the film formation can be improved and the residence time in the interior can be increased.
  • the device for influencing the movement characteristic comprises a field generating device for generating an electric field and / or magnetic field, wherein the heat transfer medium comprises particles and wherein the particles are electrically and / or magnetically - - are loaded. It can thereby form Lorentz forces (when the particles are electrically charged and a magnetic field acts on them) or generate electrostatic forces (when the particles are electrically charged and electric fields act on them), through which a suitable movement of the particles on the outside towards the wall. These are thereby pressed against the wall. This can increase the length of stay. It is also possible, for example, to influence the duration of residence of magnetically charged particles by appropriate choice of the Curie temperature.
  • the Curie temperature is reached within the container or when the container exits, then no magnetic coupling of the particles is more to the corresponding field and the particles can then be easily removed from the container.
  • the force between the field generator field and the magnetically charged particle is effectively turned off intrinsically at the Curie temperature.
  • an envelope of the wall on the interior has a varying cross-section and in particular is conical.
  • the interior tapers in the direction of gravity, so that the container is funnel-shaped.
  • the Solarstrahlungsbeetzschung takes place in particular via one side of the container, which has the smaller diameter.
  • the container has a coupling region for heat transfer medium and a coupling region for heat transfer medium.
  • the coupling region is located above the coupling-out region with respect to the direction of gravity. At the coupling area "cold” heat transfer medium is coupled and at the coupling-out area "hot”, heated by solar radiation heat transfer medium is decoupled. The heat transfer medium is carried out in the direction of gravity through the container. - -
  • the heat transfer medium is also possible in principle for the heat transfer medium to be guided against the direction of gravity in the container, that is to say the heat transfer medium is coupled into the container at the bottom in relation to the direction of gravity and is coupled out with respect to the direction of gravity.
  • This can be achieved in particular by a combination of vibration, rotation, suitable wall formation and / or periodic axial displacement of the container.
  • a supply device for heat transfer medium to the container by means of which heat transfer medium with an adapted peripheral speed can be fed to the container. This can be achieved with appropriate adjustment of the peripheral speed in the coupling of the heat transfer medium into the container that the film formation is minimally disturbed by the feed.
  • the supply device is in particular connected upstream of an adjustment device for the mass flow of the heat transfer medium. Both mass flow and peripheral speed can then be set individually.
  • a discharge device for heat transfer medium is provided by the container, by means of which heat transfer medium with an adapted peripheral speed can be discharged from the container. As a result, the film formation is minimally disturbed by the discharge.
  • Fig. 1 is a schematic representation of the operation of a solar thermal power plant
  • Fig. 2 is a schematic perspective view of a first embodiment of a solar radiation receiver device of the solar thermal power plant, in which provided with actuators bearing points for supporting a rotatable container of the solar radiation receiver device are provided;
  • Fig. 3 is a schematic vertical section through a second embodiment of a solar radiation receiver device in which a base layer of a base material and an overflow element are provided for forming a uniform heat transfer medium film;
  • Fig. 4 is a schematic perspective view of a third embodiment of a solar radiation receiver apparatus in which a container of the solar radiation receiver device is movable parallel to an axis of rotation thereof opposite to the direction of gravity to move the container together with the heat transfer medium disposed therein against the direction of gravity;
  • Fig. 5 is a corresponding schematic perspective view of Figure 3 of the third embodiment of the solar radiation receiver device, wherein the container is parallel to the axis of rotation of the same in the direction of gravity downwardly movable without taking the heat transfer medium;
  • Fig. 6 is a schematic perspective view of a fourth embodiment of a solar radiation receiver device in which storage rollers are provided for active storage of the rotatable container of the solar radiation receiver device.
  • An embodiment of a solar thermal power plant which in Fig. 1, shown schematically at 100, includes a heliostat array 102 having a plurality of heliostats 104.
  • a heliostat 104 has a mirror surface 106 that is alignable about at least two axes.
  • Solar radiation 108 can be directed in a focused manner onto a solar radiation receiver device 110 via the mirror surfaces 106 of the heliostat field 102.
  • Solar radiation directed at the solar radiation receiver device 110 is shown in FIG. 1 indicated by the reference numeral 112.
  • the solar thermal power plant 100 includes (at least) a tower receiver 114 in which the solar radiation receiver device 110 is disposed on a tower 116 spaced from a floor 118 (with respect to the direction of gravity g), ie, elevated.
  • the heliostats 104 are also disposed on the floor 118.
  • the solar radiation receiver device 110 is a particle solar radiation receiver device which is operated with particles as a heat transfer medium.
  • the particles are, for example, ceramic particles.
  • bauxite particles with typical diameters between 0.3 mm to 2 mm are used.
  • the solar thermal power plant 100 includes a first circuit 120, which is a particle cycle. In this first cycle 120 particles are passed through a heat exchanger 122.
  • 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
  • a heat storage 138 (low-temperature heat storage) is arranged.
  • a heat accumulator 140 (high-temperature heat accumulator) to be 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, which is coupled to generate electrical energy to an electric generator 144.
