US20130118479A1 - Module for a thermal absorber of a solar receiver, absorber comprising at least one such module and receiver comprising at least one such absorber - Google Patents
Module for a thermal absorber of a solar receiver, absorber comprising at least one such module and receiver comprising at least one such absorber Download PDFInfo
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- US20130118479A1 US20130118479A1 US13/700,366 US201113700366A US2013118479A1 US 20130118479 A1 US20130118479 A1 US 20130118479A1 US 201113700366 A US201113700366 A US 201113700366A US 2013118479 A1 US2013118479 A1 US 2013118479A1
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- Prior art keywords
- absorber
- module
- lengthways
- wall
- heat transfer
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Classifications
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- F24J2/202—
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
- F24S10/502—Solar heat collectors using working fluids the working fluids being conveyed between plates having conduits formed by paired plates and internal partition means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
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- F24J2/10—
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
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- 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
- F24S80/50—Elements for transmitting incoming solar rays and preventing outgoing heat radiation; Transparent coverings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S2023/87—Reflectors layout
- F24S2023/872—Assemblies of spaced reflective elements on common support, e.g. Fresnel reflectors
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- 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
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- 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
- F24S2080/05—Flow guiding means; Inserts inside conduits
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- 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
- F24S2080/09—Arrangements for reinforcement of solar collector elements
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- 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
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- 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
- Y02E10/44—Heat exchange systems
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49355—Solar energy device making
Definitions
- the present invention relates to a thermal absorber for a solar receiver of a solar power plant and to a solar receiver for a solar power plant comprising at least one such absorber, in particular for a Fresnel-type concentrating solar power plant.
- Concentrating thermal solar technology consists in using solar radiation to heat a heat transfer fluid used as the heat source in a thermodynamic cycle. Concentration enables relatively high temperatures to be attained, and thus relatively substantial thermodynamic conversion efficiencies to be enjoyed.
- the developed technologies are distinguished by the means used to concentrate the solar rays, by the means by which heat is transferred, and possibly by the means used to store heat, i.e. the heat transfer fluid used and thermodynamic conversion means which are, for example, steam turbines, gas turbines or Stirling engines.
- CSP Concentrating Solar Power
- Each concentrating solar power system comprises a solar receiver the function of which is to transfer to a fluid, such as water, oil or a gas, the heat of the solar radiation.
- This solar receiver therefore forms a heat exchanger.
- This exchanger is formed of one or more tubes installed parallel to one another, in which the heat transfer fluid flows.
- the solar receiver receives the light rays reflected by mirrors, and transmits them to the heat transfer fluid in the form of heat.
- a solar receiver typically comprises:
- a layer of thermal insulating material enabling the heat losses from the absorber to the exterior to be limited
- a glazed panel enabling the absorber to be insulated from the external environment, and delimiting a closed cavity between the absorber and the glass.
- the flux received by the absorber varies greatly across the width of the absorber and along the length of the absorber. This variety is notably due:
- the concentrated flux is obtained by the superimposition of unit fluxes of each mirror either side of the receiver, where each mirror produces a solar patch on the absorber with focusing and flux which vary according to the position of the sun in the course of the day;
- the surface of the absorber which receives the flux is generally covered with a selective surface coating which absorbs the solar energy whilst having a low emissivity in the infrared spectrum, limiting losses by infrared re-emission.
- This coating is, for example, a black paint.
- the lifetime of this surface treatment is an important parameter for the performance of the solar power plant. But this selective surface treatment can be heat damaged; it is therefore important to prevent the appearance of hot points.
- An absorber for a solar receiver of the Fresnel type is described, for example, in documents US 2009/0056703 A1 and US2009/0084374 A1.
- the absorber is formed by multiple tubes positioned next to one another in order to transfer the energy of the concentrated solar flux to the fluid.
- the tubes are particularly suitable for pressurised fluids such as steam.
- the concentrated solar flux varies greatly over the width of the absorber and, possibly, along the length of the tubes, the fluid is heated differently in different tubes. Since the fluids exiting the different tubes are not at the same temperature a reblending zone is then required.
