JPH0727424A - Solar heat collector for light heat power generation - Google Patents
Solar heat collector for light heat power generationInfo
- Publication number
- JPH0727424A JPH0727424A JP5169921A JP16992193A JPH0727424A JP H0727424 A JPH0727424 A JP H0727424A JP 5169921 A JP5169921 A JP 5169921A JP 16992193 A JP16992193 A JP 16992193A JP H0727424 A JPH0727424 A JP H0727424A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- heat
- light
- heat absorber
- power generation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光熱発電用集熱装置に
関するものであり、特に、宇宙空間で使用する太陽熱発
電に適用すると有効なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat collector for photothermal power generation, and is particularly effective when applied to solar thermal power generation used in outer space.
【０００２】[0002]
【従来の技術】発電に用いられる熱源の中でも、太陽熱
は、量的に豊富で無公害であるため、今後の中心となる
熱エネルギとして、かなり検討されており、特に、宇宙
空間での熱源としては最適なものである。2. Description of the Related Art Among heat sources used for power generation, solar heat is abundant in quantity and is non-polluting. Therefore, it has been considerably studied as a heat energy which will be the center of the future, especially as a heat source in outer space. Is the best one.
【０００３】このような太陽熱発電設備の一例を図６に
示す。太陽光１０１はパラボラ型の反射鏡２１に入射す
ると、熱吸収器２２の開口部２２ａへ向けて反射され、
熱吸収器２２内を流通するヘリウムなどの熱媒ガスを加
熱する。加熱された熱媒ガスは、ブロア２３により配管
２４内を通ってガスタービンなどの熱機関２５内に送り
込まれて発電作用を行い、再び熱吸収器２２へ送られ
る。これらを繰り返すことにより、連続して発電するこ
とができる。FIG. 6 shows an example of such a solar thermal power generation facility. When the sunlight 101 enters the parabolic reflector 21, it is reflected toward the opening 22a of the heat absorber 22,
A heat medium gas such as helium flowing in the heat absorber 22 is heated. The heated heat medium gas is sent into the heat engine 25 such as a gas turbine through the pipe 24 by the blower 23 to generate electricity, and is again sent to the heat absorber 22. By repeating these, it is possible to continuously generate power.
【０００４】[0004]
【発明が解決しようとする課題】前述したような太陽熱
発電設備は、熱吸収器２２内に入射した太陽光１０１が
外部へ漏出しないよう開口部２２ａの面積を極力小さく
する必要がある。これに伴い、太陽光１０１の反射鏡２
１による反射光の焦点面積も極力小さくし、開口部２２
ａに対応するよう高い精度で開口部２２ａへ向けて反射
しなければならない。In the solar thermal power generation facility as described above, it is necessary to make the area of the opening 22a as small as possible so that the sunlight 101 entering the heat absorber 22 does not leak outside. Along with this, the reflector 2 of the sunlight 101
The focal area of the reflected light by 1 is also made as small as possible, and the opening 22
It must reflect toward the opening 22a with high accuracy to correspond to a.
【０００５】このため、このような太陽熱発電設備を宇
宙空間で使用する場合には、反射鏡２１の焦点が熱吸収
器２２の開口部２２ａに一致するようこれらの装置を宇
宙空間で組み立て・調整しなければならず、非常に困難
な作業となっている。また、焦点調整が充分に行われて
も、これらの装置の部材は、非常に薄厚な材料を用いて
いるため、経時変形を起こし易く、すぐに焦点がずれて
しまい、集熱効率が低下するばかりか、焦点のずれた反
射光が熱吸収器２２の外壁などに照射して、熱吸収器２
２を溶融してしまう。Therefore, when such a solar thermal power generation facility is used in outer space, these devices are assembled and adjusted in outer space so that the focal point of the reflecting mirror 21 coincides with the opening 22a of the heat absorber 22. Has to be done, which is a very difficult task. In addition, even if the focus is adjusted sufficiently, the members of these devices are made of a very thin material, so that they are apt to be deformed with time, and the focus is immediately deviated, so that the heat collection efficiency is lowered. Alternatively, the defocused reflected light irradiates the outer wall of the heat absorber 22 or the like, and the heat absorber 2
Melts 2.
