WO2014064314A1 - Récepteur longitudinal d'énergie solaire thermique - Google Patents

Récepteur longitudinal d'énergie solaire thermique Download PDF

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Publication number
WO2014064314A1
WO2014064314A1 PCT/ES2013/070721 ES2013070721W WO2014064314A1 WO 2014064314 A1 WO2014064314 A1 WO 2014064314A1 ES 2013070721 W ES2013070721 W ES 2013070721W WO 2014064314 A1 WO2014064314 A1 WO 2014064314A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
tubes
longitudinal
tube
thermal energy
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.)
Ceased
Application number
PCT/ES2013/070721
Other languages
English (en)
Spanish (es)
Inventor
José Mª MARTINEZ-VAL PEÑALOSA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universidad Politecnica de Madrid
Original Assignee
Universidad Politecnica de Madrid
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 Universidad Politecnica de Madrid filed Critical Universidad Politecnica de Madrid
Publication of WO2014064314A1 publication Critical patent/WO2014064314A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/74—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other
    • F24S10/742—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other the conduits being parallel to each other
    • 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
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/74—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other
    • F24S10/748—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits are not fixed to heat absorbing plates and are not touching each other the conduits being otherwise bent, e.g. zig-zag
    • 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
    • F24S23/77—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with flat reflective plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/60—Arrangements for draining the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/80—Accommodating differential expansion of solar collector elements
    • 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
    • F24S80/40—Casings
    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention falls within the field of solar power plants that require concentration of the original radiation, which in this case is reflected by a series of longitudinal, horizontal or slightly inclined mirrors, and orientable by rotating around its axis of longitudinal symmetry ; focusing the radiation reflected on a similarly longitudinal receiver, with its long horizontal axis or slightly inclined, and specifically deals with the receiver that captures the concentrated radiation.
  • This invention is related to two other inventions, whose inventor is the same as this application.
  • the first one is the ES 2 321 576 B2 patent, consisting of a compensated expansion and pressure receiver
  • the second invention is ES 2 345 759 B2, in which a longitudinal collector is presented whose tubes are grouped into independent beams , central and adjacent, thermally insulated from each other longitudinally, circulating the heating fluid first through both adjacent beams in parallel, to be then injected into the central beam.
  • ES 2 321 576 B2 a device is presented to compensate for the expansion in a short collector module or drawer, the drawer in which the radiation absorbing tubes undergo a dilation when heated which is not greater than the edge is understood lower drawer crosswise. It also contains an active device to compensate for internal pressure and always keep it at a given level.
  • ES 2 345 759 B2 a set of these drawers or manifold modules are longitudinally grouped, the expansion and pressure being compensated in each module.
  • the aforementioned devices are useful for applications where you want to keep relative vacuum inside the drawer, or want to fill it with an inert gas, to avoid air oxidation.
  • the multi-module assembly is complicated, expensive and with great loss of manometric load in the fluid, due to the numerous elbows and strangulation and widening that involve so many lyres of Expansion compensation, which in turn are the connecting elements between the successive module tubes.
  • the technical problem that this invention comes to solve is to present a single-casing manifold assembly, of indefinitely long length, which incorporates a passive pressure compensation device in relation to the local atmosphere without the need for active components such as the compressors, and an assimilation device for changes in length due to temperature variations in the tube bundles.
  • the invention consists in configuring the solar thermal energy receiver by means of a set of tube bundles, and eventually there can be bundles of a single tube, said bundles being located entirely inside a parallelepiped shaped housing, said tubes extending along of the housing, and filling the tube bundles the width of the housing, of which five of the walls are solid, mechanically resistant and insulated thermally, and one of them is open, but it is joined by a transparent window with perimeter fence of similar or equal material to the housing, said window being constituted by successive modules mounted longitudinally, each module being constituted by a solid fence to which the transparent window is adhered by a seal of silicone or other closure material, and there are crossbars or sleepers on the open face of the parallelepiped of the housing corresponding to the window, said stringers conferring mechanical resistance to the side walls of the housing, being in turn support pieces of the successive window modules by their longitudinal ends, there being also a square-shaped piece along the entire open perimeter of the side walls and the ends of the housing, with the which square piece adjusts the fence
  • Each tube bundle is longitudinally insulated by partitions of thickness similar to the thickness of the pipes, from the dorsal or upper wall of the housing to the widest part of the beam, the partitions being able to go through pipes connected between bundles of the same pair, when they are on each side of the longitudinal plane of symmetry, to ensure similarity of thermal evolutions in both beams.
  • the wall of the housing is drilled with a plurality of ducts that are provided with relief valves, directed in one direction or another, so when the pressure inside the interior rises waterproof housing, due to the increase in temperature, it is relieved by expelling air from the interior into the atmosphere through the overpressure valves; and when the pressure inside the housing decreases, the air enters the atmosphere by opening the depression relief valve in that direction.