- the zones located between the tubes which also receive the concentrated solar flux are not used to heat the fluid, and the efficiency of the receiver is therefore not optimal.
- the temperature of the wall of the tube increases suddenly and the selective surface treatment applied to the tube may be damaged rapidly, and there may therefore be a drop in performance of the solar receiver.
- a module for the production of an absorber for a solar receiver of a thermal power plant comprising a wall which is roughly flat, and the outer face of which is intended to receive the luminous flux, a wall opposite said wall, and side walls, where said walls define a single channel for the flow of a pressurised heat transfer fluid, and where the wall the face of which is intended to receive the luminous flux and the wall opposite the latter are connected mechanically by means installed in the flow of the fluid, so as to keep the absorber pressurised.
- the module according to the invention also comprises means for reblending the fluid in the single channel, homogenising the temperature of the fluid, and preventing the appearance of hot points.
- the elements mechanically connecting the two walls also form deflectors for the fluid, so as to reblend the fluid within the module.
- the two mechanically connected walls are preferentially connected by a single central element which is roughly aligned with the lengthways axis of the absorber, in which windows are made to cause the fluid to flow from one side to the other of the central element. Even more preferentially, vanes are installed to force the fluid to flow through the windows, and thus to change direction.
- the absorber according to the present invention comprises one or more modules according to the present invention placed end-to-end, and collectors upstream and downstream for connection to a liquid supply circuit or to other absorbers.
- the absorber according to the present invention is a heat exchanger having a single duct, used to collect a concentrated solar energy flux on a single one of its faces, which is particularly suitable for a flow of great variability across the width and along the length of the exposed face.
- This exchanger transfers this flux to a heat transfer fluid, undertaking an internal blending in order to homogenise the output temperature of the fluid and the wall temperature, which prevents thermal degradation of the fluid and of the surface coating on the face exposed to the flux.
- the subject-matter of the present invention is then a module for the production of a thermal absorber for a solar receiver of a solar power plant, with a lengthways axis, comprising a first roughly flat wall having a face intended to be subjected to a luminous flux, a second wall opposite the first wall and side walls connecting said first and second walls, where said module is delimited at its lengthways ends by transverse end planes at which points said module is intended to be connected to upstream and/or downstream modules, and/or to collectors for the supply and/or evacuation of a heat transfer fluid intended to flow under pressure in the module, and where said module comprises means rigidly connecting the first and second walls, where said means are positioned in the flow of the heat transfer fluid, and means to enable the heat transfer fluid to flow in directions which are inclined relative to the lengthways axis.
- the heat transfer fluid is a liquid.
- the pressure of the heat transfer fluid in the module is preferably between 2 Bar and 6 Bar.
- the means to enable flows in directions which are inclined relative to those of the lengthways axis comprise deflectors which are distributed throughout the volume of the module, and which cause the fluid to change direction.
- the module according to the invention comprises at least one rib extending in a lengthways direction, attached to the first and to the second walls, where said rib comprises windows and deflectors associated with the windows, and where said deflectors cause a portion of the fluid to flow through said windows.
- said at least one rib extends in a lengthways direction along the entire length of said module, delimiting two half-channels which are in fluid communication.
- the rib is produced for example from a metal alloy strip from which the deflectors are cut, where said deflectors are folded such that they are inclined relative to the lengthways axis and open up the windows.
- Two successive deflectors are preferably located either side of the plane of the rib.
- the rib can be welded on one side to the internal face of the first wall, where said rib comprises tabs on its side which is welded to the second wall which are inserted into notches made in said second wall.
- the module can be of a roughly rectangular parallelepipedic shape, where the first and second walls have the largest areas.
- the face intended to be subjected to a luminous flux advantageously comprises a coating improving the absorption of the luminous flux.
- the coating preferably has low infrared emissivity properties.
- Another subject-matter of the present invention is a thermal absorber for a solar receiver of a solar power plant comprising one or more modules according to the present invention, where the modules are connected in series in sealed fashion, and where said absorber comprises, at a first lengthways end, a heat transfer fluid supply collector and, at a second lengthways end, a heat transfer fluid evacuation collector.
