WO2011114861A1 - Miroir de concentration solaire, et dispositif de génération d'électricité thermique solaire à gorge et dispositif de génération d'électricité solaire à gorge le comprenant - Google Patents

Miroir de concentration solaire, et dispositif de génération d'électricité thermique solaire à gorge et dispositif de génération d'électricité solaire à gorge le comprenant Download PDF

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Publication number
WO2011114861A1
WO2011114861A1 PCT/JP2011/054297 JP2011054297W WO2011114861A1 WO 2011114861 A1 WO2011114861 A1 WO 2011114861A1 JP 2011054297 W JP2011054297 W JP 2011054297W WO 2011114861 A1 WO2011114861 A1 WO 2011114861A1
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Prior art keywords
solar
mirror
collecting mirror
solar light
film
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PCT/JP2011/054297
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English (en)
Japanese (ja)
Inventor
村上　修二
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コニカミノルタオプト株式会社
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Priority to JP2012505591A priority Critical patent/JPWO2011114861A1/ja
Publication of WO2011114861A1 publication Critical patent/WO2011114861A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • G02B19/0023—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors) at least one surface having optical power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
    • G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the present invention relates to a solar light collecting mirror, a trough solar power generator and a trough solar power generator provided with the mirror. More specifically, the present invention relates to a sunlight collecting mirror for a trough-type sunlight collecting device that receives reflected light while collecting reflected sunlight at a specific position.
  • Natural energy such as coal energy, biomass energy, nuclear energy, wind energy, and solar energy is currently being considered as alternative energy to replace fossil fuel energy such as oil and natural gas.
  • fossil fuel energy such as oil and natural gas.
  • the most stable and abundant amount of natural energy is considered to be solar energy.
  • the problem that the energy density of solar energy is low has been proposed to be solved by collecting solar energy with a huge reflecting device.
  • sunlight is collected by the reflecting device to generate power.
  • various types of devices have been developed for devices such as solar power generation devices and solar power generation devices that are used as energy sources for heat generation and the like. Such a device has a high degree of attention as a clean device having little influence on the environment.
  • a glass mirror As a reflection device, a glass mirror has been conventionally used because it is exposed to ultraviolet rays, heat, wind and rain, sandstorms, etc. due to solar heat. Glass mirrors are highly durable against the environment, but they are damaged during transportation or heavy, so there is a problem that the construction cost of the plant is increased because of the strength of the mount on which the mirrors are installed. In order to solve this problem, it is considered to replace the glass mirror with a resin reflective film (sheet) (see, for example, Patent Document 1).
  • sheet resin reflective film
  • the inner surface side of a casing having a parabolic cross-sectional shape is used as a light reflecting mirror for collecting sunlight (simply referred to as “reflecting mirror” or “reflecting mirror”).
  • a parabolic trough type reflection / condensing device in which a condenser tube or a heat collecting tube is disposed in the longitudinal direction of the focal portion (see, for example, Patent Document 2).
  • a resin film (sheet) is used as a light reflecting film mirror for collecting sunlight (hereinafter referred to as “sunlight collecting mirror”, “light reflecting film mirror”, “film”).
  • sunlight hereinafter referred to as “sunlight collecting mirror”, “light reflecting film mirror”, “film”.
  • mirror or “reflecting mirror”
  • air pollutants, sand, mud, dust, etc. adhere to the resin reflecting mirror as compared with a glass mirror. There is a problem that the reflectance deteriorates.
  • the degree of contamination that is, the degree of decrease in reflectance and regular reflectance may vary from part to part in a direction perpendicular to the longitudinal direction (curved surface direction).
  • the water droplets flow downward from above.
  • the dirt adhering to the surface is also caused to flow to the center of the reflecting mirror, thereby causing a problem that the dirt is concentrated on the center of the reflecting mirror.
  • the reflection mirror is continuous to the inner surface side of the casing having the parabolic cross section perpendicular to the longitudinal direction (in the curved surface direction). Because it is attached, that is, it is vertically attached, it is necessary to replace the reflecting mirror according to the dirt or deterioration part in the center (bottom part), and the part that has not deteriorated so much It was also inefficient because it was replaced together.
  • the present invention has been made in view of the above-described problems and situations, and the solution is to have high antifouling properties, easy partial replacement, and can maintain high reflectivity at low cost. It is to provide a solar light collecting mirror. Moreover, it is providing the trough type solar thermal power generation apparatus and solar power generation apparatus which provided the said mirror for sunlight condensing.
  • a long sunlight collecting mirror whose cross section parallel to the longitudinal direction is linear and whose cross section perpendicular to the longitudinal direction is macroscopically curved, and the length of the solar collecting mirror is long.
  • a solar light collecting mirror comprising a plurality of discontinuous long film mirrors divided in a direction perpendicular to the direction.
  • each of the plurality of long film mirrors has a lower end of the upper long mirror positioned outside the upper end of the lower long film mirror.
  • Each of the plurality of elongate film mirrors is attached so as to be replaceable on a support, and the sunlight condensing unit according to any one of the first to third aspects. For mirror.
  • Each of the plurality of long film mirrors is bonded to a support, and the solar light collecting mirror according to any one of the first to fourth items.
  • the long film mirror is characterized in that at least an adhesive layer, a metal reflection layer, and a protective layer are provided on the light source side of the metal reflection layer as a constituent layer on a resin substrate.
  • Item 6 The solar light collecting mirror according to any one of items 1 to 5.