  • the second circuit 136 includes a high temperature branch 146 which leads from an exit 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 turbine 152 downstream of the turbine to an input 154 of the heat exchanger 122.
  • a pump 156 is arranged, which conveys a fluid through the second circuit 136.
  • the fluid of the second circuit 136 (in particular water) is heated and thereby generates steam.
  • This steam is supplied via the high-temperature branch 146 of the turbine 142 and relaxed therein.
  • the thermal energy is converted into mechanical energy, which drives the electric generator 144 to generate electricity.
  • the steam is released and finally condenses on the condenser 152 to water.
  • This condensate is returned to the heat exchanger 122 in the low-temperature branch 150 for renewed steam generation.
  • a single-stage turbine arrangement is shown. It is also possible that the turbine arrangement is multi-stage.
  • a solar radiation receiver device 110 may be used to generate process heat or to effect chemical conversions or to produce fuels. Other applications are conceivable.
  • a first embodiment of a solar radiation receiver device 110 (see FIG. 2) comprises a container 158, which is rotatable about a rotation axis 162 by means of a rotary drive device 160.
  • the container 158 comprises, in particular, a hollow-cylindrical basic body 164 which surrounds a circular-cylindrical interior 166.
  • the rotation axis 162 encloses with the direction of gravity g an angle of, for example, about 30 °.
  • a with respect to the direction of gravity g lower end 168 of the container 158 is open, so that an inlet opening 170 of the container 158 is formed.
  • Solar radiation 112 can reach the interior 166 of the container 158 through this inlet 170.
  • an inner surface of a wall 172 of the main body 164 of the container 158 is provided with a heat transfer medium.
  • the heat transfer medium spreads on the wall 172 and thereby forms a (still to be described) heat transfer medium film.
  • the heat transfer medium is transported from the end 168, on which the inlet opening 170 is arranged, to an end 174 of the base body 164 of the container 158 opposite this end 168, in particular conveyable, in order to apply a continuous stream of heat transfer medium to solar radiation 112 and thus to heat it ,
  • the heated heat transfer medium is then available for further use, in particular for power generation in the solar thermal power plant 100 available.
  • the solar radiation receiver device 110 preferably comprises several possibilities for influencing the movement of the container 158.
  • the first embodiment of the solar radiation receiver device 110 in particular a plurality of bearings 176 are provided for supporting the container 158, which have actuators 178 for influencing the movement of the container 158.
  • the actuators 178 may be, for example, vibration devices or other actuators.
  • a rotational movement of the container 158 can be made uniform, in particular by compensating imbalances of the container 158 by suitable actuation of the actuators 178 of the bearings 176.
  • unbalance or non-circular movements of the container 158 can be generated by means of the actuators 178 in a targeted manner in order to selectively influence a movement of the heat transfer medium within the container 158.
  • the solar radiation receiver device 110 comprises one or more sensor devices 180, by means of which, for example, imbalances during the rotational movement of the container 158 about the rotation axis 162 can be detected.
  • the sensor devices 180 it can preferably be determined whether the heat transfer medium in the container 158 forms a uniform heat transfer medium film. In the case of a uniform heat transfer medium film, in particular a slight imbalance of the container 158 results. By means of the sensor devices 180, it is thus preferably possible to determine whether this small imbalance of the container 158 is amplified during operation, so that an uneven distribution of heat transfer medium in the container 158 can be closed. By appropriate countermeasures, in particular by suitable activation of the actuators 178, this imbalance can then be preferably counteracted to again provide the desired uniform heat transfer medium film.
  • the solar radiation receiver device 110 may be provided that the heat transfer medium distribution is detected in the container 158 by means of a camera. This also makes it possible to determine a deviation of the actual heat transfer medium distribution from a desired heat transfer medium distribution, in particular from a uniform heat transfer medium film, in order to then be able to initiate suitable measures for producing the desired heat transfer medium film.
  • Such a camera may be provided on demand in all of the described solar radiation receiver devices 110. - -
  • a second embodiment of a solar radiation receiver device 110 shown in FIG. 3 essentially differs from the first embodiment shown in FIG. 2 in that, in addition to a heat transfer medium 182 for forming a heat transfer medium film 184, a base material 186 is provided by means of which a base layer 188 on the inner surface 190 (inside) of the wall 172 of the container 158 can be generated.
  • the base layer 188 directly adjoins the inner surface 190 of the wall 172 of the container 158.
  • the heat carrier medium film 184 is arranged and / or formed on the side of the base layer 188 facing away from the wall 172 of the container 158 and facing the axis of rotation 162.
  • a uniform surface for supporting the heat transfer medium 182 can be created.
  • inaccuracies and roughnesses as well as manufacturing-related deviations of the shape of the wall 172 of the container 158 can be compensated for by an optimum circular-cylindrical shape.
  • the base layer 188 forms in particular an intermediate layer 192 between the wall 172 and the heat transfer medium film 184.
  • the solar radiation receiver device 110 may comprise an overflow element 194. - -
  • the overflow element 194 is in particular of annular design and arranged at an end 174 of the container 158 facing away from the inlet opening 170.
  • the overflow element 194 protrudes from the wall 172, in particular starting from the wall 172 in the direction of the interior 166, in particular in the direction of the axis of rotation 162.
  • the overflow element 194 forms a circular opening 196, which is arranged concentrically to the axis of rotation 162 and has a smaller inner diameter than the wall 172 of the container 158.
