EP2646758A2 - Solarstrahlungsempfängervorrichtung und verfahren zur solaren erhitzung von wärmeträgermedium - Google Patents
Solarstrahlungsempfängervorrichtung und verfahren zur solaren erhitzung von wärmeträgermediumInfo
- Publication number
- EP2646758A2 EP2646758A2 EP11790961.4A EP11790961A EP2646758A2 EP 2646758 A2 EP2646758 A2 EP 2646758A2 EP 11790961 A EP11790961 A EP 11790961A EP 2646758 A2 EP2646758 A2 EP 2646758A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- heat transfer
- transfer medium
- solar radiation
- radiation receiver
- 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.)
- Withdrawn
Links
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
-
- 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.
- the invention relates to a method for solar heating of heat transfer medium, are guided in the heat transfer medium through a solar radiation irradiated container, wherein a heat transfer medium film is formed on a wall of the container.
- a solar radiation receiver device can be heated by solar radiation heat transfer medium such as (solid) particles and in particular ceramic particles to high temperatures, for example up to 1000 ° C.
- solar radiation heat transfer medium such as (solid) particles and in particular ceramic particles to high temperatures, for example up to 1000 ° C.
- a radiation receiver for transmitting the energy of incident solar radiation to solid particles which comprises an inclined plane having at the upper end of an inlet device for cold particles and at the bottom of a drain for hot particles.
- a solar-heated industrial furnace with a reaction space which has a window for the entry of focused solar radiation, which is directed by a Strayo concentrator through the window in the reaction space, wherein a non-solar heat source is provided, the so is designed so that they can take their energy input in the absence or insufficient performance of the solar radiation.
- the invention has for its object to provide a solar radiation receiver device, which has an optimized receiver efficiency.
- a container having a wall, an inner space surrounded by the wall and a rotary drive means, through which the container is rotatable about a rotation axis, is provided, wherein the container has an axis which is parallel or in an acute Angle is oriented to the direction of gravity, wherein through the container heat transfer medium to form a heat transfer medium film on an inner side of the wall is feasible.
- centrifugal forces caused by rotation of the container can form a heat transfer medium film and preferably coherent heat transfer medium film on the wall.
- the container is acted upon by solar radiation and there is the heating of the heat transfer medium.
- the speed is chosen so high that results in an optically dense or nearly dense heat transfer medium film over the entire circumference of the wall.
- Temperature gradients in the heat transfer medium film can be compensated and a more homogeneous temperature distribution can thus be achieved.
- control of the rotation and / or the angle to the direction of gravity can also be a controlled adjustment of the solar radiation receiver device, for example, in partial load operation or full load operation.
- 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 relative to the direction of gravity and the rotational speed of the container are preferably adapted to each other.
- the adaptation can also include properties of the heat transfer medium and the wall and in particular the friction properties. 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 the heat transfer medium type and the wall are then specified, then by appropriate selection or adjustment and, if appropriate, also variable input Position of the rotational speed (or speed) of the heat transfer medium film are generated.
- the (geometrical) axis of the container basically has no preferred direction and the term "acute angle” refers to the fact that there is no such preferential direction.
- the acute angle is the smallest angle of the angle between the axis of the container and the direction of gravity. (If the vessel is assigned a directional axis, for example, oriented between an entrance for particles and exit for particles, then "parallel” also includes antiparallel and "at an acute angle” also includes an obtuse angle.)
- the heat transfer medium is formed by particles and / or a fluid (in particular a liquid).
- the particles are in particular solid particles and 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 rotational speed of the container is greater than 80% of the root from the ratio of gravitation 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 used.
- 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.
- examples for example, provided for a correspondingly fast rotation of the container, so that the centrifugal force pushes the heat transfer medium against the wall. This gives increased wall adhesion or increased wall friction to increase the length of stay.
- the duration of stay can for example also be defined or controlled by vibrations and / or by providing special running paths. It is then possible to achieve a greater temperature spread between the inlet and outlet of the heat transfer medium to the container and thereby the receiver efficiency can be increased.
- the device for influencing the movement characteristic is designed as a device for controlling and in particular variably controlling the residence time of the particles in the interior space.
- the efficiency can be increased, wherein 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 and in particular to carry out solar irradiation conditions in order to enable, for example, also different partial load operations.
- a vibration device through which the container or one or more portions of the container are vibratable.
- This allows, for example, a tangential velocity component for Generate heat transfer medium.
