JP2008121999A - Solar collector - Google Patents

Solar collector Download PDF

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Publication number
JP2008121999A
JP2008121999A JP2006307419A JP2006307419A JP2008121999A JP 2008121999 A JP2008121999 A JP 2008121999A JP 2006307419 A JP2006307419 A JP 2006307419A JP 2006307419 A JP2006307419 A JP 2006307419A JP 2008121999 A JP2008121999 A JP 2008121999A
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JP
Japan
Prior art keywords
heat
heat insulating
insulating material
wall
vacuum
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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.)
Withdrawn
Application number
JP2006307419A
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Japanese (ja)
Inventor
Katsuzo Konakawa
Seiichi Yasuki
Norio Yotsuya
誠一 安木
勝蔵 粉川
規夫 肆矢
Original Assignee
Matsushita Electric Ind Co Ltd
松下電器産業株式会社
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Application filed by Matsushita Electric Ind Co Ltd, 松下電器産業株式会社 filed Critical Matsushita Electric Ind Co Ltd
Priority to JP2006307419A priority Critical patent/JP2008121999A/en
Publication of JP2008121999A publication Critical patent/JP2008121999A/en
Application status is Withdrawn legal-status Critical

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • 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
    • F24S23/70Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/60Thermal insulation
    • 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
    • F24S23/70Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/87Reflectors layout
    • F24S2023/872Assemblies of spaced reflective elements on common support, e.g. Fresnel reflectors
    • 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

Abstract

An object of the present invention is to efficiently recover the amount of heat necessary to form a heat medium vapor using solar heat.
SOLUTION: A condensing part 1 for collecting sunlight and an exterior 17 for housing a heat exchanger 6, and an insulating wall provided in the exterior 17 so as to partition the exterior wall, the condensing part 1 and the heat exchanger 6. 19 and a heat insulating wall 19 and a housing chamber 20 constituted by an exterior wall are equipped with a vacuum heat insulating material 21, and the temperature increase of the vacuum heat insulating material 21 is blocked by the heat insulating wall 19, thereby preventing the deterioration of the vacuum heat insulating material 21, The heat radiation from the exterior 17 can be reduced over a long period of time, and the amount of heat for forming the vapor of the high-temperature heat medium 9 can be efficiently recovered.
[Selection] Figure 1

Description

  The present invention relates to a heat collector of a cogeneration system using solar heat.

Conventionally, this kind of heat collector has arrange | positioned the heat insulating material between the reflecting plate unit arrange | positioned in a hollow box-shaped casing, and the bottom wall of a casing, and a reflecting plate unit (for example, refer patent document 1). .
JP 2005-300138 A

  However, in the prior art, when a high temperature and heat quantity are obtained such that the heat medium is evaporated and the steam turbine is rotated in the cogeneration system, the heat dissipation loss from the casing increases, and the predetermined temperature and heat quantity are reduced. There was a problem that it could not be obtained.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to efficiently recover the amount of heat necessary for preventing heat radiation from a casing and forming steam of a heat medium.

  In order to solve the above-described conventional problems, a heat collector according to the present invention includes a heat collecting part that collects sunlight, a heat collecting opening that receives heat collected by the heat collecting part, and a heat collecting opening. A heat exchanger that recovers heat to a heat medium, an exterior housing the heat collection unit and the heat exchanger, and an insulation wall provided in the exterior so as to partition the exterior wall, the heat collection unit, and the heat exchanger And a vacuum heat insulating material is mounted on a storage chamber composed of the heat insulating wall and the exterior wall.

  As a result, even if the temperature in the exterior rises in order to obtain high-temperature heat medium vapor, the heat insulation wall prevents the vacuum insulation material from rising in the storage chamber, thus preventing the vacuum insulation material from deteriorating. It reduces heat dissipation from the exterior over a long period of time.

  The heat collector of the present invention uses a vacuum heat insulating material to prevent heat dissipation from the exterior, and efficiently recovers the amount of heat for forming a high-temperature heat medium vapor.

  The first invention includes a heat collecting part for collecting solar heat, a heat collecting opening for receiving heat collected by the heat collecting part, a heat exchanger for collecting heat from the heat collecting opening to a heat medium, An exterior housing the heat collecting section and the heat exchanger, and an exterior wall and a heat insulating wall provided so as to partition the heat collecting section and the heat exchanger are provided in the exterior, and the heat insulating wall and the exterior wall are configured. By installing a vacuum heat insulating material in the storage room, even if the temperature inside the exterior rises in order to obtain a high temperature heat medium vapor, the heat insulating wall prevents the temperature increase of the vacuum heat insulating material placed in the storage room. The deterioration of the vacuum heat insulating material can be prevented, and the heat radiation from the exterior can be reduced over a long period of time.

According to the second invention, in particular, the heat insulating wall of the first invention is provided with a heat collecting part and a heat exchanger that receives heat gathered at the heat collecting part by attaching a reflective material that reflects infrared rays toward the heat exchanger. Infrared light generated when the temperature of the exchanger rises is reflected by the reflective material of the heat insulation wall and used to reheat the heat exchanger, preventing the temperature rise of the heat insulation wall, and the vacuum insulation material placed in the storage room High temperature degradation can be prevented.

  According to the third aspect of the invention, in particular, the heat insulating wall of the first aspect provides a space between the heat collecting part and the heat exchanger so that infrared rays from the heat collecting part and the heat exchanger are directly insulated from the heat insulating wall. Therefore, the reflection performance is improved, so that the temperature rise of the vacuum heat insulating material can be prevented, and the high temperature deterioration of the vacuum heat insulating material can be prevented.

  In the fourth invention, in particular, the heat insulating wall of the first invention is equipped with a reflective material that reflects infrared rays toward the heat exchanger, and the heat exchanger absorbs infrared rays on the surface of the side wall facing the heat insulating wall. By installing the selective absorption film, the infrared rays generated from the heat exchanger are reflected by the reflective material of the heat insulation wall and absorbed by the selective absorption film, and the heat is used for reheating the heat exchanger, so vacuum insulation The temperature rise of the material can be prevented, and the high temperature deterioration of the vacuum heat insulating material can be prevented.

  In the fifth aspect of the invention, in particular, the heat insulating wall of the first aspect is provided with a selective absorption film that absorbs infrared rays on the surface of the side wall facing the vacuum heat insulating material, and reflects the infrared light on the surface of the vacuum heat insulating material. Since the infrared ray reflected by the reflective material of the vacuum insulation material is absorbed by the selective absorption film and the heat is returned to the heat exchanger side, the temperature rise of the vacuum insulation material is prevented, and the vacuum insulation material High temperature degradation can be prevented.

