WO2013038555A1 - Solar heat receiver - Google Patents

Solar heat receiver Download PDF

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Publication number
WO2013038555A1
WO2013038555A1 PCT/JP2011/071186 JP2011071186W WO2013038555A1 WO 2013038555 A1 WO2013038555 A1 WO 2013038555A1 JP 2011071186 W JP2011071186 W JP 2011071186W WO 2013038555 A1 WO2013038555 A1 WO 2013038555A1
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Prior art keywords
heat
casing
solar
sunlight
heat transfer
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PCT/JP2011/071186
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French (fr)
Japanese (ja)
Inventor
青山　邦明
小林　一太
田川　雅士
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三菱重工業株式会社
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Priority to PCT/JP2011/071186 priority Critical patent/WO2013038555A1/en
Publication of WO2013038555A1 publication Critical patent/WO2013038555A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/40—Casings
    • 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
    • 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
    • Y02E10/44—Heat exchange systems

Definitions

  • the present invention relates to a solar heat receiver that heats a compressive working fluid passing through the inside of a heat transfer tube by heating with sunlight.
  • the present invention has been made in view of the above circumstances, and can improve the thermal efficiency by uniformly heating the peripheral surface of the heat transfer tube through which the compressive working fluid flows, and the thermal stress acting on the heat transfer tube can be improved.
  • An object of the present invention is to provide a solar heat receiver that can be made uniform to extend the life of a heat transfer tube.
  • the solar light entrance is formed at each position where the solar light projected from the light collector can be irradiated to one surface and the other surface of the heat receiving surface. It is characterized by that.
  • the configuration of the present invention is as follows.
  • a casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
  • a solar heat receiver with In the casing, a plurality of heat receiving surfaces spreading in a vertical plane, when viewed in plan, is set radially with the tower as a center, and a plurality of the heat transfer tubes are arranged along each heat receiving surface,
  • the solar light inlet is formed at each position where the solar light projected from the light collector can be irradiated to the opposing surfaces of the heat receiving surfaces adjacent to each other in the circumferential direction in the casing. It is characterized by.
  • the configuration of the present invention is as follows.
  • a casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
  • a solar heat receiver with In the casing a plurality of heat receiving surfaces spreading in a vertical plane are set in a state where adjacent ones face each other while taking a mutual interval, and a plurality of the heat transfer tubes are arranged along each heat receiving surface,
  • the solar light inlet is formed at each position where the sunlight projected from the light collector can be irradiated to one surface and the other surface of the heat receiving surfaces of the casing. It is characterized by.
  • the compressive working fluid passing through the heat transfer tube can be heated uniformly, the heating efficiency can be improved, and the thermal stress acting on the heat transfer tube can be made uniform.
  • the stress acting on the heat transfer tube can be reduced as a whole, and the life of the heat transfer tube can be extended.
  • positioned The block diagram for demonstrating the relationship between the solar heat receiver which concerns on Example 3 of this invention, and the mirror arrangement
  • FIG. 1 is a schematic configuration diagram showing a solar thermal dust turbine and a solar thermal gas turbine power generator equipped with a solar heat receiver according to the first embodiment.
  • FIG. 2 is a solar heat receiver according to the first embodiment, and sunlight is applied to the solar heat receiver.
  • FIG. 3 is a diagram for explaining the outline of the condenser, and
  • FIG. 4 is a simplified illustration of the arrangement state of the heat transfer tubes. It is a schematic block diagram shown.
  • a solar gas turbine 1 includes a compressor 2 that compresses and compresses a compressive working fluid (working fluid such as air), and heats the compressive working fluid with heat converted from sunlight.
  • the apparatus is mainly composed of the solar heat receiver 100 according to the first embodiment for raising the temperature and the turbine 3 that converts thermal energy held by the high-temperature and high-pressure compressive working fluid into mechanical energy. That is, the solar gas turbine 1 uses solar thermal energy to heat and heat the compressive working fluid instead of a combustor that burns fuel such as natural gas to generate high-temperature and high-pressure combustion gas.
  • a heat receiver 100 is provided.
  • the solar thermal gas turbine power generator 5 that generates power using sunlight is obtained.
  • the reheater 6 preheats the high-pressure compressive working fluid boosted by the compressor 2 using the exhaust heat of the compressive working fluid discharged from the chimney 7 to the atmosphere after working in the turbine 3. .
  • the solar heat receiver 100 is a device for converting sunlight into heat energy, and as shown in FIG. 2, the top of the tower 9 standing on the ground 8 (for example, the tip of the tower 9 having a height of 100 m). ).
  • mirror arrangement surfaces 10a and 10b are set.
  • two mirror arrangement surfaces 10a and 10b are arranged with the tower 9 interposed therebetween.
  • a plurality of collectors 11 (for example, 400) that reflect sunlight toward the solar heat receiver 100 are arranged (for example, 400).
  • Each concentrator 11 is a device that condenses light while efficiently reflecting sunlight, and the direction of the concentrator 11 is the sun so that the reflected and condensed sunlight is projected toward the solar heat receiver 100. It is to be controlled according to the movement of.
  • the casing 101 of the solar heat receiver 100 is disposed at the top of the tower 9, and a heat insulating material is applied to the inner wall surface of the casing 101 to form a heat insulating wall.
  • a heat receiving surface 102 that extends in a vertical plane is set.
  • a plurality of (for example, 500) heat transfer tubes 103 are arranged along the heat receiving surface 102 as shown in a simplified manner in FIG. That is, a surface formed by arranging a plurality of heat transfer tubes 103 in a planar shape is a heat receiving surface 102.
  • a compressive working fluid flows through each heat transfer tube 103.
  • the sunlight entrance 104a takes in the sunlight reflected and condensed by the condenser 11 arranged on the mirror arrangement surface 10a into the casing 101 and receives one surface of the heat receiving surface 102 (the left surface in FIG. 1). ) To be irradiated.
  • the sunlight entrance 104b takes the sunlight reflected and projected by the condenser 11 arranged on the mirror arrangement surface 10b into the casing 101, and the other surface of the heat receiving surface 102 (the right surface in FIG. 1). ) To be irradiated.
  • one of the heat receiving surfaces 102 that is, of the peripheral surfaces of the plurality of heat transfer tubes 103 arranged along the heat receiving surface 102, the solar light taken in from the sunlight inlet 104a is formed on the half peripheral surface on the sunlight inlet 104a side. Is irradiated.
  • the other surface of the heat receiving surface 102 that is, the peripheral surface of the plurality of heat transfer tubes 103 arranged along the heat receiving surface 102
  • sunlight taken in from the solar light inlet 104 b is placed on the half peripheral surface on the solar light inlet 104 b side. Is irradiated.
  • each heat transfer tube 103 is heated from the peripheral surface on one side and the peripheral surface on the other side, that is, both surfaces (all peripheral surfaces). Accordingly, the peripheral surface of the heat transfer tube through which the compressive working fluid flows can be heated uniformly, and the compressive working fluid can be effectively heated. Further, the thermal stress acting on the heat transfer tube 103 can be made uniform to reduce the stress acting on the heat transfer tube 103 as a whole, and the life of the heat transfer tube 103 is extended. Further, since the heat transfer tubes 103 are arranged along one heat receiving surface 102, a simple tube arrangement structure is obtained, and the overall configuration can be simplified.
  • the compressive working fluid that passes through the heat transfer tube is uniformly heated, and thus is sent from the solar heat receiver 100 to the turbine 3. Since the temperature of the compressive working fluid rises more than before, the turbine efficiency can be improved more than before.
  • the solar thermal gas turbine 1 having better turbine efficiency than the conventional one is provided, and the power generation efficiency is higher than before, so that the energy recovery rate can be improved. , Its reliability can be improved.
  • a solar heat receiver 200 according to Embodiment 2 of the present invention will be described with reference to FIG.
  • the solar heat receiver 200 is a device for converting sunlight into heat energy, and as shown in FIG. 5, the top of the tower 9 erected on the ground 8 (for example, the tip of the tower 9 having a height of 200 m). ).
  • mirror arrangement surfaces 10a, 10b, and 10c are set.
  • three mirror arrangement surfaces 10a, 10b, and 10c are arranged at substantially equal intervals adjacent to each other in the circumferential direction on the circumference centered on the tower 9 when viewed in a plan view.
  • a plurality of condensers 11 (for example, 400) that reflect sunlight toward the solar heat receiver 200 are arranged (for example, 400).
  • Each concentrator 11 is a device that collects sunlight while efficiently reflecting sunlight, and the direction of the concentrator 11 is the sun so that the reflected and condensed sunlight is projected toward the solar heat receiver 200. It is to be controlled according to the movement of.
  • the casing 201 of the solar heat receiver 200 is disposed at the top of the tower 9, and a heat insulating material is applied to the inner wall surface of the casing 201 to form a heat insulating wall.
  • a heat insulating material is applied to the inner wall surface of the casing 201 to form a heat insulating wall.
  • three heat receiving surfaces 202a, 202b, and 202c that spread in a vertical plane are set.
  • the three heat receiving surfaces 202a, 202b, and 202c are arranged radially (axisymmetrically) with the tower 9 as the center when viewed in plan view.
  • a plurality of (for example, 500) heat transfer tubes 203 are arranged along each heat receiving surface 202a, 202b, 202c (see FIG. 4). That is, the surfaces formed by arranging the plurality of heat transfer tubes 203 in a plane form are the heat receiving surfaces 202a, 202b, 202c.
  • a compressive working fluid flows through each heat transfer tube 203.
  • the casing 201 is formed with three sunlight inlets 204a, 204b, and 204c (however, the sunlight inlet 204c is not shown).
  • the sunlight entrance 204a captures the sunlight reflected and projected by the condenser 11 arranged on the mirror arrangement surface 10a into the casing 201, and opposes the heat receiving surface 202c among the surfaces of the heat receiving surface 202a.
  • the sunlight entrance 204b is a surface of the heat receiving surface 202a facing the heat receiving surface 202b and the heat receiving surface 202b of the sunlight reflected and collected by the condenser 11 disposed on the mirror arrangement surface 10b.
  • the sunlight entrance 204c includes the surface of the heat receiving surface 202b facing the heat receiving surface 202c and the heat receiving surface 202c of the sunlight reflected and collected by the collector 11 disposed on the mirror arrangement surface 10c. Are formed at positions where the surface facing the heat receiving surface 202b is irradiated.
  • the solar peripheral wall on the solar inlet 204a side has sunlight.
  • Sunlight taken from the entrance 204a is irradiated.
  • the sun light inlet 204b side has a semi-peripheral surface. Sunlight taken from the entrance 204b is irradiated.
  • the sun light inlet 204b side has a half peripheral surface. Sunlight taken from the entrance 204b is irradiated.
  • the solar inlet 204c side has a semi-peripheral surface. Sunlight taken from the entrance 204c is irradiated.
  • the sun light inlet 204a side has a half peripheral surface. Sunlight taken from the entrance 204a is irradiated.
  • each heat transfer tube 203 arranged on each heat receiving surface 202a, 202b, 202c is heated from the peripheral surface on one side and the peripheral surface on the other side, that is, both surfaces (all peripheral surfaces). Accordingly, the peripheral surface of the heat transfer tube through which the compressive working fluid flows can be heated uniformly, and the compressive working fluid can be effectively heated. Further, the thermal stress acting on the heat transfer tube 203 can be made uniform to reduce the stress acting on the heat transfer tube 203 as a whole, and the life of the heat transfer tube 203 is extended. Moreover, it is suitable for Example 2 to install in the area near the equator where sunlight is irradiated toward the ground 8 from substantially right above.
  • N heat receiving surfaces are set and three sunlight inlets are provided, but generally speaking, when N is an integer of 3 or more, N heat receiving surfaces are provided. It is also possible to set the surface and provide N sunlight entrances. Of course, also at this time, the N heat receiving surfaces are set radially (axisymmetrically arranged) around the tower when viewed in plan, and a plurality of heat transfer tubes are arranged along each heat receiving surface. Among them, N sunlight inlets are formed at each position where the sunlight projected from the condenser can be irradiated to the opposing surfaces of the heat receiving surfaces adjacent to each other in the circumferential direction.
  • a solar heat gas turbine or a solar gas generator can be configured using the solar heat receiver 200 of the second embodiment instead of the solar heat receiver 100.
  • a solar heat receiver 300 according to Embodiment 3 of the present invention will be described with reference to FIG.
  • the solar heat receiver 300 is a device for converting sunlight into heat energy. As shown in FIG. 6, the top of the tower 9 erected on the ground 8 (for example, the tip of the tower 9 having a height of 300 m). ).
  • mirror arrangement surfaces 10a, 10b, 10c, 10d, 10e, and 10f are set.
  • six mirror arrangement surfaces 10a, 10b, 10c, 10d, 10e, and 10f are arranged in a line with a mutual interval therebetween.
  • Each mirror arrangement surface 10a, 10b, 10c, 10d, 10e, 10f has a plurality of collectors 11 (see FIG. 3) that reflect sunlight toward the solar heat receiver 300 (for example, 400). Is arranged.
  • Each concentrator 11 is a device that collects sunlight while efficiently reflecting sunlight, and the direction of the concentrator 11 is the sun so that the reflected and condensed sunlight is projected toward the solar heat receiver 300. It is to be controlled according to the movement of.
  • the casing 301 of the solar heat receiver 300 is disposed at the top of the tower 9, and a heat insulating material is applied to the inner wall surface of the casing 301 to form a heat insulating wall.
  • three heat receiving surfaces 302a, 302b, and 302c that spread in the vertical plane are set.
  • the three heat receiving surfaces 302a, 302b, and 302c are set in a state where adjacent ones face each other (become parallel) while keeping a mutual interval.
  • a plurality of (for example, 500) heat transfer tubes 303 are arranged along each of the heat receiving surfaces 302a, 302b, and 302c (see FIG. 4). That is, the surfaces formed by arranging a plurality of heat transfer tubes 303 in a planar shape are heat receiving surfaces 302a, 302b, and 302c.
  • a compressive working fluid flows through each heat transfer tube 303.
  • the sunlight entrance 304a takes in the casing 301 the sunlight reflected and condensed by the condenser 11 arranged on the mirror arrangement surface 10a and projects one surface of the heat receiving surface 302a (the left surface in FIG. 6). ) To be irradiated.
  • the sunlight entrance 304b takes in sunlight reflected and collected by the condenser 11 arranged on the mirror arrangement surface 10d into the casing 301, and the other surface of the heat receiving surface 302a (the right surface in FIG. 6). ) And reflected by the collector 11 arranged on the mirror arrangement surface 10b and projected from the sunlight is taken into the casing 301, and one surface of the heat receiving surface 302b (in FIG. 6) (Left side) is formed at a position to be irradiated.
  • the sunlight entrance 304c takes the sunlight reflected and collected by the condenser 11 arranged on the mirror arrangement surface 10e into the casing 301, and the other surface of the heat receiving surface 302b (the right surface in FIG. 6). ) And reflected by the collector 11 arranged on the mirror arrangement surface 10c and projected from the sunlight is taken into the casing 301, and one surface of the heat receiving surface 302c (in FIG. 6) (Left side) is formed at a position to be irradiated.
  • the sunlight entrance 304d takes the sunlight reflected and collected by the collector 11 arranged on the mirror arrangement surface 10f into the casing 301, and the other surface of the heat receiving surface 302b (the right surface in FIG. 6). ) To be irradiated.
  • one of the heat receiving surfaces 302a that is, of the peripheral surfaces of the plurality of heat transfer tubes 303 arranged along the heat receiving surfaces 302a, the solar light taken in from the sunlight inlet 304a is formed on the half peripheral surface on the sunlight inlet 304a side. Is irradiated.
  • the other surface of the heat receiving surface 302a that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302a
  • the solar light taken in from the solar light inlet 304b on the half peripheral surface on the solar light inlet 304b side. Is irradiated.
  • one of the surfaces of the heat receiving surface 302b that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302b, was taken in from the solar light inlet 304b into the half peripheral surface on the solar light inlet 304b side. Sunlight is irradiated.
  • the sun taken in from the solar light inlet 304c is formed on the half peripheral surface on the solar light inlet 304c side. Light is irradiated.
  • one of the heat receiving surfaces 302c that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302c
  • the solar light taken in from the sunlight inlet 304c is formed on the half peripheral surface on the sunlight inlet 304c side. Is irradiated.
  • the other surface of the heat receiving surface 302c that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302c
  • the solar light taken in from the solar light inlet 304d on the half peripheral surface on the solar light inlet 304d side Is irradiated.
  • each heat transfer tube 303 arranged on each heat receiving surface 302a, 302b, 302c is heated from the peripheral surface on one side and the peripheral surface on the other side, that is, both surfaces (all peripheral surfaces). Accordingly, the peripheral surface of the heat transfer tube through which the compressive working fluid flows can be heated uniformly, and the compressive working fluid can be effectively heated. Further, the thermal stress acting on the heat transfer tube 303 can be made uniform to reduce the stress acting on the heat transfer tube 303 as a whole, and the life of the heat transfer tube 303 is extended. Moreover, it is suitable for Example 3 to install in the area of high latitude where sunlight is irradiated to the ground 8 diagonally. Furthermore, since the heat receiving surface is divided into three, the area of the heat receiving surface per sheet can be reduced, and the overall outer diameter can be reduced.
  • M heat receiving surfaces are set and four sunlight inlets are provided.
  • M heat receiving surfaces are provided. It is also possible to set the surface to have M + 1 solar entrances.
  • M heat receiving surfaces are set in a state where adjacent ones face each other while being spaced apart from each other, and a plurality of heat tubes are arranged along each heat receiving surface.
  • M + 1 sunlight inlets are formed at each position where the sunlight projected from the collector can be irradiated to one surface and the other surface.
  • a solar heat gas turbine or a solar gas generator can be configured using the solar heat receiver 300 of the third embodiment instead of the solar heat receiver 100.