- a combination of rotation with a suitable rotational speed can set a defined residence time or it can be the residence time control.
- a residence time can also be adjusted relatively accurately locally.
- the vibration device can 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 they are used especially when used as a heat transfer medium particles, provides for a "fluidization". 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. This makes it possible, for example, to adapt the heat transfer medium throughput time through the container to different solar irradiation conditions.
- the wall facing the interior, has one or more defined running paths or one or more guide elements for heat transfer medium.
- the heat transfer medium is on a specific Path is guided within the container and / or the film formation is improved.
- the travel path for passing through the container can be increased and thereby the length of stay of the heat transfer medium in the container can be increased. Furthermore, this can be the heat transfer medium imprint a tangential velocity component.
- 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 contacts the web elements.
- the railway elements provide 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 possible, for example, to impart a tangential velocity component to the heat transfer medium. Furthermore, the travel within the container can be increased.
- the one or more running paths or the guide elements or a tangential alignment to the wall can be given a tangential velocity component.
- 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 carrier medium comprises particles and wherein the particles are electrically and / or magnetically charged.
- Lorentz forces can thereby be formed (if the particles are electrically charged and a magnetic field acts on them) or electrostatic forces (if the particles are electrically charged and electric particles). acting on them), through which, with suitable training, the particles will move outward 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 residence time for 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 wall is on all sides with respect to the envelope of an inclined plane on which the heat transfer medium can slide along or flow.
- the interior tapers in the direction of gravity, so that the container is funnel-shaped.
- the Solarstrahlungsbeaufschlagung 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. In one embodiment, the coupling region is located above the coupling-out region with respect to the direction of gravity.
- heat transfer medium is carried out against the direction of gravity through the container. It 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 to the container at the bottom in relation to the direction of gravity and is coupled out in relation to the direction of gravity. This can be achieved in particular by a combination of vibration and rotation with the appropriate rotational speed and, if appropriate, corresponding wall formation (in particular via an inclined wall). It is favorable if a supply device for heat transfer medium to the container is provided, with which heat transfer medium can be supplied to the container at an adapted peripheral speed.
- the film formation can be 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. For the same reason, it is favorable if a discharge device for heat transfer medium is provided by the container, with 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.
- the invention is further based on the object to provide a method of the type mentioned, which results in an optimized receiver efficiency.
- This object is achieved in the method mentioned in the present invention in that the container is rotated about an axis of rotation which is parallel or at an acute angle to the direction of gravity and / or the container is vibrated.
- the method according to the invention has the advantages already explained in connection with the solar radiation receiver device according to the invention.
- the acute angle is less than or equal to 80 °.
- the heat transfer medium is irradiated directly in the container.
- Solar radiation is coupled in particular at an underside of the container in the container.
- the container has an axis which is aligned parallel to the direction of gravity or at an angle of less than 80 ° to the direction of gravity. As a result, an optimized efficiency can be achieved.
- the container is vibrated with respect to an axis of the container and / or the spatial position of the axis is changed.
- the movement characteristics of the heat transfer medium in the container can be selectively influenced, in particular to increase the receiver efficiency and / or to be able to adapt to changing conditions and in particular solar irradiation conditions.
- the heat transfer medium comprises particles and the particles are electrically and / or magnetically charged and an electric field loading and / or magnetic field loading of the particles takes place.
- appropriate forces can be exerted on the particles, which press them against the wall of the container, for example, in order to increase the length of stay.
- the application of force is such that the particles are forced in the direction of the wall.
- magnetic particles are selected so that the Curie temperature is at or below a desired temperature that is reached in the container. When the Curie temperature is reached, so to speak, the magnetic charge of the particles disappears and the corresponding force is then no longer effective.
- a coupling of the particles can be achieved in a simple manner.
- the Curie temperature corresponds to the target temperature for the decoupling.
- the residence time of the heat transfer medium in the container is adapted to variable load requirements. This gives a variable adjustment of full load operation and partial load operation and adaptation to changing solar irradiation conditions is possible.
- heat transfer medium is conveyed as a partial flow or total mass flow counter to the direction of gravity.
- This can be achieved in particular by a combination of vibration and rotation with a suitable rotational speed.
- the rotational speed is increased to increase a conveyance against the direction of gravity.
- inclined walls, as they are present, for example, in a funnel-shaped design of the container, are also advantageous. This can be increased in particular by forming an advantageous temperature profile of the receiver efficiency.
- the inlet and the outlet are interchanged with respect to the conventional transport direction.