  In the sixth invention, in particular, the heat insulating wall of the first invention provides a space between the selective absorption film attached to the surface of the side wall facing the vacuum heat insulating material and the reflective material attached to the surface of the vacuum heat insulating material. As a result, the infrared rays from the heat insulating wall directly reach the reflective material of the vacuum heat insulating material, the reflection performance is improved, the heat is absorbed by the selective absorption film, the temperature of the vacuum heat insulating material is prevented from rising, and the vacuum High temperature deterioration of the heat insulating material can be prevented.

  In the seventh aspect of the invention, in particular, the heat insulating wall of the first aspect of the invention is such that a gas having a low thermal conductivity is injected into the space between the heat collecting part and the heat exchanger, so that the heat insulating wall is separated from the heat collecting part and the heat exchanger. Therefore, the temperature rise of the vacuum heat insulating material can be prevented, and the high temperature deterioration of the vacuum heat insulating material can be prevented.

  In the eighth invention, in particular, the heat insulating wall of any one of the first to seventh inventions is insulated by injecting a gas having a low thermal conductivity into the space provided between the reflective material of the vacuum heat insulating material. Since heat conduction from the wall to the vacuum heat insulating material is prevented, the temperature rise of the vacuum heat insulating material can be prevented and high temperature deterioration of the vacuum heat insulating material can be prevented.

  In particular, the ninth invention is equipped with a solar thermal cogeneration system in which the heat collector of any one of the first to eighth inventions is used for heating a heat medium, so that solar power can be used for power generation and hot water supply / heating. A system to perform can be realized.

(Embodiment 1)
1, 2, and 3, reference numeral 1 denotes a heat collecting unit that collects solar heat, a reflecting unit 2 that reflects and focuses solar heat, and a heat collecting unit that irradiates solar heat focused by the reflecting unit 2. It consists of an opening 3.

  The shape of the reflection part 2 uses a reflector of a compound parabolic concentrator (CPC) to focus solar heat. CPC optimizes the angle of solar heat incident and the heat collection ratio (open area of solar heat entering the heat collecting section 1 / open area of the heat collecting opening 3) according to the annual and daily sun movement (altitude and orientation). It is designed to a reasonable value.

For example, if the incident angle of solar heat is about 30 ° from the zenith, the heat collection ratio is about 3 times, and if the incident angle is narrowed to about 20 °, the heat collection ratio is enlarged about 7 times. As the heat collection ratio is increased, the solar heat is more focused, so the amount of heat irradiated at the heat collection opening 3 is increased and the temperature is increased.

  However, when the heat collection ratio is increased, the angle at which solar heat can be incident becomes narrower with respect to the zenith, so that there are many restrictions on the heat collection time, installation location, etc. in the heat collection section, which need to be considered. A plurality of heat collecting portions 1 can be provided, and the design dimensions at that time are similar. No matter how many fine heat collecting portions 1 are arranged, a constant heat collecting ratio and an incident angle are maintained.

  It is effective to make the CPC into a three-dimensional (3D) cup shape by optimizing the heat collection ratio and the incident angle. The reflection part 2 is finished in a mirror surface in order to improve the solar heat reflectance. The mirror finish of the reflection part 2 has methods, such as plating, vapor deposition, grinding | polishing, and coating, with the material which comprises the heat collecting part 1. FIG.

  Processing of the heat collecting part 1 includes methods such as molding a heat-resistant resin (for example, phenol resin, fluorine resin, polyimide resin, etc.), pressing stainless steel, and aluminum die casting. There is also a method of bending an aluminum mirror finish plate.

  For example, when the heat collecting part 1 is molded with a heat-resistant resin, the mirror surface is finished with aluminum plating (evaporation) or painting to form the reflecting part 2. In particular, when the mirror surface is plated with aluminum, polyimide resin, polyphenylene sulfide resin, polyester resin, polyamide resin, or the like is used. Further, when stainless steel is pressed, a mirror surface may be formed by aluminum electrolytic polishing or buffing.

  In addition, the aluminum die casting may be mirror-finished by plating or the like to prevent a reduction in reflectance due to an oxide film after polishing of the aluminum die casting material. The gaps 4 formed by the plurality of heat collecting portions 1 are filled with a heat insulating material 5 so that an air layer is not formed.

  The heat insulating material 5 is formed of a heat-resistant resin material (for example, phenol resin, fluororesin, etc.) or a ceramic material (silica, alumina, etc.). Further, when the plurality of heat collecting portions 1 are integrally molded with resin, the heat collecting portions 1 are filled with the resin material.

  Reference numeral 6 denotes a heat exchanger provided below the heat collecting section 1. A flat plate heat receiving plate 7 is provided on the heat collecting opening 3 side of the heat collecting section 1, and a passage plate 8 joined to the heat receiving plate 7 is provided below the heat collecting plate 7. It is composed.

  The heat receiving plate 7 and the passage plate 8 are formed of a copper plate or an aluminum plate having a high thermal conductivity, and the ends are sealed by a method such as welding, high temperature soldering, caulking material injection, caulking, etc. I try not to leak.

  The passage plate 8 presses a flat plate to provide irregularities, and the flat plate-shaped heat receiving plate 7 forms a heat medium passage 10. An inlet pipe 11 and an outlet pipe 12 of the heat medium 9 are communicated with the heat medium passage 10.

  The passage plate 8 is formed so that the shape of the unevenness is serpentine, and the integral heat medium passage 10 is routed along the heat receiving plate 7. The cross-sectional shape of the heat medium passage 10 is formed in a flat shape by reducing the gap between the heat receiving plate 7 and the passage plate 8, and heat exchange is performed so as to increase the area where the heat medium 9 and the inner wall of the heat receiving plate 7 are in contact with each other. Try to promote.

The heat medium 9 is an alternative chlorofluorocarbon (HFC).
arbon) 134A and carbon dioxide (CO2). A selective absorption film 13 for absorbing sunlight and preventing radiation of heat from the heat receiving plate 7 is attached to the surface of the heat receiving plate 7 on the side receiving the solar heat from the heat collecting opening 3.

  The selective absorption film 13 is plated with black black chrome or electroless nickel on the surface of the heat receiving plate 7. In addition, manganese-based black paint may be applied instead of plating.

  Components around the heat collecting opening 3 of the heat collecting portion 1 (for example, the edge portion of the heat collecting opening 3, the bottom portion when the heat collecting portion 1 is formed of resin, or the like around each heat collecting portion 1) A heat-resistant heat insulating sheet 14 is mounted between the heat collecting portion 1 and the heat receiving plate 7 so that the heat insulating material 5 or the like filled does not directly touch the heat receiving plate 7.

  The heat insulating sheet 14 is formed of a resin material (for example, phenol resin, fluororesin, etc.) or a ceramic material (silica, alumina, etc.), has an opening larger than the heat collection opening 3, and irradiates the surface of the heat receiving plate 7 with sunlight. Like to do.

