FR2507753A1 - Cover panel for solar heat collector - has two directional movement produced by winch and cylinder - Google Patents

Cover panel for solar heat collector - has two directional movement produced by winch and cylinder Download PDF

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Publication number
FR2507753A1
FR2507753A1 FR8111502A FR8111502A FR2507753A1 FR 2507753 A1 FR2507753 A1 FR 2507753A1 FR 8111502 A FR8111502 A FR 8111502A FR 8111502 A FR8111502 A FR 8111502A FR 2507753 A1 FR2507753 A1 FR 2507753A1
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FR
France
Prior art keywords
receiver
panel
front face
solar
translation
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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.)
Granted
Application number
FR8111502A
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French (fr)
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FR2507753B1 (en
Inventor
Didier Lepoultel
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MEDITERRANEE CONST NAVALES IND
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MEDITERRANEE CONST NAVALES IND
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Priority to FR8111502A priority Critical patent/FR2507753B1/en
Publication of FR2507753A1 publication Critical patent/FR2507753A1/en
Application granted granted Critical
Publication of FR2507753B1 publication Critical patent/FR2507753B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/10—Protective covers or shrouds; Closure members, e.g. lids
    • 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

Abstract

The solar panel has a casing (12) supporting side and rear tube walls through which flows the heating fluid. The front face (14) is open to the solar radiation. An insulated cover (16) made from self supporting insulating material is positioned over the solar collector during periods of zero solar radiation. The panel is operated in the direction of the arrow (f1) by a winch (20) and, when the panel is in position over the collector, piston actuators operating in the direction of the arrow (f2) seal the isolating panel against the collector.

Description

La présente invention est relative à un récepteur solaire, en particulier du type à fluide caloporteuffi monophasique, chauffé par les rayons soladres réfléchis par un champ dfflhéliostats. Un tel récepteur est constitué d'une cavité présentant une surface cylindrique ou prismatique ayant une face avant ouverte placée dans le champ d'héliostats et des parois latérales et postérieures tapissées de tubes dans lesquels circule le fluide caloporteur. The present invention relates to a solar receiver, in particular of the monophasic heat-transfer fluid type, heated by the soladar rays reflected by a field of dfflheliostats. Such a receiver consists of a cavity having a cylindrical or prismatic surface having an open front face placed in the field of heliostats and side and rear walls lined with tubes in which the heat transfer fluid circulates.

Pendant les périodes dfarret, notammen: la nuit, ou lors de passages nuageux de longue durée, il peut etre nécessaire de vidanger les tubes du récepteur ou de réchauffer le fluide caloporteur qu'ils contiennent pour éviter un refroidissement du récepteur. Dans ce cas, il en résulte un gaspillage d'énergie, s'accompagnant d'une durée importante de remise en route quotidienne de la chaudière et se traduisant par une diminution notable du rendement global de l'installation. During shutdown periods, in particular: at night, or during long cloudy periods, it may be necessary to drain the receiver tubes or warm the heat transfer fluid they contain to avoid cooling of the receiver. In this case, this results in a waste of energy, accompanied by a significant duration of daily restarting of the boiler and resulting in a significant reduction in the overall efficiency of the installation.

La présente invention se propose d'apporter des moyens permettant de pallier ces inconvénients. The present invention proposes to provide means for overcoming these drawbacks.

A cet effet, elle vise un récepteur solaire du type mentionné ci-dessus, caractérisé en ce que l'enceinte constituant le récepteur solaires côté flux incident, est pourvue d'un organe d'obturation permettant de fermer ladite enceinte pendant les périodes d'arret de la chaudière, afin de conserver les calories acquises dans le récepteur. To this end, it is aimed at a solar receiver of the type mentioned above, characterized in that the enclosure constituting the solar receiver on the incident flux side, is provided with a shutter member making it possible to close said enclosure during periods of shutdown of the boiler, in order to conserve the calories acquired in the receiver.

Selon une caractéristique de cette invention, ledit organe d'obturation est réalisé sous la forme d'un panneau constitué d'un ou de plusieurs éléments autoportants à isolation renforcée, ce panneau étant muni de moyens l'entraf- nant en translation parallèlement à la face avant du récepteur et de moyens l'entral hant en translation perpendiculairement à ladite face avant, pour l'appliquer contre celle-ci. According to a characteristic of this invention, said shutter member is produced in the form of a panel consisting of one or more self-supporting elements with reinforced insulation, this panel being provided with means driving it in translation parallel to the front face of the receiver and means the central hant in translation perpendicular to said front face, to apply it against the latter.

