ES2388977A1 - Device for the heating of fluids by solar energy, by means of concentration solar panels (Machine-translation by Google Translate, not legally binding) - Google Patents

Device for the heating of fluids by solar energy, by means of concentration solar panels (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES2388977A1
ES2388977A1 ES201001278A ES201001278A ES2388977A1 ES 2388977 A1 ES2388977 A1 ES 2388977A1 ES 201001278 A ES201001278 A ES 201001278A ES 201001278 A ES201001278 A ES 201001278A ES 2388977 A1 ES2388977 A1 ES 2388977A1
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fluid
type
solar
tubes
radiation
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ES2388977B1 (en
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Francisco BARBA TRIGUEROS
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/30Arrangements for concentrating solar-rays for solar heat collectors with lenses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/70Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/74Solar 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
    • F24S10/742Solar 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/20Climate change mitigation technologies for sector-wide applications using renewable energy

Abstract

The device is formed by an external frame as a container, an optical surface, formed by an outer protection and insulation glass, followed by the cylindrical lenses arranged on the entire surface of the panel, below them, in the case of more simple (type 1), the tubes or the heat sensor that contains the heat transfer fluid, where the beams of linear rays impinge. In the case of needing a higher temperature of the fluid (type 2), these beams of rays are guided by another set of diverging lenses, mirrors and a new converging lens, as in the previous case, to the tubes or heat collectors. The last layer, below the previous ones, is composed of layers of thermal insulation that surrounds the tubes and a small deposit, for fluid, vapor or liquid. On the side of the glass, on the sides and in order to facilitate the positioning of the device, has been machined adapters for phototransistors (solar trackers). It has dimensions of approx. 2000x 1000x200 mm. Being the catchment area of about 2 m2. (Machine-translation by Google Translate, not legally binding)

Description

DISPOSITIVOS PARA EL CALENTAMIENTO DE FLUIDOS TERMICOS, POR ENERGIA SOLAR, MEDIANTE SUPERFICIES PLANAS TIPO PANELES SOLARES, PROVISTAS DE LENTES PARA LA CONCENTRACION DE LA RADIACION, TIPO DIOPTRIOS CILINDRICOS, DE FOCO LINEAL (NO PUTUAL). La presente invención se refiere a un nuevo dispositivo óptico-mecánico, que permite mediante la concentración de la radiación solar, por medio de un novedoso sistema de lentes delgadas, cilíndricas y lineales, el calentamiento del fluido caloportador que se vaya a utilizar hasta temperaturas variables, configurables de hasta 350 o C y mayores dependiendo de la necesidad especificas, y a precios de mercado similares a los de otras tecnologías. Es claro que en la sociedad actual las necesidades energéticas crecientes y a la vez la concienciación sobre la necesidad de energías limpias han dado lugar a un desarrollo espectacular de las llamadas energías renovables. En la actualidad y centrándonos en el sector solar de energías renovables, hay básicamente dos tipos de aprovechamiento, el tipo fotovoltaico, y el térmico. Los paneles fotovoltaicos proporcionan directamente energía eléctrica, pero tienen el inconveniente de su bajo rendimiento (entre ellO y el 15% de la energía recibida) así como su alto precio. Respecto a la energía térmica se puede dividir en dos grandes líneas, la energía termo solar, generada mediante centrales de concentración por espejos, de la radiación solar, generalmente de tipo parabólico, que calentando un fluido, se le hace pasar por una turbina para la generación de energía eléctrica. Tienen un rendimiento aceptable, aunque son muy caras y la producción es irregular y son difícilmente regulables. Existen en el mercado otras maquinas de concentración de pequeña potencia, completamente integradas (seguidor solar, espejos parabólicos y generador Stirling en el mismo elemento) muy bajo rendimiento, muy caras. Por ultimo refiriéndonos a la energía térmica, tenemos el aprovechamiento mediante los llamados paneles solares térmicos, los cuales se limitan al calentamiento directo por medio de la radiación solar de unas placas captadoras, llenas de fluido, normalmente agua glicolada, la cual suele alcanzar una temperatura de entre 60 y 90 o C. por lo cual, a esas temperaturas, solo permite su uso como energías de apoyo en calentamiento y en el mejor de los casos agua caliente sanitaria o suelo radiante. Por lo anterior, si centramos el análisis en los paneles solares, tanto térmicos como fotovoltaicos comprobamos que los rendimientos son muy bajos y los precios en muchos casos no competitivos así como las DEVICES FOR THE WARMING OF THERMAL FLUIDS, BY SOLAR ENERGY, THROUGH PLANTABLE SURFACES TYPE SOLAR PANELS, PROVIDED OF LENSES FOR THE CONCENTRATION OF RADIATION, TYPE CYLINDRICAL DIOPTRIOS, OF NON-PUTUAL FOCUS. The present invention relates to a new optical-mechanical device, which allows the heating of the heat transfer fluid to be used up to variable temperatures by means of a new system of thin, cylindrical and linear lenses. , configurable up to 350 o C and higher depending on the specific need, and at market prices similar to those of other technologies. It is clear that in today's society the growing energy needs and at the same time the awareness about the need for clean energies have given rise to a spectacular development of the so-called renewable energies. Currently and focusing on the renewable energy solar sector, there are basically two types of use, the photovoltaic type, and thermal. Photovoltaic panels directly provide electrical energy, but they have the disadvantage of their low performance (between 10% and 15% of the energy received) as well as their high price. Regarding thermal energy, the thermo solar energy, generated by mirrored concentration centers, of solar radiation, generally of parabolic type, which by heating a fluid, is passed through a turbine can be divided into two main lines. electric power generation They have an acceptable yield, although they are very expensive and the production is irregular and they are hardly adjustable. There are other small power concentration machines on the market, fully integrated (solar tracker, parabolic mirrors and Stirling generator in the same element) very low performance, very expensive. Finally, referring to thermal energy, we take advantage of the so-called thermal solar panels, which are limited to direct heating by means of solar radiation of collector plates, filled with fluid, usually glycol water, which usually reaches a temperature between 60 and 90 o C. Therefore, at these temperatures, it only allows its use as heating support energies and, in the best case, sanitary hot water or underfloor heating. Therefore, if we focus the analysis on solar panels, both thermal and photovoltaic, we verify that the yields are very low and the prices in many cases are not competitive as well as the