  Reference numeral 15 denotes a transmission body provided at the upper portion of the heat collecting unit 1, which takes in solar heat and prevents rain and dust from entering the heat collecting unit 1. The transparent body 15 uses a transparent glass having a high transmittance in order to allow solar heat to pass through (the solar transmittance of such a transparent glass is about 90%).

  The heat collecting part is configured so that surrounding components of the upper opening part of the heat collecting part 1 (for example, the edge part of the opening or the upper part when the heat collecting part 1 is formed of resin or the like) do not touch the transmissive body 15. A heat-resistant endothermic sheet 16 is mounted between 1 and the transmissive body 15.

  The endothermic sheet 16 is a thin plate of copper or aluminum having a high thermal conductivity and is coated with a metal black or gray material equivalent to the selective absorption film 13 with little reflection, and the upper opening portion of the heat collecting section 1 to the transmission body 15 The reflection of solar heat from the surrounding components is prevented so that the heat stays below the transmissive body 15.

  Reference numeral 17 denotes a box-shaped exterior housing the heat collecting unit 1 and the heat exchanger 6 and provided with an opening for the transmission body 15 in the upper part.

  The exterior 17 is made of stainless steel with little corrosion or a weather resistant resin material (for example, polyester resin, polycarbonate resin, etc.). The interior of the exterior 17 is filled in the exterior 17 so as to cover the periphery of the plurality of heat collecting portions 1 and the heat exchanger 6 with the exterior heat insulating material 18.

  The exterior heat insulating material 18 is made of heat-resistant rock wool, glass wool, or the like.

  Reference numeral 19 denotes a heat insulating wall provided so as to partition the heat collecting section 1 and the heat exchanger 6 and the external wall in the exterior 17. The heat insulation wall 19 provides a storage room 20 as an independent room inside the exterior 17. Yes.

  The heat insulating wall 19 is made of a heat-resistant ceramic material (silica, alumina, etc.), a resin material (phenol resin, fluorine resin, etc.) or a metal having a low thermal conductivity (for example, stainless steel, etc.).

  Reference numeral 21 denotes a vacuum heat insulating material, which is inserted into the storage chamber 20 without a gap. The vacuum heat insulating material 21 is made of silica powder or glass wool as a core material and has improved heat insulating properties.

  Further, the jacket material of the vacuum heat insulating material 21 is formed of a plastic-metal laminate film.

  Further, the vacuum heat insulating material 21 covers two core materials facing each other, covers the core material, reduces the inside to a vacuum, and seals the periphery by heat welding. A laminate structure of the jacket material is a layer for heat welding from the inside (for example, composed of polyethylene naphthalate or a fluororesin film that can be welded at 200 ° C. or higher), and a layer for gas barrier (for example, a layer for heat welding). Consists of a metal foil with a higher melting point than the film used, or a film with metal or inorganic oxide vapor deposition. The metal foil is aluminum, nickel, tin stainless steel, etc. The resin film to be vapor deposited is polyethylene naphthalate, polyimide film Etc.), protective layer (for example, a film having a higher melting point than the film used in the heat-welding layer, polyethylene naphthalate, tetrafluoroethylene-ethylene copolymer, tetrafluoroethylene-par It consists of multiple layers of fluoroalkoxyethylene copolymer, etc., and is resistant to vacuum for long periods. It has improved the sex.

  Reference numeral 22 denotes a reflective material, which is attached without gaps along the heat insulating wall 19 toward the heat collecting section 1 and the heat exchanger 6 inside the heat insulating wall 19.

  The reflective material 22 reflects infrared rays from the heat collecting unit 1 and the heat exchanger 6 to return to the heat exchanger 6 and reheats. The reflective material 22 is a metal powder (for example, silver, aluminum, etc.), a carbide powder (for example, silicon nitride, silicon carbide, etc.) or a metal oxide (titanium oxide, tin oxide, antimony dove tin, etc.) of an infrared reflection component. The coating film is formed on the surface of the heat insulating wall 19 using a fluorine-based resin.

  The reflective material 22 may be mounted with a polished metal plate such as an aluminum mirror plate along the heat insulating wall 19.

  Reference numeral 23 denotes a heat collector that is configured by enclosing and housing the heat exchanger 6 integrally formed with the plurality of heat collecting portions 1 with an exterior heat insulating material 18 and opening the upper portion of the heat collecting portion 1 with a transmission body 15. It is.

  Reference numeral 24 denotes a circulation pump of the heat medium 9, 25 denotes a circuit through which the heat medium 9 flows, and 26 denotes a heat storage tank that stores high-temperature heat from the heat medium 9.

  About the heat collector comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the circulation pump 24 is operated to circulate the heat medium 9 in the circuit 25 and send it to the heat collector 23. In the heat collector 23, sunlight is converged while being reflected by the CPC reflecting portion 2 of the heat collecting portion 1, and is irradiated to the heat receiving plate 7 of the heat exchanger 6 from the heat collecting opening 3.

  About 90% of sunlight is absorbed by the heat receiving plate 7 by the selective absorption film 13 attached to the surface of the heat receiving plate 7, and the temperature of the heat exchanger 6 rises. When the heat medium 9 is sent to the heat medium passage 10 provided in the heat exchanger 6, the heat medium 9 receives heat from the heat receiving plate 7, and the heat medium 9 receives high-temperature steam (or liquid or a mixture of steam and liquid). It is formed and sent to the heat storage tank 26.

  The heat storage tank 26 receives this steam and accumulates an amount of heat of about 200 ° C. The steam of the heat medium 9 is condensed into a liquid in the heat storage tank 26 and is sent again to the heat collector 23 by the circulation pump 24 so as to be heated. This operation is repeated while solar heat can be supplied, so that the necessary amount of heat is maintained in the heat storage tank 26.

  At this time, when the temperature of the heat collecting unit 1 and the heat exchanger 6 rises, heat rays are emitted as infrared rays therefrom. Although the heat rays are blocked by the exterior heat insulating material 18, the temperature of the exterior heat insulating material 18 rises with time because the heat insulating material 18 is heated. From the heat collecting part 1 and the heat exchange 6, heat is transmitted to the exterior heat insulating material 18 also by heat conduction or convection.

  Since the heat exchanger 6 generates steam of about 200 ° C. of the heat medium 9, the heat spreads outward even by heat insulation by the fine air layer of the exterior heat insulating material 18 and reaches the heat insulation wall 19. Since the inside of the exterior 17 is partitioned by the heat insulating wall 19, heat is stored in the space inside the heat insulating wall 19, heat dissipation from the heat exchanger 6 is prevented, and heat exchange with the heat medium 9 is promoted. Yes.

  The storage chamber 20 provided outside the heat insulation wall 19 is shielded from heat by the heat insulation wall 19 to prevent the temperature inside the storage chamber 20 from rising. A vacuum heat insulating material 21 is inserted into the storage chamber 20 to prevent the temperature of the vacuum heat insulating material 21 from rising.

