ES2538926B1 - Solar and environmental thermal collector - Google Patents

Solar and environmental thermal collector Download PDF

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Publication number
ES2538926B1
ES2538926B1 ES201301201A ES201301201A ES2538926B1 ES 2538926 B1 ES2538926 B1 ES 2538926B1 ES 201301201 A ES201301201 A ES 201301201A ES 201301201 A ES201301201 A ES 201301201A ES 2538926 B1 ES2538926 B1 ES 2538926B1
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heat
solar
environment
thermal
fluid
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ES2538926A1 (en
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Antonio Díaz González
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    • 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

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  • Engineering & Computer Science (AREA)
  • Photovoltaic Devices (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)

Abstract

Captador térmico solar y ambiental.#La presente invención se refiere a un sistema de captación de energía solar térmica caracterizado porque las superficies captadoras expuestas a la radiación solar se mantienen a temperatura inferior a la del ambiente mediante el contacto térmico con un circuito por el que se hace pasar un fluido con temperatura inferior a la ambiental. Esto evitará las habituales pérdidas de calor, y las convertirá en ganancias, ya que, con este diseño, el calor fluirá del ambiente al conjunto de superficies y conductos que constituyen la instalación de captación de energía solar de forma natural.#Para incrementar este efecto, las superficies captadoras se dotarán de agujeros y huecos de cualquier forma, así como de protuberancias de cualquier diseño, con la intención de incrementar la superficie de intercambio térmico con el ambiente, aumentando así la energía tomada de éste.Solar and environmental thermal collector. # The present invention relates to a solar thermal energy collection system characterized in that the collector surfaces exposed to solar radiation are kept at a temperature lower than that of the environment by thermal contact with a circuit through which a fluid with a temperature lower than the ambient temperature is passed. This will avoid the usual losses of heat, and will turn them into profits, since, with this design, the heat will flow from the environment to the set of surfaces and conduits that constitute the installation of solar energy capture naturally. # To increase this effect , the capturing surfaces will be provided with holes and holes of any shape, as well as protuberances of any design, with the intention of increasing the surface of thermal exchange with the environment, thus increasing the energy taken from it.

Description

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DESCRIPCIONDESCRIPTION

Captador termico solar y ambiental.Solar and environmental thermal collector.

La presente invention se refiere a un captador de energla solar caracterizado por estar formado por unas superficies destinadas a ser expuestas al sol que disponen de huecos o agujeros de distintas formas, bien sean redondeados, ranurados o cualquier otra forma, asl como protuberancias en forma de aletas, laminas o cualquier otro diseno, todo ello con el objeto de aumentar la superficie de contacto con el exterior para asegurar una alta transmision de calor con el ambiente. Al mismo tiempo, estas superficies estan en contacto a traves de medios de elevada capacidad de transmision de calor con unos conductos por los que circula un fluido que tiene una temperatura inferior a la temperatura ambiente.The present invention relates to a solar energy collector characterized by being formed by surfaces intended to be exposed to the sun that have holes or holes of different shapes, whether rounded, grooved or any other shape, as well as protrusions in the form of fins, sheets or any other design, all in order to increase the surface of contact with the outside to ensure high heat transmission with the environment. At the same time, these surfaces are in contact through means of high heat transfer capacity with conduits through which a fluid circulating that has a temperature below room temperature circulates.

El objeto de este diseno es que las superficies expuestas al sol se mantengan a una temperatura inferior a la del ambiente, que en condiciones normales sera el aire, aunque tambien podra ser el agua o, en su caso, la nieve, incluso enterradas en esta. De este modo, tendran capacidad para captar la radiation solar, y tambien parte del calor latente del aire, del agua o incluso de la nieve.The purpose of this design is that the surfaces exposed to the sun are kept at a lower temperature than that of the environment, which in normal conditions will be the air, although it could also be water or, where appropriate, snow, even buried in this . In this way, they will have the capacity to capture solar radiation, and also part of the latent heat of the air, water or even snow.

Las superficies captadoras se mantendran en contacto, por medios de elevada transmisividad de calor, con unos conductos por los que se hara pasar un fluido previamente enfriado por debajo de la temperatura ambiente, asegurando asl que las citadas superficies tambien tengan una temperatura inferior a la ambiental. De este modo fluira el calor de forma natural desde el medio exterior hacia las superficies captadoras, y de estas, al circuito por el que circula el citado fluido enfriado por debajo de la temperatura ambiente.The collector surfaces will be kept in contact, by means of high heat transmissivity, with conduits through which a previously cooled fluid will be passed below room temperature, thus ensuring that said surfaces also have a lower temperature than the ambient . In this way the heat will flow naturally from the outside environment to the picking surfaces, and from these, to the circuit through which the said cooled fluid circulates below the ambient temperature.