posibilidades de aplicación en los rangos de temperatura que funcionas son muy limitados. Si tenemos en cuenta que en los últimos tiempos están apareciendo en el mercado, fluidos orgánicos que permiten a temperaturas inferiores a 200 o C. usar estos, en turbinas de ciclo de Rankine, con rendimientos teóricos de casi el 45 %. Así mismo este rango de temperaturas de fluidos, permite el uso en el sector de HVAC. En concreto en climatización de edificios, están apareciendo maquinas de absorción (ejem. bromuro de litio) que tampoco precisan temperaturas superiores a los 2000 C. antes indicados para su funcionamiento. Surge por lo anterior, mejorando las temperaturas obtenidas en los paneles térmicos, la posibilidad de la obtención de electricidad mediante turbinas y la aplicación a sistemas de climatización por absorción. En lo que se refiere a forma y tamaño se mantendrán aproximadamente las dimensiones de los que actualmente se comercializan para poder usar herrajes y seguidores solares normalizados, necesarios para su funcionamiento. Application possibilities in the temperature ranges that you operate are very limited. If we take into account that in recent times organic fluids that allow temperatures below 200 o C. are appearing on the market, use these, in Rankine cycle turbines, with theoretical yields of almost 45%. Also this range of fluid temperatures, allows the use in the HVAC sector. In particular in building air conditioning, absorption machines (eg lithium bromide) are appearing that do not require temperatures above 2000 C. before indicated for operation. Due to the above, improving the temperatures obtained in the thermal panels, the possibility of obtaining electricity through turbines and the application to air conditioning systems by absorption. With regard to shape and size, approximately the dimensions of those currently marketed to be able to use standard solar hardware and followers, necessary for its operation, will be maintained.

BREVE DESCRIPCION DE PLANOS Dibujo hoja 6. Fig.O vista general del conjunto panel montado Dibujo hoja 7. Fig.l Tipo1 A: Dioptrio cilíndrico convergente, B: Camino óptico, C: Tubo captación. Fig.2 Tip02 A: Dioptrio cilíndrico convergente, B: Camino óptico, C: Tubo captación, D: Dioptrio divergente, E: Espejo plano BRIEF DESCRIPTION OF DRAWINGS Drawing sheet 6. Fig. O general view of the assembled panel assembly Drawing sheet 7. Fig.l Type1 A: Converging cylindrical diopter, B: Optical path, C: Collection tube. Fig. 2 Tip02 A: Converging cylindrical diopter, B: Optical path, C: Pickup tube, D: Divergent diopter, E: Flat mirror