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Abstract

A heat-receiving surface (102) which broadens in the vertical plane is installed within the casing (101) of a solar heat receiver (100) arranged at the apex of a tower (9). Heat transfer pipes (103) through which a compressible operating fluid flows are arranged within the plane of the heat-receiving surface (102). Sunlight projected from a light collector arranged in a mirror-arrangement surface (10a) is picked up in the casing (101) through a solar light entrance (104a), and irradiates one circumferential-surface side of the heat transfer pipes (103). Sunlight projected from a light collector arranged in a mirror-arrangement surface (10b) is picked up in the casing (101) through a solar light entrance (104b), and irradiates the other circumferential-surface side of the heat transfer pipes (103). Consequently, the entire circumference of the heat transfer pipes (103) is irradiated with sunlight and the pipes are heated uniformly, thus improving heating efficiency.

Description

太陽熱受熱器Solar heat receiver
　本発明は、伝熱管の内部を通過する圧縮性作動流体を、太陽光の熱により加熱して昇温させる太陽熱受熱器に関するものである。 The present invention relates to a solar heat receiver that heats a compressive working fluid passing through the inside of a heat transfer tube by heating with sunlight.
　伝熱管の内部を通過する圧縮性作動流体を、太陽光の熱により加熱して昇温させる太陽熱受熱器（太陽熱集熱器）としては、例えば、特許文献１に開示されたものが知られている。 As a solar heat receiver (solar heat collector) for heating a compressible working fluid passing through the inside of a heat transfer tube by heating with sunlight, for example, the one disclosed in Patent Document 1 is known. Yes.
特開平２－５２９５３号公報JP-A-2-52953
　しかしながら、上記特許文献１の第５図に開示された太陽熱受熱器（受蓄熱器）では、複数の伝熱管（蓄熱材付伝熱管）が、太陽光入口（開口部）の中心を通る中心軸まわりに円筒形に配置されている。
　そのため、伝熱管の周面のうち、前記中心軸側の周面には太陽光が直接的に照射されるが、前記中心軸側に向いていない反対側の周面には、太陽光が直接的に照射されることはない。
　この結果、入熱に不均一が生じ易いという欠点がある。
　更に、伝熱管の周面に沿って温度差が生じて、伝熱管の熱応力が高くなるという欠点がある。 However, in the solar heat receiver (heat accumulator) disclosed in FIG. 5 of Patent Document 1, a plurality of heat transfer tubes (heat transfer tubes with a heat storage material) pass through the center of the sunlight inlet (opening). It is arranged in a cylindrical shape around it.
Therefore, among the peripheral surfaces of the heat transfer tubes, sunlight is directly applied to the peripheral surface on the central axis side, but sunlight is directly applied to the peripheral surface on the opposite side not facing the central axis side. Will not be irradiated.
As a result, there is a drawback that non-uniformity in heat input is likely to occur.
Furthermore, there is a drawback that a temperature difference occurs along the peripheral surface of the heat transfer tube, and the heat stress of the heat transfer tube becomes high.
　本発明は、上記の事情に鑑みてなされたもので、圧縮性作動流体が流通する伝熱管の周面を均一に加熱して熱効率を向上することができるとともに、伝熱管に作用する熱応力を均一化して伝熱管の寿命を長くすることができる太陽熱受熱器を提供することを目的とする。 The present invention has been made in view of the above circumstances, and can improve the thermal efficiency by uniformly heating the peripheral surface of the heat transfer tube through which the compressive working fluid flows, and the thermal stress acting on the heat transfer tube can be improved. An object of the present invention is to provide a solar heat receiver that can be made uniform to extend the life of a heat transfer tube.
　上記課題を解決する本発明の構成は、
　地盤に立設されたタワーの頂部に配置されると共に、前記地盤に配置された集光器で集められて投射されてきた太陽光を取り込む太陽光入口が形成されたケーシングと、
　前記ケーシング内に配置されており、前記ケーシング内に取り込まれた太陽光が照射して加熱される複数本の伝熱管と、
　を備えた太陽光受熱器であって、
　前記ケーシング内に、鉛直面内で広がる受熱面を設定し、この受熱面に沿って複数の前記伝熱管を配置し、
　前記ケーシングのうち、前記受熱面の一方の面及び他方の面に対して、前記集光器から投射されてきた太陽光を照射することができる各位置に、前記太陽光入口を形成していることを特徴とする。 The configuration of the present invention for solving the above problems is as follows.
A casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and
A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
A solar heat receiver with
In the casing, set a heat receiving surface extending in a vertical plane, arrange a plurality of the heat transfer tubes along the heat receiving surface,
Among the casing, the solar light entrance is formed at each position where the solar light projected from the light collector can be irradiated to one surface and the other surface of the heat receiving surface. It is characterized by that.
　また本発明の構成は、
　地盤に立設されたタワーの頂部に配置されると共に、前記地盤に配置された集光器で集められて投射されてきた太陽光を取り込む太陽光入口が形成されたケーシングと、
　前記ケーシング内に配置されており、前記ケーシング内に取り込まれた太陽光が照射して加熱される複数本の伝熱管と、
　を備えた太陽光受熱器であって、
　前記ケーシング内に、鉛直面内で広がる複数の受熱面を、平面視で見た時に前記タワーを中心として放射状に設定し、各受熱面に沿って複数の前記伝熱管を配置し、
　前記ケーシングのうち、周方向に関して隣接する受熱面の相対向する面に対して、前記集光器から投射されてきた太陽光をそれぞれ照射することができる各位置に、前記太陽光入口を形成していることを特徴とする。 The configuration of the present invention is as follows.
A casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and
A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
A solar heat receiver with
In the casing, a plurality of heat receiving surfaces spreading in a vertical plane, when viewed in plan, is set radially with the tower as a center, and a plurality of the heat transfer tubes are arranged along each heat receiving surface,
The solar light inlet is formed at each position where the solar light projected from the light collector can be irradiated to the opposing surfaces of the heat receiving surfaces adjacent to each other in the circumferential direction in the casing. It is characterized by.
　また本発明の構成は、
　地盤に立設されたタワーの頂部に配置されると共に、前記地盤に配置された集光器で集められて投射されてきた太陽光を取り込む太陽光入口が形成されたケーシングと、
　前記ケーシング内に配置されており、前記ケーシング内に取り込まれた太陽光が照射して加熱される複数本の伝熱管と、
　を備えた太陽光受熱器であって、
　前記ケーシング内に、鉛直面内で広がる複数の受熱面を相互間隔を取りつつ隣接するもの同士が対面する状態で設定し、各受熱面に沿って複数の前記伝熱管を配置し、
　前記ケーシングのうち、前記各受熱面の一方の面及び他方の面に対して、前記集光器から投射されてきた太陽光をそれぞれ照射することができる各位置に、前記太陽光入口を形成していることを特徴とする。 The configuration of the present invention is as follows.
A casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and
A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
A solar heat receiver with
In the casing, a plurality of heat receiving surfaces spreading in a vertical plane are set in a state where adjacent ones face each other while taking a mutual interval, and a plurality of the heat transfer tubes are arranged along each heat receiving surface,
The solar light inlet is formed at each position where the sunlight projected from the light collector can be irradiated to one surface and the other surface of the heat receiving surfaces of the casing. It is characterized by.
　本発明に係る太陽熱受熱器によれば、伝熱管内を通過する圧縮性作動流体を一様に加熱することができ加熱効率を向上させることができるとともに、伝熱管に作用する熱応力を均一化して伝熱管に作用する応力を全体的に低減することができ、伝熱管の寿命を延ばすことができる。 According to the solar heat receiver according to the present invention, the compressive working fluid passing through the heat transfer tube can be heated uniformly, the heating efficiency can be improved, and the thermal stress acting on the heat transfer tube can be made uniform. Thus, the stress acting on the heat transfer tube can be reduced as a whole, and the life of the heat transfer tube can be extended.
