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JP2010085079A - Sunlight thermal converting device - Google Patents

Sunlight thermal converting device Download PDF

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JP2010085079A
JP2010085079A JP2009202714A JP2009202714A JP2010085079A JP 2010085079 A JP2010085079 A JP 2010085079A JP 2009202714 A JP2009202714 A JP 2009202714A JP 2009202714 A JP2009202714 A JP 2009202714A JP 2010085079 A JP2010085079 A JP 2010085079A
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heat
carbon material
black carbon
tin
melting point
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JP5417090B2 (en
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Katsushige Nakamura
勝重 中村
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Mitaka Kohki Co Ltd
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    • 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
    • F24S20/30—Solar heat collectors for heating objects, e.g. solar cookers or solar furnaces
    • 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
    • F24S23/79—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with spaced and opposed interacting reflective surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/10—Details of absorbing elements characterised by the absorbing material
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sunlight thermal converting device capable of efficiently converting sunlight into heat. <P>SOLUTION: A black carbon material 10 is floated on a surface of tin 7 as a heat medium of low-melting point held on a heat-resistant container 6. Since the black carbon material 10 receives the sunlight L, an absorption rate of the sunlight L is high. Since the sunlight L can be efficiently converted into heat by the black carbon material 10, and the tin 7 is melted by the heat, a prescribed amount of a heat source can be formed there. Though the black carbon material 10 generally ia burnt at a high temperature in air, it is not burnt in the device since the device has a nitrogen gas atmosphere. As the tin 7 is melted to be a liquid heat source, any form can be taken according to the shape of the heat-resistant container 6, and the tin can be easily utilized as heat. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は太陽光線熱変換装置に関するものである。   The present invention relates to a solar heat conversion apparatus.

太陽光線をヘリオスタットと称される複数の反射ミラーで、高いタワーの頂部に支持されたセンターミラーへ向けて反射し、センターミラーから下向きに反射された太陽光線を一点に集めて熱を得るビームダウン式の太陽集光装置が知られている（例えば、特許文献１参照）。   A beam that reflects sunlight toward a center mirror supported by the top of a high tower with a plurality of reflecting mirrors called heliostats, and collects the sun rays reflected downward from the center mirror at one point to obtain heat. A down-type solar condensing device is known (for example, see Patent Document 1).

この種のビームダウン構造の場合、下向きに反射された太陽光線で金属製のコイル等を直接加熱し、内部に循環した水を水蒸気に変換したりするのが一般的である。   In the case of this type of beam-down structure, it is common to directly heat a metal coil or the like with sunlight reflected downward to convert water circulated inside into water vapor.

特開平１１−１１９１０５号公報JP-A-11-119105

しかしながら、従来のように、太陽光線で金属コイルを直接加熱する構造では、金属コイルの表面の金属色により太陽光線が反射され、効率の良い熱変換を行うことができない。金属コイルの表面は太陽光線により高温になるため、表面に黒色塗装を施しても剥がれやすい。   However, in the conventional structure in which the metal coil is directly heated by sunlight, the sunlight is reflected by the metal color on the surface of the metal coil, and efficient heat conversion cannot be performed. Since the surface of the metal coil is heated by sunlight, it is easily peeled off even if the surface is painted black.

本発明は、このような従来の技術に着目してなされたものであり、太陽光線を効率良く熱に変換することができる太陽光線熱変換装置を提供するものである。   This invention is made paying attention to such a prior art, and provides the solar ray heat conversion apparatus which can convert a solar ray efficiently into heat.