【０００６】[0006]
【課題を解決するための手段】前述した課題を解決する
ため、本発明は、反射鏡で反射された光を採光する開口
部が形成されると共に当該開口部から採光した光で熱媒
を加熱する熱吸収器を備えた光熱発電用集熱装置におい
て、前記反射鏡からの光を集光する筒状の集光フードを
前記熱吸収器の前記開口部へ連通させて設け、この集光
フードの前記反射鏡側の端面を前記熱吸収器の前記開口
部よりも開口面積の大きい受入口とし、当該集光フード
の内周面を前記受入口からの光が前記開口部へ向かって
反射するよう放物面状の反射面としたのである。In order to solve the above-mentioned problems, the present invention is to form an opening for collecting the light reflected by a reflecting mirror and heat the heat medium with the light collected from the opening. In a heat collecting device for photothermal power generation having a heat absorber, a cylindrical light collecting hood that collects light from the reflecting mirror is provided in communication with the opening of the heat absorber. The end surface of the reflection mirror side is a receiving opening having a larger opening area than the opening of the heat absorber, and the inner peripheral surface of the light collecting hood reflects light from the receiving entrance toward the opening. The parabolic reflective surface is used.
【０００７】[0007]
【作用】前述した構成による光熱発電用集熱装置では、
反射鏡で反射された光が集光フードの受入口へ入射する
と、光は、集光フードの内周面を反射しながら熱吸収器
の開口部を通って熱吸収器の内部へ入射する。この集光
フードの受入口は、熱吸収器の開口部よりも開口面積が
大きく、集光フードの内周面は、放物面状の反射面であ
るので、熱吸収器の開口部に対して反射鏡の焦点がずれ
たり拡大したりしても、反射鏡からの光は、集光フード
で集光されて熱吸収器の内部へ送られる。In the heat collecting device for photothermal power generation having the above-mentioned structure,
When the light reflected by the reflecting mirror enters the inlet of the light collecting hood, the light enters the inside of the heat absorber through the opening of the heat absorber while reflecting on the inner peripheral surface of the light collecting hood. Since the receiving area of this light collecting hood has a larger opening area than the opening of the heat absorber and the inner peripheral surface of the light collecting hood is a parabolic reflection surface, Even if the focal point of the reflecting mirror deviates or expands, the light from the reflecting mirror is condensed by the condensing hood and sent to the inside of the heat absorber.
【０００８】[0008]
【実施例】本発明による光熱発電用集熱装置を太陽熱発
電設備に適用した場合の一実施例を図１〜３に基づいて
説明する。なお、図１には、その主要部断面概略構造を
示し、図２には、図１のII−II線矢視断面を示し、図３
には、図１のIII-III 線矢視断面を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the heat collecting device for photothermal power generation according to the present invention is applied to a solar thermal power generation facility will be described with reference to FIGS. Note that FIG. 1 shows a schematic structure of a cross section of a main part thereof, FIG. 2 shows a cross section taken along line II-II of FIG.
3 shows a cross section taken along the line III-III in FIG.
【０００９】これらの図に示すように、円筒状をなす熱
吸収器１の一端面側には、太陽光１０１を採光する丸穴
の開口部１ａが同軸をなして形成されている。熱吸収器
１の内周面には、太陽光１０１の太陽熱を吸収する吸熱
管２ａが熱吸収器１の長手方向に沿って複数布設されて
いる。これら吸熱管２ａの内部には、ヘリウムガスなど
の熱媒を流通させる熱媒管２ｂが複数布設されている。
これら熱媒管２ｂは、図示しないブロアを介してガスタ
ービンなどの図示しない熱機関に連結されており、熱媒
は、熱吸収器１と熱機関との間を循環するようになって
いる。As shown in these figures, a circular hole opening 1a for collecting sunlight 101 is coaxially formed on one end surface side of the heat absorber 1 having a cylindrical shape. On the inner peripheral surface of the heat absorber 1, a plurality of heat absorption tubes 2 a that absorb the solar heat of the sunlight 101 are laid along the longitudinal direction of the heat absorber 1. Inside the heat absorbing tubes 2a, a plurality of heat medium tubes 2b for circulating a heat medium such as helium gas are laid.
These heat medium pipes 2b are connected to a heat engine (not shown) such as a gas turbine via a blower (not shown), and the heat medium circulates between the heat absorber 1 and the heat engine.