El resultado sera que el fluido que se inyecto enfriado en el circuito, tras pasar por este, ha tomado el calor que han captado las superficies, tanto el proveniente de la radiacion solar como el que se capto del medio exterior gracias al contacto entre este y las superficies captadoras.The result will be that the fluid that was injected cooled in the circuit, after passing through it, has taken the heat that the surfaces have captured, both that coming from the solar radiation and the one that was captured from the outside environment thanks to the contact between it and the picking surfaces.

El sector de la tecnica en el que tiene su aplicacion la presente invencion es el de las instalaciones de captation de energla solar termica. En ellas se emplean diversos medios para evitar la perdida del calor que captan las superficies expuestas al sol, y tambien del contenido en el fluido portador al que las superficies citadas transfieren todo o parte de el. Por el contrario, el diseno objeto de la presente invencion supone que, tanto las superficies captadoras como los circuitos por los se conduce el fluido portador de calor, tienen una temperatura inferior a la del ambiente en el que se ubican. Como consecuencia, el calor fluira del ambiente hacia las superficies y los conductos, y no en sentido contrario, de modo, en vez de perder calor, aumentaran la cantidad de energla calorlfica captada.The sector of the technique in which the present invention has its application is that of thermal solar energy captation facilities. In them, various means are used to avoid the loss of heat captured by the surfaces exposed to the sun, and also of the content in the carrier fluid to which the aforementioned surfaces transfer all or part of it. On the contrary, the design object of the present invention assumes that, both the capture surfaces and the circuits through which the heat-carrying fluid is conducted, have a lower temperature than the environment in which they are located. As a consequence, heat will flow from the environment to the surfaces and ducts, and not in the opposite direction, so instead of losing heat, they will increase the amount of heat energy captured.

Ademas, el diseno propuesto, en el que las superficies destinadas a recibir la radiacion solar disponen de huecos o agujeros de distintas formas, facilitara el intercambio de calor entre las superficies y el ambiente, aumentando asl esta transmision termica. Por ello, el diseno propuesto supone un incremento en la captacion de energla, al unir a la radiacion solar la transmision termica a traves del contacto de las superficies captadoras con el ambiente.In addition, the proposed design, in which the surfaces intended to receive solar radiation have holes or holes of different shapes, will facilitate the exchange of heat between the surfaces and the environment, thereby increasing this thermal transmission. Therefore, the proposed design means an increase in energy collection, by joining the solar radiation thermal transmission through the contact of the collector surfaces with the environment.

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Se consigue asl cambiar de perdida a ganancia la transferencia de calor con el ambiente de superficies captadoras y fluido portador.It is thus possible to change the transfer of heat from loss to gain with the environment of collector surfaces and carrier fluid.

Antecedentes de la invencionBackground of the invention

Los sistemas de captacion de energla solar termica se vienen fundamentando, generalmente, en el empleo de captadores con un diseno que podrlamos describir como unas camaras o cajas destinadas a funcionar como pequenos invernaderos. Para ello disponen de una superficie acristalada por la que penetran los rayos solares, y en su interior se disponen los medios para que esa radiacion se convierta en calor, elevando asl la temperatura de la camara. A traves de unos conductos se hace circular un fluido, con el objeto de que ese calor pase de la camara al fluido. A partir de aqul, hay sistemas en los que este fluido es el que se empleara finalmente para el aprovechamiento de ese calor, aunque lo mas frecuente es transferir el calor del fluido al sistema final de aprovechamiento, que normalmente seran instalaciones de agua caliente sanitaria o de calefaccion.Solar thermal energy collection systems are generally based on the use of collectors with a design that we could describe as cameras or boxes designed to function as small greenhouses. For this purpose, they have a glazed surface through which the sun's rays penetrate, and inside they have the means for that radiation to become heat, thus raising the temperature of the chamber. Through a duct a fluid is circulated, so that this heat passes from the chamber to the fluid. From here, there are systems in which this fluid is the one that will finally be used for the use of that heat, although the most frequent is to transfer the heat of the fluid to the final system of use, which will normally be sanitary hot water installations or heating.

Para que el calor fluya de forma natural de la camara caliente al fluido es necesario que se alcance en ella una temperatura superior a la del fluido. Al mismo tiempo, para que el calor pase de forma natural de este fluido al sistema final de aprovechamiento, se necesita tambien que el fluido tenga una temperatura superior a la del citado sistema final de aprovechamiento. Esto supone que se debe establecer una escala de temperaturas decrecientes desde las camaras citadas, pasando por el fluido portador, hasta el sistema final de aprovechamiento. En funcion de la temperatura que se necesite en este ultimo, las temperaturas en los anteriores seran cada vez mayores.In order for the heat to flow naturally from the hot chamber to the fluid, it is necessary that a temperature above that of the fluid is reached. At the same time, for the heat to pass naturally from this fluid to the final system of use, it is also necessary that the fluid has a temperature higher than that of said final system of use. This means that a scale of decreasing temperatures must be established from the aforementioned chambers, through the carrier fluid, to the final use system. Depending on the temperature needed in the latter, the temperatures in the former will be increasing.

