JP2012065620A - Renewable energy combined utilization system - Google Patents
Renewable energy combined utilization system Download PDFInfo
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- JP2012065620A JP2012065620A JP2010214732A JP2010214732A JP2012065620A JP 2012065620 A JP2012065620 A JP 2012065620A JP 2010214732 A JP2010214732 A JP 2010214732A JP 2010214732 A JP2010214732 A JP 2010214732A JP 2012065620 A JP2012065620 A JP 2012065620A
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- 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
- Y02E10/50—Photovoltaic [PV] energy
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- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
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Abstract
Description
本発明は、太陽光発電装置の発電効率を向上させるとともに、太陽光発電装置の冷却に用いた温排水をメタン発酵槽の加熱源として用い、該メタン発酵槽においては太陽光発電装置の地下で栽培したバイオマスを嫌気性発酵させメタンを生成することで、再生可能エネルギーを複合利用するシステムに関する。 The present invention improves the power generation efficiency of the solar power generation device and uses the warm drainage used for cooling the solar power generation device as a heating source of the methane fermentation tank. The present invention relates to a system that uses renewable energy in combination by anaerobic fermentation of cultivated biomass to produce methane.
人間の社会的活動に伴って、発電所、工場、自動車等から大気中に排出される二酸化炭素は地球温暖化の主たる原因であることが知られており、近年、この二酸化炭素の排出量を削減することが地球環境の保護の大きな課題となっている。かかる背景に鑑み、二酸化炭素の排出を増大させることなくエネルギーを得る方法として、太陽光発電や風力発電、地熱発電、ミニ水力発電あるいは波力発電等の自然エネルギーを利用した発電や、バイオマスを活用した発電やメタン、メタノール等の燃料製造など、再生可能エネルギーに関する技術開発が行われている。 It is known that carbon dioxide discharged into the atmosphere from power plants, factories, automobiles, etc. due to human social activities is the main cause of global warming. Reduction is a major issue in protecting the global environment. In view of this background, power generation using natural energy such as solar power generation, wind power generation, geothermal power generation, mini hydroelectric power generation or wave power generation, and biomass are used as methods for obtaining energy without increasing carbon dioxide emissions. Technology development related to renewable energy, such as power generation and fuel production such as methane and methanol, is underway.
太陽光発電においては、温度が発電効率に大きな影響を与え、太陽電池の温度が上昇すると発電量が低下することが知られている。例えば、シリコン系の太陽電池の場合、温度が８０℃になると、２５℃の定格状態と比較して、光電変換効率が２割以上低下することがある。また、太陽電池の温度が急激に上昇すると、太陽光発電装置の構成部材に熱負荷が掛かり、太陽電池が劣化するという問題が生じる場合もある。そこで、太陽光発電装置を空冷方式や水冷方式で冷却することが提案されている（例えば、特許文献１〜３参照）。 In solar power generation, it is known that the temperature greatly affects the power generation efficiency, and the amount of power generation decreases as the temperature of the solar cell increases. For example, in the case of a silicon-based solar cell, when the temperature reaches 80 ° C., the photoelectric conversion efficiency may decrease by 20% or more compared to the rated state of 25 ° C. Moreover, when the temperature of a solar cell rises rapidly, the heat load will be applied to the structural member of a solar power generation device, and the problem that a solar cell deteriorates may arise. Therefore, it has been proposed to cool the solar power generation apparatus by an air cooling method or a water cooling method (for example, see Patent Documents 1 to 3).