Selon une autre caractéristique de cette invention, chaque élément est pourvu de ses propres supports et de matériaux assurant l'étanchéité à l'air et à la chaleur. According to another characteristic of this invention, each element is provided with its own supports and materials ensuring air and heat sealing.

D'autres caractéristiques et avantages de cette invention ressortiront de la description faite ci-après en référence aux dessins annexés, qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Other characteristics and advantages of this invention will emerge from the description given below with reference to the appended drawings, which illustrate an embodiment thereof devoid of any limiting character.

Sur les dessins
- la Figure 1 est une vue, en élévation latérale et coupe verticale partielle, d'un récepteur solaire muni d'un panneau d'obturation selon l'invention et,
- la Figure 2 est une vue en élévation frontale de la Figure I.On the drawings
FIG. 1 is a view, in side elevation and partial vertical section, of a solar receiver fitted with a closure panel according to the invention and,
- Figure 2 is a front elevational view of Figure I.

Les dessins représentent de façon schématique la partie supérieure d'un récepteur solaire, désigné dans son ensemble par la référence 10. Ce récepteur est constitué, comme connu, d'une cavité 12 de forme parallélé pipédique rectangle, dont la face avant ouverte 14 est placée dans le champ d'héliostats (non représentés). Ce récepteur étant de type connu, on ne le décrira pas, et on rappellera simplement que ses parois latérales et postérieures sont tapissées de tubes dans lesquels circule le fluide caloporteur, ces tubes (non représentés) débouchant sur des collecteurs d'entrée et de sortie. The drawings schematically represent the upper part of a solar receiver, designated as a whole by the reference 10. This receiver consists, as known, of a cavity 12 of rectangular piped parallel shape, the open front face 14 of which is placed in the heliostats field (not shown). This receiver being of known type, it will not be described, and it will simply be recalled that its side and rear walls are lined with tubes in which the heat transfer fluid circulates, these tubes (not shown) opening onto inlet and outlet manifolds .

Selon l'invention, on prévoit des moyens pour obturer l'enceinte 12 du récepteur solaire 10, du côté du flux incident, afin de conserver, pendant les périodes d'arrêt, les calories accumulées dans le récepteur. According to the invention, means are provided for closing off the enclosure 12 of the solar receiver 10, on the side of the incident flux, in order to conserve, during the downtime, the calories accumulated in the receiver.

Dans l'exemple représenté ici, ces moyens d'obturation sont réalisés sous la forme d'un panneau 16 constitué de trois éléments autoportants 161, 16, 163 > à isolation renforcée, permettant d'encaisser sans déformation les
2 dilatations différentielles résultant des différences de température entre l'enceinte 12 et l'extérieur. Le panneau 16 peut se déplacer axialement dans des chemins de roulement 18, 18'. A cet effet, chacun des éléments 161, 162 > 163 est pourvu de ses propres supports et galets de roulement. Ces éléments sont en outre garnis des matériaux assurant leur étanchéité à l'air et à la chaleur.In the example shown here, these sealing means are produced in the form of a panel 16 consisting of three self-supporting elements 161, 16, 163> with reinforced insulation, making it possible to collect without deformation the
2 differential expansions resulting from temperature differences between enclosure 12 and the outside. The panel 16 can move axially in raceways 18, 18 '. For this purpose, each of the elements 161, 162> 163 is provided with its own supports and rollers. These elements are also filled with materials ensuring their air and heat tightness.

Selon cette invention, le panneau 16 comporte des moyens permettant de le déplacer - selon un mouvement de translation parallèlement à la face avant 14 du ré-
cepteur (flèche fl); - selon une translation perpendiculaire à cette face avant 14, afin de l'appli
quer sur celle-ci (flèche f2). According to this invention, the panel 16 comprises means making it possible to move it - in a translational movement parallel to the front face 14 of the
receiver (arrow fl); - in a translation perpendicular to this front face 14, in order for the app
quer on it (arrow f2).

Dans l'exemple de réalisation non limitatif représenté sur les dessins, le mouvement de translation du panneau d'obturation 16 selon la flèche fl est obtenu à l'aide d'un treuil 20, entrakantt le panneau par l'intermédiaire d'une chape ou similaire 22, et le mouvement de translation selon la flèche F2 est obtenu à l'aide de vérins (non visibles sur le dessin).  In the nonlimiting exemplary embodiment shown in the drawings, the translational movement of the closure panel 16 according to the arrow fl is obtained using a winch 20, entrakantt the panel by means of a yoke or the like 22, and the translational movement according to arrow F2 is obtained using jacks (not visible in the drawing).