  The vacuum heat insulating material 21 is kept at a temperature within the operating temperature range (generally used in refrigerators and the like, the operating temperature range is about −40 ° C. to 100 ° C.) and has long-term heat insulating performance. Like to maintain.

  The vacuum heat insulating material 21 prevents heat radiation to the outside of the outer casing 17 of the heat collector 23, prevents a temperature drop of the heat exchanger 6, and efficiently exchanges heat with the heat medium 9.

  In addition, the reflective material attached toward the light collecting unit 1 and the heat exchanger 6 inside the heat insulating wall 19 reflects infrared rays emitted from the heat collecting unit 1, the heat exchanger 6, and the exterior heat insulating material 18, Since it returns to the exchanger 6 or the exterior heat insulating material 18 side, the temperature rise of the heat insulation wall 19 is prevented, and the temperature rise in the storage chamber 20 is further reduced.

  As described above, in the present embodiment, the exterior 17 that houses the heat collector 1 and the heat exchanger 6, and the exterior wall, the heat collector 1, and the heat exchanger 6 are provided in the exterior 17 so as to partition them. Since the vacuum heat insulating material 21 is attached to the heat insulating wall 19 and the storage chamber 20 constituted by the heat insulating wall 19 and the outer wall, even if the temperature in the outer case 17 rises to obtain the vapor of the high-temperature heat medium 9 The heat insulation wall 19 prevents the temperature rise of the vacuum heat insulating material 21 placed in the storage chamber 20, prevents the vacuum heat insulating material 21 from deteriorating, and can reduce heat radiation from the exterior 17 over a long period of time.

  Further, in the present embodiment, the vacuum heat insulating material 21 prevents heat radiation to the outside of the exterior 17 of the heat collector 23, so that the temperature of the heat exchanger 6 is prevented from being lowered and heat exchange to the heat medium 9 is performed. It is possible to improve the thermal efficiency of the heat collector 23 by performing it efficiently.

  Moreover, in this Embodiment, since the heat from the heat exchanger 6 is interrupted | blocked by the heat insulation wall 19, and the temperature in the storage chamber 20 is lowered | hung, it is used for the general (use for a refrigerator etc.) with low operating temperature. Vacuum insulation material) By using the vacuum insulation material 21, the cost can be reduced.

  Moreover, in this Embodiment, since the heat insulation wall 19 was equipped with the reflective material 22 which reflects infrared rays toward the condensing part 1 and the heat exchanger 6, the heat exchange which received the heat | fever gathered by the condensing part 1 was carried out. The infrared rays generated when the temperature of the vessel 6 rises is reflected by the reflective material 22 of the heat insulation wall 19 and used for reheating the heat exchanger 6 to prevent the temperature rise of the heat insulation wall 19 and placed in the storage chamber 20. High temperature deterioration of the vacuum heat insulating material 19 can be prevented.

Further, in the present embodiment, sunlight is collected by a plurality of heat collecting sections 1, irradiated to the flat heat receiving plate 7 of the heat exchanger 6 from the heat collecting opening 3, and integrated with the heat receiving plate 7 to heat. Since the passage plate 8 constituting the medium passage 10 is provided, the heat received by the entire heat receiving plate 7 is uniformly distributed to the heat medium 9 without drawing a tubular heat exchanger around the heat collecting opening 3 in a complicated shape. , And the heat dissipation area of the heat exchanger 6 can be reduced to improve the thermal efficiency of the heat collector 23.

  In the present embodiment, the heat collected in the plurality of heat collecting openings 3 is collected by the integrated heat receiving plate 7 and there is no need to draw a tubular heat exchanger. Therefore, the heat exchanger 6 can be made compact and the heat collector 23 can be downsized (configured thin).

  Moreover, in this Embodiment, since the heat exchanger 6 is comprised with the two board | plates, the heat receiving plate 7 and the channel | path plate 8, it can simplify and can reduce cost.

  Further, in the present embodiment, the heat exchanger 6 is formed by meandering the irregularities of the passage plate 8 to form the heat medium passage 10, so that the heat medium passage 10 in the heat exchanger 6 is connected to one communication line. It is possible to increase the temperature so that all the heat reaches the heat medium 9.

  Further, in the present embodiment, the heat receiving plate 7 has the selective absorption film 13 formed on the surface on the heat collecting section 1 side, so that reflection on the surface of the heat receiving plate 7 of the heat received from the light collecting opening 3 is prevented, The amount of heat absorbed by the heat receiving plate 7 can be increased to prevent infrared radiation when the temperature of the heat receiving plate 7 rises, the temperature of the heat receiving plate 7 can be increased, and heating of the heat medium 9 can be promoted.

  In the present embodiment, the cross-sectional shape of the heat medium passage 10 is formed in a flat shape with a small gap between the heat receiving plate 7 and the passage plate 8, and an area where the heat medium 9 and the inner wall of the heat receiving plate 7 are in contact with each other. Since it is made large, since the heat medium 9 spreads along the inner wall of the heat receiving plate 7, heat exchange can be promoted.

  Moreover, in this Embodiment, since the heat-resistant heat insulation sheet 14 is mounted between the heat collecting part 1 and the heat receiving plate 7, heat dissipation from heat conduction from the heat receiving plate 7 to the heat collecting part 1 is prevented, Thermal efficiency can be improved. Further, since heat conduction from the high-temperature heat receiving plate 7 to the heat collecting portion 1 is prevented, deformation of the heat collecting portion 1 (particularly when the heat collecting portion 1 is molded with a heat-resistant resin) or the mirror surface of the reflecting portion 2. Can be prevented over a long period of time.

  Further, in the present embodiment, since the heat-resistant endothermic sheet 16 is mounted between the heat collecting unit 1 and the transmissive body 15, it is reflected by the upper part of the heat collecting unit 1 and emitted from the transmissive body 15 to the outside. The thermal efficiency of the heat collector 23 can be improved by absorbing sunlight and retaining heat below the transmissive body 15.

  In the present embodiment, the inlet pipe 11 and the outlet pipe 12 of the heat exchanger 6 are coupled to the heat medium passage 10 from the passage plate 8 side, so that the heat medium 9 flows uniformly into the heat medium passage 10. Heat exchange can be promoted.

  Further, by changing the shape of the reflecting portion 2 of the present embodiment from a three-dimensional (3D) cup shape of CPC to a two-dimensional (2D) saddle shape, it is possible to cope with a change in azimuth of the daily movement of the sun. Therefore, the heat medium 9 can be heated for a long time. Further, since the reflecting portion 2 can be molded by bending an aluminum mirror plate or the like, the cost can be reduced.

  In addition, the shape of the reflecting portion 2 of the present embodiment is changed from a three-dimensional (3D) cup shape of CPC to a bowl shape of a parabolic concentrator (PC), thereby concentrating solar heat on the focal point. Thus, a large heat collection ratio can be obtained, so that high-temperature steam of the heat medium 9 can be easily formed, and high-temperature heat that is easy to use can be obtained.