- Figure 1 is a schematic representation of an embodiment
- Figure 3 is a schematic representation of a second embodiment of a solar radiation receiver device.
- Figure 4 is a schematic representation of a third embodiment of a solar radiation receiver device.
- An exemplary embodiment of a solar thermal power plant which is shown schematically in FIG. 1 and designated therein by 10, comprises a heliostat field 12 having a plurality of heliostats 14.
- a heliostat 14 has a mirror surface 16 which can be aligned about at least one axis.
- Solar radiation 18 can be focused on the mirror surfaces 16 of the heliostat 12 to a solar radiation receiver device 20 in particular bundled.
- Solar radiation directed at the solar radiation receiver device 20 is indicated by reference numeral 22 in FIG.
- the solar thermal power plant 10 comprises (at least) a tower receiver 23, in which the solar radiation receiver device 20 is arranged on a tower 21 at a distance from a floor 24 (with respect to the direction of gravity g), that is to say it is elevated.
- the heliostats 14 are also disposed on the floor 14.
- the solar radiation receiver device 20 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 having typical diameters between 0.3 mm to 1 mm are used.
- the solar thermal power plant 10 for this purpose comprises a first circuit 26, which is a particle cycle.
- the first circuit 26 has a high-temperature branch 30 and a low-temperature branch 32.
- the low-temperature branch 32 leads from an output 34 of the heat exchanger 28 to an input 36 of the (particle) solar radiation receiver device 20.
- the high-temperature branch 30 leads from an output 38 of the solar radiation receiver device 20 to an input 40 of the heat transmitter 28.
- Particles can be thereby via the low-temperature branch 32 of the solar radiation receiver device 20 and are heated there by solar radiation. Heated particles can be supplied via the high-temperature branch 30 to the heat exchanger 28 and can deliver heat there to a second circuit 42.
- a heat storage 44 (low-temperature heat storage) is arranged.
- a heat store 46 (high-temperature heat store) to be arranged in the high-temperature branch 30.
- the second circuit 42 is a turbine circuit.
- a turbine 48 and in particular steam turbine is arranged, which is coupled to an electric generator 50 for generating thermal power.
- the second circuit 42 comprises a high-temperature branch 52, which leads from an output 55 of the heat exchanger 28 to the turbine 48. Furthermore, the second circuit 42 comprises a low-temperature branch 54, wel rather, leads from the turbine 48 or turbine-downstream condenser 56 to an inlet 58 of the heat exchanger 28.
- a pump 60 is arranged in the low-temperature branch 54, which conveys a fluid through the second circuit 42.
- the steam is released and the condenser 46 is condensed to water.
- This condensate is returned to the heat exchanger 28 in the low-temperature branch 54 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 it is also possible, for example, for a solar radiation receiver device to be used to generate process heat or to effect chemical conversions or to produce fuels. Other applications are conceivable.
- a first exemplary embodiment of a (particle) solar radiation receiver device according to the invention which is shown in FIG. 2 and designated there by 62, comprises a container 64 with a wall 66.
- the wall 66 surrounds an interior 68 of the container 64.
- the container 64 has an axis 70, wherein in particular an inner side 72 of the container 64 is formed at least with respect to an envelope rotationally symmetrical to the axis 70.
- the axis 70 is oriented parallel to the direction of gravity g or lies at an acute angle to the direction of gravity g, this acute angle is at most 80 °. It is usually specified by the orientation of heli-state 14.
- the inside 72 of the container 64 is formed by a corresponding inner side of the wall 66.
- the container 64 is funnel-shaped; of the
- Interior 68 tapers from a top 74 to a bottom 76.
- the container 64 has an opening 78, which is in particular circular.
- Solar radiation 22 is coupled via the opening 78 in the container 64; the heliostats 14 of the heliostat 12 direct the solar radiation 22 to the opening 78.
- the container 64 has at the top 74 an opening 80, which is also preferably circular.
- the opening 80 has a larger diameter than the opening 78.
- Particles 82 are guided via an insertion region 84 into the interior 68 of the container 64.
- this coupling-in region 84 comprises or is formed by the opening 80 and is formed by the inlet 36 or is in communication therewith in fluid-effective communication with the particles.
- "cold" particles 82 are introduced into the interior 68 of the container 64.
- a coupling-out region 86 which comprises the opening 78 and is formed by this, and which is formed by the outlet 38 or with this compound which is fluidically active for the particles
- the particle solar radiation receiver device 62 is embodied and operated in such a way that an as coherent particle film as a heat transfer medium film can form on the inside 72 of the wall 66.