- Another subject-matter of the present invention is a solar receiver comprising at least one absorber according to the present invention, and a skirt formed from two inclined panels at some distance from the lengthways axis, positioned either side of the absorber relative to the lengthways axis, where said skirt redirects the luminous flux on to the absorber.
- the receiver may comprise thermal insulation means positioned outside the absorber on the second wall and on the sides of the latter.
- the receiver is preferably of the Fresnel type.
- Another subject-matter of the present invention is a method for manufacturing an absorber according to the present invention, comprising the following steps:
- the mechanical connection means and the means to enable flows in directions which are inclined relative to that of the lengthways axis are produced, for example, from a metal alloy strip:
- vanes by cutting vanes from the strip, where said vanes are attached on one side to the strip, and
- the mechanical connection means are attached, for example, by welding.
- the manufacturing method according to the invention advantageously comprises a step of surface treatment of the outer face of the first wall.
- Said surface treatment can be accomplished by applying a layer of paint on to said face after the module or modules are manufactured.
- Another object of the present invention is a method for manufacturing a solar receiver, where said method comprises:
- FIG. 1 is a perspective cutaway view of an example embodiment of an absorber according to the present invention
- FIG. 2 is a transverse section view of the absorber of FIG. 1 ,
- FIG. 3A is a view of an isolated element of the absorber of FIG. 2 .
- FIG. 3B is an enlarged view of FIG. 3A .
- FIG. 3C is a top view of the detail of FIG. 3B .
- FIG. 4 is a diagrammatic representation of a variant embodiment of an absorber according to the present invention.
- FIG. 5 is a diagrammatic transverse section view of an example embodiment of a solar receiver according to the present invention.
- FIG. 6 is a partial diagrammatic representation of a Fresnel-type solar power plant according to the present invention.
- FIG. 5 Such a solar receiver is represented in FIG. 5 .
- Solar receiver 2 comprises a skirt 4 formed by two panels 4 . 1 , 4 . 2 which define, seen as a transverse section, a trapezoid space, in the base of which an absorber 6 is positioned.
- Skirt 4 advantageously redirects the luminous flux from mirrors (in FIG. 6 ) to absorber 6 , and more specifically to an outer face 6 . 1 of a lower wall of the absorber.
- the luminous flux is represented symbolically by arrows F.
- the solar receiver forms part of a thermal power plant and transfers the heat from the luminous flux to the liquid.
- Absorber 6 delimits a channel 8 in which a heat transfer fluid is intended to flow in a direction roughly perpendicular to the plane of the sheet of paper in the representation of FIG. 5 .
- Thermal insulation means 10 are advantageously installed on the other wall and on the sides of absorber 6 to limit the heat losses from the absorber to the exterior, and more specifically from the heat transfer fluid heated by the luminous flux towards the exterior.
- a transparent plate 11 may be installed, for example made of glass, positioned upstream from the absorber in the direction of the luminous flux, to create a sealed cavity and to limit losses by convection.
- Absorber 6 comprises a casing 12 of roughly parallelepipedic shape extending in a lengthways axis X.
- the casing comprises two lengthways walls 14 . 1 , 14 . 2 of greater area, where two side lengthways walls 16 . 1 , 16 . 2 connect both lengthways walls 14 . 1 , 14 . 2 of greater area.
- the casing is delimited at its lengthways ends by two transverse end planes 18 . 1 , 18 . 2 .
- the casing can comprise one or more modules; in the represented example it contains two such modules.
- the absorbers are generally very long, for example several hundred metres; they therefore usually comprise several modules. This type of production in the form of modules enables manufacture to be simplified.
- One of the lengthways walls of greater area 14 . 1 is intended to be illuminated by luminous flux F.
- This wall is located in the lower portion in order to receive the luminous flux reflected by the mirrors; this wall will be designated below by the description “lower wall”; the opposite wall, for its part, will be designated the “upper wall”.