一方、バイオマスの嫌気性発酵によってメタンを生成し、燃料化する方法も提案されている（例えば、特許文献４、５参照）。しかしながら、栽培で得られるバイオマスは、調達量が非常に大きく、太陽光や風力と比較すると安価という利点はあるが、単位土地（栽培）面積当たりの得られるエネルギーは、他のＲＰＳ電源に比べて著しく低いという問題点があり、エネルギー密度は太陽光の１／５０〜１／１００程度である。 On the other hand, a method of producing methane by anaerobic fermentation of biomass and converting it to fuel has also been proposed (see, for example, Patent Documents 4 and 5). However, the biomass obtained by cultivation has a very large procurement amount and has the advantage of being cheap compared to solar and wind power, but the energy obtained per unit land (cultivation) area is more than that of other RPS power sources. There is a problem that it is remarkably low, and the energy density is about 1/50 to 1/100 that of sunlight.
特許文献４に開示されている方法は、太陽光発電や風力発電により得られた電力を有効に利用して、バイオマスを発酵させメタンガスを製造する方法である。太陽光や風力といった自然エネルギーと、再生可能なエネルギーであるバイオマスを融合させるものであるが、太陽光あるいは風力による発電を実施する場所とバイオマスを入手する場所を同じ場所に限定するものではなく、また、単位面積から得られる再生可能なエネルギー総量の増大を図ろうとするものではない。 The method disclosed in Patent Document 4 is a method for producing methane gas by fermenting biomass by effectively using electric power obtained by solar power generation or wind power generation. Natural energy such as sunlight and wind power and biomass, which is renewable energy, are merged, but the place where solar or wind power generation is performed and the place where biomass is obtained are not limited to the same place, Moreover, it is not intended to increase the total amount of renewable energy obtained from the unit area.
特許文献５に開示されている方法は、分散電源の余剰エネルギーで水素を製造し、その水素と二酸化炭素とでメタンを製造する方法である。 The method disclosed in Patent Document 5 is a method for producing hydrogen with surplus energy of a distributed power source and producing methane with the hydrogen and carbon dioxide.
本発明は、太陽光発電装置を設置した土地を多元的に利用することで生産エネルギー密度を高め、かつ、太陽光発電装置の発電効率を上げることができる、再生可能エネルギー複合利用システムを提供することを目的とする。 The present invention provides a combined renewable energy utilization system that can increase the production energy density and increase the power generation efficiency of a solar power generation device by using the land on which the solar power generation device is installed in a multiple manner. For the purpose.
上記目的を達成するため、本発明は、下記の構成のシステムを提供する。
（１）地上に設置された太陽光発電装置と、
該太陽光発電装置の地下に設置されたバイオマス栽培装置と、
該バイオマス栽培装置で栽培したバイオマスをメタン発酵させるメタン発酵槽と、
を備え、
前記太陽光発電装置の受光面の冷却に用いた温排水をメタン発酵槽の加熱源として用いると共に、メタン発酵槽において前記バイオマス栽培装置で栽培されたバイオマスを含む有機性廃棄物をメタン発酵させ、メタン発酵槽の加熱源として用いた温排水をバイオマス栽培装置に給水してバイオマスの栽培に利用することを特徴とする再生可能エネルギー複合利用システム。
（２）バイオマスが、モヤシ、ウドまたはキノコであることを特徴とする上記（１）に記載の再生可能エネルギー複合利用システム。
（３）バイオマス栽培装置に照明灯を付設し、メタン発酵槽で生成する二酸化炭素をメタンガス精製装置で分離した後、該バイオマス栽培装置に供給することを特徴とする上記（１）に記載の再生可能エネルギー複合利用システム。
（４）バイオマスが、モヤシまたはウドであることを特徴とする上記（３）に記載の再生可能エネルギー複合利用システム。
（５）バイオマス以外の有機性廃棄物が、生ゴミ、もみ殻、稲藁、蓄糞、食品残渣、廃材、古紙、水産物加工残渣、建廃材、伐採木、下水汚泥、厨芥類、紙類、木、竹または草類であることを特徴とする上記（１）〜（４）のいずれかに記載の再生可能エネルギー複合利用システム。
（６）太陽光発電装置の発電電力を蓄電する蓄電池を設置し、蓄電した電力を温排水回収槽の保温ヒーターに供給することを特徴とする上記（１）〜（５）のいずれかに記載の再生可能エネルギー複合利用システム。
（７）太陽光発電装置はその受光面に水を散布する散水装置を備え、該散水装置は太陽光発電装置の受光面に設置された温度センサの検知温度に連動して散水装置の電源をオンオフできる制御装置が付設されていることを特徴とする上記（１）〜（６）のいずれかに記載の再生可能エネルギー複合利用システム。
（８）制御装置が、温度センサの検知温度が第１の所定温度を越えた場合に前記受光面への水の散布を開始し、温度センサの検知温度が第２の所定温度以下になった場合に水の散布を停止することを特徴とする上記（７）に記載の再生可能エネルギー複合利用システム。
In order to achieve the above object, the present invention provides a system having the following configuration.