  • Figure 1 shows a diagram, in straight section, of bundles of receiver tubes, their thermal insulation partitions, the suspended bars that support the tubes, and the window with its fence and joints. Relief valves in their ducts and lugs or brackets for fixing the housing to the general clamping structure are also shown.
  • Figure 2 shows the longitudinal scheme of the receiver, with the header wall on the left and the border on the right; and the cut of several sleepers, as well as the bars of subjection, including those of the space of the border.
  • Figure 3 shows an upper longitudinal scheme of a collector with 10 beams paired two to two, as well as the confine space and the U-joints.
  • Figure 4 shows the longitudinal scheme of a double U lyre concatenated vertically / obliquely and obliquely / horizontally.
  • Figure 5 shows the diagram in straight section of a crossbeam of the frame of the housing and of the glass modules.
  • Figure 6 shows an upper longitudinal diagram of a manifold for heating fluid that does not change phase as it passes through the receiver.
  • Tube of the intermediate return circuit of the intermediate circuit, which with the tube 13 constitutes said semi-circuit, which forms even with the halfway circuit formed by the tubes 11 and 12.
  • Left side circuit one-way tube, pair of 16. 16. Return tube of the left side circuit, pair of 15, with which it constitutes said circuit.
  • Lugs or brackets for securing the housing are provided.
  • the invention is realized by assembling a set of parallel tubes or conduits, of the appropriate length to the field of mirrors that the reflected radiation sends to it, within a rigid and thermally insulated housing, with mechanical resistance to support the weight of said tubes, filled of the fluid heater.
  • the housing is shaped like a very long parallelepiped, and one of its wide and long faces is devoid of a wall. Throughout this non-existent wall perimeter, the housing has a rigid square (4), under which a silicone or resin joint of similar characteristics is adhered, against which the corresponding window module, composed of of an equally rigid fence (3) and with silicone gasket, and the glass module (27). These modules are much shorter in length than the housing, which can measure 100 meters or more, while the window module is about 5 meters long.
  • sleepers (26) are used that go from side to side of the housing section, giving rigidity to the above perimeter of the open part of the housing.
  • sleepers have an inverted T-shape, with the trunk of the T welded or attached at its ends to the bottom of the side walls of the housing.
  • the wings of the T (46), which remain in the lower part, serve as flaps to receive the ends of the fences of the window modules.
  • the window modules are in turn coated with silicone on the side part of the fence, and also, or alternatively, pressed to the perimeter square (4) of the housing by means of strap clamps (6).
  • Each tube or bundle of tubes in one application, has an assigned thermal function, specified in being part of a half-circuit, one way or return, of a given circuit; which makes the tube bundles (including if they are monotubes) are designated by pairs, which are the semi-circuits in question; the circuit being closed on the side of the boundary (30), by means of a U (32), if the expected deformation of said semi-circuits is similar, as is the biphasic case in which there is boiling, and therefore with very uniform temperature ; or closing with expansion lyres (31), with spatial configuration, similar to several U concatenated.
  • thermal function specified in being part of a half-circuit, one way or return, of a given circuit; which makes the tube bundles (including if they are monotubes) are designated by pairs, which are the semi-circuits in question; the circuit being closed on the side of the boundary (30), by means of a U (32), if the expected deformation of said semi-circuits is similar, as is the bi
  • the invention is mounted with four circuits, two corresponding to the sides of the receiver, for the preheating of the liquid, in the strips with a lower level of concentrated radiation, being located separately, such as is shown in figure 3; to avoid a complex connection from one side of the housing to the other, across it, at the end; whereby space lira paths (36 and 37) are available to close each of the said circuits.
  • the next circuit in the order of temperature is that of boiling, which is located in the center, with a one-way (9) and a return (10) conduit, since the boiling has the highest film coefficient, and therefore can accommodate a high value of the intensity of the concentrated radiation without requiring much surface or much temperature difference between the radiation receiving surface and the boiling fluid.
  • thermodynamic order which is the geometrically intermediate one in Figure 3, is the steam overheat, composed in that figure by two tubes in each semicircuit, on opposite sides of the housing both outbound (1 1 and 12 ) as a return (13 and 14), joining the semicircuits first each one, and then these with each other through a space lyre (35), which develops at two levels of height, which requires additional suspension bars (22).
  • each tube bundle is located adjacent to its pair, joined at the end by a space lyre (31).
  • a space lyre 331
  • circuits there is an even number of circuits, and half of the circuits, corresponding to one of the sides of the housing, can go in parallel, so that each circuit has its own fluid inlet and outlet through the header, or they can be mounted in series, in this case there is only one inlet (47) and one outlet (48) for each half of the housing, the successive circuits being linked through a joint U-shaped (49) in the header wall (29).
  • the heating fluids may have a very high solidification point, whereby it is possible to evacuate the fluid from the solar receiver circuit, and send it to a conveniently insulated tank.
  • the bundles of tubes are mounted with a small inclination, the head (29) being at a lower level than the border wall (30), the extraction of the fluid being carried out by the head; that in case of having U-joints connecting two contiguous penetrations, said unions must have in their lower part a tube, equipped with an opening-closing valve, to drain the fluid.
  • a non-condensable or soluble gas ejector (51) is disposed in the highest part of the expansion lines (31), which are evacuated to the interior space of the housing.
  • the internal pressure of the housing is relaxed if it exceeds the overhead pressure relief valve (24), said pressure value being greater than the local atmospheric pressure, and preferably greater than 10% of said pressure ; the internal depression opening valves (25) being set to open when the internal pressure drops below 90% of the local atmospheric pressure.