請求項１記載の発明は、上部開放型の耐熱容器内に低融点熱媒体を保持し、耐熱容器の上部を耐熱透明ガラスでカバーすると共に、耐熱透明ガラスと低融点熱媒体との間の空間を希ガス雰囲気又は真空雰囲気にし、低融点熱媒体の表面に黒色炭素材料を浮かべた構造であって、下向きに反射された太陽光線を耐熱透明ガラスを介して黒色炭素材料で受光することを特徴とする。   According to the first aspect of the present invention, a low melting point heat medium is held in an open top heat resistant container, the upper part of the heat resistant container is covered with heat resistant transparent glass, and a space between the heat resistant transparent glass and the low melting point heat medium is provided. Is a structure in which a black carbon material is floated on the surface of a low melting point heat medium in a rare gas atmosphere or a vacuum atmosphere, and sunlight reflected downward is received by the black carbon material through a heat-resistant transparent glass. And

請求項２記載の発明は、低融点熱媒体が、錫、鉛、半田の何れかの低融点金属であることを特徴とする。   The invention described in claim 2 is characterized in that the low melting point heat medium is a low melting point metal of any one of tin, lead and solder.

請求項３記載の発明は、低融点熱媒体が、溶融塩であることを特徴とする。   The invention described in claim 3 is characterized in that the low melting point heat medium is a molten salt.

請求項４記載の発明は、希ガスが窒素ガスであることを特徴とする。   The invention according to claim 4 is characterized in that the rare gas is nitrogen gas.

請求項５記載の発明は、黒色炭素材料が粉状であることを特徴とする。   The invention according to claim 5 is characterized in that the black carbon material is powdery.

請求項６記載の発明は、黒色炭素材料が固体であることを特徴とする。   The invention described in claim 6 is characterized in that the black carbon material is solid.

請求項７記載の発明は、黒色炭素材料が板状であることを特徴とする。   The invention according to claim 7 is characterized in that the black carbon material is plate-shaped.

請求項８記載の発明は、低融点金属内に熱交換用のパイプが設けられていることを特徴とする。   The invention described in claim 8 is characterized in that a pipe for heat exchange is provided in the low melting point metal.

請求項１記載の発明によれば、低融点熱媒体の表面に黒色炭素材料を浮かべ、その黒色炭素材料が太陽光線を受けるため、太陽光線の吸収率が高い。従って、黒色炭素材料により太陽光線は効率良く熱に変換され、その熱により低融点熱媒体が溶解するため、所定の量の熱源をそこに形成することができる。黒色炭素材料は一般大気中では高温で燃焼するが、本装置では希ガス雰囲気又は真空雰囲気のため、燃焼することはない。低融点熱媒体は、溶解して液状の熱源となるため、耐熱容器の形状に応じていかなる形態をとることも可能で、熱交換も容易であり、熱として利用し易い。   According to the first aspect of the present invention, the black carbon material is floated on the surface of the low-melting-point heat medium, and the black carbon material receives sunlight, so that the absorption rate of sunlight is high. Therefore, sunlight is efficiently converted into heat by the black carbon material, and the low melting point heat medium is dissolved by the heat, so that a predetermined amount of heat source can be formed therein. The black carbon material burns at a high temperature in the general atmosphere, but in this apparatus, it does not burn because it is a rare gas atmosphere or a vacuum atmosphere. Since the low-melting-point heat medium dissolves to become a liquid heat source, it can take any form depending on the shape of the heat-resistant container, heat exchange is easy, and it is easy to use as heat.

請求項２記載の発明によれば、低融点熱媒体が、錫、鉛、半田の何れかの低融点金属であるため、高い温度の液状熱源が得られる。   According to the invention described in claim 2, since the low melting point heat medium is a low melting point metal of tin, lead, or solder, a high temperature liquid heat source can be obtained.

請求項３記載の発明によれば、低融点熱媒体が溶融塩であるため、コストの面で有利であり、装置の大型化が容易である。   According to the invention described in claim 3, since the low melting point heat medium is a molten salt, it is advantageous in terms of cost, and the apparatus can be easily enlarged.

請求項４記載の発明によれば、希ガスが窒素ガスのため、コストの面で有利である。   According to the invention of claim 4, since the rare gas is nitrogen gas, it is advantageous in terms of cost.

請求項５記載の発明によれば、黒色炭素材料が粉状であるため、低融点熱媒体の表面を隙間なく覆うことができる。   According to the invention described in claim 5, since the black carbon material is powdery, the surface of the low melting point heat medium can be covered without any gap.