  In addition, the allowable solar radiation angle disappears due to the PC, but by installing a tracking device (not shown: a device that operates the reflector 2 with a motor, gear, etc., and always faces the sun), the sun is more sunlit. Since light can be collected, the thermal efficiency of the heat collector 23 can be improved.

  In addition, by applying a selective transmission film that transmits sunlight and reflects infrared rays to the inner surface of the transmission body 15 of the present embodiment on the heat collecting portion 1 side, the infrared rays from the high heat receiving rate 7 are reflected. Infrared rays due to the temperature rise of the heat collecting unit 1 are also reflected, so that the heat of the infrared rays can remain in the heat collecting unit 1 and contribute to the heating of the heat receiving plate 7, thereby improving the thermal efficiency of the heat collector 23.

  The selectively permeable film is formed by forming a transparent conductive film (for example, tin-doped indium oxide (ITO), antimony-doped tin oxide (ATO)) into a thin film by sputtering or painting.

  Further, the transmissive body 15 of the present embodiment is made of a resin material (for example, polycarbonate, etc.) having selective permeability and excellent heat resistance and weather resistance, thereby reducing the weight and cost of the heat collector 23. It can be performed.

(Embodiment 2)
In FIG. 4, the heat insulating wall 19 is provided with a space 27 between the heat collector 1 and the heat exchanger 6 (or the exterior heat insulating material 18 covering the heat exchanger 6), and the heat collector 1 and the heat exchanger 6. Infrared radiation radiated from (or the exterior heat insulating material 18 covering the heat exchanger 6) is directly reflected by the reflective material 22 mounted on the inner surface of the heat insulating wall 19 to improve the reflection performance.

  Moreover, the heat exchanger 6 is equipped with a selective absorption film 28 on the surface of the heat insulating wall 19 side. The selective absorption film 28 is applied with a material (for example, copper, aluminum, stainless steel, etc.) of the heat exchanger 6 that is coated with a paint that absorbs infrared rays (for example, a manganese-based paint or a carbon black-based paint). Processing (for example, black chrome plating, electroless nickel plating, etc.) is performed, and after absorbing infrared rays, radiation is suppressed and heat is kept in the heat exchanger 6.

  The space 27 is filled with an inert gas (for example, krypton gas) having a thermal conductivity smaller than that of the air, and the heat collecting unit 1 and the heat exchanger 6 (or the exterior heat insulating material covering the heat exchanger 6). 18), the heat dissipated by heat conduction or convection is reduced to prevent the heat exchanger 6 from lowering in temperature.

  Moreover, by filling the inert gas, the high-temperature heat exchanger 6 is covered to enhance safety, prevent deterioration of the heat insulating wall 19 and the vacuum heat insulating material 21, and endure long-term use.

  About the heat collector comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the temperature of the heat collecting unit 1 or the heat exchanger 6 (or the exterior heat insulating material 18 covering the heat exchanger 6) rises, infrared rays are emitted. Infrared rays are reflected inside the outer heat insulating material 18 or absorbed by the outer heat insulating material 18 or a fine air layer, thereby raising the temperature of the outer heat insulating material 18 and emitting new infrared rays.

  At this time, the infrared rays radiated through the space 27 fly in various directions, but reach the reflecting material 22 linearly, and the reflection is also performed linearly, increasing the amount of reflection and blocking the radiant heat. By doing so, the temperature rise of the heat insulation wall 19 is prevented.

The infrared light reflected by the reflective material 22 reaches the selective absorption film 28 of the heat exchanger 6 while being repeatedly reflected in various directions. The selective absorption film 28 absorbs infrared rays and raises the temperature of the heat exchanger 6. Even if the temperature of the heat exchanger 6 becomes high, the heat is kept in the heat exchanger 6 by maintaining the heat exchanger 6 at a high temperature by the effect of reducing the radiant heat of the selective absorption film 28. .

  Further, since the space 27 is filled with an inert gas having a thermal conductivity smaller than that of air, heat conduction from the light collecting unit 1 and the heat exchanger 6 (or the exterior heat insulating material 18 covering the heat exchanger 6) Heat dissipation due to convection is prevented and heat is retained on the heat exchanger 6 side so that the heat exchanger 6 is maintained at a high temperature.

  As described above, in the present embodiment, the infrared rays from the heat collecting unit 1 and the heat exchanger 6 (or the exterior heat insulating material 18 covering the heat exchanger 6) directly reflected by the heat insulating wall 19 through the space 27. Since it reaches the material 22 and the reflection performance is improved, the temperature rise of the vacuum heat insulating material 21 can be prevented, and the high temperature deterioration of the vacuum heat insulating material 21 can be prevented.

  Moreover, in this Embodiment, since the heat exchanger 6 absorbs the infrared rays reflected by the reflective material 22 of the heat insulation wall 19 by the selective absorption film 28 and uses the heat for reheating the heat exchanger 6, The temperature rise of the vacuum heat insulating material 21 can be prevented, and the high temperature deterioration of the vacuum heat insulating material 21 can be prevented.

  Moreover, in this Embodiment, the heat insulation wall 19 heat-exchanges with the heat collection part 1 by inject | pouring the gas whose heat conductivity is smaller than air into the space 27 by the side of the heat collection part 1 and the heat exchanger 6. Since heat conduction from the vessel 6 to the heat insulating wall is prevented, the temperature rise of the vacuum heat insulating material 21 can be prevented, and the high temperature deterioration of the vacuum heat insulating material 21 can be prevented.

  Further, in the present embodiment, a reflective material 22 is attached to the heat exchanger 6 side of the heat insulating wall 19 to reduce infrared rays absorbed by the heat insulating wall 19, thereby reducing the temperature of the vacuum heat insulating material 21. An effect can also be obtained.

  In addition, the space 27 of the present embodiment strengthens the structure of the exterior 17 and the heat insulation wall 19 and keeps it in a sealed structure in a vacuum so that the heat collection unit 1 and the heat exchanger 6 (or the heat insulation 6 covering the heat exchanger 6) are covered. It is also possible to completely block the heat conduction from the material 18).

(Embodiment 3)
In FIG. 5, the heat insulating wall 19 is provided with a selective absorption film 29 that absorbs infrared light on the surface of the side wall facing the vacuum heat insulating material 21, and a reflective material 30 that reflects infrared light is mounted on the surface of the vacuum heat insulating material 21. ing.

  The selective absorption film 29 is made of a material for the heat insulating wall 19 (for example, a heat-resistant ceramic material (silica, alumina, etc.), a resin material (phenol resin, fluorine resin, etc.) or a metal having a low thermal conductivity (for example, stainless steel). ) Apply infrared paint (such as manganese paint or carbon black paint) or black plating treatment (eg black chrome plating, electroless nickel plating, etc.) to absorb infrared light. After that, radiation is suppressed and heat is held in the heat exchanger 6.