- the particles 82 slip on the inner side 62 from the coupling region 84 to the coupling-out region 86 and are in particular directly irradiated and heated by the solar radiation 22.
- a device 88 for influencing the movement characteristic is provided which ensures, in particular, that the falling film is not thinned too much and that a high residence time in the interior 68, that is to say a high residence time for the application of the solar radiation, is achieved.
- the device 88 can be used to control the heat absorption of the particles into the container 64 in order, for example, to adapt to varying load conditions (for example due to different solar irradiation).
- the device 88 includes a rotary drive device 90 through which the container 64 is rotatable about a pivot axis 92.
- the axis of rotation 92 is aligned parallel to the direction of gravity g or lies at most at an acute angle of 80 ° or less to the direction of gravity g. In particular, the axis of rotation 92 coincides with the axis 70.
- the device 88 may include a vibrator 94 through which the container 64 is vibratable (indicated by reference numeral 96 in FIG. 2).
- the vibration can be such that, for example, the container 64 rotates along its axis 70. It is alternatively or additionally possible that, for example, the spatial position of the axis 70 is changed in an oscillating manner by the vibration.
- the container 64 may perform a kind of wobbling motion.
- the device 88 comprises a field generating device 98 for generating an electric field and / or magnetic field, with which the interior space 68 can be acted upon. In this case, the particles 82 are electrically and / or magnetically charged.
- the particles 82 are electrically charged and the field generating device 98 generates a magnetic field, then the particles 82 experience a Lorentz force in the magnetic field, with the particles being moved outward in the direction of the inside 72 of the wall 66 if the magnetic field is oriented accordingly can.
- electrostatic forces can also cause it to move outward.
- an outward movement toward the wall 66 can also be effected by an electric and / or magnetic field. It is also possible to select the particles so that the Curie temperature is at or below a target temperature (outlet temperature) of the particle solar radiation receiver device 62. When the corresponding Curie temperature is reached, the particles 82 lose their magnetic charge and the force generated by the field generator 98 decreases. As a result, corresponding particles 82 can be removed in a simple manner. As a result, the effect of the field-generating device 98 on the particles 82 is effectively switched off.
- the method according to the invention works as follows:
- the axis 70 is parallel to the direction of gravity g or at most inclined at a small acute angle (in particular less than 80 °) to the direction of gravity g.
- the container 64 is funnel-shaped.
- Measures can be taken via the device 88 in order to "hold” the particles 82 on the wall 66 and, if appropriate, also to control them variably. With appropriate implementation of the method, it is even possible in principle to convey particles 82 (as a partial flow or total mass flow) counter to the direction of gravity g (indicated by the reference numeral 100 in FIG. 2).
- the container 64 is rotated.
- the rotation is so fast that the particle film due to centrifugal forces and particle-wall friction on the inside 72 of the wall 66 can form.
- the container 64 is rotated so fast that results in an optically dense particle film over the entire circumference of the wall.
- the speed is selected so that it is greater than 70% of the speed at which all particles 82 adhere to the wall 66.
- the speed (in units of rad / s) is greater than 80% of the ratio of the root of the gravitational constant g to that
- Inner radius R of the wall 66 n> 0.8 (gl R) 2 .
- a delivery against the direction of gravity g can be achieved, at least for a partial flow, in particular if the wall 66 is designed accordingly (see below).
- vibration and / or rotation can be varied over time in order in particular to obtain a tangential velocity component. witness. Also, this can be achieved against the direction of gravity g in particular with a suitable inclination of the axis 70 to the direction of gravity g.
- appropriate variable control of the rotation and / or vibration can also be adapted to changing load conditions, in particular due to different solar irradiation conditions.
- the field-generating device 98 can influence the movement characteristic and, in particular, increase the residence time in the container 64.
- the "falling speed" (axial passage speed) of the particles 82, which form the particle film can be reduced and, in particular, reduced in a controlled manner.
- a tangential component can be applied to the particle velocity.
- Particles 82 can be controlled to the inside 72 lead. There is a deceleration by friction to increase the length of stay.
- the supply and the discharge of the particles takes place at a speed which corresponds at least approximately to the peripheral speed of the container 64. If the feeding is done accordingly, then it is prevented that the film formation is made difficult due to the feeding process. If the circumferential velocity is included in the removal of the particles, then an excessive deviation of the particles from their movement characteristics within the container is avoided. In turn, a disturbance of the film formation due to removal is minimized. Furthermore, then abrasion losses are minimized in the discharge and delivery.