Grâce à la présence du panneau d'obturation 16 et de ses moyens de commande, on peut, selon l'invention, réaliser une fermeture étanche de l'enceinte 12 du récepteur solaire, ce qui permet de conserver, pendant les périodes d'arrêt de la chaudière, les calories acquises dans le récepteur, et permet de maintenir la chaudière pleine de fluide caloporteur sans qu'il soit nécessaire de la vidanger pendant les périodes de repos, comme c!est le cas avec les chaudières classiques. On réalise ainsi d'importantes économies d'énergie, qui amélioreront de façon très significative le rendement global de la chaudière. Cette solution permet également d'obtenir des démarrages quotidiens beaucoup plus rapides qu'avec les chaudières dépourvues d'organe d'obturation, le gain étant de l'ordre de une heure par jour. Thanks to the presence of the closure panel 16 and its control means, it is possible, according to the invention, to make a sealed closure of the enclosure 12 of the solar receiver, which makes it possible to conserve, during the periods of standstill of the boiler, the calories acquired in the receiver, and makes it possible to keep the boiler full of heat-transfer fluid without it being necessary to drain it during the periods of rest, as is the case with conventional boilers. Significant energy savings are thus achieved, which will significantly improve the overall efficiency of the boiler. This solution also makes it possible to obtain daily starts much faster than with boilers without a shutter member, the gain being of the order of one hour per day.

Pour améliorer encore le rendement de l'installation, l'invention prévoit un réservoir tampon 24, convenablement calorifugé, contenant une certaine quantité de fluide caloporteur (sels fondus). L'inertie du fluide thermique disponible en haut de tour se trouve multipliée par 2 ou 3. Til est alors possible, lors des périodes d'arret, et notamment la nuit, de faire recirculer le fluide caloporteur dans le récepteur à partir de ce réservoir tampon, pour maintenir le récepteur et les tuyauteries associées à une température supérieure à celle de figeage des sels caloporteurs, sans avoir recours à un chauffage d'appoint. To further improve the efficiency of the installation, the invention provides a buffer tank 24, suitably insulated, containing a certain amount of heat transfer fluid (molten salts). The inertia of the thermal fluid available at the top of the tower is multiplied by 2 or 3. It is then possible, during shutdown periods, and especially at night, to recirculate the heat transfer fluid in the receiver from this tank buffer, to maintain the receiver and the associated piping at a temperature higher than that of freezing of the heat-transfer salts, without having to use an auxiliary heating.

La présence de cet obturateur permet également d'effectuer des circu lations de sel pendant les périodes d'arret, à partir des réservoirs appelés "froids".  The presence of this shutter also makes it possible to carry out circulations of salt during the periods of standstill, from the tanks called "cold".

Eien entendu, cette invention n'est pas limitée à l'exemple de réalisation décrit et représenté, mais elle en englobe toutes les variantes.  Eien understood, this invention is not limited to the embodiment described and shown, but it encompasses all variants.

Claims (5)