請求項６及び７記載の発明によれば、黒色炭素材料が板状等の固体であるため、黒色炭素材料が取り扱い易い。   According to invention of Claim 6 and 7, since black carbon material is solid, such as plate shape, black carbon material is easy to handle.

請求項８記載の発明によれば、低融点熱媒体内に熱交換用のパイプが設けられているため、パイプは溶解した低融点熱媒体と隙間なく接し、低融点熱媒体とパイプとの間の熱交換効率が高い。   According to the eighth aspect of the invention, since the heat exchange pipe is provided in the low melting point heat medium, the pipe is in contact with the melted low melting point heat medium without any gap, and between the low melting point heat medium and the pipe. High heat exchange efficiency.

本発明の第１実施形態に係る太陽光線熱変換装置を適用した太陽集光装置を示す概略図。BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows the solar condensing device to which the solar radiation heat conversion apparatus which concerns on 1st Embodiment of this invention is applied. 熱変換装置を示す断面図。Sectional drawing which shows a heat converter. 黒色炭素材料を錫の表面に浮かべた状態を示す断面図。Sectional drawing which shows the state which floated the black carbon material on the surface of tin. 本発明の第２実施形態に係る黒色炭素材料を錫の表面に浮かべた状態を示す断面図。Sectional drawing which shows the state which floated the black carbon material which concerns on 2nd Embodiment of this invention on the surface of tin.

（第１実施形態）
図１〜図３は、本発明の第１実施形態を示す図である。符号１は楕円鏡で、支持タワー２により所定の高さ位置に下向き状態で設置されている。楕円鏡１はその鏡面形状が楕円体の一部で、下方には、第１焦点Ａと、第２焦点Ｂが存在する。この楕円鏡１の下方には、太陽光線Ｌを熱エネルギーに変換するための熱変換装置３が設置されており、該熱変換装置３の上部には、テーパ筒状の集光鏡４が設置されている。そして、熱変換装置３の周囲の地上には、楕円鏡１を取り囲んだ状態で、多数のヘリオスタット５が設けられている。 (First embodiment)
1-3 is a figure which shows 1st Embodiment of this invention. Reference numeral 1 denotes an elliptical mirror, which is installed in a downward state at a predetermined height by a support tower 2. The elliptical mirror 1 has a mirror surface that is part of an ellipsoid, and a first focal point A and a second focal point B exist below. Below the elliptical mirror 1, a heat conversion device 3 for converting the sunlight L into heat energy is installed, and above the heat conversion device 3, a tapered cylindrical condensing mirror 4 is installed. Has been. A large number of heliostats 5 are provided on the ground around the heat conversion device 3 so as to surround the elliptical mirror 1.

各ヘリオスタット５は、反射された太陽光線Ｌが第１焦点Ａを通過するように図示せぬセンサーにより制御される。ヘリオスタット５で反射された太陽光線Ｌが第１焦点Ａを通過しさえすれば、楕円鏡１で下向きに反射されて、必ず第２焦点Ｂに集光され、集光鏡４を経由して熱変換装置３に到達する。   Each heliostat 5 is controlled by a sensor (not shown) so that the reflected sunlight L passes through the first focal point A. As long as the sunlight L reflected by the heliostat 5 passes through the first focal point A, it is reflected downward by the elliptical mirror 1, and is always collected at the second focal point B, via the condenser mirror 4. The heat conversion device 3 is reached.

次に、熱変換装置３の説明をする。   Next, the heat conversion apparatus 3 will be described.

鉄製の耐熱容器６は上部開放型で、内部には低融点熱媒体としての錫７が保持されている。耐熱容器６の周囲は耐火レンガ８により囲まれており、耐熱容器６の熱が外部へ逃げないようにされている。耐火レンガ８の周囲を更にＡＬＣ（軽量気泡コンクリート）で囲んでも良いし、耐火レンガ８に代えてＡＬＣを利用しても良い。   The heat-resistant container 6 made of iron is an open top type, and tin 7 as a low melting point heat medium is held inside. The periphery of the heat-resistant container 6 is surrounded by refractory bricks 8 so that the heat of the heat-resistant container 6 does not escape to the outside. The refractory brick 8 may be further surrounded by ALC (lightweight cellular concrete), or ALC may be used instead of the refractory brick 8.