【００１０】熱吸収器１の開口部１ａの外側には、太陽
光１０１を集光するよう回転放物線状の筒型をした集光
フード３が設けられている。この集光フード３の回転放
物線の極点側となる図１中、右側には、熱吸収器１の開
口部１ａと同形の丸穴をなす送出口３ａが集光フード３
と同軸をなすよう形成されており、集光フード３の回転
放物線の極点と熱吸収器１の開口部１ａの中心とが一致
するよう集光フード３の送出口３ａと熱吸収器１の開口
部１ａとは連結されている。集光フード３の送出口３ａ
との対向側となる図１中、左側には、送出口３ａよりも
大径となる丸穴をなす受入口３ｂが集光フード３と同軸
をなすよう形成されている。集光フード３の周壁３ｃの
内周面は、鏡面状の反射面３ｄをなしている。Outside the opening 1a of the heat absorber 1, there is provided a condensing hood 3 having a cylindrical shape of a parabolic shape for concentrating the sunlight 101. In FIG. 1, which is on the pole side of the rotation parabola of the light collecting hood 3, on the right side is a light collecting outlet 3a having a circular hole having the same shape as the opening 1a of the heat absorber 1.
Is formed so as to be coaxial with, and the outlet 3a of the light collecting hood 3 and the opening of the heat absorber 1 are aligned so that the polar point of the parabola of rotation of the light collecting hood 3 and the center of the opening 1a of the heat absorber 1 are aligned. It is connected to the portion 1a. Outlet 3a of condensing hood 3
On the left side in FIG. 1, which is the side opposite to the above, a receiving port 3b having a circular hole having a diameter larger than that of the delivery port 3a is formed coaxially with the light collecting hood 3. The inner peripheral surface of the peripheral wall 3c of the light collecting hood 3 forms a mirror-like reflective surface 3d.
【００１１】つまり、集光フード３は、回転放物線状の
形成されているので、集光フード３の軸心線に対して角
度θの範囲内で受入口３ｂへ入射する太陽光１０１は、
全て送出口３ａに送られ、開口部１ａから熱吸収器１内
に送り込まれるのである。That is, since the condensing hood 3 is formed in the shape of a paraboloid of revolution, the sunlight 101 incident on the receiving port 3b within the range of the angle θ with respect to the axis of the condensing hood 3 is
All are sent to the delivery port 3a and sent into the heat absorber 1 through the opening 1a.
【００１２】一方、集光フード３の受入口３ｂの図１
中、左側遠方には、太陽光１０１を集光フード３の受入
口３ｂへ向けて反射する図示しないパラボラ型の反射鏡
が設けられている。On the other hand, the receiving port 3b of the light collecting hood 3 shown in FIG.
A parabolic reflector (not shown) that reflects the sunlight 101 toward the receiving port 3b of the light collecting hood 3 is provided on the far left side of the center.
【００１３】つまり、反射鏡は、太陽光１０１を集光フ
ード３の軸心線に対して角度θの範囲内で受入口３ｂへ
向けて反射すれば、全て熱吸収器１内へ送り込むことが
できるのである。That is, if the reflecting mirror reflects the sunlight 101 toward the receiving port 3b within the range of the angle θ with respect to the axis of the light collecting hood 3, the reflecting mirror can be entirely sent into the heat absorber 1. You can do it.
【００１４】従って、反射鏡の焦点調整は、非常に容易
となると共に、経時変形で焦点位置がずれたとしても、
角度θの範囲内であれば、何ら問題を生じることがな
く、同様に、焦点径が拡大しても集光フード３の受入口
３ｂの径内であれば、十分に許容できる。Therefore, the focus adjustment of the reflecting mirror becomes very easy, and even if the focus position shifts due to time-dependent deformation,
If the angle is within the range of θ, no problem will occur, and similarly, even if the focal diameter is increased, it can be sufficiently allowed within the diameter of the receiving port 3b of the light collecting hood 3.
【００１５】また、他の実施例を図４，５に基づいて説
明する。なお、図４には、その主要部概略構造を示し、
図５には、その概略機構を示す。但し、前述した実施例
と同一の部材には、前述した実施例と同一の符号を付け
て、その説明を省略する。Another embodiment will be described with reference to FIGS. In addition, FIG. 4 shows a schematic structure of a main part thereof,
FIG. 5 shows the schematic mechanism. However, the same members as those in the above-described embodiment are designated by the same reference numerals as those in the above-described embodiment, and the description thereof will be omitted.
【００１６】箱型をなす熱吸収器１１の一端面側には、
太陽光１０１を採光する角穴の開口部１１ａが形成され
ている。熱吸収器１１の開口部１１ａの外側には、太陽
光１０１を集光する集光フード１３が設けられている。
熱吸収器１１の開口部１１ａには、集光フード１３に形
成されて開口部１１ａと同形をなす角穴の送出口１３ａ
が連結されている。集光フード１３の送出口１３ａの対
向側となる端面には、送出口１３ａよりも開口面積の大
きい角穴の受入口１３ｂが形成されている。集光フード
１３の周壁１３ｃは、送出口１３ａと受入口１３ｂとの
間で放物面状に形成されており、その内周面は鏡面状の
反射面１３ｄをなしている。On one end face side of the box-shaped heat absorber 11,
An opening 11a of a square hole that illuminates the sunlight 101 is formed. A condenser hood 13 that condenses the sunlight 101 is provided outside the opening 11 a of the heat absorber 11.