- the absorber also comprises a collector 20 for the supply of “cold” heat transfer fluid connected to the casing at one of the transverse end planes, and a collector 22 for evacuating the heated heat transfer fluid, after it has traversed the entire absorber connected to the casing at the opposite transverse plane.
- Collectors 20 , 22 are connected to a fluid network of the solar power plant.
- the heat transfer fluid flows along lengthways axis X, from supply collector 20 to evacuation collector 22 , in the direction represented symbolically by arrow 24 .
- the heat transfer fluid is a liquid.
- the section of the casing is rectangular; however, this shape is in no way restrictive. Indeed, the section could, for example, be trapezoid, where both side walls would then be inclined and where the base would be formed by wall 14 . 1 . Walls 14 . 1 and 14 . 2 could be non-parallel, or at least have non-parallel portions. It could even be envisaged that the transverse section of the casing could be not a quadrilateral, but instead a triangle or a polygon having at least five sides.
- the casing of absorber 6 delimits channel 8 , one outer face 6 . 1 of which is subjected to luminous flux F.
- Mechanical connection means 28 between the lengthways walls 14 . 1 , 14 . 2 of greater areas are designed to ensure that they are able to withstand the pressure of the casing.
- these mechanical connection means 28 are formed by a rib 30 positioned roughly along lengthways axis X and attached to the side walls 14 . 1 14 . 2 of greater area.
- the rib is more specifically visible in FIGS. 3A to 3C .
- Rib 30 is perforated to allow fluid to pass from one side to the other of the rib, and to allow the fluid to be reblended.
- the absorber advantageously comprises means improving the blend by causing the fluid to change its direction of flow relative to the lengthways direction, such that the temperature of the fluid within the channel is roughly uniform, and such that the appearance of hot points is prevented.
- a hot point is understood to mean, in particular in the context of this invention, a zone subjected to a greater solar flux over an area extending lengthways along the absorber.
- the rib is pierced with windows 32 , and has fluid deflectors 34 such that they cause the fluid flow to change from one side to the other of rib 30 .
- the deflectors are formed by vanes cut from the rib simultaneously producing windows 32 .
- the deflectors' direction of inclination is such that it deflects the stream towards the opposite face of the rib.
- the change of direction of the stream is represented symbolically by arrows 36 in FIG. 3B .
- two succeeding vanes are each advantageously located on one side of rib 30 , such that the fluid is alternately directed to one side and then to the other side of the rib, thus causing the reblending.
- the effect of the presence of the rigidification rib is not therefore to divide channel 8 into two independent channels, but is to allow the fluid to flow between the two subchannels, and therefore allows homogenisation of the temperature. If one side of plate 14 . 1 opposite one of the subchannels is more illuminated than the other, therefore potentially implying a greater heating of the fluid flowing in this subchannel, the blending thus prevents the appearance of this temperature differential.
- the temperature of the walls is also homogenised, reducing the deformations of the casing by expansion.
- the absorber's casing is preferably made of metal plate, as is the rib, which is then welded on to both lengthways walls of greater area.
- rib 30 has protruding tabs 37 on its upper edge on the side of wall 14 . 2 of the casing; these tabs are inserted into notches made in upper wall 14 . 2 to anchor the rib satisfactorily.
- Rib 30 is then welded on to the internal face of lower wall 14 . 1 , which does not damage its outer face 6 . 1 subjected to the luminous flux, and tabs 37 traverse upper wall 14 . 2 and are welded to this wall in sealed fashion. It should be noted that the surface condition of outer face 6 . 1 of upper wall 14 . 2 is not a factor for the operation of the absorber.
- interval of windows 32 and angle of inclination ⁇ of vanes 34 are chosen in accordance with the flow conditions of the fluid in absorber 6 .
- n is a positive integer, extending along the entire length of the channel, and defining n+1 subchannels in communication. The pressure resistance of the absorber is thus increased further.
- the rib extends along the entire length of the lengthways axis.
- Multiple single deflectors 134 can also be distributed throughout the entire volume of duct 8 , as is represented diagrammatically in FIG. 4 .
- the deflectors are then, for example, formed by metal plates welded on to both lengthways walls of greater area, and inclined relative to lengthways axis X.