本発明の実施例１に係る太陽熱受熱器を具備した太陽熱ダスタービンおよび太陽熱ガスタービン発電装置を示す概略構成図。BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram which shows the solar thermal dust turbine and solar thermal gas turbine power generator which comprised the solar thermal receiver which concerns on Example 1 of this invention. 本発明の実施例１に係る太陽熱受熱器と、この太陽熱受熱器に太陽光を集光させる集光器が配置されたミラー配置面との関係を説明するための構成図。BRIEF DESCRIPTION OF THE DRAWINGS The block diagram for demonstrating the relationship between the solar heat receiver which concerns on Example 1 of this invention, and the mirror arrangement | positioning surface where the collector which condenses sunlight to this solar heat receiver is arrange | positioned. 集光器の概要を説明するための構成図。The block diagram for demonstrating the outline | summary of a collector. 伝熱管の配置状態を簡略化して示す概略構成図。The schematic block diagram which simplifies and shows the arrangement | positioning state of a heat exchanger tube. 本発明の実施例２に係る太陽熱受熱器と、この太陽熱受熱器に太陽光を集光させる集光器が配置されたミラー配置面との関係を説明するための構成図。The block diagram for demonstrating the relationship between the solar heat receiver which concerns on Example 2 of this invention, and the mirror arrangement | positioning surface where the collector which condenses sunlight to this solar heat receiver is arrange | positioned. 本発明の実施例３に係る太陽熱受熱器と、この太陽熱受熱器に太陽光を集光させる集光器が配置されたミラー配置面との関係を説明するための構成図。The block diagram for demonstrating the relationship between the solar heat receiver which concerns on Example 3 of this invention, and the mirror arrangement | positioning surface by which the collector which condenses sunlight to this solar heat receiver is arrange | positioned.
　以下、本発明の実施の形態について、実施例に基づき詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail based on examples.
　本発明の実施例１に係る太陽熱受熱器について、図１から図４を参照して説明する。
　図１は実施例１に係る太陽熱受熱器を具備した太陽熱ダスタービンおよび太陽熱ガスタービン発電装置を示す概略構成図、図２は実施例１に係る太陽熱受熱器と、この太陽熱受熱器に太陽光を集光させる集光器が配置されたミラー配置面との関係を説明するための図、図３は集光器の概要を説明するための図、図４は伝熱管の配置状態を簡略化して示す概略構成図である。 A solar heat receiver according to Embodiment 1 of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic configuration diagram showing a solar thermal dust turbine and a solar thermal gas turbine power generator equipped with a solar heat receiver according to the first embodiment. FIG. 2 is a solar heat receiver according to the first embodiment, and sunlight is applied to the solar heat receiver. FIG. 3 is a diagram for explaining the outline of the condenser, and FIG. 4 is a simplified illustration of the arrangement state of the heat transfer tubes. It is a schematic block diagram shown.
　図１に示すように、太陽熱ガスタービン１は、圧縮性作動流体（空気等の作動流体）を圧縮して昇圧させる圧縮機２と、太陽光を変換した熱により圧縮性作動流体を加熱して昇温させる実施例１に係る太陽熱受熱器１００と、高温高圧の圧縮性作動流体が保有する熱エネルギーを機械エネルギーに変換するタービン３とを主な構成要素とする装置である。
　すなわち、太陽熱ガスタービン１は、天然ガス等の燃料を燃焼させて高温高圧の燃焼ガスを生成する燃焼器に代えて、太陽光の熱エネルギーを利用して圧縮性作動流体を加熱昇温する太陽熱受熱器１００を備えたものである。 As shown in FIG. 1, a solar gas turbine 1 includes a compressor 2 that compresses and compresses a compressive working fluid (working fluid such as air), and heats the compressive working fluid with heat converted from sunlight. The apparatus is mainly composed of the solar heat receiver 100 according to the first embodiment for raising the temperature and the turbine 3 that converts thermal energy held by the high-temperature and high-pressure compressive working fluid into mechanical energy.
That is, the solar gas turbine 1 uses solar thermal energy to heat and heat the compressive working fluid instead of a combustor that burns fuel such as natural gas to generate high-temperature and high-pressure combustion gas. A heat receiver 100 is provided.
　また、発電機４を太陽熱ガスタービン１と同軸に連結し、太陽熱ガスタービン１で発電機４を駆動するように構成すれば、太陽光を利用して発電する太陽熱ガスタービン発電装置５となる。
　なお、再熱器６は、タービン３で仕事をした後に煙突７から大気へ排出される圧縮性作動流体の排熱を用いて、圧縮機２で昇圧された高圧の圧縮性作動流体を予熱する。 Moreover, if the generator 4 is connected coaxially with the solar thermal gas turbine 1 and the generator 4 is driven by the solar thermal gas turbine 1, the solar thermal gas turbine power generator 5 that generates power using sunlight is obtained.
The reheater 6 preheats the high-pressure compressive working fluid boosted by the compressor 2 using the exhaust heat of the compressive working fluid discharged from the chimney 7 to the atmosphere after working in the turbine 3. .
　太陽熱受熱器１００は、太陽光を熱エネルギーに変換するための装置であり、図２に示すように、地盤８に立設されたタワー９の頂部（例えば、高さ１００ｍのタワー９の先端部）に配置されている。 The solar heat receiver 100 is a device for converting sunlight into heat energy, and as shown in FIG. 2, the top of the tower 9 standing on the ground 8 (for example, the tip of the tower 9 having a height of 100 m). ).
　地盤８には、ミラー配置面１０ａ，１０ｂが設定されている。本例では、タワー９を間に挟んで、２つのミラー配置面１０ａ，１０ｂが配置されている。
　各ミラー配置面１０ａ，１０ｂには、太陽熱受熱器１００に向かって、太陽光を反射させる、集光器１１（図３参照）が複数基（例えば、４００基）配置されている。
　各集光器１１は、太陽光を効率良く反射しつつ集光する装置であり、反射・集光した太陽光を太陽熱受熱器１００に向かって投射するように、集光器１１の向きは太陽の移動に合わせて制御されるようになっている。 On the ground 8, mirror arrangement surfaces 10a and 10b are set. In this example, two mirror arrangement surfaces 10a and 10b are arranged with the tower 9 interposed therebetween.
On each mirror arrangement surface 10a, 10b, a plurality of collectors 11 (for example, 400) that reflect sunlight toward the solar heat receiver 100 are arranged (for example, 400).
Each concentrator 11 is a device that condenses light while efficiently reflecting sunlight, and the direction of the concentrator 11 is the sun so that the reflected and condensed sunlight is projected toward the solar heat receiver 100. It is to be controlled according to the movement of.
　太陽熱受熱器１００のケーシング１０１は、タワー９の頂部に配置されており、ケーシング１０１の内壁面には断熱材が施されて断熱壁となっている。このケーシング１０１の内部空間には、鉛直面内で広がる受熱面１０２が設定されている。
　この受熱面１０２に沿って、図４に簡略化して示すように、複数本（例えば５００本）の伝熱管１０３が配置されている。つまり、複数の伝熱管１０３を面状に配列して形成される面を、受熱面１０２としている。各伝熱管１０３内には、圧縮性作動流体が流通する。 The casing 101 of the solar heat receiver 100 is disposed at the top of the tower 9, and a heat insulating material is applied to the inner wall surface of the casing 101 to form a heat insulating wall. In the internal space of the casing 101, a heat receiving surface 102 that extends in a vertical plane is set.
A plurality of (for example, 500) heat transfer tubes 103 are arranged along the heat receiving surface 102 as shown in a simplified manner in FIG. That is, a surface formed by arranging a plurality of heat transfer tubes 103 in a planar shape is a heat receiving surface 102. A compressive working fluid flows through each heat transfer tube 103.
　ケーシング１０１には、２つの太陽光入口１０４ａ，１０４ｂが形成されている。
　太陽光入口１０４ａは、ミラー配置面１０ａに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング１０１内に取り込んで、受熱面１０２の一方の面（図１では左面）に照射させる位置に形成されている。
　太陽光入口１０４ｂは、ミラー配置面１０ｂに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング１０１内に取り込んで、受熱面１０２の他方の面（図１では右面）に照射させる位置に形成されている。 Two sunlight inlets 104 a and 104 b are formed in the casing 101.
The sunlight entrance 104a takes in the sunlight reflected and condensed by the condenser 11 arranged on the mirror arrangement surface 10a into the casing 101 and receives one surface of the heat receiving surface 102 (the left surface in FIG. 1). ) To be irradiated.
The sunlight entrance 104b takes the sunlight reflected and projected by the condenser 11 arranged on the mirror arrangement surface 10b into the casing 101, and the other surface of the heat receiving surface 102 (the right surface in FIG. 1). ) To be irradiated.
　したがって、受熱面１０２の一方の面、即ち受熱面１０２に沿って配置した複数の伝熱管１０３の周面のうち、太陽光入口１０４ａ側の半周面には、太陽光入口１０４ａから取り込んだ太陽光が照射される。同時に、受熱面１０２の他方の面、即ち受熱面１０２に沿って配置した複数の伝熱管１０３の周面のうち、太陽光入口１０４ｂ側の半周面には、太陽光入口１０４ｂから取り込んだ太陽光が照射される。 Therefore, one of the heat receiving surfaces 102, that is, of the peripheral surfaces of the plurality of heat transfer tubes 103 arranged along the heat receiving surface 102, the solar light taken in from the sunlight inlet 104a is formed on the half peripheral surface on the sunlight inlet 104a side. Is irradiated. At the same time, of the other surface of the heat receiving surface 102, that is, the peripheral surface of the plurality of heat transfer tubes 103 arranged along the heat receiving surface 102, sunlight taken in from the solar light inlet 104 b is placed on the half peripheral surface on the solar light inlet 104 b side. Is irradiated.