  • a curved solar collecting mirror that collects light in a straight line, a solar light receiving / heating portion arranged so as to be parallel to the longitudinal direction of the solar collecting mirror,
  • a trough solar thermal power generation apparatus including a thermoelectric conversion unit that converts thermal energy transmitted from a heat transfer unit into electrical energy, wherein the solar light collecting mirror includes the first to sixth items.
  • a trough solar thermal power generation apparatus comprising the solar light collecting mirror according to any one of the above.
  • a curved sunlight collecting mirror that collects light in a straight line, and a photoelectric conversion unit that is arranged so as to be parallel to the longitudinal direction of the sunlight collecting mirror and that converts photothermal energy into electrical energy
  • a solar light collecting mirror according to any one of items 1 to 6 as the solar light collecting mirror.
  • a trough-type solar power generation device characterized in that
  • a solar light collecting mirror that has high antifouling properties, is easy to be partially replaced, and can maintain the light reflectance at low cost.
  • a trough solar thermal power generation device and a solar power generation device including the solar light collecting mirror can be provided.
  • the groove by horizontally sticking the light reflecting film mirror, the groove can be moved sideways, and dirty water can be released to the outside.
  • only the dirty light reflection film mirror in the lower center portion can be replaced, and can be efficiently installed by sticking it sideways.
  • FIG. 1 Perspective view of a conventional solar light collecting mirror equipped with a solar light receiving and heat transfer section
  • the solar light collecting mirror of the present invention is a long solar light collecting mirror whose cross section parallel to the longitudinal direction is linear and whose cross section perpendicular to the longitudinal direction is macroscopically curved.
  • the solar light collecting mirror is constituted by a plurality of discontinuous long film mirrors that are divided in a direction perpendicular to the longitudinal direction of the solar light collecting mirror. This feature is a technical feature common to the inventions according to claims 1 to 8.
  • the cross section perpendicular to the longitudinal direction is macroscopically substantially parabolic.
  • Each of the plurality of long film mirrors is adjacent to each other, and the lower end of the upper long mirror is outside the upper end of the lower long film mirror. It is preferable that they are positioned so as to be stepped.
  • each of the plurality of long film mirrors is mounted on the support so that it can be replaced.
  • each of the plurality of long film mirrors is bonded onto the support.
  • the long film mirror according to the present invention is a film mirror in an aspect in which a protective layer is provided on the resin substrate on at least an adhesive layer, a metal reflective layer, and the metal reflective layer as a constituent layer. Preferably there is.
  • the solar light collecting mirror of the present invention is a curved surface solar light collecting mirror that collects light in a straight line, and the sun disposed so as to be parallel to the longitudinal direction of the solar light collecting mirror.
  • the present invention can be suitably used for a trough solar power generation apparatus including a light receiving / heat transfer unit and a thermoelectric conversion unit that converts thermal energy transmitted from the solar light receiving / heat transfer unit into electric energy.
  • the solar light collecting mirror of the present invention is arranged so as to be parallel to the longitudinal direction of the solar light collecting mirror having a curved surface shape for collecting light in a straight line and the solar light collecting mirror. Moreover, it can use suitably for the trough type
  • formula solar power generation device which comprised the photoelectric conversion part which converts photothermal energy into electrical energy.
  • ⁇ is used to mean that the numerical values described before and after it are included as a lower limit value and an upper limit value.
  • FIG. 1 is a perspective view of a mirror for collecting sunlight of a conventional reflecting / condensing device.
  • FIG. 2 is a diagram showing a cross section parallel to the longitudinal direction of a conventional solar light collecting mirror and a cross section perpendicular to the longitudinal direction. As shown in these figures, in the conventional solar light collecting mirror, the reflecting mirror is perpendicular to the longitudinal direction (in the curved surface direction) on the inner surface side of the casing having a parabolic cross section. ) Installed continuously.
  • FIG. 3 is a perspective view of an example of the solar light collecting mirror of the present invention
  • FIG. 4 is a view showing a cross section parallel to the longitudinal direction and a cross section perpendicular to the longitudinal direction of the solar light collecting mirror. is there.
  • the solar light collecting mirror of the present invention has a long section in which a cross section parallel to the longitudinal direction is linear and a cross section perpendicular to the longitudinal direction is macroscopically curved.
  • the solar light collecting mirror is formed of a plurality of discontinuous long film mirrors that are divided in a direction perpendicular to the longitudinal direction of the solar light collecting mirror. .
  • the cross section perpendicular to the longitudinal direction is a macroscopic curved surface
  • the solar light collecting mirror is constituted by a plurality of elongated mirrors in the direction perpendicular to the longitudinal direction. If there is a discontinuous portion when viewed microscopically in a cross section perpendicular to the longitudinal direction, the surface becomes a curved surface shape assuming that the discontinuous portion is connected so as to maintain the curved surface shape.
  • the shape of the cross section perpendicular to the longitudinal direction of the curved surface is preferably a substantially parabolic shape, and this case is expressed as “macroscopically a substantially parabolic shape”.
  • substantially parabolic means that a parabolic shape in which 70% or more of the light incident on the condensing mirror having the parabolic cross section is condensed on the solar light receiving / heat transfer section is assumed.
  • Each condensing mirror does not necessarily have to have a curved surface shape, and may be a flat plate, as long as the whole including discontinuous portions is macroscopically arranged along the curved surface shape.