- a perforated rib such as the one represented in FIG. 3A , but having no vanes, could also be envisaged, the vanes then being attached separately in the volume of the channel, and aligned to cause the fluid to flow through the windows of the rib.
- face 6 . 1 of absorber 6 receiving the luminous flux is flat; a surface treatment can then easily be applied to it to ensure that it collects the luminous flux satisfactorily, the goal being to obtain total absorption of the incident luminous flux, i.e. emissivity in the visible spectrum close to 1, and zero re-emission in the infrared spectrum, i.e. emissivity in the infrared spectrum close to 0.
- the treatment is, for example, applied to the lower face of the casing after the latter has been assembled, by applying a layer of selective paint, or then before assembling the casing, by accomplishing a bath deposition, for example of the Black Chromium type on the metal plate intended to form lower wall 14 . 1 .
- the absorber according to the present invention is particularly suitable for operation at a pressure of less than 10 bar, and more specifically at an absolute pressure of between 2 Bar and 6 Bar, for example between 3 Bar and 6 Bar at maximum temperatures of 400° C., and even more particularly for operation at a pressure of the order of 3 Bar and at a temperature of the order of 300° C.
- the heat transfer fluid can be water or, more advantageously, thermal oil commonly used in concentrating solar power plants, such as Therminol 66® or Therminol VP1®.
- the heat transfer fluid can flow in the absorber at a speed of the order of 0.2 m/s to 2 m/s.
- the casing of the absorber is made, for example, with metal alloy plates of roughly 1 millimetre thick, welded in sealed fashion. Such alloys can be stainless steel 304 or stainless steel 316, or again a pressure-resistant steel such as P265GH and P295GH.
- the casings are preferably manufactured from multiple modules, which are positioned end-to-end, and which are assembled by a seal weld 40 ( FIG. 1 ).
- each module may measure 2.5 m in length.
- Each module comprises a rib, which after assembly is aligned with those of the other modules.
- an absorber according to the present invention may measure 50 m in length.
- the absorber according to the present invention is particularly suitable for the production of a Fresnel-type solar receiver.
- a plant of the Fresnel type can be seen, having at least one solar receiver according to the present invention.
- Multiple absorbers 6 connected in series are, for example, suspended by means of metal rods (not visible) which are roughly normal to lengthways axis X and distributed regularly to bear the load of the absorbers.
- the means of attachment of absorbers 6 are such that they allow the absorbers to expand lengthways and widthways without applying any stress, or applying the least possible stress, to them.
- the solar field consists of several lines of receivers, the characteristic length of which is between 50 and 200 metres.
- FIG. 1 As a non-restrictive illustration, we shall give a practical example embodiment of a casing according to the present invention, as represented in FIG. 1 .
- the casing of the absorber of FIG. 1 has two modules I, II.
- a module is 2550 mm in length, and has been manufactured from 316L stainless steel plates 2 mm thick. Two modules forming a casing are welded to delimit a parallelepipede, the external dimensions of which are as follows: length 5,100 mm, width 202 mm and thickness 15 mm. However, it should be noted that the casing may be between 5 mm and 50 mm thick, for example between 10 mm and 25 mm, and may be between 100 mm and 500 mm wide.
- the lower plate is arched, forming in a single piece lower wall 14 . 1 and the side walls, and the upper plate, forming the upper wall, is flat.
- Central rib 30 is 2 mm thick, and is welded to the lower and upper plates. Central rib 6 is initially welded to the lower plate. The upper plate has cut notches into which thickened portions of the rib fit. Rib 30 is then welded to the upper plate by melting the thickened portions.
- the central rib comprises vanes obtained by folding after pre-cutting the rib using a laser.
- the vanes are 30 mm in length; they are positioned every 150 mm and are inclined by 30° relative to axis X of the module. The vanes were produced before the central rib was attached.
- the plant comprises a receiver according to the present invention, mirrors 42 to reflect the solar rays towards the absorber, a system for supplying the receiver with liquid, a system for collecting heated liquid at the outlet of the receiver, and thermodynamic conversion means which comprise, for example, steam turbines, gas turbines, etc.