　この結果、各伝熱管１０３は、一方の側の周面と他方の側の周面、つまり両面（全周面）から加熱される。よって、圧縮性作動流体が流通する伝熱管の周面を均一に加熱することができ、効果的に圧縮性作動流体を加熱することができる。また、伝熱管１０３に作用する熱応力を均一化して伝熱管１０３に作用する応力を全体的に低減することができ、伝熱管１０３の寿命が延びる。
　また１つの受熱面１０２に沿って伝熱管１０３を配置しているため、単純な管配列構造となり、全体的な構成を簡素化することができる。 As a result, each heat transfer tube 103 is heated from the peripheral surface on one side and the peripheral surface on the other side, that is, both surfaces (all peripheral surfaces). Accordingly, the peripheral surface of the heat transfer tube through which the compressive working fluid flows can be heated uniformly, and the compressive working fluid can be effectively heated. Further, the thermal stress acting on the heat transfer tube 103 can be made uniform to reduce the stress acting on the heat transfer tube 103 as a whole, and the life of the heat transfer tube 103 is extended.
Further, since the heat transfer tubes 103 are arranged along one heat receiving surface 102, a simple tube arrangement structure is obtained, and the overall configuration can be simplified.
　実施例１に係る太陽光受熱器１００を具備した太陽熱ガスタービン１によれば、伝熱管内を通過する圧縮性作動流体を一様に加熱することにより、太陽熱受熱器１００からタービン３に送られる圧縮性作動流体の温度が従来よりも上昇することとなるので、タービン効率を従来よりも向上させることができる。 According to the solar gas turbine 1 including the solar heat receiver 100 according to the first embodiment, the compressive working fluid that passes through the heat transfer tube is uniformly heated, and thus is sent from the solar heat receiver 100 to the turbine 3. Since the temperature of the compressive working fluid rises more than before, the turbine efficiency can be improved more than before.
　太陽熱ガスタービン発電装置５によれば、従来よりもタービン効率のよい太陽熱ガスタービン１を具備しており、発電効率が従来よりも上昇することとなるので、エネルギー回収率を向上させることができて、その信頼性を向上させることができる。 According to the solar thermal gas turbine power generation device 5, the solar thermal gas turbine 1 having better turbine efficiency than the conventional one is provided, and the power generation efficiency is higher than before, so that the energy recovery rate can be improved. , Its reliability can be improved.
　本発明の実施例２に係る太陽熱受熱器２００を、図５を参照して説明する。
　太陽熱受熱器２００は、太陽光を熱エネルギーに変換するための装置であり、図５に示すように、地盤８に立設されたタワー９の頂部（例えば、高さ２００ｍのタワー９の先端部）に配置されている。 A solar heat receiver 200 according to Embodiment 2 of the present invention will be described with reference to FIG.
The solar heat receiver 200 is a device for converting sunlight into heat energy, and as shown in FIG. 5, the top of the tower 9 erected on the ground 8 (for example, the tip of the tower 9 having a height of 200 m). ).
　地盤８には、ミラー配置面１０ａ，１０ｂ，１０ｃが設定されている。本例では、平面視で見た時にタワー９を中心とした円周上に、３つのミラー配置面１０ａ，１０ｂ，１０ｃが周方向に隣接して略等間隔に配置されている。
　各ミラー配置面１０ａ，１０ｂ，１０ｃには、太陽熱受熱器２００に向かって、太陽光を反射させる、集光器１１（図３参照）が複数基（例えば、４００基）配置されている。
　各集光器１１は、太陽光を効率良く反射しつつ集光する装置であり、反射・集光した太陽光を太陽熱受熱器２００に向かって投射するように、集光器１１の向きは太陽の移動に合わせて制御されるようになっている。 On the ground 8, mirror arrangement surfaces 10a, 10b, and 10c are set. In this example, three mirror arrangement surfaces 10a, 10b, and 10c are arranged at substantially equal intervals adjacent to each other in the circumferential direction on the circumference centered on the tower 9 when viewed in a plan view.
On each of the mirror arrangement surfaces 10a, 10b, and 10c, a plurality of condensers 11 (for example, 400) that reflect sunlight toward the solar heat receiver 200 are arranged (for example, 400).
Each concentrator 11 is a device that collects sunlight while efficiently reflecting sunlight, and the direction of the concentrator 11 is the sun so that the reflected and condensed sunlight is projected toward the solar heat receiver 200. It is to be controlled according to the movement of.
　太陽熱受熱器２００のケーシング２０１は、タワー９の頂部に配置されており、ケーシング２０１の内壁面には断熱材が施されて断熱壁となっている。このケーシング２０１の内部空間には、鉛直面内で広がる３つの受熱面２０２ａ，２０２ｂ，２０２ｃが設定されている。３つの受熱面２０２ａ，２０２ｂ，２０２ｃは、平面視で見た時にタワー９を中心として放射状に配置（軸対称に配置）されている。
　そして、各受熱面２０２ａ，２０２ｂ，２０２ｃに沿って、複数本（例えば５００本）の伝熱管２０３が配置されている（図４参照）。つまり、複数の伝熱管２０３を面状に配列して形成される面を、受熱面２０２ａ，２０２ｂ，２０２ｃとしている。各伝熱管２０３内には、圧縮性作動流体が流通する。 The casing 201 of the solar heat receiver 200 is disposed at the top of the tower 9, and a heat insulating material is applied to the inner wall surface of the casing 201 to form a heat insulating wall. In the internal space of the casing 201, three heat receiving surfaces 202a, 202b, and 202c that spread in a vertical plane are set. The three heat receiving surfaces 202a, 202b, and 202c are arranged radially (axisymmetrically) with the tower 9 as the center when viewed in plan view.
A plurality of (for example, 500) heat transfer tubes 203 are arranged along each heat receiving surface 202a, 202b, 202c (see FIG. 4). That is, the surfaces formed by arranging the plurality of heat transfer tubes 203 in a plane form are the heat receiving surfaces 202a, 202b, 202c. A compressive working fluid flows through each heat transfer tube 203.
　ケーシング２０１には、３つの太陽光入口２０４ａ，２０４ｂ，２０４ｃが形成されている（但し、太陽光入口２０４ｃは図示されていない）。
　太陽光入口２０４ａは、ミラー配置面１０ａに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング２０１内に取り込んで、受熱面２０２ａの面のうち受熱面２０２ｃに対向する面と、受熱面２０２ｃの面のうち受熱面２０２ａに対向する面に照射させる位置に形成されている。
　太陽光入口２０４ｂは、ミラー配置面１０ｂに配置した集光器１１が反射・集光して投射してきた太陽光を、受熱面２０２ａの面のうち受熱面２０２ｂに対向する面と、受熱面２０２ｂの面のうち受熱面２０２ａに対向する面に照射させる位置に形成されている。
　太陽光入口２０４ｃは、ミラー配置面１０ｃに配置した集光器１１が反射・集光して投射してきた太陽光を、受熱面２０２ｂの面のうち受熱面２０２ｃに対向する面と、受熱面２０２ｃの面のうち受熱面２０２ｂに対向する面に照射させる位置に形成されている。 The casing 201 is formed with three sunlight inlets 204a, 204b, and 204c (however, the sunlight inlet 204c is not shown).
The sunlight entrance 204a captures the sunlight reflected and projected by the condenser 11 arranged on the mirror arrangement surface 10a into the casing 201, and opposes the heat receiving surface 202c among the surfaces of the heat receiving surface 202a. Of the heat receiving surface 202c and the surface facing the heat receiving surface 202a.
The sunlight entrance 204b is a surface of the heat receiving surface 202a facing the heat receiving surface 202b and the heat receiving surface 202b of the sunlight reflected and collected by the condenser 11 disposed on the mirror arrangement surface 10b. Are formed at a position to irradiate the surface facing the heat receiving surface 202a.
The sunlight entrance 204c includes the surface of the heat receiving surface 202b facing the heat receiving surface 202c and the heat receiving surface 202c of the sunlight reflected and collected by the collector 11 disposed on the mirror arrangement surface 10c. Are formed at positions where the surface facing the heat receiving surface 202b is irradiated.
　したがって、受熱面２０２ａの面のうち受熱面２０２ｃに対向した面、即ち受熱面２０２ａに沿って配置した複数の伝熱管２０３の周面のうち、太陽光入口２０４ａ側の半周面には、太陽光入口２０４ａから取り込んだ太陽光が照射される。同時に、受熱面２０２ａの面のうち受熱面２０２ｂに対向した面、即ち受熱面２０２ａに沿って配置した複数の伝熱管２０３の周面のうち、太陽光入口２０４ｂ側の半周面には、太陽光入口２０４ｂから取り込んだ太陽光が照射される。 Accordingly, among the surfaces of the heat receiving surface 202a facing the heat receiving surface 202c, that is, among the peripheral surfaces of the plurality of heat transfer tubes 203 arranged along the heat receiving surface 202a, the solar peripheral wall on the solar inlet 204a side has sunlight. Sunlight taken from the entrance 204a is irradiated. At the same time, out of the surfaces of the heat receiving surface 202a facing the heat receiving surface 202b, that is, among the peripheral surfaces of the plurality of heat transfer tubes 203 disposed along the heat receiving surface 202a, the sun light inlet 204b side has a semi-peripheral surface. Sunlight taken from the entrance 204b is irradiated.