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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)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne un récepteur à tubes parallèles, contenus dans une carcasse dont une des parois terminales contient toutes les entrées des tubes qui ne présentent pas de sortie sur la paroi opposée ou voisine, du fait que les tubes sont assemblés par deux de manière non univoque en fonction de leur fonction thermique et raccordés entre eux au moyen d'une lyre de dilatation dans l'extrémité de la paroi terminale, chaque paire formant un circuit de fluide qui parcourt la carcasse dans le sens aller et le sens retour. La carcasse possède une fenêtre composée de modules, assemblés sur des traverses qui de surcroît confèrent une rigidité transversale à la carcasse, qui est étanche; et sa pression interne est maintenue constante du fait de ses vannes de détente respectivement mises en oeuvre soit par une surpression interne et soit par une dépression.
PCT/ES2013/070721 2012-10-23 2013-10-18 Récepteur longitudinal d'énergie solaire thermique Ceased WO2014064314A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201201056A ES2394353B2 (es) 2012-10-23 2012-10-23 Receptor longitudinal de energía solar térmica
ESP201201056 2012-10-23

Publications (1)

Publication Number Publication Date
WO2014064314A1 true WO2014064314A1 (fr) 2014-05-01

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ID=47520455

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2013/070721 Ceased WO2014064314A1 (fr) 2012-10-23 2013-10-18 Récepteur longitudinal d'énergie solaire thermique

Country Status (2)

Country Link
ES (1) ES2394353B2 (fr)
WO (1) WO2014064314A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9765992B2 (en) * 2013-12-24 2017-09-19 General Electric Technology Gmbh Solar receiver

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261330A (en) * 1979-03-07 1981-04-14 Reinisch Ronald F Solar heat collector
DE4239395A1 (de) * 1992-11-24 1994-05-26 Stiebel Eltron Gmbh & Co Kg Offener Solarkollektor
US20090056699A1 (en) * 2007-08-27 2009-03-05 Mills David R Linear fresnel solar arrays and receievers therefor
WO2010076350A1 (fr) * 2008-12-31 2010-07-08 Universidad Politécnica de Madrid Collecteur d'énergie solaire thermique
ES2345759A1 (es) * 2010-06-01 2010-09-30 Universidad Politecnica De Madrid Receptor para central solar con espejos longitudinales.
WO2011044281A2 (fr) * 2009-10-07 2011-04-14 Areva Solar, Inc. Récepteur thermique solaire à tubes multiples

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261330A (en) * 1979-03-07 1981-04-14 Reinisch Ronald F Solar heat collector
DE4239395A1 (de) * 1992-11-24 1994-05-26 Stiebel Eltron Gmbh & Co Kg Offener Solarkollektor
US20090056699A1 (en) * 2007-08-27 2009-03-05 Mills David R Linear fresnel solar arrays and receievers therefor
WO2010076350A1 (fr) * 2008-12-31 2010-07-08 Universidad Politécnica de Madrid Collecteur d'énergie solaire thermique
WO2011044281A2 (fr) * 2009-10-07 2011-04-14 Areva Solar, Inc. Récepteur thermique solaire à tubes multiples
ES2345759A1 (es) * 2010-06-01 2010-09-30 Universidad Politecnica De Madrid Receptor para central solar con espejos longitudinales.

Also Published As

Publication number Publication date
ES2394353A1 (es) 2013-01-30
ES2394353B2 (es) 2013-05-28

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