- the solar receiver is suspended above mirrors 42 represented in FIG. 6 . These mirrors reflect the solar radiation in the direction of solar receiver 2 , and more specifically in the direction of absorber 6 . Skirt 6 of receiver 2 redirects luminous flux F to outer face 6 . 1 of lower wall 14 . 1 of the casing of absorber 6 .
- Luminous flux F heats lower wall 14 . 1 , particularly if a suitable coating has been applied to it. Since the fluid flowing in the casing of absorber 6 is in contact with the internal face of lower wall 14 . 1 , the latter is heated. On exiting the absorber the heated fluid is conveyed towards the thermodynamic conversion means.
- the solar receiver according to the present invention provides improved efficiency compared to receivers of the state of the art, since the luminous flux collector area is increased. Indeed, the surface is flat and continuous, and has no empty spaces.
- the receivers of the state of the art conversely, have “gaps” between the pipes.
- the invention also avoids the need for heat exchanges in the rear of the absorber, as in the case of tubes, where the flux passing in the spaces between tubes heats a surface which then exchanges with the rear face of the tubes.
- the flat surface re-emissions in the infrared spectrum are reduced compared to the case of the developed area of tubes of the same width.
- the absorber is, furthermore, very efficient in managing varied luminous fluxes on the exposed surface, due to the reblending which takes place within the absorber.
- the reblending of the heat transfer fluid also allows homogenisation of the temperature of the metal walls, the effect of which is to reduce the deformations and the stresses related to expansion.
- the lifetime of the absorber, and therefore that of the solar receiver, are increased, since they are subjected to less thermal fatigue, reducing the risks of leakage and failure.
- the present invention applies principally to solar receivers of the Fresnel type.
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Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1054067 | 2010-05-27 | ||
FR1054067A FR2960624B1 (fr) | 2010-05-27 | 2010-05-27 | Module pour absorbeur thermique de recepteur solaire, absorbeur comportant au moins un tel module et recepteur comportant au moins un tel absorbeur |
PCT/EP2011/058568 WO2011147874A1 (fr) | 2010-05-27 | 2011-05-25 | Module pour absorbeur thermique de recepteur solaire, absorbeur comportant au moins un tel module et recepteur comportant au moins un tel absorbeur |
Publications (1)
Publication Number | Publication Date |
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US20130118479A1 true US20130118479A1 (en) | 2013-05-16 |
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US13/700,366 Abandoned US20130118479A1 (en) | 2010-05-27 | 2011-05-25 | Module for a thermal absorber of a solar receiver, absorber comprising at least one such module and receiver comprising at least one such absorber |
Country Status (10)
Country | Link |
---|---|
US (1) | US20130118479A1 (pt) |
EP (1) | EP2577181B1 (pt) |
AU (1) | AU2011257255B2 (pt) |
BR (1) | BR112012030086A2 (pt) |
ES (1) | ES2711835T3 (pt) |
FR (1) | FR2960624B1 (pt) |
MA (1) | MA34254B1 (pt) |
TN (1) | TN2012000554A1 (pt) |
TR (1) | TR201902410T4 (pt) |
WO (1) | WO2011147874A1 (pt) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110308514A1 (en) * | 2009-02-12 | 2011-12-22 | Hagay Cafri | Method for manufacturing a solar radiation absorber |