耐熱容器６の上部は耐熱透明ガラス９によりカバーされ、錫７と耐熱透明ガラス９との空間Ｓには窒素ガスが充満されている。窒素ガスは空間Ｓの一方の図示せぬ入口から少量ずつ供給され且つ他方の図示せぬ出口から少量ずつ排出され、常に窒素ガスが充満した状態になっている。空間Ｓは窒素ガス以外の希ガス（例えばアルゴン）を充満させても良い。また、空間Ｓ内を真空にしても良い。   The upper part of the heat-resistant container 6 is covered with a heat-resistant transparent glass 9, and the space S between the tin 7 and the heat-resistant transparent glass 9 is filled with nitrogen gas. Nitrogen gas is supplied little by little from one inlet (not shown) of the space S and discharged little by little from the other outlet (not shown), so that the nitrogen gas is always filled. The space S may be filled with a rare gas other than nitrogen gas (for example, argon). Further, the space S may be evacuated.

錫７の表面には、粉末状の黒色炭素材料（カーボン）１０が浮かべた状態で設けられている。黒色炭素材料１０の方が錫７よりも比重が小さいため、必ず錫７の表面に浮かんだ状態となり、錫７の内部へ沈下することはない。黒色炭素材料１０の粉体は所定の厚さで錫７の表面全体を覆っている。   A powdery black carbon material (carbon) 10 is floated on the surface of the tin 7. Since the specific gravity of the black carbon material 10 is smaller than that of the tin 7, the black carbon material 10 always floats on the surface of the tin 7 and does not sink into the tin 7. The powder of the black carbon material 10 covers the entire surface of the tin 7 with a predetermined thickness.

耐熱容器６の内部には、錫７を蛇行しながら通過する熱交換用のパイプ１１が設けられている。パイプ１１内には、一方側から水Ｗが供給されるようになっている。   Inside the heat-resistant container 6, a heat exchange pipe 11 that passes through the tin 7 while meandering is provided. Water W is supplied into the pipe 11 from one side.

以上のような熱変換装置３に対して、下向きに反射された太陽光線Ｌが照射されると、太陽光線Ｌは耐熱透明ガラス９を透過して黒色炭素材料１０に受光される。黒色炭素材料１０が黒色のため、高い吸収率（約９５％）で吸収され熱に変換される。黒色炭素材料１０は熱伝導率が良いため、変換された熱は錫７に伝達される。温度が融点（２３２°Ｃ）に達すると、錫７は溶解して液状になる。黒色炭素材料１０が粉体であるため、錫７の表面を浮遊して隙間なく覆うことができ、太陽光線Ｌを効率良く熱に変換することができる。また、局所的な対流等により粉体のムラができて錫７の表面の一部が露出した場合には、その部分の熱吸収効率が低下して対流を抑制する作用が機能するため一様な粉体の分布を維持することができる。   When the sunlight rays L reflected downward are irradiated to the heat conversion device 3 as described above, the sunlight rays L pass through the heat-resistant transparent glass 9 and are received by the black carbon material 10. Since the black carbon material 10 is black, it is absorbed at a high absorption rate (about 95%) and converted to heat. Since the black carbon material 10 has good thermal conductivity, the converted heat is transferred to the tin 7. When the temperature reaches the melting point (232 ° C.), the tin 7 dissolves and becomes liquid. Since the black carbon material 10 is a powder, the surface of the tin 7 can be floated and covered without a gap, and the sunlight L can be efficiently converted into heat. Further, when unevenness of the powder is caused by local convection or the like and a part of the surface of the tin 7 is exposed, the heat absorption efficiency of the portion is lowered and the function of suppressing the convection functions so that it is uniform. A fine powder distribution can be maintained.