　また、受熱面２０２ｂの面のうち受熱面２０２ａに対向した面、即ち受熱面２０２ｂに沿って配置した複数の伝熱管２０３の周面のうち、太陽光入口２０４ｂ側の半周面には、太陽光入口２０４ｂから取り込んだ太陽光が照射される。同時に、受熱面２０２ｂの面のうち受熱面２０２ｃに対向した面、即ち受熱面２０２ｂに沿って配置した複数の伝熱管２０３の周面のうち、太陽光入口２０４ｃ側の半周面には、太陽光入口２０４ｃから取り込んだ太陽光が照射される。 Further, among the surfaces of the heat receiving surface 202b, the surface facing the heat receiving surface 202a, that is, the peripheral surface of the plurality of heat transfer tubes 203 arranged along the heat receiving surface 202b, the sun light inlet 204b side has a half peripheral surface. Sunlight taken from the entrance 204b is irradiated. At the same time, among the surfaces of the heat receiving surface 202b facing the heat receiving surface 202c, that is, of the peripheral surfaces of the plurality of heat transfer tubes 203 arranged along the heat receiving surface 202b, the solar inlet 204c side has a semi-peripheral surface. Sunlight taken from the entrance 204c is irradiated.
　更に、受熱面２０２ｃの面のうち受熱面２０２ｂに対向した面、即ち受熱面２０２ｃに沿って配置した複数の伝熱管２０３の周面のうち、太陽光入口２０４ｃ側の半周面には、太陽光入口２０４ｃから取り込んだ太陽光が照射される。同時に、受熱面２０２ｃの面のうち受熱面２０２ａに対向した面、即ち受熱面２０２ｃに沿って配置した複数の伝熱管２０３の周面のうち、太陽光入口２０４ａ側の半周面には、太陽光入口２０４ａから取り込んだ太陽光が照射される。 Furthermore, among the surfaces of the heat receiving surface 202c, the surface facing the heat receiving surface 202b, that is, the peripheral surface of the plurality of heat transfer tubes 203 arranged along the heat receiving surface 202c, Sunlight taken from the entrance 204c is irradiated. At the same time, out of the surfaces of the heat receiving surface 202c facing the heat receiving surface 202a, that is, among the peripheral surfaces of the plurality of heat transfer tubes 203 arranged along the heat receiving surface 202c, the sun light inlet 204a side has a half peripheral surface. Sunlight taken from the entrance 204a is irradiated.
　この結果、各受熱面２０２ａ，２０２ｂ，２０２ｃに配置した各伝熱管２０３は、一方の側の周面と他方の側の周面、つまり両面（全周面）から加熱される。よって、圧縮性作動流体が流通する伝熱管の周面を均一に加熱することができ、効果的に圧縮性作動流体を加熱することができる。また、伝熱管２０３に作用する熱応力を均一化して伝熱管２０３に作用する応力を全体的に低減することができ、伝熱管２０３の寿命が延びる。
　また実施例２は、太陽光が略真上から地盤８に向かって照射されてくる、赤道付近の地域に設置することが好適である。 As a result, each heat transfer tube 203 arranged on each heat receiving surface 202a, 202b, 202c is heated from the peripheral surface on one side and the peripheral surface on the other side, that is, both surfaces (all peripheral surfaces). Accordingly, the peripheral surface of the heat transfer tube through which the compressive working fluid flows can be heated uniformly, and the compressive working fluid can be effectively heated. Further, the thermal stress acting on the heat transfer tube 203 can be made uniform to reduce the stress acting on the heat transfer tube 203 as a whole, and the life of the heat transfer tube 203 is extended.
Moreover, it is suitable for Example 2 to install in the area near the equator where sunlight is irradiated toward the ground 8 from substantially right above.
　なお図５に示す実施例では、３枚の受熱面を設定して３つの太陽光入口を備えているが、一般的に言えば、Ｎを３以上の整数としたときに、Ｎ枚の受熱面を設定してＮ個の太陽光入口を備えるようにすることもできる。
　勿論このときにも、Ｎ枚の受熱面を、平面視で見た時にタワーを中心として放射状に設定（軸対称に配置）し、各受熱面に沿って複数の伝熱管を配置し、ケーシングのうち、周方向に関して隣接する受熱面の相対向する面に対して、集光器から投射されてきた太陽光をそれぞれ照射することができる各位置に、Ｎ個の太陽光入口を形成する。 In the embodiment shown in FIG. 5, three heat receiving surfaces are set and three sunlight inlets are provided, but generally speaking, when N is an integer of 3 or more, N heat receiving surfaces are provided. It is also possible to set the surface and provide N sunlight entrances.
Of course, also at this time, the N heat receiving surfaces are set radially (axisymmetrically arranged) around the tower when viewed in plan, and a plurality of heat transfer tubes are arranged along each heat receiving surface. Among them, N sunlight inlets are formed at each position where the sunlight projected from the condenser can be irradiated to the opposing surfaces of the heat receiving surfaces adjacent to each other in the circumferential direction.
　なお、図１に示す構成において、太陽熱受熱器１００の代わりに、実施例２の太陽熱受熱器２００を用いて、太陽熱ガスタービンや太陽熱ガス発電装置を構成することができる。 In the configuration shown in FIG. 1, a solar heat gas turbine or a solar gas generator can be configured using the solar heat receiver 200 of the second embodiment instead of the solar heat receiver 100.
　本発明の実施例３に係る太陽熱受熱器３００を、図６を参照して説明する。
　太陽熱受熱器３００は、太陽光を熱エネルギーに変換するための装置であり、図６に示すように、地盤８に立設されたタワー９の頂部（例えば、高さ３００ｍのタワー９の先端部）に配置されている。 A solar heat receiver 300 according to Embodiment 3 of the present invention will be described with reference to FIG.
The solar heat receiver 300 is a device for converting sunlight into heat energy. As shown in FIG. 6, the top of the tower 9 erected on the ground 8 (for example, the tip of the tower 9 having a height of 300 m). ).
　地盤８には、ミラー配置面１０ａ，１０ｂ，１０ｃ，１０ｄ，１０ｅ，１０ｆが設定されている。本例では、６個のミラー配置面１０ａ，１０ｂ，１０ｃ，１０ｄ，１０ｅ，１０ｆが、相互間隔を明けつつ一列に並んで配置されている。
　各ミラー配置面１０ａ，１０ｂ，１０ｃ，１０ｄ，１０ｅ，１０ｆには、太陽熱受熱器３００に向かって、太陽光を反射させる、集光器１１（図３参照）が複数基（例えば、４００基）配置されている。
　各集光器１１は、太陽光を効率良く反射しつつ集光する装置であり、反射・集光した太陽光を太陽熱受熱器３００に向かって投射するように、集光器１１の向きは太陽の移動に合わせて制御されるようになっている。 On the ground 8, mirror arrangement surfaces 10a, 10b, 10c, 10d, 10e, and 10f are set. In this example, six mirror arrangement surfaces 10a, 10b, 10c, 10d, 10e, and 10f are arranged in a line with a mutual interval therebetween.
Each mirror arrangement surface 10a, 10b, 10c, 10d, 10e, 10f has a plurality of collectors 11 (see FIG. 3) that reflect sunlight toward the solar heat receiver 300 (for example, 400). Is arranged.
Each concentrator 11 is a device that collects sunlight while efficiently reflecting sunlight, and the direction of the concentrator 11 is the sun so that the reflected and condensed sunlight is projected toward the solar heat receiver 300. It is to be controlled according to the movement of.
　太陽熱受熱器３００のケーシング３０１は、タワー９の頂部に配置されており、ケーシング３０１の内壁面には断熱材が施されて断熱壁となっている。このケーシング３０１の内部空間には、鉛直面内で広がる３つの受熱面３０２ａ，３０２ｂ，３０２ｃが設定されている。３つの受熱面３０２ａ，３０２ｂ，３０２ｃは、相互間隔を取りつつ隣接するもの同士が対面する（平行となる）状態で設定されている。
　そして、各受熱面３０２ａ，３０２ｂ，３０２ｃに沿って、複数本（例えば５００本）の伝熱管３０３が配置されている（図４参照）。つまり、複数の伝熱管３０３を面状に配列して形成される面を、受熱面３０２ａ，３０２ｂ，３０２ｃとしている。各伝熱管３０３内には、圧縮性作動流体が流通する。 The casing 301 of the solar heat receiver 300 is disposed at the top of the tower 9, and a heat insulating material is applied to the inner wall surface of the casing 301 to form a heat insulating wall. In the internal space of the casing 301, three heat receiving surfaces 302a, 302b, and 302c that spread in the vertical plane are set. The three heat receiving surfaces 302a, 302b, and 302c are set in a state where adjacent ones face each other (become parallel) while keeping a mutual interval.
A plurality of (for example, 500) heat transfer tubes 303 are arranged along each of the heat receiving surfaces 302a, 302b, and 302c (see FIG. 4). That is, the surfaces formed by arranging a plurality of heat transfer tubes 303 in a planar shape are heat receiving surfaces 302a, 302b, and 302c. A compressive working fluid flows through each heat transfer tube 303.
　ケーシング３０１には、４つの太陽光入口３０４ａ，３０４ｂ，３０４ｃ，３０４ｄが形成されている。 In the casing 301, four sunlight inlets 304a, 304b, 304c, and 304d are formed.