The opening 11a of the heat absorber 11 has a square hole delivery port 13a formed in the light collecting hood 13 and having the same shape as the opening 11a.
Are connected. On the end surface of the light collecting hood 13 opposite to the delivery port 13a, a receiving port 13b of a square hole having an opening area larger than that of the delivery port 13a is formed. A peripheral wall 13c of the light collecting hood 13 is formed in a parabolic shape between the outlet 13a and the inlet 13b, and its inner peripheral surface forms a mirror-like reflecting surface 13d.
【００１７】つまり、前述した実施例の集光フード３が
円筒状であるのに対し、本実施例の集光フード１３は、
角筒状に形成されているのである。That is, while the light collecting hood 3 of the above-mentioned embodiment is cylindrical, the light collecting hood 13 of this embodiment is
It is formed in a rectangular tube shape.
【００１８】一方、集光フード１３の受入口１３ｂの図
５中、左方には、太陽光１０１を集光フード１３の受入
口１３ｂへ向けて反射する湾曲状の反射鏡１４が複数設
けられており、その焦点が集光フード１３の受入口１３
ｂへ向くように互いに連接されている。On the other hand, a plurality of curved reflecting mirrors 14 for reflecting the sunlight 101 toward the receiving port 13b of the light collecting hood 13 are provided on the left side of the receiving port 13b of the light collecting hood 13 in FIG. And the focus is on the inlet 13 of the light collecting hood 13.
They are connected to each other so as to face b.
【００１９】従って、前述した実施例と同様に、経時変
形で焦点位置がずれても、従来よりも許容範囲が広いと
共に、前述したパラボラ型の反射鏡よりも本実施例の反
射鏡１３の方が組み立てや焦点調整を容易に行うことが
できる。Therefore, similarly to the above-mentioned embodiment, even if the focal position is displaced due to the time-dependent deformation, the permissible range is wider than the conventional one, and the reflecting mirror 13 of the present embodiment is better than the parabola type reflecting mirror described above. Can be easily assembled and focused.
【００２０】[0020]
【発明の効果】前述したように、本発明による光熱発電
用集熱装置では、反射鏡からの光を集光フードが捕えて
熱吸収器へ送り込むので、熱吸収器の開口部に対して反
射鏡の焦点がずれたり拡大したりしても、反射鏡からの
光は、確実に熱吸収器の内部へ送られる。このため、宇
宙空間で使用する太陽熱発電設備に適用した場合、宇宙
空間などでの組み立てや、焦点調整が容易に行えるの
で、有人活動時間が短縮し、大幅な経費節減となる。ま
た、熱吸収器の外壁などに照射してしまうことがなくな
り、熱吸収器の溶融や破損などを防止することができ
る。As described above, in the heat collecting apparatus for photothermal power generation according to the present invention, since the light from the reflecting mirror is captured by the light collecting hood and sent to the heat absorber, it is reflected to the opening of the heat absorber. Even if the mirror is defocused or enlarged, the light from the reflecting mirror is surely sent to the inside of the heat absorber. For this reason, when applied to a solar thermal power generation facility used in outer space, assembly in outer space and focus adjustment can be easily performed, resulting in shortened manned activity time and significant cost savings. Further, the outer wall of the heat absorber is not irradiated, and the heat absorber can be prevented from being melted or damaged.
【図１】本発明による光熱発電用集熱装置を太陽熱発電
設備に適用した場合の一実施例の主要部断面概略構造図
である。FIG. 1 is a schematic structural cross-sectional view of a main part of an embodiment in which a heat collecting device for photothermal power generation according to the present invention is applied to a solar thermal power generation facility.
【図２】図１のII−II線矢視断面図である。FIG. 2 is a sectional view taken along the line II-II of FIG.
【図３】図１のIII-III 線矢視断面図である。FIG. 3 is a sectional view taken along the line III-III in FIG.
【図４】本発明による光熱発電用集熱装置を太陽熱発電
設備に適用した場合の他の実施例の主要部概略構造図で
ある。FIG. 4 is a schematic structural diagram of a main part of another embodiment in which the heat collecting device for photothermal power generation according to the present invention is applied to a solar thermal power generation facility.