(1) a photovoltaic power generator installed on the ground;
A biomass cultivation apparatus installed in the basement of the solar power generation apparatus;
A methane fermentation tank for methane fermentation of biomass cultivated by the biomass cultivation apparatus;
With
While using the warm wastewater used for cooling the light receiving surface of the solar power generation device as a heating source of the methane fermentation tank, methane fermentation of organic waste containing biomass cultivated in the biomass cultivation apparatus in the methane fermentation tank, A renewable energy combined utilization system characterized in that hot wastewater used as a heating source for a methane fermentation tank is supplied to a biomass cultivation apparatus and used for cultivation of biomass.
(2) The renewable energy composite utilization system according to (1) above, wherein the biomass is bean sprouts, udo or mushrooms.
(3) Regeneration as described in (1) above, wherein an illuminating lamp is attached to the biomass cultivation apparatus, carbon dioxide produced in the methane fermentation tank is separated by the methane gas purification apparatus, and then supplied to the biomass cultivation apparatus Possible energy combined use system.
(4) The combined renewable energy utilization system according to (3) above, wherein the biomass is sprouts or wood.
(5) Organic waste other than biomass is garbage, rice husks, rice straw, feces, food residues, waste materials, waste paper, marine products processing residues, building waste materials, felled trees, sewage sludge, moss, papers, The renewable energy composite utilization system according to any one of (1) to (4) above, which is a tree, bamboo, or grass.
(6) The battery according to any one of the above (1) to (5), wherein a storage battery for storing the generated power of the solar power generation apparatus is installed, and the stored power is supplied to a heat retaining heater of the warm drainage recovery tank. Renewable energy combined use system.
(7) The solar power generation device includes a watering device that sprays water on the light receiving surface, and the watering device powers the watering device in conjunction with the temperature detected by a temperature sensor installed on the light receiving surface of the solar power generation device. The renewable energy composite utilization system according to any one of (1) to (6) above, further comprising a control device that can be turned on and off.
(8) When the temperature detected by the temperature sensor exceeds the first predetermined temperature, the control device starts spraying water on the light receiving surface, and the temperature detected by the temperature sensor becomes equal to or lower than the second predetermined temperature. In this case, the spraying of water is stopped, and the combined renewable energy system according to (7) above.
本発明の再生可能エネルギー複合利用システムによれば、地上に設置した太陽光発電装置の受光面に水を散布し、受光面を冷却することで、太陽光発電装置の光電変換効率の低下を防止すると共に、冷却に用いた温排水を、地下で栽培したバイオマスをメタン発酵させるメタン発酵槽の加熱源として供給することにより、太陽光発電装置からは電力が、バイオマスからはバイオマス燃料が得られるため、単位面積から得られる再生可能エネルギーの総量を増大させることが可能となる。 According to the renewable energy composite utilization system of the present invention, water is sprayed on the light receiving surface of a solar power generation device installed on the ground, and the light receiving surface is cooled, thereby preventing a decrease in photoelectric conversion efficiency of the solar power generation device. In addition, by supplying the hot effluent used for cooling as a heating source for a methane fermentation tank for methane fermentation of biomass cultivated underground, electricity can be obtained from the solar power generation device and biomass fuel can be obtained from the biomass. The total amount of renewable energy obtained from the unit area can be increased.