  The reflective material 30 is a metal powder (for example, silver, aluminum, etc.), a carbide powder (for example, silicon nitride, silicon carbide, etc.) or a metal oxide (titanium oxide, tin oxide, antimony dove tin oxide) of an infrared reflection component. And a coating film is formed on the surface of the vacuum heat insulating material 21 using a fluorine-based resin.

  The reflective material 22 may be mounted with a polished metal plate such as an aluminum mirror plate along the vacuum heat insulating material 21.

  The heat insulating wall 19 has a space 31 between the selective absorption film 29 attached to the surface of the side wall facing the vacuum heat insulating material 21 and the reflective material 30 attached to the surface of the vacuum heat insulating material 21.

  By this space 31, infrared rays from the heat insulating wall 19 directly reach the reflective material 30 of the vacuum heat insulating material 21 to improve the reflective performance and prevent the temperature of the vacuum heat insulating material 21 from rising. In addition, the space 29 is filled with an inert gas (for example, krypton gas) having a lower thermal conductivity than air to reduce the heat dissipated from the heat insulation wall 19 by heat conduction or convection. The temperature rise of 21 is prevented.

  About the heat exchanger comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the temperature of the heat collecting unit 1 or the heat exchanger 6 (or the exterior heat insulating material 18 covering the heat exchanger 6) rises, infrared rays are emitted. Infrared rays are reflected inside the outer heat insulating material 18 or absorbed by the outer heat insulating material 18 or a fine air layer, thereby raising the temperature of the outer heat insulating material 18 and emitting new infrared rays.

  When it reaches the heat insulation wall 19, the temperature of the heat insulation wall 19 rises, and infrared rays are radiated therefrom toward the vacuum heat insulating material 21. The infrared rays are reflected by the reflective material 30, returned to the heat insulating wall 19 side, absorbed by the selective absorption film 29, and the infrared rays radiated again to the vacuum heat insulating material 21 are prevented, so that the temperature of the vacuum heat insulating material 21 is maintained in the use range. Like to do.

  Further, infrared rays radiated from the heat insulating wall 19 through the space 31 linearly reach the reflecting material 30, and the reflection is also performed linearly, thereby increasing the amount of reflection and blocking the radiant heat, thereby reducing the vacuum. The temperature rise of the heat insulating material 21 is prevented.

  In addition, since the space 31 is filled with an inert gas having a thermal conductivity smaller than that of air, heat conduction from the heat insulation wall 19 and heat dissipation due to convection are prevented, and heat is retained on the heat insulation wall 19 side. The heat exchanger 6 is maintained at a high temperature.

  Moreover, by filling the inert gas, the high-temperature heat exchanger 6 is covered to enhance safety, prevent deterioration of the heat insulating wall 19 and the vacuum heat insulating material 21, and endure long-term use.

  As described above, in the present embodiment, the selective absorption film 29 that absorbs infrared rays is mounted on the surface of the heat insulating wall 19, and the reflective material 30 that reflects infrared rays is mounted on the surface of the vacuum heat insulating material 21. The infrared rays reflected by the material 30 are absorbed by the selective absorption film 29 and the heat is returned to the heat insulation wall 19 side, so that the temperature rise of the vacuum heat insulation material 21 can be prevented and the high temperature deterioration of the vacuum heat insulation material 21 can be prevented. it can.

  In the present embodiment, since the space 31 is provided between the selective absorption film 29 mounted on the surface of the heat insulating wall 19 and the reflective material 30 mounted on the surface of the vacuum heat insulating material 21, Infrared rays directly reach the reflective material 30 of the vacuum heat insulating material 21 to improve the reflection performance, absorb heat by the selective absorption film 29, and retain the heat on the heat insulating wall 19, thereby preventing the temperature of the vacuum heat insulating material from rising. Thus, the high temperature deterioration of the vacuum heat insulating material can be prevented.

  Moreover, in this Embodiment, the heat insulation wall 19 is vacuumed from the heat insulation wall 19 by inject | pouring the gas (for example, krypton gas) with small heat conductivity into the space 31 provided between the vacuum heat insulating materials 21. Since heat conduction to the heat insulating material 21 is prevented, the temperature rise of the vacuum heat insulating material 21 can be prevented, and the high temperature deterioration of the vacuum heat insulating material 21 can be prevented.

Further, in the present embodiment, a reflective material 22 is attached to the heat exchanger 6 side of the heat insulating wall 19 to reduce infrared rays absorbed by the heat insulating wall 19, thereby reducing the temperature of the vacuum heat insulating material 21. An effect can also be obtained.

  In addition, the space 31 of the present embodiment can strengthen the structure of the exterior 17 and the heat insulating wall 19, can be kept in a vacuum with a sealed structure, and can completely block heat conduction from the heat insulating wall 19.

(Embodiment 4)
In FIG. 6, reference numeral 23 denotes a heat collector that receives and collects solar heat, and a circuit 25 (closed circuit) provided with a circulation pump 24 is provided in the middle in order to transmit the heat of the heat collector 23 to the heat storage tank 26. ing.

  The heat medium 9 circulating in the circuit 25 is made of a liquid such as chlorofluorocarbon or water (the heat medium 9 may use supercritical CO2 or liquid air in some cases). The heat medium 9 is heated by the heat collector 23 to be converted into steam and sent to the heat storage tank 26, where it is condensed and becomes liquid by exchanging heat there.

  The heat medium 9 is sent again to the heat collector 23 by the circulation pump 24. By repeating this operation, heat is stored in the heat storage tank 26. The heat storage tank 26 uses a latent heat type using a phase change of a molten salt having a high melting point, a sensible heat type using a molten salt, oil, or the like, or a steam accumulator that stores steam in the form of pressure water or the like. I try to store high temperature heat.

  32 is a supply pump for supplying the steam of the heat medium 33 formed by using the heat of the heat storage tank 26 to the steam turbine 34, and a circuit 35 (again for sending the heat medium 33 discharged from the steam turbine 34 to the heat storage tank 26. (Closed circuit).

  The heat medium 33 circulating in the circuit 35 is composed of a liquid such as chlorofluorocarbon or water and its vapor (the heat medium 33 may use supercritical CO2 or liquid air in some cases). In addition, a hot water storage tank 36 is provided in the middle of the steam turbine 34 and the supply pump 32 of the circuit 35, and hot water is stored in the hot water storage tank 36 using the heat of high-temperature steam after the kinetic energy is given to the steam turbine 34.

  The heat medium 33 condenses into a liquid when transferring heat to the hot water storage tank 36, and is sent to the heat storage tank 26 again to be heated to form the vapor of the heat medium 33. By repeating this operation, hot water is stored in the hot water storage tank 36 while power is generated by the generator 37 provided in the steam turbine 34. The hot water stored in the hot water storage tank 36 is supplied by a water supply pump 38 for hot water supply or heating.