- a further embodiment of a particle solar radiation receiver device which is shown in Figure 3 in a partial view and there with 102 includes a container 104.
- the container 104 in turn has a wall 106 which defines an inner space 108 and thereby surrounds the interior.
- An envelope of an inner side 110 of the wall 106 tapers from a coupling-in region 112 to a coupling-out region 114.
- the coupling-in region 112 lies above the coupling-out region 114 with respect to the direction of gravity g.
- Solar radiation 22 is coupled into the inner space 108 via the coupling-out region 114.
- the container 104 has an axis 116, wherein in particular the inside of the wall 110 with respect to its envelope is rotationally symmetrical to the axis 116.
- the axis 116 is slightly inclined (at an angle less than or equal to 80 °) with respect to the direction of gravity g.
- a device 118 for influencing the movement characteristic of particles 82 is formed, which are introduced via the coupling-in region 112 into the inner space 108.
- This device 118 comprises (at least) a running path 120 or guide element on the inner side 110 of the wall 106.
- a track 120 has guide elements 122 supported by soft particles 82, a track element 122 being oriented parallel to a plane 124 which is perpendicular to the axis 116 or at a small acute angle, in particular less than or equal to 30 ° to this axis 116 is located.
- running paths 120 and guide elements which are formed by a profiling of the wall 106 on the inner side 110, the residence time of particles 82 in the inner space 108 can be increased, since the axial passage speed is reduced or the residence time is increased. This can be achieved in combination with a rotation and / or vibration and / or field generation, as described in connection with the particle solar radiation receiver device 62.
- the residence time of the particles 82 in the inner space 108 can be increased.
- the travel paths 120 or guide elements are formed by steps 126 on the inside of the wall 106.
- a plurality of spaced-apart steps 126 are provided, wherein the steps 126 are aligned in particular parallel to one another.
- the running paths 120 or guide elements can for example also be formed by grooves, ribs, dents, wall roughness, etc.
- the steps 126 of the container 104 are spaced from one another. It is also possible for one or more running paths 120 or guide elements to be present, which pass through at least a portion of the container 104 and thereby have an axial extension with a component parallel to the axis 116.
- the solar radiation receiver device 110 is operated as described above.
- a temperature gradient can arise in the film of the particles 82 in the inner space 108.
- a tangential velocity component leads to a temperature compensation in the circumferential direction, since in particular different zones in the circumferential direction are passed through several times. As a result, the temperature distribution for the particle temperature is more homogeneous when the particles are coupled out.
- a container 130 having an axis 132 is provided.
- the axis 132 which is a longitudinal axis, is inclined at an angle to the direction of gravity g. The angle is, for example, at 45 °.
- the container 130 is rotatable about an axis of rotation which, for example, coincides with the axis 132. Furthermore, it is optionally vibratable.
- the container 130 has a feed end 134 for (cold) heat transfer medium and a discharge end 136 for (hot) heat transfer medium.
- Solar radiation 18 is coupled into the container 130 in the region of the discharge end 136. It can be provided that a partial flow or a total mass flow of heat transfer medium in the container 130 is conveyed against the direction of gravity.
- the container 130 is associated with a feed device 138 for heat transfer medium.
- the latter is seated at the feed end 134.
- the feed device 138 is funnel-shaped with a first end 140 and a second end 142. Via the first end 140, the feed device 138 sits at the feed end 134.
- the device 138 at the second end 142 is smaller than at the first end 140.
- the supply device 138 is in particular at least partially designed as a heat exchanger; It is exposed to solar radiation and / or thermal radiation from other components.
- the corresponding heat can be used.
- correspondingly applied walls are at least partially made of a material of high thermal conductivity (in particular metallic thermal conductivity). Via the walls a thermal contact with a heat transfer medium is realized.
- the walls may additionally be provided with a surface enlarging structure such as ribs, fins, etc. The surface-enlarging structure can simultaneously have a guiding function for particles. This results in a compact design optimized efficiency.
- the supply device 138 is designed such that heat transfer medium and in particular particles can be supplied to the container 130 at a peripheral speed, which is optimized for the film formation in the container 130.
- a solar radiation receiver device can be used in a solar thermal power plant or, for example, also for the provision of process heat. In particular, it can be used when high process temperatures are present and in particular a small to medium power is delivered.