　太陽光入口３０４ａは、ミラー配置面１０ａに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング３０１内に取り込んで、受熱面３０２ａの一方の面（図６では左面）に照射させる位置に形成されている。 The sunlight entrance 304a takes in the casing 301 the sunlight reflected and condensed by the condenser 11 arranged on the mirror arrangement surface 10a and projects one surface of the heat receiving surface 302a (the left surface in FIG. 6). ) To be irradiated.
　太陽光入口３０４ｂは、ミラー配置面１０ｄに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング３０１内に取り込んで、受熱面３０２ａの他方の面（図６では右面）に照射させ、且つ、ミラー配置面１０ｂに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング３０１内に取り込んで、受熱面３０２ｂの一方の面（図６では左面）に照射させる位置に形成されている。 The sunlight entrance 304b takes in sunlight reflected and collected by the condenser 11 arranged on the mirror arrangement surface 10d into the casing 301, and the other surface of the heat receiving surface 302a (the right surface in FIG. 6). ) And reflected by the collector 11 arranged on the mirror arrangement surface 10b and projected from the sunlight is taken into the casing 301, and one surface of the heat receiving surface 302b (in FIG. 6) (Left side) is formed at a position to be irradiated.
　太陽光入口３０４ｃは、ミラー配置面１０ｅに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング３０１内に取り込んで、受熱面３０２ｂの他方の面（図６では右面）に照射させ、且つ、ミラー配置面１０ｃに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング３０１内に取り込んで、受熱面３０２ｃの一方の面（図６では左面）に照射させる位置に形成されている。 The sunlight entrance 304c takes the sunlight reflected and collected by the condenser 11 arranged on the mirror arrangement surface 10e into the casing 301, and the other surface of the heat receiving surface 302b (the right surface in FIG. 6). ) And reflected by the collector 11 arranged on the mirror arrangement surface 10c and projected from the sunlight is taken into the casing 301, and one surface of the heat receiving surface 302c (in FIG. 6) (Left side) is formed at a position to be irradiated.
　太陽光入口３０４ｄは、ミラー配置面１０ｆに配置した集光器１１が反射・集光して投射してきた太陽光を、ケーシング３０１内に取り込んで、受熱面３０２ｂの他方の面（図６では右面）に照射させる位置に形成されている。 The sunlight entrance 304d takes the sunlight reflected and collected by the collector 11 arranged on the mirror arrangement surface 10f into the casing 301, and the other surface of the heat receiving surface 302b (the right surface in FIG. 6). ) To be irradiated.
　したがって、受熱面３０２ａの一方の面、即ち受熱面３０２ａに沿って配置した複数の伝熱管３０３の周面のうち、太陽光入口３０４ａ側の半周面には、太陽光入口３０４ａから取り込んだ太陽光が照射される。同時に、受熱面３０２ａの他方の面、即ち受熱面３０２ａに沿って配置した複数の伝熱管３０３の周面のうち、太陽光入口３０４ｂ側の半周面には、太陽光入口３０４ｂから取り込んだ太陽光が照射される。 Therefore, one of the heat receiving surfaces 302a, that is, of the peripheral surfaces of the plurality of heat transfer tubes 303 arranged along the heat receiving surfaces 302a, the solar light taken in from the sunlight inlet 304a is formed on the half peripheral surface on the sunlight inlet 304a side. Is irradiated. At the same time, of the other surface of the heat receiving surface 302a, that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302a, the solar light taken in from the solar light inlet 304b on the half peripheral surface on the solar light inlet 304b side. Is irradiated.
　また、受熱面３０２ｂの面の一方の面、即ち受熱面３０２ｂに沿って配置した複数の伝熱管３０３の周面のうち、太陽光入口３０４ｂ側の半周面には、太陽光入口３０４ｂから取り込んだ太陽光が照射される。同時に、受熱面３０２ｂの他方の面の、即ち受熱面３０２ｂに沿って配置した複数の伝熱管３０３の周面のうち、太陽光入口３０４ｃ側の半周面には、太陽光入口３０４ｃから取り込んだ太陽光が照射される。 Further, one of the surfaces of the heat receiving surface 302b, that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302b, was taken in from the solar light inlet 304b into the half peripheral surface on the solar light inlet 304b side. Sunlight is irradiated. At the same time, of the other surface of the heat receiving surface 302b, that is, among the peripheral surfaces of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302b, the sun taken in from the solar light inlet 304c is formed on the half peripheral surface on the solar light inlet 304c side. Light is irradiated.
　更に、受熱面３０２ｃの一方の面、即ち受熱面３０２ｃに沿って配置した複数の伝熱管３０３の周面のうち、太陽光入口３０４ｃ側の半周面には、太陽光入口３０４ｃから取り込んだ太陽光が照射される。同時に、受熱面３０２ｃの他方の面、即ち受熱面３０２ｃに沿って配置した複数の伝熱管３０３の周面のうち、太陽光入口３０４ｄ側の半周面には、太陽光入口３０４ｄから取り込んだ太陽光が照射される。 Furthermore, one of the heat receiving surfaces 302c, that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302c, the solar light taken in from the sunlight inlet 304c is formed on the half peripheral surface on the sunlight inlet 304c side. Is irradiated. At the same time, of the other surface of the heat receiving surface 302c, that is, the peripheral surface of the plurality of heat transfer tubes 303 arranged along the heat receiving surface 302c, the solar light taken in from the solar light inlet 304d on the half peripheral surface on the solar light inlet 304d side Is irradiated.
　この結果、各受熱面３０２ａ，３０２ｂ，３０２ｃに配置した各伝熱管３０３は、一方の側の周面と他方の側の周面、つまり両面（全周面）から加熱される。よって、圧縮性作動流体が流通する伝熱管の周面を均一に加熱することができ、効果的に圧縮性作動流体を加熱することができる。また、伝熱管３０３に作用する熱応力を均一化して伝熱管３０３に作用する応力を全体的に低減することができ、伝熱管３０３の寿命が延びる。
　また実施例３は、太陽光が地盤８に向かって斜めに照射されてくる、高緯度の地域に設置することが好適である。
　更に、受熱面を３分割しているため、１枚当たりの受熱面の面積を小さくすることができ、全体の外径寸法を小さくすることができる。 As a result, each heat transfer tube 303 arranged on each heat receiving surface 302a, 302b, 302c is heated from the peripheral surface on one side and the peripheral surface on the other side, that is, both surfaces (all peripheral surfaces). Accordingly, the peripheral surface of the heat transfer tube through which the compressive working fluid flows can be heated uniformly, and the compressive working fluid can be effectively heated. Further, the thermal stress acting on the heat transfer tube 303 can be made uniform to reduce the stress acting on the heat transfer tube 303 as a whole, and the life of the heat transfer tube 303 is extended.
Moreover, it is suitable for Example 3 to install in the area of high latitude where sunlight is irradiated to the ground 8 diagonally.
Furthermore, since the heat receiving surface is divided into three, the area of the heat receiving surface per sheet can be reduced, and the overall outer diameter can be reduced.
　なお図６に示す実施例では、３枚の受熱面を設定して４つの太陽光入口を備えているが、一般的に言えば、Ｍを３以上の整数としたときに、Ｍ枚の受熱面を設定してＭ＋１個の太陽光入口を備えるようにすることもできる。
　勿論このときにも、Ｍ枚の受熱面を相互間隔を取りつつ隣接するもの同士が対面する状態で設定し、各受熱面に沿って複数の熱管を配置し、ケーシングのうち、各受熱面の一方の面及び他方の面に対して、集光器から投射されてきた太陽光をそれぞれ照射することができる各位置に、Ｍ＋１個の太陽光入口を形成する。 In the embodiment shown in FIG. 6, three heat receiving surfaces are set and four sunlight inlets are provided. Generally speaking, when M is an integer of 3 or more, M heat receiving surfaces are provided. It is also possible to set the surface to have M + 1 solar entrances.
Of course, at this time as well, M heat receiving surfaces are set in a state where adjacent ones face each other while being spaced apart from each other, and a plurality of heat tubes are arranged along each heat receiving surface. M + 1 sunlight inlets are formed at each position where the sunlight projected from the collector can be irradiated to one surface and the other surface.
　なお、図１に示す構成において、太陽熱受熱器１００の代わりに、実施例３の太陽熱受熱器３００を用いて、太陽熱ガスタービンや太陽熱ガス発電装置を構成することができる。 In the configuration shown in FIG. 1, a solar heat gas turbine or a solar gas generator can be configured using the solar heat receiver 300 of the third embodiment instead of the solar heat receiver 100.
　８　地盤
　９　タワー
　１０ａ～１０ｆ　ミラー配置面
　１００，２００，３００　太陽光受熱器
　１０１，２０１，３０１　ケーシング
　１０２，２０２ａ～２０２ｃ，３０２ａ～３０２ｃ　受熱面
　１０３，２０３，３０３　伝熱管
　１０４ａ，１０４ｂ，２０４ａ～２０４ｃ，３０４ａ～３０４ｄ　太陽光入口 8 Ground 9 Tower 10a to 10f Mirror arrangement surface 100, 200, 300 Solar heat receiver 101, 201, 301 Casing 102, 202a to 202c, 302a to 302c Heat receiving surface 103, 203, 303 Heat transfer tubes 104a, 104b, 204a to 204c 304a-304d Solar entrance