また、メタン発酵槽に供給された後の温排水は、地下に設置されたバイオマス栽培装置に給水されて栽培に利用される他、バイオマス栽培装置の温度調節用の熱源として有効利用することができる。さらに、メタン発酵槽で生成する二酸化炭素は、地下に設置されたバイオマス栽培装置に照明灯を付設しておくことで、バイオマスの栽培促進用として有効利用される。 Moreover, the warm wastewater after being supplied to the methane fermentation tank can be effectively used as a heat source for adjusting the temperature of the biomass cultivation apparatus, in addition to being supplied to the biomass cultivation apparatus installed underground and used for cultivation. . Furthermore, carbon dioxide produced in a methane fermentation tank is effectively used for promoting cultivation of biomass by attaching an illumination lamp to a biomass cultivation apparatus installed underground.
以下、本発明に係る再生可能エネルギー複合利用システムの好ましい実施形態を、図面を参照しながら詳細に説明する。 Hereinafter, a preferred embodiment of a combined renewable energy system according to the present invention will be described in detail with reference to the drawings.
図１は、再生可能エネルギー複合利用システムの一実施形態を示すブロック図である。図２は、同システムにおける太陽光発電装置とバイオマス栽培装置を示す説明図である。図３は、太陽光発電装置周辺の各装置の接続を示す概略図である。なお、図１〜図３において同一の装置に対しては同じ番号を付与している。 FIG. 1 is a block diagram showing an embodiment of a combined renewable energy utilization system. FIG. 2 is an explanatory diagram showing a photovoltaic power generation apparatus and a biomass cultivation apparatus in the system. FIG. 3 is a schematic diagram showing connection of each device around the solar power generation device. 1 to 3, the same numbers are assigned to the same devices.
図１、図２に示すように、本発明の再生可能エネルギー複合利用システムでは、地上に設置した太陽光発電装置１０の地下に、バイオマス栽培装置６０を設置する。太陽光発電装置１０は、その受光面１１に水を散布する散水装置１２を備えており、該散水装置１２により散布された水で太陽光発電装置１０の受光面１１が冷却される。冷却に用いられた温排水は、温排水回収槽２０に回収され必要に応じて温度調節された後、メタン発酵槽３０の加熱源として用いられる。 As shown in FIGS. 1 and 2, in the renewable energy composite utilization system of the present invention, a biomass cultivation apparatus 60 is installed in the basement of the solar power generation apparatus 10 installed on the ground. The solar power generation device 10 includes a watering device 12 that sprays water on the light receiving surface 11, and the light receiving surface 11 of the solar power generation device 10 is cooled by the water sprayed by the watering device 12. The warm drainage used for cooling is recovered in the warm drainage recovery tank 20 and adjusted as necessary, and then used as a heating source for the methane fermentation tank 30.
メタン発酵槽３０においては、バイオマス栽培装置６０で栽培したバイオマスを含む有機性廃棄物をメタン発酵する。メタン発酵槽３０の加熱源として用いた温排水は、メタン発酵槽３０より移送され、バイオマス栽培装置６０に給水される。 In the methane fermentation tank 30, the organic waste containing the biomass cultivated by the biomass cultivation apparatus 60 is subjected to methane fermentation. The warm wastewater used as a heating source for the methane fermentation tank 30 is transferred from the methane fermentation tank 30 and supplied to the biomass cultivation apparatus 60.
バイオマス栽培装置６０で栽培するバイオマスとしては、モヤシ、ウド、キノコ等の暗所栽培が可能なバイオマスが挙げられる。これらのバイオマスの栽培適温は２０〜３０℃である。バイオマス栽培装置６０は、多段方式に形成しておくことで、単位土地（栽培）面積当たりの得られるエネルギーを向上させることができる。 Examples of biomass cultivated by the biomass cultivation apparatus 60 include biomass that can be cultivated in the dark, such as bean sprouts, udos, and mushrooms. The cultivation suitable temperature of these biomass is 20-30 degreeC. The biomass cultivation apparatus 60 can improve the energy obtained per unit land (cultivation) area by forming it in a multistage system.