黒色炭素材料１０は大気中では高温になると燃焼して酸化するが、熱変換装置３では窒素ガス雰囲気中のため、燃焼することはない。尚、真空雰囲気にした場合も、黒色炭素材料１０の燃焼は防止される。   The black carbon material 10 burns and oxidizes at high temperatures in the atmosphere, but does not burn in the heat conversion device 3 because it is in a nitrogen gas atmosphere. Even in a vacuum atmosphere, the black carbon material 10 is prevented from burning.

錫７が溶解することにより、錫７は所定の量の熱源となり、錫７の中に設けられたパイプ１１を通過する水Ｗを水蒸気Ｖに変換して、他方側より排出する。排出された水蒸気Ｖによりタービンを回して発電することができる。特に、溶解した錫７は濡れ性にすぐれパイプ１１に対して隙間なく接するため、錫７とパイプ１１との間の熱交換効率が良く、錫７の熱により効率良く水蒸気Ｖを発生させることができる。   As the tin 7 is dissolved, the tin 7 becomes a heat source of a predetermined amount, and the water W passing through the pipe 11 provided in the tin 7 is converted into the water vapor V and discharged from the other side. Power can be generated by rotating the turbine with the discharged steam V. In particular, since the dissolved tin 7 is excellent in wettability and comes into contact with the pipe 11 without a gap, the heat exchange efficiency between the tin 7 and the pipe 11 is good, and the steam V can be efficiently generated by the heat of the tin 7. it can.

錫７は、溶解して液状の熱源となるため、耐熱容器の形状に応じていかなる形態をとることも可能で、溶解した錫７を熱移動流体として、他の装置に循環することもできる。   Since the tin 7 dissolves to become a liquid heat source, it can take any form depending on the shape of the heat-resistant container, and the dissolved tin 7 can be circulated as a heat transfer fluid to other devices.

また、パイプ１１内に熱移動流体として空気を通過させても良い。パイプ１１を通過した空気は高温となり、他の装置に循環することにより、その装置に錫７の熱を移動させることができる。   Further, air may be passed through the pipe 11 as a heat transfer fluid. The air that has passed through the pipe 11 becomes hot and circulates to another device, whereby the heat of the tin 7 can be transferred to that device.

更に、低融点熱媒体として、錫７の代わりに、鉛、半田等の低融点金属を使用することも可能である。また、黒色炭素材料１０としては、通常のカーボンだけでなく、いわゆるカーボンナノチューブも含む。   Further, a low melting point metal such as lead or solder can be used as the low melting point heat medium instead of tin 7. The black carbon material 10 includes not only normal carbon but also so-called carbon nanotubes.

（第２実施形態）
図４は、本発明の第２実施形態を示す図である。本実施形態は、前記第１実施形態と同様の構成要素を備えている。よって、それら同様の構成要素については共通の符号を付すとともに、重複する説明を省略する。 (Second Embodiment)
FIG. 4 is a diagram showing a second embodiment of the present invention. This embodiment includes the same components as those in the first embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

この実施形態では、低融点熱媒体として、錫７に代えて溶融塩１３を利用した。溶融塩１３は、硝酸カリウムと硝酸ナトリウムの混合物で、融点である約１４０°Ｃ程度で液状になる。溶融塩１３の表面に板状に成形した黒色炭素材料１２を複数浮かべた。黒色炭素材料１２が板状に成形された固体であるため、黒色炭素材料１２の取り扱いが容易である。板状の黒色炭素材料１２の形状はいかなる形状でも良い。また、板状の他にも、複数のボール状、或いは繊維状の固体にして浮かべても良い。   In this embodiment, a molten salt 13 is used in place of the tin 7 as the low melting point heat medium. The molten salt 13 is a mixture of potassium nitrate and sodium nitrate and becomes liquid at about 140 ° C., which is the melting point. A plurality of black carbon materials 12 formed into a plate shape were floated on the surface of the molten salt 13. Since the black carbon material 12 is a solid formed into a plate shape, the black carbon material 12 can be easily handled. The shape of the plate-like black carbon material 12 may be any shape. In addition to the plate shape, it may be floated in the form of a plurality of balls or fibers.