Claims (3)

  1. 　地盤に立設されたタワーの頂部に配置されると共に、前記地盤に配置された集光器で集められて投射されてきた太陽光を取り込む太陽光入口が形成されたケーシングと、
    　前記ケーシング内に配置されており、前記ケーシング内に取り込まれた太陽光が照射して加熱される複数本の伝熱管と、
    　を備えた太陽光受熱器であって、
    　前記ケーシング内に、鉛直面内で広がる受熱面を設定し、この受熱面に沿って複数の前記伝熱管を配置し、
    　前記ケーシングのうち、前記受熱面の一方の面及び他方の面に対して、前記集光器から投射されてきた太陽光を照射することができる各位置に、前記太陽光入口を形成していることを特徴とする太陽光受熱器。     A casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and
    A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
    A solar heat receiver with
    In the casing, set a heat receiving surface extending in a vertical plane, arrange a plurality of the heat transfer tubes along the heat receiving surface,
    Among the casing, the solar light entrance is formed at each position where the solar light projected from the light collector can be irradiated to one surface and the other surface of the heat receiving surface. A solar heat receiver characterized by that.
  2. 　地盤に立設されたタワーの頂部に配置されると共に、前記地盤に配置された集光器で集められて投射されてきた太陽光を取り込む太陽光入口が形成されたケーシングと、
    　前記ケーシング内に配置されており、前記ケーシング内に取り込まれた太陽光が照射して加熱される複数本の伝熱管と、
    　を備えた太陽光受熱器であって、
    　前記ケーシング内に、鉛直面内で広がる複数の受熱面を、平面視で見た時に前記タワーを中心として放射状に設定し、各受熱面に沿って複数の前記伝熱管を配置し、
    　前記ケーシングのうち、周方向に関して隣接する受熱面の相対向する面に対して、前記集光器から投射されてきた太陽光をそれぞれ照射することができる各位置に、前記太陽光入口を形成していることを特徴とする太陽光受熱器。     A casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and
    A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
    A solar heat receiver with
    In the casing, a plurality of heat receiving surfaces spreading in a vertical plane, when viewed in plan, is set radially with the tower as a center, and a plurality of the heat transfer tubes are arranged along each heat receiving surface,
    The solar light inlet is formed at each position where the solar light projected from the light collector can be irradiated to the opposing surfaces of the heat receiving surfaces adjacent to each other in the circumferential direction in the casing. A solar heat receiver characterized by
  3. 　地盤に立設されたタワーの頂部に配置されると共に、前記地盤に配置された集光器で集められて投射されてきた太陽光を取り込む太陽光入口が形成されたケーシングと、
    　前記ケーシング内に配置されており、前記ケーシング内に取り込まれた太陽光が照射して加熱される複数本の伝熱管と、
    　を備えた太陽光受熱器であって、
    　前記ケーシング内に、鉛直面内で広がる複数の受熱面を相互間隔を取りつつ隣接するもの同士が対面する状態で設定し、各受熱面に沿って複数の前記伝熱管を配置し、
    　前記ケーシングのうち、前記各受熱面の一方の面及び他方の面に対して、前記集光器から投射されてきた太陽光をそれぞれ照射することができる各位置に、前記太陽光入口を形成していることを特徴とする太陽光受熱器。     A casing formed with a solar light inlet that is arranged at the top of a tower erected on the ground and takes in sunlight that has been collected and projected by a light collector disposed on the ground, and
    A plurality of heat transfer tubes disposed in the casing and heated by irradiation with sunlight taken into the casing;
    A solar heat receiver with
    In the casing, a plurality of heat receiving surfaces spreading in a vertical plane are set in a state where adjacent ones face each other while taking a mutual interval, and a plurality of the heat transfer tubes are arranged along each heat receiving surface,
    The solar light inlet is formed at each position where the sunlight projected from the light collector can be irradiated to one surface and the other surface of the heat receiving surfaces of the casing. A solar heat receiver characterized by
PCT/JP2011/071186 2011-09-16 2011-09-16 Solar heat receiver WO2013038555A1 (en)