  • each of the plurality of long film mirrors is the long mirror on the upper side among the long film mirrors adjacent to each other. It is preferable that the lower end of the film is positioned outside the upper end of the lower long film mirror and is provided with a step. That is, an aspect in which the end of the cross section of each long film mirror is arranged to be stepped from the end of the cross section of the adjacent long film mirror is also preferable. According to such a configuration, the dirt on the surface of the outer long film mirror does not flow down on the adjacent long mirror and is discharged to the outside. It becomes possible to raise.
  • each of the plurality of long film mirrors is mounted on the support so as to be replaced. In this case, it is preferable that each of the plurality of long film mirrors is bonded onto the support.
  • the solar light collecting mirror of the present invention has the form shown in FIGS. 3 to 5, the antifouling property is high, and therefore, the deterioration of reflectance and regular reflectance is prevented, and Replacement is easy and the cost can be reduced. That is, in this invention, a groove
  • the film mirror constituting the solar light collecting mirror of the present invention it is preferable to use a film mirror described later. Further, it is preferable to adjust the length, width, thickness and the like of the long film mirror according to the use conditions.
  • the long film mirror according to the present invention is a film mirror in an aspect in which a protective layer is provided on the resin substrate on at least an adhesive layer, a metal reflective layer, and the metal reflective layer as a constituent layer. Preferably there is.
  • a metal corrosion prevention layer and other various functional layers may be provided depending on the purpose.
  • resin base material As the resin base material according to the present invention, various publicly known resin films can be used.
  • acrylate films such as polyethylene tere
  • the thickness of the resin base material is preferably an appropriate thickness depending on the type and purpose of the resin. For example, it is generally in the range of 10 to 300 ⁇ m. The thickness is preferably 20 to 200 ⁇ m, more preferably 30 to 100 ⁇ m.
  • the adhesive layer according to the present invention is not particularly limited as long as it has a function of improving the adhesion between the metal reflective layer and the resin base material (resin film), but is preferably made of a resin. Therefore, the adhesive layer has an adhesive property for closely adhering the resin base material (resin film) and the metal reflective layer, heat resistance that can withstand heat when the metal reflective layer is formed by a vacuum deposition method, and the metal reflective layer. Smoothness is required to bring out the high reflection performance inherent in
  • the resin used as the binder for the adhesive layer is not particularly limited as long as it satisfies the above conditions of adhesion, heat resistance, and smoothness, and polyester resin, acrylate resin, melamine resin, epoxy Resin, polyamide resin, vinyl chloride resin, vinyl chloride vinyl acetate copolymer resin, etc. can be used singly or as a mixed resin. From the point of weather resistance, acrylate resin, polyester resin and melamine resin are mixed. A resin is preferable, and a thermosetting resin in which a curing agent such as isocyanate is further mixed is more preferable.
  • an acrylate tree it is particularly preferable to use an acrylate tree.
  • Specific examples include polyacrylates and polymethacrylates such as poly (methyl methacrylate) (“PMMA”).
  • the thickness of the adhesive layer is preferably from 0.01 to 3 ⁇ m, more preferably from 0.1 to 1 ⁇ m, from the viewpoints of adhesion, smoothness, reflectance of the reflecting material, and the like.
  • a method for forming the adhesive layer conventionally known coating methods such as a gravure coating method, a reverse coating method, and a die coating method can be used.
  • the metal reflective layer according to the present invention is a layer made of a metal or the like having a function of reflecting sunlight.
  • the surface reflectance of the metal reflective layer is preferably 80% or more, more preferably 90% or more.
  • the metal reflective layer is preferably formed of a material containing any element selected from the element group consisting of Al, Ag, Cr, Cu, Ni, Ti, Mg, Rh, Pt, and Au.
  • Al or Ag is a main component from the viewpoint of reflectivity and corrosion resistance, and two or more such metal thin films may be formed.
  • a silver reflective layer mainly composed of silver it is particularly preferable to use.
  • a layer made of a metal oxide such as SiO 2 and TiO 2 may be provided in this order on the metal reflective layer to further improve the reflectance.
  • a metal reflection layer for example, a silver reflection layer
  • a wet method or a dry method can be used as a method for forming a metal reflection layer according to the present invention.
  • the wet method is a general term for a plating method, and is a method of forming a film by depositing a metal from a solution. Specific examples include silver mirror reaction.
  • the dry method is a general term for a vacuum film-forming method.
  • Specific examples include a resistance heating vacuum deposition method, an electron beam heating vacuum deposition method, an ion plating method, and an ion beam assisted vacuum deposition method.
  • sputtering method a vapor deposition method capable of a roll-to-roll method for continuously forming a film is preferably used in the present invention. That is, it is preferable that it is a manufacturing method of the aspect which has the process of forming the said metal reflection layer (silver reflection layer) by metal (silver) vapor deposition as a manufacturing method of the film mirror for sunlight condensing based on this invention.
  • the thickness of the metal (silver) reflective layer is preferably 10 to 200 nm, more preferably 30 to 150 nm from the viewpoint of reflectivity and the like.
  • the metal (silver) reflective layer may be on the light incident side or on the opposite side with respect to the support.
  • the metal corrosion prevention layer is provided adjacent to the metal reflection layer, contains a corrosion inhibitor, prevents corrosion of the metal of the metal reflection layer, and contributes to prevention of scratches on the metal reflection layer. is there.
  • the resin used as the binder for the metal corrosion prevention layer can be a polyester resin, an acrylic resin, a melamine resin, an epoxy resin, or a mixture of these resins. From the viewpoint of weather resistance, a polyester resin, An acrylic resin is preferable, and a thermosetting resin mixed with a curing agent such as isocyanate is more preferable.