CN103277908A (zh) * | 2013-06-01 | 2013-09-04 | 广东五星太阳能股份有限公司 | 具有百叶窗翅片换热结构的高效平板太阳能空气集热器 |
US20150020793A1 (en) * | 2012-03-01 | 2015-01-22 | Abengoa Solar New Technologies, S.A. | Panel-based solar receiver |
US9322576B2 (en) | 2011-03-14 | 2016-04-26 | Commissariat á l'énergie atomique et aux énergies alternatives | Receiver module for solar power station with in-built thermal monitoring |
US9518764B2 (en) | 2011-05-31 | 2016-12-13 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Longer-life solar power plant receiver |
WO2017134631A3 (en) * | 2016-02-04 | 2017-11-16 | STANGRECIAK, Malgorzata | Solar air system |
US20190195535A1 (en) * | 2014-07-03 | 2019-06-27 | Jay D. Fischer | Solar energy system |
EP3836205A1 (en) * | 2019-12-13 | 2021-06-16 | Valeo Siemens eAutomotive Germany GmbH | Cooling device for semiconductor switching elements, power inverter device, arrangement and manufacturing method |
US11283400B2 (en) | 2018-08-11 | 2022-03-22 | Tyll Solar, Llc | Solar energy system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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LT6160B (lt) * | 2014-08-29 | 2015-05-25 | Uab "Saulės Vėjo Aruodai" | Šilumokaitis, skirtas šilumos energijos mainams užtikrinti |
DE102018217652A1 (de) * | 2018-10-15 | 2020-04-16 | Danfoss Silicon Power Gmbh | Strömungsverteiler zum Kühlen einer elektrischen Baugruppe, ein Halbleitermodul mit einem derartigen Strömungsverteiler und ein Verfahren zu dessen Herstellung |
GB2608996A (en) * | 2021-07-15 | 2023-01-25 | Yasa Ltd | Cooling apparatus |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3265127A (en) * | 1963-10-21 | 1966-08-09 | Ford Motor Co | Heat exchange element |
US4203425A (en) * | 1978-07-31 | 1980-05-20 | Clark Dana A | Inflatable solar collector |
US4265221A (en) * | 1978-06-09 | 1981-05-05 | Kendon Concepts | Solar energy collector assembly and method and apparatus for controlling the flow of a transfer medium |
US4270516A (en) * | 1977-11-23 | 1981-06-02 | Sunworks, Inc. | Solar energy collector |
US4368726A (en) * | 1980-10-03 | 1983-01-18 | Fortin Laminating Corporation | Solar heating panel |
US4385430A (en) * | 1980-08-11 | 1983-05-31 | Spectrolab, Inc. | Method of forming an energy concentrator |
US4892593A (en) * | 1984-10-09 | 1990-01-09 | Lew Hyok S | Solar trap |
US6632542B1 (en) * | 2000-05-11 | 2003-10-14 | Sandia Corporation | Solar selective absorption coatings |
US20090084374A1 (en) * | 2007-06-13 | 2009-04-02 | Mills David R | Solar energy receiver having optically inclined aperture |
US20110203573A1 (en) * | 2008-09-25 | 2011-08-25 | Solfast Pty. Ltd. | Solar Collector |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4154222A (en) * | 1977-09-15 | 1979-05-15 | Ying Mfg., Corp. | Solar collector for gas heating |
US4266531A (en) * | 1978-11-13 | 1981-05-12 | Solar Southwest | Rooftop solar energy collector panel |
DE3306800A1 (de) * | 1983-02-26 | 1984-08-30 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München | Waermetauscher |
DE8717825U1 (de) * | 1987-09-21 | 1990-06-07 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Flaches Wärmetauscherrohr |
US20090056703A1 (en) | 2007-08-27 | 2009-03-05 | Ausra, Inc. | Linear fresnel solar arrays and components therefor |
WO2009121174A1 (en) * | 2008-03-31 | 2009-10-08 | Menova Energy Inc. | Solar collector |
EP2112441A3 (de) * | 2008-04-21 | 2012-06-06 | Joma-Polytec GmbH | Solarabsorber und zugehöriger Solarkollektor |
-
2010
- 2010-05-27 FR FR1054067A patent/FR2960624B1/fr not_active Expired - Fee Related
-
2011