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Application Number Priority Date Filing Date Title
PCT/JP2011/071186 WO2013038555A1 (en) 2011-09-16 2011-09-16 Solar heat receiver

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Application Number Priority Date Filing Date Title
PCT/JP2011/071186 WO2013038555A1 (en) 2011-09-16 2011-09-16 Solar heat receiver

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122945A (en) * 1974-03-11 1975-09-26
JPS5893740U (en) * 1981-12-18 1983-06-25 リツカ−株式会社 solar collector
US20090241939A1 (en) * 2008-02-22 2009-10-01 Andrew Heap Solar Receivers with Internal Reflections and Flux-Limiting Patterns of Reflectivity
US20110005513A1 (en) * 2007-08-27 2011-01-13 Mills David R Linear fresnel solar arrays
JP2011094820A (en) * 2009-10-27 2011-05-12 Mitsubishi Heavy Ind Ltd Solar photoconcentrating receiver system
JP2011220557A (en) * 2010-04-06 2011-11-04 Mitsubishi Heavy Ind Ltd Solar heat receiver

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122945A (en) * 1974-03-11 1975-09-26
JPS5893740U (en) * 1981-12-18 1983-06-25 リツカ−株式会社 solar collector
US20110005513A1 (en) * 2007-08-27 2011-01-13 Mills David R Linear fresnel solar arrays
US20090241939A1 (en) * 2008-02-22 2009-10-01 Andrew Heap Solar Receivers with Internal Reflections and Flux-Limiting Patterns of Reflectivity
JP2011094820A (en) * 2009-10-27 2011-05-12 Mitsubishi Heavy Ind Ltd Solar photoconcentrating receiver system
JP2011220557A (en) * 2010-04-06 2011-11-04 Mitsubishi Heavy Ind Ltd Solar heat receiver

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