  • isocyanate various conventionally used isocyanates such as TDI (tolylene diisocyanate), XDI (xylene diisocyanate), MDI (methylene diisocyanate), and HMDI (hexamethylene diisocyanate) can be used. From the viewpoint of properties, XDI, MDI, and HMDI isocyanates are preferably used.
  • the thickness of the metal corrosion prevention layer is preferably from 0.01 to 3 ⁇ m, more preferably from 0.1 to 1 ⁇ m, from the viewpoints of adhesion, weather resistance and the like.
  • a conventionally known coating method such as a gravure coating method, a reverse coating method, or a die coating method can be used.
  • the corrosion inhibitor for the metal reflective layer used in the solar light collecting film mirror according to the present invention is roughly classified into a corrosion inhibitor and an antioxidant having an adsorbing group for a metal.
  • corrosion refers to a phenomenon in which metal (silver) is chemically or electrochemically eroded or deteriorated by the environmental material surrounding it (see JIS Z0103-2004).
  • the adhesive layer may contain an antioxidant, and the upper adjacent layer may contain a corrosion inhibitor having an adsorbing group for a metal. preferable.
  • the optimum content of the corrosion inhibitor varies depending on the compound used, but generally it is preferably in the range of 0.1 to 1.0 g / m 2 .
  • Corrosion inhibitors having an adsorptive group for metals include amines and derivatives thereof, compounds having a pyrrole ring, compounds having a triazole ring, compounds having a pyrazole ring, compounds having a thiazole ring, compounds having an imidazole ring, indazole Desirably, the compound is selected from a compound having a ring, copper chelate compounds, thioureas, a compound having a mercapto group, at least one naphthalene-based compound, or a mixture thereof.
  • amines and derivatives thereof include ethylamine, laurylamine, tri-n-butylamine, O-toluidine, diphenylamine, ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, monoethanolamine, diethanolamine, triethanolamine, 2N- Dimethylethanolamine, 2-amino-2-methyl-1,3-propanediol, acetamide, acrylamide, benzamide, p-ethoxychrysoidine, dicyclohexylammonium nitrite, dicyclohexylammonium salicylate, monoethanolamine benzoate, dicyclohexylammonium benzoate, diisopropyl Ammonium benzoate, diisopropylammonium nitrite Cyclohexylamine carbamate, nitronaphthalene nitrite, cyclohexylamine benzoate, dicyclohexylammonium
  • Examples of compounds having a pyrrole ring include N-butyl-2,5-dimethylpyrrole, N-phenyl-2,5-dimethylpyrrole, N-phenyl-3-formyl-2,5-dimethylpyrrole, and N-phenyl-3. , 4-diformyl-2,5-dimethylpyrrole, etc., or a mixture thereof.
  • Examples of the compound having a triazole ring include 1,2,3-triazole, 1,2,4-triazole, 3-mercapto-1,2,4-triazole, 3-hydroxy-1,2,4-triazole, 3- Methyl-1,2,4-triazole, 1-methyl-1,2,4-triazole, 1-methyl-3-mercapto-1,2,4-triazole, 4-methyl-1,2,3-triazole, Benzotriazole, tolyltriazole, 1-hydroxybenzotriazole, 4,5,6,7-tetrahydrotriazole, 3-amino-1,2,4-triazole, 3-amino-5-methyl-1,2,4- Triazole, carboxybenzotriazole, 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy) -5'-tert-butylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'-di-tert-butylphenyl) benzotriazole
  • Examples of the compound having a pyrazole ring include pyrazole, pyrazoline, pyrazolone, pyrazolidine, pyrazolidone, 3,5-dimethylpyrazole, 3-methyl-5-hydroxypyrazole, 4-aminopyrazole, and a mixture thereof.
  • Examples of the compound having a thiazole ring include thiazole, thiazoline, thiazolone, thiazolidine, thiazolidone, isothiazole, benzothiazole, 2-N, N-diethylthiobenzothiazole, P-dimethylaminobenzallodanine, 2-mercaptobenzothiazole, etc. Or a mixture thereof.
  • Compounds having an imidazole ring include imidazole, histidine, 2-heptadecylimidazole, 2-methylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2-undecylimidazole, 1-benzyl-2-methyl.
  • Imidazole 2-phenyl-4-methylimidazole, 1-cyanoethyl-2-methylimidazole, 1-cyanoethyl-2-phenylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-undecyl Imidazole, 2-phenyl-4-methyl-5-hydromethylimidazole, 2-phenyl-4,5-dihydroxymethylimidazole, 4-formylimidazole, 2-methyl-4-formylimidazole, 2-phenyl-4 Formylimidazole, 4-methyl-5-formylimidazole, 2-ethyl-4-methyl-5-formylimidazole, 2-phenyl-4-methyl-4-formylimidazole, 2-mercaptobenzimidazole, etc., or These mixtures are mentioned.
  • Examples of the compound having an indazole ring include 4-chloroindazole, 4-nitroindazole, 5-nitroindazole, 4-chloro-5-nitroindazole, and a mixture thereof.
  • copper chelate compounds include acetylacetone copper, ethylenediamine copper, phthalocyanine copper, ethylenediaminetetraacetate copper, hydroxyquinoline copper, and the like, or a mixture thereof.
  • thioureas examples include thiourea, guanylthiourea, and the like, or a mixture thereof.