  In this way, a solar thermal Rankine system 39 that rotates the steam turbine 34 using the heat recovered by the heat collector 23 is configured, and the cogeneration system 40 is combined with a circuit for performing hot water supply and heating. To make up.

  About the cogeneration system carrying the solar thermal Rankine system comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, in order to form the steam of the heat medium 33 supplied to the steam turbine 34, the circulation pump 24 is operated, the heat medium 9 is circulated in the circuit 25, and is heated by the heat collector 23 that receives the heat of the sun. Then, high-temperature steam (or a liquid or a mixture of steam and liquid) is formed and sent to the heat storage tank 26.

The heat storage tank 26 receives this steam and accumulates an amount of heat of about 200 ° C. The steam of the heat medium 9 is condensed into a liquid in the heat storage tank 26 and is sent again to the heat collector 23 by the circulation pump 24 so as to be heated. This operation is repeated while solar heat can be supplied, so that the necessary amount of heat is maintained in the heat storage tank 26.

  When a predetermined amount of heat is accumulated in the heat storage tank 26, the supply medium 32 provided in the circuit 35 circulates the heat medium 33 to form the steam of the heat medium 33 at about 200 ° C. in the heat storage tank 26. Supply. The generator 37 is rotated by the kinetic energy of the steam to generate power.

  The steam of the heat medium 33 discharged from the steam turbine 34 is sent to the hot water storage tank 36 to exchange heat with water, and the heat is stored in the hot water storage tank 36 as hot water. The steam of the heat medium 33 condenses in the hot water storage tank 36, becomes a liquid, is sent to the heat storage tank 26 by the supply pump 32, and is heated again to form steam.

  By repeating this operation, hot water is stored in the hot water storage tank 36 while generating power with the steam turbine 34, the water supply pump 38 is operated when hot water supply or heating is necessary, and the hot water is used to constitute the cogeneration system 40. I am doing so.

  As described above, in the present embodiment, the heat insulating wall 19 provided so as to partition the exterior wall, the light collector 1 and the heat exchanger 6 in the exterior 17, and the storage chamber 20 constituted by the exterior wall are provided with a vacuum heat insulating material. Since the heat insulating wall 19 prevents the temperature of the vacuum heat insulating material 21 from rising, the deterioration of the vacuum heat insulating material 21 can be prevented, and the heat radiation from the exterior 17 can be reduced over a long period of time. The thermal efficiency of 41 can be improved.

  Moreover, since the heat from the heat exchanger 6 is cut off by the heat insulation wall 19 and the temperature in the storage chamber 20 is lowered, a general (vacuum heat insulating material used for a refrigerator or the like) with a low operating temperature is insulated by vacuum. The cost of the cogeneration system 40 can be reduced by using the material 21.

  Further, since the heat received by the entire heat receiving plate 7 of the heat collector 23 is uniformly transmitted to the heat medium 9, the heat radiation area of the heat exchanger 6 is reduced and the heat efficiency of the heat collector 23 is improved. It is possible to supply the heat storage tank 26 with high-temperature heat necessary for forming the steam of the heat medium 33 necessary for the rotation of the heat storage tank 33.

  Since the heat collected in the plurality of heat collecting openings 3 is collected by the integrated heat receiving plate 7 and there is no need to route the tubular heat exchanger, the heat exchanger 6 is not affected by the size or arrangement of the light collecting section 1. Is made compact and the heat collector 23 is miniaturized (thinly configured), the cogeneration system 34 can be miniaturized and easy to install.

  In addition, an independent circuit 21 for collecting heat can be configured so that solar heat obtained by the heat collector 23 can be always stored and maintained in the heat storage tank 26 regardless of the operation of the steam turbine 34. In addition, the steam of the heat medium 33 required by the steam turbine 34 can be taken out at any time.

  Moreover, since the solar heat obtained by the heat collector 23 can be stored and maintained in the heat storage tank 26 regardless of the operation of the steam turbine 34, the heat collection temperature when the solar radiation for one year is strong (for example, around the summer solstice). When the power generation is not performed or the power generation is suppressed to be small when the temperature rises, the heat storage tank 26 absorbs an excessive amount of heat of the steam of the heat medium 9, so that an abnormal temperature rise of the heat collector 23 can be prevented.

  Moreover, since the hot water storage tank 36 is provided in the middle of the circuit 35, the heat of the heat storage tank 26 can be stored in the hot water storage tank 36 as hot water regardless of the power generation, so that hot water necessary for hot water supply and heating can be taken out at any time. .

  Moreover, since the steam of the heat medium 33 is formed using solar heat, and the steam turbine 34 is rotated to generate electric power, a cogeneration system 40 for power generation, hot water supply and heating can be realized, and natural energy called solar heat is utilized. Thus, it is possible to obtain effective means for energy saving promotion and CO2 reduction.

(Embodiment 5)
In FIG. 7, the steam of the heat medium 9 formed by the heat collector 23 is directly sent from the circulation pump 24 to the steam turbine 34 by the circuit 25 (closed circuit), and the steam turbine 34 is rotated to generate power by the generator 37. Further, a hot water storage tank 36 is provided in the middle of the steam turbine 35 and the circulation pump 24 in the circuit 25, and hot water is stored in the hot water storage tank 36 using the heat of high-temperature steam after giving kinetic energy to the steam turbine 34. I am doing so.

  About the heat exchanger comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The heat medium 9 condenses into a liquid when it transfers heat to the hot water storage tank 36 and is sent again to the heat collector 23 to be heated and form steam. By repeating this operation, hot water is stored in the hot water storage tank 36 while power is generated by the generator 37 provided in the steam turbine 34. The hot water stored in the hot water storage tank 36 is supplied for hot water supply by a water supply pump 38.

  As described above, in this embodiment, since the cogeneration system 40 is simplified, the cost of the system can be reduced.

  Moreover, since the solar heat obtained by the heat collector 23 is always stored as hot water in the hot water storage tank 36 regardless of the operation of the steam turbine 34, the heat collection temperature when the solar radiation for one year is strong (for example, around the summer solstice). When power generation is not performed or the power generation is suppressed to a low level when the temperature rises, the excessive amount of heat of the steam of the heat medium 9 is absorbed by the hot water storage tank 37, so that an abnormal temperature rise of the heat collector 23 can be prevented.

(Embodiment 6)
In FIG. 8, the steam of the heat medium 9 formed by the heat collector 23 is directly sent from the circulation pump 24 to the steam turbine 34 by the circuit 25 (closed circuit), and the steam turbine 34 is rotated so that only the power generation is performed by the generator 37. I am doing so. The generated electricity is charged in the battery 41. The battery 41 includes a lead battery, a nickel metal hydride battery, a lithium ion battery, a capacitor, and the like.