【図５】その概略機構図である。FIG. 5 is a schematic mechanism diagram thereof.
【図６】従来の光熱発電用集熱装置を太陽熱発電設備に
用いた場合の概略機構図である。FIG. 6 is a schematic mechanism diagram when a conventional heat collecting device for photothermal power generation is used in a solar thermal power generation facility.
１ 熱吸収器 １ａ 開口部 ３ 集光フード ３ａ 送出口 ３ｂ 受入口 ３ｃ 周壁 ３ｄ 反射面 １１ 熱吸収器 １１ａ 開口部 １３ 集光フード １３ａ 送出口 １３ｂ 受入口 １３ｃ 周壁 １３ｄ 反射面 １０１ 太陽光 1 Heat Absorber 1a Opening 3 Condensing Hood 3a Outlet 3b Receiving Inlet 3c Circular Wall 3d Reflective Surface 11 Heat Absorber 11a Opening 13 Condensing Hood 13a Outlet 13b Inlet 13c Circular Wall 13d Reflective Surface 101 Solar
Claims (1)
が形成されると共に当該開口部から採光した光で熱媒を
加熱する熱吸収器を備えた光熱発電用集熱装置におい
て、 前記反射鏡からの光を集光する筒状の集光フードを前記
熱吸収器の前記開口部へ連通させて設け、 この集光フードの前記反射鏡側の端面を前記熱吸収器の
前記開口部よりも開口面積の大きい受入口とし、当該集
光フードの内周面を前記受入口からの光が前記開口部へ
向かって反射するよう放物面状の反射面としたことを特
徴とする光熱発電用集熱装置。1. A heat collecting device for photothermal power generation, comprising: an opening for collecting light reflected by a reflecting mirror; and a heat absorber for heating a heat medium with the light collected from the opening. A cylindrical light collecting hood that collects light from a reflecting mirror is provided in communication with the opening of the heat absorber, and an end surface of the light collecting hood on the reflecting mirror side is provided in the opening of the heat absorber. A heat-receiving device having a larger opening area than that of the light-collecting hood, and the inner peripheral surface of the light collecting hood is a parabolic reflecting surface so that light from the receiving port is reflected toward the opening. Heat collector for power generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5169921A JPH0727424A (en) | 1993-07-09 | 1993-07-09 | Solar heat collector for light heat power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5169921A JPH0727424A (en) | 1993-07-09 | 1993-07-09 | Solar heat collector for light heat power generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0727424A true JPH0727424A (en) | 1995-01-27 |
Family
ID=15895425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5169921A Withdrawn JPH0727424A (en) | 1993-07-09 | 1993-07-09 | Solar heat collector for light heat power generation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0727424A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006090452A1 (en) | 2005-02-24 | 2006-08-31 | Fujitsu Limited | Reference voltage generating circuit |
| KR100644389B1 (en) * | 2004-11-30 | 2006-11-10 | 정오진 | A solar energy collector |
| WO2009133883A1 (en) * | 2008-05-02 | 2009-11-05 | 株式会社エレクトラホールディングス | Solar energy absorber |
| JP2011027268A (en) * | 2008-08-07 | 2011-02-10 | Takashi Yabe | High efficiency sunlight tracking and heat collecting apparatus, desalination apparatus, and generator |
| JP2011027267A (en) * | 2008-05-02 | 2011-02-10 | Takashi Yabe | High efficiency sunlight heat collecting apparatus |
-
1993
- 1993-07-09 JP JP5169921A patent/JPH0727424A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100644389B1 (en) * | 2004-11-30 | 2006-11-10 | 정오진 | A solar energy collector |
| WO2006090452A1 (en) | 2005-02-24 | 2006-08-31 | Fujitsu Limited | Reference voltage generating circuit |
| WO2009133883A1 (en) * | 2008-05-02 | 2009-11-05 | 株式会社エレクトラホールディングス | Solar energy absorber |
| JP2011027267A (en) * | 2008-05-02 | 2011-02-10 | Takashi Yabe | High efficiency sunlight heat collecting apparatus |
| JPWO2009133883A1 (en) * | 2008-05-02 | 2011-09-01 | 株式会社エレクトラホールディングス | Solar collector |
| JP2011027268A (en) * | 2008-08-07 | 2011-02-10 | Takashi Yabe | High efficiency sunlight tracking and heat collecting apparatus, desalination apparatus, and generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001003 |