  • mercaptoacetic acid thiophenol, 1,2-ethanediol, 3-mercapto-1,2,4-triazole, 1-methyl-3-mercapto
  • naphthalene-based compounds examples include thionalide.
  • An antioxidant can also be used as the corrosion inhibitor for the metal reflective layer used in the solar light collecting film mirror according to the present invention.
  • the antioxidant it is preferable to use a phenol-based antioxidant, a thiol-based antioxidant, and a phosphite-based antioxidant.
  • phenolic antioxidants examples include 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, 2,2′-methylenebis (4-ethyl-6-t- Butylphenol), tetrakis- [methylene-3- (3 ', 5'-di-t-butyl-4'-hydroxyphenyl) propionate] methane, 2,6-di-t-butyl-p-cresol, 4,4 '-Thiobis (3-methyl-6-t-butylphenol), 4,4'-butylidenebis (3-methyl-6-t-butylphenol), 1,3,5-tris (3', 5'-di-t -Butyl-4'-hydroxybenzyl) -S-triazine-2,4,6- (1H, 3H, 5H) trione, stearyl- ⁇ - (3,5-di-t-butyl-4-hydroxyphenyl) propi , Triethylene glycol bis [3- (3-
  • thiol-based antioxidant examples include distearyl-3,3′-thiodipropionate, pentaerythritol-tetrakis- ( ⁇ -lauryl-thiopropionate), and the like.
  • phosphite antioxidant examples include tris (2,4-di-t-butylphenyl) phosphite, distearyl pentaerythritol diphosphite, di (2,6-di-t-butylphenyl) pentaerythritol.
  • Diphosphite bis- (2,6-di-t-butyl-4-methylphenyl) -pentaerythritol diphosphite, tetrakis (2,4-di-t-butylphenyl) 4,4'-biphenylene-diphosphonite 2,2'-methylenebis (4,6-di-t-butylphenyl) octyl phosphite and the like.
  • the above antioxidant and the following light stabilizer can be used in combination.
  • hindered amine light stabilizer examples include bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, Bis (1,2,2,6,6-pentamethyl-4-piperidyl) -2- (3,5-di-t-butyl-4-hydroxybenzyl) -2-n-butylmalonate, 1-methyl- 8- (1,2,2,6,6-pentamethyl-4-piperidyl) -sebacate, 1- [2- [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyloxy] ethyl ] -4- [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionyloxy] -2,2,6,6-tetramethylpiperidine, 4-benzoyloxy-2,2,6 6-Tetrame Lupiperidine, tetrakis (2,2,6,6
  • nickel-based UV stabilizers include [2,2'-thiobis (4-t-octylphenolate)]-2-ethylhexylamine nickel (II), nickel complex-3,5-di-t-butyl-4- Hydroxybenzyl phosphate monoethylate, nickel dibutyl dithiocarbamate, etc. can also be used.
  • a hindered amine light stabilizer containing only a tertiary amine is preferable.
  • bis (1,2,2,6,6-pentamethyl-4-piperidyl) is preferable.
  • a condensate of 1,2,2,6,6-pentamethyl-4-piperidinol / tridecyl alcohol and 1,2,3,4-butanetetracarboxylic acid is preferred.
  • Gas barrier layer It is also preferable to provide a gas barrier layer in the present invention. This is to prevent deterioration of the humidity, in particular, deterioration of the resin base material and various functional elements protected by the resin base material due to high humidity.
  • the moisture barrier property of the gas barrier layer it is preferable to adjust the moisture barrier property of the gas barrier layer so that the water vapor permeability at 40 ° C. and 90% RH is preferably 1 g / m 2 ⁇ day / ⁇ m or less.
  • the gas barrier layer according to the present invention is not particularly limited in its formation method, but an inorganic film layer may be formed by vapor deposition. After coating the ceramic precursor of the inorganic oxide film, the coating film is heated and / or Alternatively, it is also preferable to form an inorganic oxide film by ultraviolet irradiation.
  • the gas barrier layer according to the present invention can be formed by applying a general heating method after applying a ceramic precursor that forms an inorganic oxide film by heating, but is preferably formed by local heating.
  • the ceramic precursor is preferably a sol-like organometallic compound or polysilazane.
  • the protective layer of the present invention can preferably contain an inorganic oxide. Silicon (Si), aluminum (Al), zirconium (Zr), titanium (Ti), tantalum (Ta), zinc (Zn), barium (Ba), indium (In), tin (Sn), niobium (Nb), etc. It is characterized by being an oxide of the element.
  • silicon oxide aluminum oxide, zirconium oxide and the like.
  • silicon oxide is preferable, and particles having an average particle diameter of less than 50 nm are preferably used.
  • the protective layer in the present invention is provided for preventing scratches.
  • the protective layer may have a two-layer structure.
  • the protective layer closest to the metal reflective layer does not need to be easily peeled off, but it is also preferable that the protective layer placed closer to the sunlight incident side than the protective layer is placed so as to be easily peeled off.
  • the outermost protective layer is deteriorated by ultraviolet rays or by scratches, the performance can be maintained for a long time by peeling the deteriorated protective layer and making the inner intact protective layer a resurface layer.
  • the protective layer can be composed of an acrylic resin, urethane resin, melamine resin, epoxy resin, organic silicate compound, silicone resin, or the like.
  • silicone resins and acrylic resins are preferable in terms of hardness and durability.
  • an active energy ray-curable acrylic resin or a thermosetting acrylic resin is also preferably used.
  • an acrylic resin containing a rubber polymerization component having a glass transition temperature Tg of room temperature or lower is excellent in impact resistance.