溶融塩１３は、それだけを使用しても良いし、加熱しても溶解しない固体蓄熱材を混ぜて使用しても良い。   The molten salt 13 may be used alone or in combination with a solid heat storage material that does not dissolve even when heated.

１ 楕円鏡
２ 支持タワー
３ 熱変換装置
４ 集光鏡
５ ヘリオスタット
６ 耐熱容器
７ 錫（低融点熱媒体）
８ 耐火レンガ
９ 耐熱透明ガラス
１０ 黒色炭素材料
１１ パイプ
１２ 黒色炭素材料
１３ 溶融塩（低融点熱媒体）
Ａ 第１焦点
Ｂ 第２焦点
Ｌ 太陽光線
Ｓ 空間
Ｗ 水
Ｖ 水蒸気 DESCRIPTION OF SYMBOLS 1 Elliptical mirror 2 Support tower 3 Heat conversion apparatus 4 Condensing mirror 5 Heliostat 6 Heat-resistant container 7 Tin (low melting-point heat medium)
8 Fire brick 9 Heat resistant transparent glass 10 Black carbon material 11 Pipe 12 Black carbon material 13 Molten salt (low melting point heat medium)
A 1st focus B 2nd focus L Sun rays S Space W Water V Water vapor

Claims (8)

上部開放型の耐熱容器内に低融点熱媒体を保持し、
耐熱容器の上部を耐熱透明ガラスでカバーすると共に、耐熱透明ガラスと低融点熱媒体との間の空間を希ガス雰囲気又は真空雰囲気にし、
低融点熱媒体の表面に黒色炭素材料を浮かべた構造であって、
下向きに反射された太陽光線を耐熱透明ガラスを介して黒色炭素材料で受光することを特徴とする太陽光線熱変換装置。 Hold the low-melting-point heat medium in an open top heat-resistant container,
Cover the top of the heat-resistant container with heat-resistant transparent glass, and make the space between the heat-resistant transparent glass and the low melting point heat medium a rare gas atmosphere or a vacuum atmosphere,
A structure in which a black carbon material is floated on the surface of a low melting point heat medium,
A solar ray heat conversion device characterized by receiving sunlight reflected downward by a black carbon material through a heat-resistant transparent glass. 低融点熱媒体が、錫、鉛、半田の何れかの低融点金属であることを特徴とする請求項１記載の太陽光線熱変換装置。   The solar light heat conversion device according to claim 1, wherein the low melting point heat medium is a low melting point metal of tin, lead, or solder. 低融点熱媒体が、溶融塩であることを特徴とする請求項１記載の太陽光線熱変換装置。   The solar heat converter according to claim 1, wherein the low-melting-point heat medium is a molten salt. 希ガスが窒素ガスであることを特徴とする請求項１〜３のいずれか１項に記載の太陽光線熱変換装置。   The solar radiation heat conversion apparatus according to any one of claims 1 to 3, wherein the rare gas is nitrogen gas. 黒色炭素材料が粉体であることを特徴とする請求項１〜４のいずれか１項に記載の太陽光線熱変換装置。   The solar carbon heat conversion device according to any one of claims 1 to 4, wherein the black carbon material is powder. 黒色炭素材料が固体であることを特徴とする請求項１〜４のいずれか１項に記載の太陽光線熱変換装置。   The solar carbon heat conversion apparatus according to any one of claims 1 to 4, wherein the black carbon material is solid. 黒色炭素材料が板状であることを特徴とする請求項６記載の太陽光線熱変換装置。   The solar radiation heat conversion apparatus according to claim 6, wherein the black carbon material is plate-shaped. 低融点熱媒体内に熱交換用のパイプが設けられていることを特徴とする請求項１〜７のいずれか１項に記載の太陽光線熱変換装置。   The solar radiation heat conversion apparatus according to any one of claims 1 to 7, wherein a pipe for heat exchange is provided in the low melting point heat medium.
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CN103629827A (en) * 2013-12-11 2014-03-12 青海大学 Large-capacity well type solar heat collection-storage device
JP2015049015A (en) * 2013-09-04 2015-03-16 日立造船株式会社 Collector
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