太陽光発電装置１０は、その上部に受光面１１を冷却するための水を散布する散水装置１２を設置し、その下部に散布した水を回収する樋状の温排水回収管１３を設置するのが良い。散水装置１２としては、図２に示したように、所定の間隔で複数の孔を開けた管を、個々の太陽光発電装置１０の受光面１１の上部に固定して配置し、受光面１１上に水を流し出す方式の散水装置等が挙げられるが、特に限定されない。太陽光発電装置１０の受光面１１を冷却する水は、河川水、工業用水、地下水、水道水等を用いることができる。 The solar power generation device 10 is provided with a watering device 12 for spraying water for cooling the light receiving surface 11 at the upper portion, and a bowl-shaped hot drainage collecting pipe 13 for collecting the water sprayed at the lower portion. Is good. As the watering device 12, as shown in FIG. 2, a tube having a plurality of holes formed at predetermined intervals is fixed to the upper part of the light receiving surface 11 of each solar power generation device 10. Although the water sprinkling apparatus etc. of the system which pours water up are mentioned, it does not specifically limit. River water, industrial water, ground water, tap water, or the like can be used as water for cooling the light receiving surface 11 of the solar power generation device 10.
また、太陽光発電装置１０の受光面１１には、冷却水の無駄をなくすために温度センサ１４を取り付けると良い。冷却水は、ポンプ１及び水供給配管２を介して、散水装置１２に供給される。散水装置１２には、ポンプ１の駆動を制御するための制御装置１７が付設されていると、受光面１１および温排水の温度調節が容易である。 Further, a temperature sensor 14 may be attached to the light receiving surface 11 of the solar power generation device 10 in order to eliminate waste of cooling water. The cooling water is supplied to the watering device 12 via the pump 1 and the water supply pipe 2. If the sprinkler 12 is provided with a control device 17 for controlling the drive of the pump 1, it is easy to adjust the temperature of the light receiving surface 11 and the hot drainage.
太陽光が照射されると太陽光発電装置１０の受光面１１の温度が上昇する。制御装置１７は、受光面１１に設定された温度センサ１４により検知された受光面１１の温度が、予め設定された温度を越えると、ポンプ１を駆動させ、散水装置１２より水を受光面１１に散布するように作動する。 When sunlight is irradiated, the temperature of the light receiving surface 11 of the solar power generation device 10 increases. When the temperature of the light receiving surface 11 detected by the temperature sensor 14 set on the light receiving surface 11 exceeds a preset temperature, the control device 17 drives the pump 1 to receive water from the water sprinkler 12 and the light receiving surface 11. Operates to spray.
即ち、図３に示すように、太陽光発電装置１０を、双方向コンバータ１６を介して系統電源１９と接続し、双方向コンバータ１６の出力側と系統電源１９の接続点には、スイッチ１８を介してポンプ１を接続する。スイッチ１８の開閉は制御装置１７により制御される。双方向コンバータ１６の入力側には、蓄電池９０を接続する。複数の太陽光発電装置１０を設置する場合、それぞれの太陽光発電装置１０に対応して蓄電池９０を設置しても良いが、複数の太陽光発電装置１０を共通の１台の蓄電池９０と並列に接続するのがシステムをコンパクト化できるので好ましい。 That is, as shown in FIG. 3, the photovoltaic power generation apparatus 10 is connected to the system power supply 19 via the bidirectional converter 16, and a switch 18 is connected to the connection point between the output side of the bidirectional converter 16 and the system power supply 19. The pump 1 is connected via Opening and closing of the switch 18 is controlled by the control device 17. A storage battery 90 is connected to the input side of the bidirectional converter 16. When installing a plurality of photovoltaic power generation apparatuses 10, storage batteries 90 may be installed corresponding to each photovoltaic power generation apparatus 10, but the plurality of photovoltaic power generation apparatuses 10 are arranged in parallel with a single storage battery 90. It is preferable to connect to the system because the system can be made compact.