Los captadores solares Fig.O están formados por un bastidor exterior a modo de contenedor cerrado, fabricado en aluminio anodizado, autoportante, con la suficiente rigidez para soportar los esfuerzos mecánicos debido a factores ambientales y climatológicos, así como los de los propios elementos que componen el sistema. Este bastidor solo es accesible por una de sus caras, la que se dirige al sol, esta provisto de 2 agujeros con pasamuros herméticos, los cuales permitirán la entrada y la salida del fluido caloportador. La superficie óptica, esta formada por un vidrio transparente exterior de protección cierre y aislamiento, el cual evita la entrada suciedad y garantiza la estanqueidad, debajo de este vidrio y en paralelo con el, se encuentran las lentes cilíndricas, de sección lenticular constante, que se montan transversalmente al panel y tiene por tanto una longitud aprox. de 1000 mm. de longitud,( A) en Fig.1, dispuestas en toda la superficie del mismo, por debajo de las mismas, en el caso mas sencillo (tipo 1), se encuentran los tubos del captador de calor (C) que contiene el fluido caloportador, situados justo en la línea que forma el foco lineal de la lente cilíndrica convergente, donde inciden los haces de rayos. Se monta un tubo, por lo general de cobre, por cada lente cilíndrica, estos se unen mediante un colector, a un pequeño depósito que permite Fig.O solar collectors are formed by an outer frame as a closed container, made of anodized aluminum, self-supporting, with sufficient rigidity to withstand mechanical stress due to environmental and climatic factors, as well as those of the elements that make up the system. This frame is only accessible by one of its faces, the one that goes to the sun, is provided with 2 holes with hermetic passages, which will allow the entry and exit of the heat transfer fluid. The optical surface, is formed by an outer transparent glass of closure and insulation protection, which prevents dirt entry and guarantees the tightness, under this glass and in parallel with it, are the cylindrical lenses, of constant lenticular section, which they are mounted transversely to the panel and therefore have a length approx. 1000 mm of length, (A) in Fig. 1, arranged on the entire surface thereof, below them, in the simplest case (type 1), are the heat collector tubes (C) that contains the fluid heat carrier, located just on the line that forms the linear focus of the converging cylindrical lens, where the beams of lightning strike. A tube, usually of copper, is mounted for each cylindrical lens, these are joined by a collector, to a small tank that allows

5 mediante válvula de 3 vías, la selección de fluido, como líquido o vapor. En el caso de necesitarse mayor temperatura del fluido Fig. 2 (tipo 2), estos haces de rayos, son guiados mediante otro juego de lente divergente (D), un espejo (E) y una nueva lente convergente (A), el principio de funcionamiento es el siguiente, Fig. 2, la primera lente, cilíndrica convergente, concentra la radiación incidente en su superficie del panel, en 5 via 3-way valve, the selection of fluid, such as liquid or steam. If a higher temperature of the fluid is needed Fig. 2 (type 2), these beam beams are guided by another set of divergent lens (D), a mirror (E) and a new convergent lens (A), the principle operating is as follows, Fig. 2, the first lens, cylindrical convergent, concentrates the incident radiation on its panel surface, in

10 otro área mas pequeña que es el área de incidencia en la segunda lente cilíndrica que es divergente, saliendo el haz paralelo al eje de esta lente. Mediante un espejo, se dirige el haz, con el ángulo adecuado a la zona de convergencia final, donde otra lente cilíndrica convergente, concentra la radiación, obteniéndose muy altas temperaturas en el tubo donde se focaliza la misma. Como en el caso anterior, los tubos captadores de calor, 10 another smaller area that is the area of incidence in the second cylindrical lens that is divergent, the beam leaving parallel to the axis of this lens. Through a mirror, the beam is directed, with the appropriate angle to the final convergence zone, where another converging cylindrical lens concentrates the radiation, obtaining very high temperatures in the tube where it is focused. As in the previous case, the heat collecting tubes,

15 siguen un recorrido similar hacia el depósito y la salida del fluido. La ultima capa, por debajo de las anteriores, esta compuesta por capas de aislamiento térmico que envuelve a los tubos y al pequeño deposito antes mencionado para fluido vapor o liquido. En la cara del vidrio, en los laterales y con el fin de facilitar el posicionamiento del dispositivo, se ha mecanizado adaptadores para fototransistores necesarios para el 15 follow a similar path to the reservoir and fluid outlet. The last layer, below the previous ones, is composed of layers of thermal insulation that surrounds the tubes and the small tank mentioned above for vapor or liquid fluid. On the face of the glass, on the sides and in order to facilitate the positioning of the device, adapters have been machined for phototransistors necessary for the

20 posicionamiento de los seguidores solares que necesitan este tipo de paneles de concentración. Tiene unas dimensiones de aprox. 2000x 1 000x200 mm. siendo la superficie de captación de unos 2 m2. 20 positioning of solar trackers that need this type of concentration panels. It has dimensions of approx. 2000x 1 000x200 mm. the collection area being about 2 m2.