REVENDICA TIONSREVENDICA TIONS 1 - Récepteur solaire du type à fluide caloporteur monophasique, chauffé par les rayons solaires réfléchis par un champ d'héliostats, comportant un récepteur constitué d'une cavité dont la surface est cylindrique ou prismatique, ayant une face avant ouverte placée dans le champ d'héliostats et des parois latérales et postérieure tapissées de tubes dans lesquels circule le fluide caloporteur, ce récepteur étant caractérisé en ce que ladite enceinte (12) constituant le récepteur solaire (10), côté flux incident, est pourvue d'un organe d'obturation (16) permettant de fermer ladite enceinte pendant les périodes d'arrêt du récepteur, afin de conserver les calories acquises dans celui-ci. 1 - Solar receiver of the monophasic coolant type, heated by solar rays reflected by a field of heliostats, comprising a receiver consisting of a cavity whose surface is cylindrical or prismatic, having an open front face placed in the field of heliostats and side and rear walls lined with tubes in which the heat transfer fluid circulates, this receiver being characterized in that said enclosure (12) constituting the solar receiver (10), on the incident flow side, is provided with a shutter (16) enabling said enclosure to be closed during periods when the receiver is stopped, in order to conserve the calories acquired therein. 2 - Récepteur solaire selon la revendication 1, caractérisé en ce que ledit organe d'obturation (16) est réalisé sous la forme d'un panneau constitué d'un ou de plusieurs éléments (161, 16z, 16 ) autoportants à isolation ren 2 - Solar receiver according to claim 1, characterized in that said shutter member (16) is made in the form of a panel consisting of one or more self-supporting elements (161, 16z, 16) with ren insulation 3 forcée, ledit panneau étant muni de moyens l'entraihant en translation parallèlement à la face avant du récepteur et de moyens ltentrainant en translation perpendiculairement à ladite face avant, pour l'appliquer contre celle-ci. 3 forced, said panel being provided with means driving it in translation parallel to the front face of the receiver and means ltentrainant in translation perpendicular to said front face, to apply it against the latter. 3 - Récepteur selon la revendication 2, caractérisé en ce que chaque élément (161, 162, 163) est muni de ses propres supports et des matériaux assurant l'étanchéité à l'air et à la chaleur. 3 - Receiver according to claim 2, characterized in that each element (161, 162, 163) is provided with its own supports and materials ensuring air and heat tightness. 4 - Récepteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les moyens assurant la translation du panneau d'obturation (16) parallèlement à la face avant du récepteur consistent en un treuil (20), relié au panneau par chape (22) ou similaire, le panneau pouvant coulisser dans des chemins de roulement (18, 18'). 4 - Receiver according to any one of claims 1 to 3, characterized in that the means ensuring the translation of the closure panel (16) parallel to the front face of the receiver consist of a winch (20), connected to the panel by yoke (22) or the like, the panel being able to slide in raceways (18, 18 '). 5 - Récepteur selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens assurant la translation du panneau d'obturation (16) perpendiculairement à la face avant consistent en un ou plusieurs vérins.  5 - Receiver according to any one of the preceding claims, characterized in that the means ensuring the translation of the closure panel (16) perpendicular to the front face consist of one or more cylinders.
FR8111502A 1981-06-11 1981-06-11 SHUTTER PANEL OF A SOLAR RECEIVER Expired FR2507753B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8111502A FR2507753B1 (en) 1981-06-11 1981-06-11 SHUTTER PANEL OF A SOLAR RECEIVER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8111502A FR2507753B1 (en) 1981-06-11 1981-06-11 SHUTTER PANEL OF A SOLAR RECEIVER

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FR2507753A1 true FR2507753A1 (en) 1982-12-17
FR2507753B1 FR2507753B1 (en) 1986-05-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722325A (en) * 1985-06-14 1988-02-02 Fulkerson Paul L Solar shutter arrangement
EP2728275A1 (en) * 2012-11-06 2014-05-07 ABB Technology AG Apparatus for generating heat from solar radiation, thermal insulation therefore and solar heat plant therewith

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1215145A (en) * 1958-11-06 1960-04-14 Le Materiel Thermique Moderne Device for closing an opening such as the mouth of an oven, an oven or the like
NL7501061A (en) * 1975-01-29 1976-08-02 Nijmegen Metaal B V Shield with sliding plates - has plates sliding in rails in stack and becoming progressively shorter
GB2006420A (en) * 1977-10-18 1979-05-02 Rolls Royce Aperture Control Apparatus for a Solar Collector
FR2431101A1 (en) * 1978-06-30 1980-02-08 Fives Cail Babcock Solar heater - comprising parallelepipedal cavity with open front face in focal plane of heliostats and tubes carrying fluid covering walls

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1215145A (en) * 1958-11-06 1960-04-14 Le Materiel Thermique Moderne Device for closing an opening such as the mouth of an oven, an oven or the like
NL7501061A (en) * 1975-01-29 1976-08-02 Nijmegen Metaal B V Shield with sliding plates - has plates sliding in rails in stack and becoming progressively shorter
GB2006420A (en) * 1977-10-18 1979-05-02 Rolls Royce Aperture Control Apparatus for a Solar Collector
FR2431101A1 (en) * 1978-06-30 1980-02-08 Fives Cail Babcock Solar heater - comprising parallelepipedal cavity with open front face in focal plane of heliostats and tubes carrying fluid covering walls

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722325A (en) * 1985-06-14 1988-02-02 Fulkerson Paul L Solar shutter arrangement
EP2728275A1 (en) * 2012-11-06 2014-05-07 ABB Technology AG Apparatus for generating heat from solar radiation, thermal insulation therefore and solar heat plant therewith

Also Published As

Publication number Publication date
FR2507753B1 (en) 1986-05-16

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