太陽光発電装置１０の受光面１１に設置した温度センサ１４は、制御装置１７との間に接続回路を有し、温度センサ１４により検知された受光面１１の温度が、予め設定された第１の所定温度を越えると、制御装置１７はスイッチ１８をオンにしてポンプ１を駆動させ散水装置１２より水を受光面１１に散布する。受光面１１が冷却され、温度センサ１４により検知された受光面１１の温度が予め設定された第２の所定温度以下に低下すると、制御装置１７はスイッチ１８をオフにしポンプ１の駆動を停止する。 The temperature sensor 14 installed on the light receiving surface 11 of the solar power generation device 10 has a connection circuit between the control device 17 and the temperature of the light receiving surface 11 detected by the temperature sensor 14 is set in advance. When the predetermined temperature is exceeded, the control device 17 turns on the switch 18 to drive the pump 1 to spray water from the water sprinkler 12 onto the light receiving surface 11. When the light receiving surface 11 is cooled and the temperature of the light receiving surface 11 detected by the temperature sensor 14 falls below a second predetermined temperature set in advance, the control device 17 turns off the switch 18 and stops driving the pump 1. .
太陽光発電装置１０により発電された電力は、蓄電池９０に充電されるとともに、ポンプ１、制御装置１７及び温排水回収槽２０のヒーター電源として使用される。太陽光発電装置１０が発電状態にあり、かつ蓄電池９０が放電状態にあり、ポンプ１、制御装置１７及び温排水回収槽２０を駆動するのに必要な電力よりも余剰となる電力は、系統電源１９に逆潮流される。 The electric power generated by the solar power generation device 10 is charged to the storage battery 90 and used as a heater power source for the pump 1, the control device 17, and the warm waste water collection tank 20. The solar power generation device 10 is in a power generation state, the storage battery 90 is in a discharge state, and the power surplus than that required to drive the pump 1, the control device 17, and the warm wastewater recovery tank 20 is a grid power supply. 19 is reversed.
太陽光発電装置１０の受光面１１に太陽光が照射され、発電が行われるとともに温度が上昇してくるが、受光面１１に設置された温度センサ１４が温度を検知し、前記第１の所定温度を越えた時点で制御装置１７が作動しスイッチ１８をオンにすることでポンプ１が駆動して散水装置１２より受光面１１に水が散布されるので、太陽光発電装置１０の光電変換効率の低下が防止される。そして、受光面１１が冷却され前記第２の所定温度以下になった時点で制御装置１７によってスイッチ１８がオフになりポンプ１の駆動が停止されるので、無駄な電力を使用することなく効率的に受光面１１が冷却される。 The light receiving surface 11 of the solar power generation device 10 is irradiated with sunlight, and power is generated and the temperature rises. The temperature sensor 14 installed on the light receiving surface 11 detects the temperature, and the first predetermined When the temperature exceeds the temperature, the control device 17 is activated and the switch 18 is turned on so that the pump 1 is driven and water is sprayed from the water spray device 12 to the light receiving surface 11. Is prevented. Since the switch 18 is turned off by the control device 17 and the pump 1 is stopped when the light-receiving surface 11 is cooled to the second predetermined temperature or lower, it is efficient without using wasted power. The light receiving surface 11 is cooled.