Claims (1)

REIVINDICACIONES Se reivindica como de nueva y propia invención la propiedad y explotación Property and exploitation are claimed as new and own invention exclusiva de : 1) DISPOSITIVOS PARA EL CALENTAMIENTO DE FLUIDOS TERMICOS, POR ENERGIA SOLAR, MEDIANTE SUPERFICIES PLANAS TIPO PANELES SOLARES, PROVISTAS DE LENTES PARA LA CONCENTRACION DE LA RADIACION, TIPO DIOPTRIOS CILINDRICOS, DE FOCO LINEAL (NO PUTUAL), caracterizadas porque la radiación solar es concentrada y tratada como sigue por los captadores solares, que están formados por: A) Un bastidor exterior a modo de contenedor cerrado, fabricado en aluminio anodizado, autoportante, con la suficiente rigidez para soportar los esfuerzos mecánicos. Este bastidor solo es accesible por una de sus caras, la que se dirige al sol, esta provisto de 2 agujeros con pasamuros herméticos los cuales permitirán la entrada y la salida del fluido caloportador así como llave de selección del estado del fluido. B) La superficie óptica, esta formada por un vidrio transparente exterior de protección cierre y aislamiento, el cual evita la entrada suciedad y garantiza la estanqueidad, debajo de este vidrio y en paralelo con el, se encuentran las lentes cilíndricas, de sección lenticular constante, que se montan transversalmente al panel y tiene por tanto una longitud aprox. de 1000 mm. de longitud, dispuestas en toda la superficie del mismo. C) Por debajo de las mismas, en el caso mas sencillo, tipo 1, se encuentran los tubos del captador de calor que contiene el fluido caloportador, situados justo en la línea que forma el foco lineal de la lente cilíndrica convergente, donde inciden los haces de rayos. Se monta un tubo, por lo general de cobre, por cada lente cilíndrica, estos se unen mediante un colector, a un pequeño depósito que permite mediante válvula de 3 vías la selección de fluido, como líquido o vapor. D) En el caso de necesitarse mayor temperatura del fluido, tipo 2, estos haces de rayos, son guiados mediante otro juego de lentes divergentes, un espejo y una nueva lente convergente, el principio de funcionamiento es el siguiente, la primera lente cilíndrica convergente, concentra la radiación incidente en su superficie en otro área mas pequeña, que es el área de incidencia en la segunda lente cilíndrica que es divergente, saliendo el haz paralelo al eje de esta lente. exclusive of: 1) DEVICES FOR THE WARMING OF THERMAL FLUIDS, BY SOLAR ENERGY, THROUGH PLANTABLE SURFACES TYPE SOLAR PANELS, PROVIDED OF LENSES FOR THE CONCENTRATION OF RADIATION, TYPE OF CYLINDRICAL DIOPTRIOS, OF LINEAR FOCUS (NOT PUTUAL radiation), characterized by radiation Solar is concentrated and treated as follows by solar collectors, which are formed by: A) An outer frame as a closed container, made of anodized aluminum, self-supporting, with sufficient rigidity to withstand mechanical stress. This frame is only accessible by one of its faces, the one that goes to the sun, is provided with 2 holes with hermetic passages which will allow the entrance and exit of the heat transfer fluid as well as the key for selecting the state of the fluid. B) The optical surface, is formed by an outer transparent glass of protection closure and insulation, which prevents dirt entry and guarantees the tightness, under this glass and in parallel with it, are the cylindrical lenses, of constant lenticular section , which are mounted transversely to the panel and therefore have a length of approx. 1000 mm in length, arranged on the entire surface thereof. C) Below them, in the simplest case, type 1, are the heat collector tubes containing the heat transfer fluid, located just in the line that forms the linear focus of the converging cylindrical lens, where the beams of lightning A tube, usually of copper, is mounted for each cylindrical lens, these are joined by a manifold, to a small tank that allows the selection of fluid, such as liquid or steam, by means of a 3-way valve. D) If a higher temperature of the fluid, type 2, is needed, these beam beams are guided by another set of divergent lenses, a mirror and a new converging lens, the principle of operation is as follows, the first converging cylindrical lens , concentrates the incident radiation on its surface in another smaller area, which is the area of incidence in the second