- 2011-05-25 EP EP11723030.0A patent/EP2577181B1/fr active Active
- 2011-05-25 TR TR2019/02410T patent/TR201902410T4/tr unknown
- 2011-05-25 US US13/700,366 patent/US20130118479A1/en not_active Abandoned
- 2011-05-25 AU AU2011257255A patent/AU2011257255B2/en active Active
- 2011-05-25 WO PCT/EP2011/058568 patent/WO2011147874A1/fr active Application Filing
- 2011-05-25 BR BR112012030086A patent/BR112012030086A2/pt not_active IP Right Cessation
- 2011-05-25 ES ES11723030T patent/ES2711835T3/es active Active
- 2011-05-25 MA MA35402A patent/MA34254B1/fr unknown
-
2012
- 2012-11-23 TN TNP2012000554A patent/TN2012000554A1/fr unknown
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3265127A (en) * | 1963-10-21 | 1966-08-09 | Ford Motor Co | Heat exchange element |
US4270516A (en) * | 1977-11-23 | 1981-06-02 | Sunworks, Inc. | Solar energy collector |
US4265221A (en) * | 1978-06-09 | 1981-05-05 | Kendon Concepts | Solar energy collector assembly and method and apparatus for controlling the flow of a transfer medium |
US4203425A (en) * | 1978-07-31 | 1980-05-20 | Clark Dana A | Inflatable solar collector |
US4385430A (en) * | 1980-08-11 | 1983-05-31 | Spectrolab, Inc. | Method of forming an energy concentrator |
US4368726A (en) * | 1980-10-03 | 1983-01-18 | Fortin Laminating Corporation | Solar heating panel |
US4892593A (en) * | 1984-10-09 | 1990-01-09 | Lew Hyok S | Solar trap |
US6632542B1 (en) * | 2000-05-11 | 2003-10-14 | Sandia Corporation | Solar selective absorption coatings |
US20090084374A1 (en) * | 2007-06-13 | 2009-04-02 | Mills David R | Solar energy receiver having optically inclined aperture |
US20110203573A1 (en) * | 2008-09-25 | 2011-08-25 | Solfast Pty. Ltd. | Solar Collector |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110308514A1 (en) * | 2009-02-12 | 2011-12-22 | Hagay Cafri | Method for manufacturing a solar radiation absorber |
US9322576B2 (en) | 2011-03-14 | 2016-04-26 | Commissariat á l'énergie atomique et aux énergies alternatives | Receiver module for solar power station with in-built thermal monitoring |
US9518764B2 (en) | 2011-05-31 | 2016-12-13 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Longer-life solar power plant receiver |
US20150020793A1 (en) * | 2012-03-01 | 2015-01-22 | Abengoa Solar New Technologies, S.A. | Panel-based solar receiver |
CN103277908A (zh) * | 2013-06-01 | 2013-09-04 | 广东五星太阳能股份有限公司 | 具有百叶窗翅片换热结构的高效平板太阳能空气集热器 |
US20190195535A1 (en) * | 2014-07-03 | 2019-06-27 | Jay D. Fischer | Solar energy system |
US11067312B2 (en) * | 2014-07-03 | 2021-07-20 | Tyll Solar, Llc | Solar energy system |
WO2017134631A3 (en) * | 2016-02-04 | 2017-11-16 | STANGRECIAK, Malgorzata | Solar air system |
US11283400B2 (en) | 2018-08-11 | 2022-03-22 | Tyll Solar, Llc | Solar energy system |
US11870392B2 (en) | 2018-08-11 | 2024-01-09 | Tyll Solar, Llc | Solar energy system |
EP3836205A1 (en) * | 2019-12-13 | 2021-06-16 | Valeo Siemens eAutomotive Germany GmbH | Cooling device for semiconductor switching elements, power inverter device, arrangement and manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
EP2577181B1 (fr) | 2018-11-21 |
WO2011147874A1 (fr) | 2011-12-01 |
MA34254B1 (fr) | 2013-05-02 |
ES2711835T3 (es) | 2019-05-07 |
EP2577181A1 (fr) | 2013-04-10 |
AU2011257255B2 (en) | 2016-12-15 |
TR201902410T4 (tr) | 2019-03-21 |
AU2011257255A1 (en) | 2012-12-20 |
BR112012030086A2 (pt) | 2019-09-24 |
TN2012000554A1 (fr) | 2014-04-01 |
FR2960624A1 (fr) | 2011-12-02 |
FR2960624B1 (fr) | 2012-08-31 |
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