  • the active energy ray-curable acrylic resin or the thermosetting acrylic resin is a composition containing a polyfunctional acrylate, an acrylic oligomer or a reactive diluent as a polymerization curing component.
  • Acrylic oligomers include polyester acrylates, urethane acrylates, epoxy acrylates, polyether acrylates, etc., including those in which a reactive acrylic group is bonded to an acrylic resin skeleton, and rigid materials such as melamine and isocyanuric acid. A structure in which an acrylic group is bonded to a simple skeleton can also be used.
  • the reactive diluent has a function of a solvent in the coating process as a medium of the coating agent, and has a group that itself reacts with a monofunctional or polyfunctional acrylic oligomer. It becomes a copolymerization component.
  • polyfunctional acrylic cured paints include Mitsubishi Rayon Co., Ltd. (trade name “Diabeam (registered trademark)” series, etc.), Nagase Sangyo Co., Ltd. (trade name “Denacol (registered trademark)” series, etc. ), Shin-Nakamura Co., Ltd. (trade name “NK Ester” series, etc.), DIC Corporation; (trade name “UNIDIC (registered trademark)” series, etc.), Toagosei Co., Ltd.
  • plastic films such as thermoplastic acrylic film, polycarbonate film, polyarylate film, polyethylene naphthalate film, polyethylene terephthalate film, fluorine film, or resin kneaded with titanium oxide, silica, aluminum powder, copper powder, etc.
  • a resin film subjected to surface treatment such as metal deposition is also used. It is preferable to use an acrylic film.
  • the thickness of the film is not particularly limited but is usually preferably in the range of 10 to 125 ⁇ m.
  • various additives can be further blended in the protective layer as necessary within the range where the effects of the present invention are not impaired.
  • stabilizers such as antioxidants and light stabilizers, surfactants, leveling agents and antistatic agents can be used.
  • an ultraviolet absorber in order to protect the reflective layer of resin, silver or the like from the ultraviolet rays of sunlight, and it is more preferred to contain it in the entire protective layer.
  • the leveling agent is effective in reducing surface irregularities, particularly when the functional layer is applied.
  • a dimethylpolysiloxane-polyoxyalkylene copolymer for example, SH190 manufactured by Toray Dow Corning Co., Ltd.
  • silicone leveling agent for example, SH190 manufactured by Toray Dow Corning Co., Ltd.
  • an ultraviolet absorber can be added for the purpose of preventing deterioration due to sunlight or ultraviolet rays.
  • the protective layer preferably contains an ultraviolet absorber.
  • ultraviolet absorbers examples include benzophenone, benzotriazole, phenyl salicylate, and triazine.
  • benzophenone ultraviolet absorber examples include 2,4-dihydroxy-benzophenone, 2-hydroxy-4-methoxy-benzophenone, 2-hydroxy-4-n-octoxy-benzophenone, 2-hydroxy-4-dodecyloxy-benzophenone, 2- Hydroxy-4-octadecyloxy-benzophenone, 2,2'-dihydroxy-4-methoxy-benzophenone, 2,2'-dihydroxy-4,4'-dimethoxy-benzophenone, 2,2 ', 4,4'-tetra And hydroxy-benzophenone.
  • benzotriazole ultraviolet absorber examples include 2- (2′-hydroxy-5-methylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′, 5′-di-t-butylphenyl) benzotriazole, 2 -(2'-hydroxy-3'-t-butyl-5'-methylphenyl) benzotriazole and the like.
  • phenyl salicylate ultraviolet absorber examples include phenylsalicylate, 2-4-di-t-butylphenyl-3,5-di-t-butyl-4-hydroxybenzoate, and the like.
  • hindered amine ultraviolet absorber examples include bis (2,2,6,6-tetramethylpiperidin-4-yl) sebacate.
  • triazine ultraviolet absorbers examples include 2,4-diphenyl-6- (2-hydroxy-4-methoxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy-4-). Ethoxyphenyl) -1,3,5-triazine, 2,4-diphenyl- (2-hydroxy-4-propoxyphenyl) -1,3,5-triazine, 2,4-diphenyl- (2-hydroxy-4-) Butoxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy-4-butoxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2- Hydroxy-4-hexyloxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy-4-octyloxyphenyl) -1,3,5-tria 2,4-diphenyl-6- (2-hydroxy-4-dodecyloxy
  • the ultraviolet absorber includes a compound having a function of converting the energy held by ultraviolet rays into vibrational energy in the molecule and releasing the vibrational energy as thermal energy. Furthermore, those that exhibit an effect when used in combination with an antioxidant, a colorant, or the like, or a light stabilizer that acts as a light energy conversion agent, called a quencher, can be used in combination. However, when using the above-mentioned ultraviolet absorber, it is necessary to select one in which the light absorption wavelength of the ultraviolet absorber does not overlap with the effective wavelength of the photopolymerization initiator.
  • the amount of the ultraviolet absorber used is 0.1 to 20% by mass, preferably 1 to 15% by mass, and more preferably 3 to 10% by mass. When the amount is more than 20% by mass, the adhesion is deteriorated.
  • the total thickness of the solar light collecting film mirror according to the present invention is preferably from 75 to 250 ⁇ m, more preferably from 90 to 230 ⁇ m, and even more preferably from the viewpoints of preventing the mirror from bending, regular reflectance, and handling properties. ⁇ 220 ⁇ m. Mix in toluene to a solids concentration of 10%.