  • the heat transfer medium 182 and / or the base material 186 accumulates on the overflow element 194 and flows or finally trickles over the overflow element 194 or through the overflow element 194.
  • the overflow element 194 thus also forms a stowage element 200 in particular.
  • the heat transfer medium 182 on the overflow element 194 in particular on the storage element 200, preferably has to accumulate until it can be passed over the overflow element 194, an inner surface 202 of the heat transfer medium film 184 preferably results exclusively by the choice of the shape of the Overflow element 194.
  • the inner surface 202 of the heat transfer medium film 184 may be particularly precisely formed rotationally symmetrical about the axis of rotation 162 , - -
  • shape inaccuracies in the wall 172 of the container 158 then preferably have no or only a slight influence on the rotational symmetry of the inner surface 202 of the heat transfer medium film 184.
  • Adjoining the overflow element 194 in the conveying direction 198 is a discharge device 206 of the solar radiation receiver device 110, by means of which the heat transfer medium 182, which has been heated in the container 158, can be discharged.
  • the solar radiation receiver device 110 also comprises a supply device 208 for supplying heat transfer medium 182 to the interior 166 of the container 158, in particular at that end 168 of the container 158 at which the inlet opening 170 is arranged.
  • the feed device 208 comprises in particular at least one feed element 210, by means of which the heat transfer medium 182 can be guided into the interior 166 of the container 158 in a targeted manner at a predetermined speed and / or direction of movement.
  • the design of the heat transfer medium film 184 can be influenced by suitable supply of the heat transfer medium 182.
  • the second embodiment of the solar radiation receiver device 110 shown in FIG. 3 is identical in construction and function to the one shown in FIG. 2, so that reference is made to the above description thereof.
  • a third embodiment of a solar radiation receiver device 110 shown in FIGS. 4 and 5 essentially differs from the second embodiment shown in FIG. 3 in that the solar system of FIG. - -
  • Radiation receiver device 110 comprises a conveying device 212, by means of which the heat transfer medium 182 in the conveying direction 198 parallel to the axis of rotation 162 through the interior 166 of the container 158 can be passed.
  • the conveying device 212 comprises in particular a movement device 214, by means of which the container 158 is movable in a first direction of movement 216 and in a second direction of movement 218 opposite to the first direction of movement 216.
  • the two directions of movement 216, 218 are in particular aligned substantially parallel to the axis of rotation 162.
  • the container 158 is preferably movable slowly and / or with low acceleration in the first direction of movement 216 by means of the movement device 214.
  • This slow movement causes the heat transfer medium 182 moves together with the container 158 in the first direction of movement 216 and thus is conveyed upward against the direction of gravity g.
  • an increase in the rotational frequency of the container 158 may additionally be provided during movement of the container 158 in the first direction of movement 216.
  • the container 158 is movable by means of the moving device 214 rapidly and / or with great acceleration in the second direction of movement 218.
  • the slippage of the heat transfer medium 182 relative to the container 158 in the movement of the container 158 in the second direction of movement 218 can be assisted in that during this movement, the rotational frequency of the container 158 is reduced, so that a lower friction of the heat transfer medium 182 on the wall 172 of the container 158 (or optionally on the base layer 188).
  • the container 158 can be moved alternately slowly in the first direction of movement 216 and rapidly in the second direction of movement 218, the heat transfer medium 182 can be conveyed along the conveying direction 198, in particular effectively against the direction of gravity g.
  • FIG. 4 and 5 illustrated third embodiment of the solar radiation receiver device 110 in structure and function with the in FIG. 3 illustrated second embodiment, so that reference is made to the above description thereof in this regard.
  • FIG. 6 illustrated fourth embodiment of a solar radiation receiver device 110 differs from the first embodiment shown in FIG. 2 essentially by the fact that the actuators 178 are formed, for example, as actuators.
  • the actuators 178 are, in particular, bearing rollers 220 of the bearing points 176, which are movable relative to the rotation axis 162, in particular perpendicular to the rotation axis 162, in order to selectively influence the rotational movement of the container 158 about the rotation axis 162.
  • the fourth embodiment of a solar radiation receiver device 110 shown in FIG. 6 is the same in structure and function as that shown in FIG. 2, so that reference is made to the above description thereof. - -
  • one or more features of the above-described solar radiation receiver devices 110 may be arbitrarily combined with each other.
  • the in Fig. 3 illustrated second embodiment of the solar radiation receiver device 110 with actuators 178 according to the embodiments 1 and / or 4 (see FIGS. 2 and 6) is provided.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Dispositif capteur de rayonnement solaire, pouvant être fabriqué de manière simple et économique et pouvant fonctionner efficacement. Ce dispositif comprend un contenant qui comporte une paroi et un espace intérieur entouré de la paroi. Ce dispositif comprend également un dispositif d'alimentation pour l'apport d'un agent caloporteur à l'intérieur dudit contenant. Le contenant peut être mis en rotation autour d'un axe de rotation au moyen d'un dispositif d'entraînement en rotation du dispositif capteur de rayonnement solaire de sorte que l'agent caloporteur peut être guidé le long d'une face intérieure de la paroi du contenant pour former un film d'agent caloporteur. Le dispositif capteur de rayonnement solaire comporte au moins un élément de trop-plein pour former une surface intérieure à symétrie de rotation du film d'agent caloporteur.
PCT/EP2015/059748 2014-05-06 2015-05-04 Dispositif capteur de rayonnement solaire WO2015169765A2 (fr)