- An application such as a solar thermal power plant advantageously has one or more reservoirs, each having at least one container which is thermally insulated and in which hot particles are collected. LIST OF REFERENCE NUMBERS
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Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010062367A DE102010062367A1 (de) | 2010-12-02 | 2010-12-02 | Solarstrahlungsempfängervorrichtung und Verfahren zur solaren Erhitzung von Wärmeträgermedium |
PCT/EP2011/071375 WO2012072677A2 (de) | 2010-12-02 | 2011-11-30 | Solarstrahlungsempfängervorrichtung und verfahren zur solaren erhitzung von wärmeträgermedium |
Publications (1)
Publication Number | Publication Date |
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EP2646758A2 true EP2646758A2 (de) | 2013-10-09 |
Family
ID=45093750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11790961.4A Withdrawn EP2646758A2 (de) | 2010-12-02 | 2011-11-30 | Solarstrahlungsempfängervorrichtung und verfahren zur solaren erhitzung von wärmeträgermedium |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2646758A2 (de) |
BR (1) | BR112013013532A2 (de) |
DE (1) | DE102010062367A1 (de) |
WO (1) | WO2012072677A2 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011108713B4 (de) * | 2011-07-28 | 2015-11-19 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Solarthermisches Kraftwerk sowie Verfahren zum Betrieb eines solarthermischen Kraftwerks |
DE102014200418B4 (de) | 2014-01-13 | 2017-05-18 | Ceram Tec-Etec Gmbh | Solarstrahlungsreceiver für Solarturmkraftwerke sowie Solarturmkraftwerk |
DE102014106320B4 (de) * | 2014-05-06 | 2020-10-29 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Solarstrahlungsempfängervorrichtung |
DE102015204461B4 (de) | 2015-03-12 | 2017-05-24 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Solarkraftwerk |
DE102016216733B4 (de) | 2016-06-23 | 2018-03-22 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Solarstrahlungsreceiver zur solaren Bestrahlung von Feststoffpartikeln, eine Industrieanlage mit einem Solarstrahlungsreceiver, sowie ein Verfahren zur solaren Bestrahlung von Feststoffpartikeln |
WO2021233526A1 (de) | 2020-05-18 | 2021-11-25 | Helioheat Gmbh | Wärmeübertragervorrichtung, verfahren zum betreiben einer wärmeübertragervorrichtung und verfahren zum herstellen einer wärmeübertragervorrichtung |
EP4256248A1 (de) | 2020-12-07 | 2023-10-11 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Solarstrahlungsempfängervorrichtung 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 |
DE102022128410A1 (de) | 2022-10-26 | 2024-05-02 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Messvorrichtung zur Bestimmung einer Verteilung eines Wärmeträgermediums und Verfahren zur Bestimmung einer Verteilung eines Wärmeträgermediums |
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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 |
EP0509286A1 (de) * | 1991-04-16 | 1992-10-21 | Schweizerische Eidgenossenschaft PAUL SCHERRER INSTITUT | Reaktor |
IL131371A0 (en) * | 1999-08-12 | 2001-01-28 | Yeda Res & Dev | Reaction chamber with a protected surface |
IL150519A (en) * | 2002-07-02 | 2006-08-20 | Yeda Res & Dev | Solar receiver with a plurality of working fluid inlets |
DE10343861A1 (de) * | 2003-09-23 | 2005-04-14 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Solarbeheizter Industrieofen |
DE102008036210B4 (de) | 2008-08-02 | 2010-08-12 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Strahlungsreceiver |
WO2010083285A1 (en) * | 2009-01-15 | 2010-07-22 | Sunlight Power, Inc. | Ground-based, integrated volumetric receiver-storage system for concentrated solar power |
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2010
- 2010-12-02 DE DE102010062367A patent/DE102010062367A1/de active Pending
-
2011
- 2011-11-30 WO PCT/EP2011/071375 patent/WO2012072677A2/de unknown
- 2011-11-30 BR BR112013013532A patent/BR112013013532A2/pt not_active Application Discontinuation
- 2011-11-30 EP EP11790961.4A patent/EP2646758A2/de not_active Withdrawn
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2012072677A2 * |
Also Published As
Publication number | Publication date |
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DE102010062367A1 (de) | 2012-02-16 |
WO2012072677A3 (de) | 2012-11-15 |
WO2012072677A2 (de) | 2012-06-07 |
BR112013013532A2 (pt) | 2016-10-18 |
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