  About the heat exchanger comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The steam of the heat medium 9 condenses into a liquid after transmitting kinetic energy to the steam turbine 34 and is sent again to the heat collector 23 to be heated to form steam. By repeating this operation, power is generated by the generator 37 provided in the steam turbine 34.

  The electricity generated by the generator 37 is charged in the battery 41 so that a stable output can be obtained even if the heat collection temperature of the heat collector 23 fluctuates due to the weather.

  As described above, in the present embodiment, a simplified system of the heat collector 23, the circulation pump 24, and the steam turbine 35 is configured, so that the installation is easy and the cost can be reduced.

Moreover, since the generated electricity is stored in the battery 41, when the solar radiation for one year is strong (for example,
Even if the amount of power generation increases around the summer solstice, it can be absorbed by the battery 41 and the operation of the heat collector 23 and the steam turbine 34 can be continued to improve usability.

  As described above, the heat collector according to the present invention can prevent heat radiation from the exterior, recover heat from sunlight with low energy density, and perform efficient heat exchange to heat the heat medium 9. It can be applied to a heating device for hot water supply or power generation.

Front sectional view of heat collector in Embodiment 1 of the present invention Side sectional view of the collector Cross section of the collector Front sectional view of the heat collector in the second embodiment of the present invention Front sectional view of the heat collector in Embodiment 3 of the present invention The block diagram of the cogeneration system carrying the solar thermal Rankine system in Embodiment 4 of this invention The block diagram of the cogeneration system carrying the solar thermal Rankine system in Embodiment 5 of this invention The block diagram of the solar thermal Rankine system in Embodiment 6 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat collection part 2 Reflection part 3 Heat collection opening 6 Heat exchanger 9 Heat medium 10 Heat medium passage 15 Transmission body 17 Exterior 19 Heat insulation wall 20 Storage room 21 Vacuum heat insulation material 22 Reflective material 23 Heat collector

Claims (9)

  1. A heat collecting part for collecting solar heat, a heat collecting opening for receiving heat collected by the heat collecting part, a heat exchanger for recovering heat from the heat collecting opening to a heat medium, and heat exchange with the light collecting part And a heat insulating wall provided so as to partition the outer wall of the outer shell, the heat collecting part, and the heat exchanger, and a vacuum heat insulating material is provided in a storage chamber constituted by the heat insulating wall and the outer wall. A collector equipped with
  2. The heat collector according to claim 1, wherein the heat insulating wall is provided with a reflective material that reflects infrared rays toward the heat collecting portion and the heat exchanger.
  3. The heat collector according to claim 1, wherein the heat insulating wall is provided with a space between the heat collector and the heat exchanger.
  4. The collection according to claim 1, wherein the heat insulating wall is provided with a reflective material that reflects infrared rays toward the heat exchanger, and the heat exchanger is provided with a selective absorption film that absorbs heat rays on a surface of the side wall facing the heat insulating wall. Heater.
  5. The heat collector according to claim 1, wherein the heat insulating wall is provided with a selective absorption film that absorbs infrared rays on a surface of a side wall facing the vacuum heat insulating material, and a reflective material that reflects infrared rays is attached to the surface of the vacuum heat insulating material.
  6. The heat collector according to claim 1, wherein the heat insulating wall has a space between the selective absorption film attached to the surface of the side wall facing the vacuum heat insulating material and the reflective material attached to the surface of the vacuum heat insulating material.
  7. The heat collector according to claim 1, wherein the heat insulating wall is a gas having a small thermal conductivity injected into a space between the heat collecting portion and the heat exchanger side.
  8. The heat collector according to claim 1, wherein the heat insulating wall is a gas having a low thermal conductivity injected into a space provided between the reflective material of the vacuum heat insulating material.
  9. A solar heat cogeneration system using the heat collector according to any one of claims 1 to 6 for heating a heat medium.
JP2006307419A 2006-11-14 2006-11-14 Solar collector Withdrawn JP2008121999A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010281251A (en) * 2009-06-04 2010-12-16 Mitaka Koki Co Ltd Solar light concentrating steam power generator
JP2011145053A (en) * 2010-01-15 2011-07-28 Dalian Sievert Testing Equipment Co Ltd Heat collecting module of metal-glass set heat collecting pipe and connection method
JP2011216325A (en) * 2010-03-31 2011-10-27 Sumitomo Electric Ind Ltd Induction heating device and power generation system equipped with it
JP2012237534A (en) * 2011-05-13 2012-12-06 Hitachi Appliances Inc Sunlight heat utilized steam absorption chiller and sunlight heat utilization system
JP2013029252A (en) * 2011-07-28 2013-02-07 Toshiba Corp Solar heat collector, and solar thermal power generation system
WO2013165014A1 (en) * 2012-05-01 2013-11-07 デクセリアルズ株式会社 Heat-absorbing material and process for producing same
JP2014088868A (en) * 2012-10-29 2014-05-15 Gyoseiin Genshino Iinkai Kakuno Kenkyusho Multifunctional solar energy cogeneration system
ES2475992A1 (en) * 2013-01-11 2014-07-11 Ingesol Canarias S.L.N.E. Inter-accumulator system for obtaining hot water by means of a heat exchanger

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010281251A (en) * 2009-06-04 2010-12-16 Mitaka Koki Co Ltd Solar light concentrating steam power generator
JP2011145053A (en) * 2010-01-15 2011-07-28 Dalian Sievert Testing Equipment Co Ltd Heat collecting module of metal-glass set heat collecting pipe and connection method
JP2011216325A (en) * 2010-03-31 2011-10-27 Sumitomo Electric Ind Ltd Induction heating device and power generation system equipped with it
JP2012237534A (en) * 2011-05-13 2012-12-06 Hitachi Appliances Inc Sunlight heat utilized steam absorption chiller and sunlight heat utilization system
US9068740B2 (en) 2011-05-13 2015-06-30 Hitachi, Ltd. Sunlight heat utilized steam absorption chiller and sunlight heat utilization system
JP2013029252A (en) * 2011-07-28 2013-02-07 Toshiba Corp Solar heat collector, and solar thermal power generation system
WO2013165014A1 (en) * 2012-05-01 2013-11-07 デクセリアルズ株式会社 Heat-absorbing material and process for producing same
JP2013250045A (en) * 2012-05-01 2013-12-12 Dexerials Corp Heat absorbing material and method of manufacturing the same
US9746206B2 (en) 2012-05-01 2017-08-29 Dexerials Corporation Heat-absorbing material and process for producing same
JP2014088868A (en) * 2012-10-29 2014-05-15 Gyoseiin Genshino Iinkai Kakuno Kenkyusho Multifunctional solar energy cogeneration system
ES2475992A1 (en) * 2013-01-11 2014-07-11 Ingesol Canarias S.L.N.E. Inter-accumulator system for obtaining hot water by means of a heat exchanger

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