Priority Applications (1)

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EP15722142.5A EP3140598A2 (fr) 2014-05-06 2015-05-04 Dispositif capteur de rayonnement solaire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014106320.1A DE102014106320B4 (de) 2014-05-06 2014-05-06 Solarstrahlungsempfängervorrichtung
DE102014106320.1 2014-05-06

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WO2015169765A2 true WO2015169765A2 (fr) 2015-11-12
WO2015169765A3 WO2015169765A3 (fr) 2015-12-30

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Publication number Priority date Publication date Assignee Title
US11193695B2 (en) 2016-12-26 2021-12-07 Institute Of Modern Physics, Chinese Academy Of Sciences Solar heat absorber, solar heat collecting system and solar power generation system with ceramic particles
DE102017219374B4 (de) * 2017-10-27 2019-05-29 Deutsches Zentrum für Luft- und Raumfahrt e.V. Solarreceiver sowie Verfahren zum Betrieb eines Solarreceivers
WO2021233526A1 (fr) 2020-05-18 2021-11-25 Helioheat Gmbh Dispositif échangeur de chaleur, procédé d'actionnement d'un dispositif échangeur de chaleur et procédé de production d'un dispositif échangeur de chaleur
EP4256249A1 (fr) 2020-12-07 2023-10-11 Deutsches Zentrum für Luft- und Raumfahrt e.V. Appareil récepteur de rayonnement solaire pour chauffer un agent caloporteur dans une centrale héliothermique
DE102021117606A1 (de) 2021-07-07 2023-01-12 Deutsches Zentrum für Luft- und Raumfahrt e.V. Empfängervorrichtung für solarstrahlung mit einem behälter zum aufheizen eines wärmeträgermediums in einem solarthermischen kraftwerk
DE102022111801A1 (de) 2022-05-11 2023-11-16 Deutsches Zentrum für Luft- und Raumfahrt e.V. Empfängervorrichtung für Solarstrahlung mit einem Behälter zum Aufheizen eines Wärmeträgermediums in einem solarthermischen Kraftwerk

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US2793018A (en) * 1952-07-24 1957-05-21 Centre Nat Rech Scient Furnace for the treatment of substances by means of the energy supplied by a concentrated radiation
US2997006A (en) * 1953-10-23 1961-08-22 Aristid V Grosse Centrifugal reactor
FR1114995A (fr) * 1954-11-19 1956-04-18 Centre Nat Rech Scient Four pour traitements thermiques à l'aide de chauffage par rayonnement
EP0509286A1 (fr) * 1991-04-16 1992-10-21 Schweizerische Eidgenossenschaft PAUL SCHERRER INSTITUT Réacteur
DE102008036210B4 (de) * 2008-08-02 2010-08-12 Deutsches Zentrum für Luft- und Raumfahrt e.V. Strahlungsreceiver
DE102010062367A1 (de) 2010-12-02 2012-02-16 Deutsches Zentrum für Luft- und Raumfahrt e.V. Solarstrahlungsempfängervorrichtung und Verfahren zur solaren Erhitzung von Wärmeträgermedium

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WO2015169765A3 (fr) 2015-12-30
DE102014106320A1 (de) 2015-11-12
EP3140598A2 (fr) 2017-03-15
DE102014106320B4 (de) 2020-10-29

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