cylindrical lens that is divergent, leaving the beam parallel to the axis of this lens. E) Mediante un espejo, se dirige el haz, con el ángulo adecuado a la zona de convergencia final, donde otra lente cilíndrica convergente, concentra la radiación, obteniéndose muy altas temperaturas en el tubo captador donde se focaliza la misma. Como en el caso anterior, los tubos captadores de calor, E) Through a mirror, the beam is directed, with the appropriate angle to the final convergence zone, where another converging cylindrical lens concentrates the radiation, obtaining very high temperatures in the sensor tube where it is focused. As in the previous case, the heat collecting tubes, 5 siguen un recorrido similar hacia el depósito y la salida del fluido. 5 follow a similar path to the reservoir and fluid outlet. F) La ultima capa, por debajo de las anteriores, esta compuesta por capas de aislamiento ténnico que envuelve a los tubos y al pequeño deposito antes mencionado para fluido vapor o liquido. En la cara del vidrio, en los laterales y con el fin facilitar el posicionamiento del dispositivo respecto al sol, se ha F) The last layer, below the previous ones, is composed of layers of technical insulation that surrounds the tubes and the small tank mentioned above for vapor or liquid fluid. On the face of the glass, on the sides and in order to facilitate the positioning of the device with respect to the sun, it has been 10 mecanizado adaptadores para la instalación de fototransistores necesarios para el posicionamiento de los seguidores solares que necesitan este tipo de paneles de concentración. 10 machining adapters for the installation of phototransistors necessary for the positioning of solar trackers that need this type of concentration panels. G) Tiene unas dimensiones de aprox. 2000xl000x200 mm. siendo la superficie de captación de unos 2 m2. 15 G) It has dimensions of approx. 2000xl000x200 mm. the collection area being about 2 m2. fifteen
ES201001278A 2010-10-04 2010-10-04 Device for heating fluids by solar energy, using solar concentration panels Expired - Fee Related ES2388977B1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1673429A (en) * 1927-08-20 1928-06-12 Paul L Vinson Sun-ray heater
GB1172829A (en) * 1965-12-16 1969-12-03 Patrick Henry James Southby Improvements relating to Systems for Deriving Useful Energy from Solar Radiation.
FR2272404A1 (en) * 1974-05-22 1975-12-19 Dussud Paul Magnifier strip for collection of solar radiation - has rectangular body with transversely convex face for focusing along line
US3991741A (en) * 1975-03-20 1976-11-16 Northrup Jr Leonard L Roof-lens solar collector
FR2458769A1 (en) * 1979-06-12 1981-01-02 Giraud Alexandre Solar collector for electrical and mechanical energy - uses vaporised fluid passed through turbine and condenser coil
FR2680564A1 (en) * 1991-08-21 1993-02-26 Dussud Paul Orientable solar collector using air with straight magnifying strips and hot water accumulator
US5191875A (en) * 1991-09-27 1993-03-09 Edling Jack V High efficiency solar boiler
US20100116336A1 (en) * 2008-11-12 2010-05-13 Abengoa Solar New Technologies, S.A. Light Collection and Concentration System

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1673429A (en) * 1927-08-20 1928-06-12 Paul L Vinson Sun-ray heater
GB1172829A (en) * 1965-12-16 1969-12-03 Patrick Henry James Southby Improvements relating to Systems for Deriving Useful Energy from Solar Radiation.
FR2272404A1 (en) * 1974-05-22 1975-12-19 Dussud Paul Magnifier strip for collection of solar radiation - has rectangular body with transversely convex face for focusing along line
US3991741A (en) * 1975-03-20 1976-11-16 Northrup Jr Leonard L Roof-lens solar collector
FR2458769A1 (en) * 1979-06-12 1981-01-02 Giraud Alexandre Solar collector for electrical and mechanical energy - uses vaporised fluid passed through turbine and condenser coil
FR2680564A1 (en) * 1991-08-21 1993-02-26 Dussud Paul Orientable solar collector using air with straight magnifying strips and hot water accumulator
US5191875A (en) * 1991-09-27 1993-03-09 Edling Jack V High efficiency solar boiler
US20100116336A1 (en) * 2008-11-12 2010-05-13 Abengoa Solar New Technologies, S.A. Light Collection and Concentration System

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