Por la misma razon, el calor fluira de la camara y de los conductos por los que circula el fluido a todo espacio que tenga una temperatura inferior, y en particular al exterior, lo que dara lugar a perdidas de calor y una merma de la energla calorlfica aprovechada. Por supuesto, se lucha contra esta perdida natural mediante sistemas de aislamiento termico, tanto de las camaras de captacion como de los circuitos por los que se transporta el fluido portador, bien sea este el destino final de ese calor, bien se utilice para transmitirlo al sistema final de aprovechamiento.For the same reason, heat will flow from the chamber and ducts through which the fluid circulates to any space that has a lower temperature, and in particular to the outside, which will lead to heat loss and a decrease in energy heat exploited. Of course, this natural loss is fought through thermal insulation systems, both of the capture chambers and the circuits through which the carrier fluid is transported, whether this is the final destination of that heat, or used to transmit it to the final harvesting system.

Descripcion de la invencionDescription of the invention

El diseno propuesto en la presente solicitud supone partir de un fluido notablemente mas frlo que el ambiente, caracterlstica que mantendra incluso despues de haberse calentado al contacto con las superficies expuestas a la radiacion solar. Ademas, este fluido se pondra en contacto, a traves de medios de elevada transmisividad termica, con las superficies captadoras, de tal modo que las mantendra tambien a temperatura inferior a la ambiental. Esto supone que las propias superficies captaran, ademas de la radiacion solar, el calor del ambiente.The design proposed in the present application involves starting from a fluid that is noticeably cooler than the environment, a characteristic that it will maintain even after it has been heated upon contact with the surfaces exposed to solar radiation. In addition, this fluid will be brought into contact, through means of high thermal transmissivity, with the picking surfaces, so that it will also keep them at a lower temperature than the ambient temperature. This means that the surfaces themselves will capture, in addition to solar radiation, the heat of the environment.

El objeto del diseno recogido en esta solicitud de patente, tendente a captar, al mismo tiempo que la energla solar, el calor latente ambiental, se puede mejorar dotando a las superficies captadoras de huecos y protuberancias, para aumentar la superficie de contacto con el ambiente y asl incrementar tanto como sea posible ese intercambio termico, y captar del ambiente una mayor cantidad de energla. De este modo, no solo no se pierde, sino que se gana calor en las superficies captadoras y circuitos portadores.The purpose of the design included in this patent application, which tends to capture, at the same time as solar energy, the environmental latent heat, can be improved by providing the surfaces for gaps and protrusions to increase the surface of contact with the environment and thus increase as much as possible that thermal exchange, and capture from the environment a greater amount of energy. In this way, not only is not lost, but heat is gained on the pickup surfaces and carrier circuits.

Claims (2)

ES 2 538 926 A1ES 2 538 926 A1 REIVINDICACIONES 1. Sistema de captacion de energla solar termica caracterizado porque las superficies captadoras expuestas a la radiacion solar se mantienen a temperatura inferior a la1. Thermal solar energy collection system characterized in that the collector surfaces exposed to solar radiation are kept at a lower temperature than 5 temperatura ambiental mediante el contacto termico con un fluido que tiene temperatura inferior a la ambiental.5 ambient temperature through thermal contact with a fluid that has a temperature below ambient. 2. Sistema de captacion de energla solar termica segun la reivindicacion 1, caracterizado por disponer las superficies captadoras de huecos o agujeros de distintas2. Thermal solar energy collection system according to claim 1, characterized by arranging the surfaces to capture holes or holes of different 10 formas, as! como protuberancias de cualquier diseno, todo ello con el objeto de aumentar la superficie de contacto con el ambiente.10 ways, ace! as protuberances of any design, all in order to increase the contact surface with the environment.
ES201301201A 2013-12-24 2013-12-24 Solar and environmental thermal collector Active ES2538926B1 (en)

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ES201301201A ES2538926B1 (en) 2013-12-24 2013-12-24 Solar and environmental thermal collector

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ES201301201A ES2538926B1 (en) 2013-12-24 2013-12-24 Solar and environmental thermal collector

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ES2538926B1 true ES2538926B1 (en) 2016-04-14

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000273B (en) * 1977-03-15 1982-01-06 Pritchard D Improvements in or relating to solar panels
GB2081861A (en) * 1980-08-14 1982-02-24 Hummel Steven L Solar heating system
JPS60108640A (en) * 1983-11-16 1985-06-14 Matsushita Electric Ind Co Ltd Solar heat collector
JPS60175963A (en) * 1984-02-23 1985-09-10 Mitsubishi Electric Corp Solar heat collector
CN101706159B (en) * 2009-11-10 2012-06-13 广东工业大学 Solar energy/ air energy double-resource integrated heat collector
CN102393080B (en) * 2011-11-14 2013-01-16 王斌 Blade-type solar energy-air energy collector

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