  • thermoplastic polymethyl methacrylate resin film weight average molecular weight 100,000, number average molecular weight 50000; hereinafter simply referred to as “acrylic film”
  • an ultraviolet absorber (Comparative Compound 1, TINUVIN 928, manufactured by BASF Japan Ltd.) is acrylic.
  • a resin base film is prepared by containing 5% by mass in the film and serving as a protective layer having a thickness of 50 ⁇ m.
  • polyester resin Polyethylene SP-181, manufactured by Nippon Synthetic Chemical Co., Ltd.
  • melamine resin Super Becamine J-820, manufactured by DIC
  • TDI-based isocyanate (2,4-tolylene diisocyanate
  • HDMI -Based isocyanate (1,6-hexamethylene diisocyanate) in a resin solid content ratio of 20: 1: 1: 2 and a solid content concentration of 10% by mass
  • an antioxidant (1,2,2′-methylenebis ( 4,6-di-t-butylphenyl) octyl phosphite) is added in an amount of 0.3% by mass to the resin in the layer, and the resin mixed in toluene is coated by a gravure coating method to have a thickness of 0.1 ⁇ m.
  • a metal corrosion protection layer On this metal corrosion prevention layer, a silver reflection layer having a thickness of 80 nm is formed as a metal reflection layer by vacuum deposition. On this silver reflective layer, as an adjacent layer far from the light incident side of the silver reflective layer, a resin in which a polyester resin and TDI (tolylene diisocyanate) isocyanate are mixed at a resin solid content ratio of 10: 2 is gravure. Coating is performed by a coating method to form a layer having a thickness of 0.1 ⁇ m, and a solar light collecting film mirror is produced.
  • TDI tolylene diisocyanate
  • the film mirror for collecting sunlight according to the present invention can be preferably used for the purpose of collecting sunlight. Although it can be used as a solar light collecting mirror by itself, the film mirror for solar light collecting is more preferably coated on the resin base material surface opposite to the side having the metal reflective layer with the resin base material interposed therebetween. This is to use the solar light collecting film mirror as a solar light collecting mirror by attaching the solar light collecting film mirror on the support of the solar light collecting film mirror, particularly on the metal support, through the adhesive layer.
  • the adhesive layer is not particularly limited, and for example, any of a dry laminating agent, a wet laminating agent, an adhesive, a heat seal agent, a hot melt agent, and the like is used.
  • polyester resin urethane resin, polyvinyl acetate resin, acrylic resin, nitrile rubber and the like are used.
  • the laminating method is not particularly limited, and for example, it is preferable to carry out the roll method continuously from the viewpoint of economy and productivity.
  • the thickness of the pressure-sensitive adhesive layer is usually preferably in the range of about 1 to 50 ⁇ m from the viewpoint of the pressure-sensitive adhesive effect, the drying speed, and the like.
  • the other substrate to be bonded to the solar light collecting film mirror of the present invention may be any material that can impart protection of the metal reflective layer, for example, an acrylic film or sheet, Polycarbonate film or sheet, polyarylate film or sheet, polyethylene naphthalate film or sheet, polyethylene terephthalate film or sheet, plastic film or sheet such as fluorine film, or resin kneaded with titanium oxide, silica, aluminum powder, copper powder, etc.
  • a film or sheet, or a resin film or sheet coated with a resin kneaded with these or subjected to surface processing such as metal deposition is used.
  • the thickness of the laminated film or sheet is not particularly limited but is preferably in the range of 12 to 250 ⁇ m.
  • these other base materials may be bonded after providing a concave portion or a convex portion before being bonded to the solar light collecting film mirror of the present invention. Molding may be performed, and bonding and molding so as to have a concave portion or a convex portion may be performed at the same time.
  • Metal support of the solar light collecting mirror steel plate, copper plate, aluminum plate, aluminum plated steel plate, aluminum alloy plated steel plate, copper plated steel plate, tin plated steel plate, chrome plated steel plate, stainless steel plate, etc.
  • a metal material having high conductivity can be used.
  • a plated steel plate In the present invention, it is particularly preferable to use a plated steel plate, a stainless steel plate, an aluminum plate or the like having good corrosion resistance.
  • the solar light collecting mirror of the present invention can be suitably used for various forms of solar thermal power generation apparatuses.
  • a curved sunlight collecting mirror that condenses light in a straight line
  • a solar light receiving and heat transfer unit disposed so as to be parallel to the longitudinal direction of the sunlight collecting mirror, and the sun
  • the present invention can be suitably used for a trough solar thermal power generation apparatus including a thermoelectric conversion unit that converts thermal energy transmitted from the light receiving / heat transfer unit into electric energy.
  • FIG. 6 shows, as an example, a system diagram of a solar thermal power generation apparatus (system) 10 using the solar light collecting mirror of the present invention.
  • the liquid air is pressurized from 1 to 100 MPa by the pump 11 from the liquid air tank 15.
  • the heated liquid air is heated to near room temperature by the regenerative heat exchanger 12, and then further heated by the solar heat collector 13 (the solar light collecting mirror 13a and the solar light receiving / heat transfer portion 13b), and 950 It reaches a high temperature of ⁇ 1050 ° C.
  • the high-temperature and high-pressure air generates power by driving the turbine 14, and then passes through the regenerative heat exchanger 2 and is released to the atmosphere. Most of the motive power obtained from the regenerative heat exchanger 2 is converted into electric energy or mechanical energy by the thermoelectric converter 16 (generator or load device) while turning a part of the power to the pump drive.
  • the turbine 14 and the pump 11 are mechanically coupled.
  • the pump 11 can be driven electrically by a motor and coupled electrically.
  • liquid air is produced and stored with surplus electric power at night or the like, and power generation is performed when sunlight in the daytime can be collected.
  • cryogenic fluid such as liquid nitrogen or liquid hydrogen may be used instead of liquid air.
  • the solar light collecting mirror of the present invention can be suitably used for various types of solar power generation apparatuses.
  • a curved solar collector mirror that condenses light in a straight line
  • a photoelectric conversion device that converts photothermal energy into electrical energy, arranged parallel to the longitudinal direction of the solar collector mirror. It can use suitably for the trough type solar power generation device which comprises the conversion part.
  • FIG. 7 shows a schematic diagram of a parabolic reflecting surface linear concentrator of a concentrating solar power generation device as an example.
  • the parabolic reflecting surface linear concentrator of the concentrating solar power generation device is a focal line (collection of focal points) of a solar condensing mirror having a reflecting surface that includes the apex of the parabola and is symmetric with respect to the main axis that is the optical axis
  • the solar cells are arranged in the upper major axis direction.
  • the antifouling property is high, so that the deterioration of the reflectance and the regular reflectance is prevented, the partial replacement is easy, and the light reflectance can be maintained at a low cost.
  • a solar light collecting mirror can be provided.
  • a trough solar thermal power generation apparatus and a solar power generation apparatus provided with the solar light collecting mirror can be provided.
  • the groove can be moved sideways, and dirty water can be released to the outside. Moreover, only the dirty light reflection film mirror in the lower center portion can be replaced, and can be efficiently installed by sticking it sideways.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Sustainable Energy (AREA)
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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

L'invention concerne un miroir de concentration solaire qui possède d'excellentes propriétés anti-encrassement, qui facilite un remplacement partiel et qui peut conserver une réflectivité élevée à coût réduit. L'invention concerne également un dispositif de génération d'électricité thermique solaire à gorge et un dispositif de génération d'électricité solaire à gorge qui sont équipés de ce miroir de concentration solaire. Le miroir de concentration solaire possède une forme allongée dans laquelle une section transversale parallèle à la longueur possède une forme linéaire, tandis que la section transversale perpendiculaire à la longueur possède une forme macroscopique courbe, et est caractérisé en ce qu'il est fait de plusieurs miroirs de type films allongés discrets divisés dans une direction perpendiculaire à la longueur dudit miroir de concentration solaire.
PCT/JP2011/054297 2010-03-18 2011-02-25 Miroir de concentration solaire, et dispositif de génération d'électricité thermique solaire à gorge et dispositif de génération d'électricité solaire à gorge le comprenant WO2011114861A1 (fr)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013016828A1 (fr) 2011-08-04 2013-02-07 6637418 Canada Inc. Carrying On Business As Rackam Concentrateurs solaires, procédé de fabrication et utilisations de ceux-ci
CN105759412A (zh) * 2016-05-03 2016-07-13 山东理工大学 一种由190个非球面反射镜组成的太阳能聚光***
JP2018011459A (ja) * 2016-07-14 2018-01-18 株式会社カネカ 集光型太陽電池システム及び発電方法

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JPS51146246A (en) * 1975-02-13 1976-12-15 Unisearch Ltd Condensing apparatus for solar radiation
JPS5725305U (fr) * 1980-07-21 1982-02-09
JPS61154942A (ja) * 1984-12-24 1986-07-14 ミネソタ　マイニング　アンド　マニユフアクチユアリング　コンパニー 耐腐食性反射鏡
JP2002286916A (ja) * 2001-03-28 2002-10-03 Sekisui Jushi Co Ltd 自浄性集光反射体及び太陽光集光発電装置
WO2011001545A1 (fr) * 2009-07-02 2011-01-06 三井造船株式会社 Générateur photovoltaïque solaire et son procédé de collecte de lumière

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US20080178927A1 (en) * 2007-01-30 2008-07-31 Thomas Brezoczky Photovoltaic apparatus having an elongated photovoltaic device using an involute-based concentrator
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JPS50159746A (fr) * 1974-06-14 1975-12-24
JPS51146246A (en) * 1975-02-13 1976-12-15 Unisearch Ltd Condensing apparatus for solar radiation
JPS5725305U (fr) * 1980-07-21 1982-02-09
JPS61154942A (ja) * 1984-12-24 1986-07-14 ミネソタ　マイニング　アンド　マニユフアクチユアリング　コンパニー 耐腐食性反射鏡
JP2002286916A (ja) * 2001-03-28 2002-10-03 Sekisui Jushi Co Ltd 自浄性集光反射体及び太陽光集光発電装置
WO2011001545A1 (fr) * 2009-07-02 2011-01-06 三井造船株式会社 Générateur photovoltaïque solaire et son procédé de collecte de lumière

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013016828A1 (fr) 2011-08-04 2013-02-07 6637418 Canada Inc. Carrying On Business As Rackam Concentrateurs solaires, procédé de fabrication et utilisations de ceux-ci
CN105759412A (zh) * 2016-05-03 2016-07-13 山东理工大学 一种由190个非球面反射镜组成的太阳能聚光***
CN105759412B (zh) * 2016-05-03 2020-12-01 山东理工大学 一种由190个非球面反射镜组成的太阳能聚光***
JP2018011459A (ja) * 2016-07-14 2018-01-18 株式会社カネカ 集光型太陽電池システム及び発電方法

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