なお、太陽光発電装置１０ならびに蓄電池９０は、双方向コンバータ１６を介して系統電源１９と接続されているので、気象状況によって太陽光発電装置１０の出力が蓄電池９０を充電するのに不十分な場合は、系統電源１９の交流を直流に変換して蓄電池９０の充電が行われる。太陽光発電装置１０と双方向コンバータ１６の間には、逆流防止ダイオード１５が配置されている。また、太陽光発電装置１０による発電のない夜間において、メタン発酵槽３０を運転する場合で、蓄電池９０の蓄電量が放電下限値に近く、蓄電池９０からの放電で運転できない場合には系統電源１９の電力により運転される。 In addition, since the solar power generation device 10 and the storage battery 90 are connected to the system power supply 19 via the bidirectional converter 16, the output of the solar power generation device 10 is insufficient to charge the storage battery 90 depending on weather conditions. In this case, the accumulator 90 is charged by converting the alternating current of the system power supply 19 into direct current. A backflow prevention diode 15 is arranged between the solar power generation device 10 and the bidirectional converter 16. Further, in the case where the methane fermentation tank 30 is operated at night when there is no power generation by the solar power generation device 10, when the storage amount of the storage battery 90 is close to the discharge lower limit value and cannot be operated by the discharge from the storage battery 90, the grid power supply 19 It is driven by the electric power.
メタン発酵槽３０においては、バイオマス栽培装置６０で栽培したバイオマスを、混合槽７０に移送し、必要に応じて生ゴミ、もみ殻、稲藁、蓄糞、食品残渣、廃材、古紙、水産物加工残渣、建廃材、伐採木、下水汚泥、厨芥類、紙類、木、竹または草類等の有機性廃棄物と混合した後、粉砕機８０で粉砕してメタン発酵槽３０に供給する。 In the methane fermentation tank 30, the biomass cultivated by the biomass cultivation apparatus 60 is transferred to the mixing tank 70, and if necessary, raw garbage, rice husk, rice straw, feces, food residue, waste material, waste paper, seafood processing residue Then, after mixing with organic waste such as building waste materials, felled trees, sewage sludge, moss, paper, wood, bamboo or grass, it is pulverized by a pulverizer 80 and supplied to the methane fermentation tank 30.
メタン発酵槽３０では、従来公知の製造法を任意に適用することができる。例えば、混合槽７０において、有機性廃棄物に水を加え、水分８０％〜９０％程度の濃度に希釈した後、粉砕機８０で粉砕したものを、メタン発酵槽３０に導入し発酵温度３７〜５５℃でメタン発酵させる方法が挙げられる。 In the methane fermentation tank 30, a conventionally known manufacturing method can be arbitrarily applied. For example, in the mixing tank 70, water is added to organic waste, diluted to a concentration of about 80% to 90% water, and then pulverized by the pulverizer 80 is introduced into the methane fermentation tank 30 and the fermentation temperature 37- A method of methane fermentation at 55 ° C is mentioned.
メタン発酵槽３０の加熱源として用いる温排水は、温排水回収槽２０において、温度が発酵温度の近傍に設定される。所定の温度に達しない場合は、ヒーター等の加熱手段を用いて加温しておき、ヒーター電源は蓄電池９０より供給する。所定の温度に調節された温排水は、温排水供給配管３及びポンプ２１を介して、メタン発酵槽３０に導入され、メタン発酵の後、温排水供給配管４を介してバイオマス栽培装置６０に供給され、バイオマスの加水に用いられる。 The temperature of the warm wastewater used as a heating source for the methane fermentation tank 30 is set in the vicinity of the fermentation temperature in the warm drainage recovery tank 20. If the temperature does not reach the predetermined temperature, it is heated using a heating means such as a heater, and the heater power is supplied from the storage battery 90. The warm drainage adjusted to a predetermined temperature is introduced into the methane fermentation tank 30 via the warm drainage supply pipe 3 and the pump 21 and supplied to the biomass cultivation apparatus 60 via the warm drainage supply pipe 4 after the methane fermentation. And used for biomass hydration.
また、温排水回収槽２０に貯槽された温排水は、温排水供給配管５を介してバイオマス栽培装置６０に供給され、装置の温度調節用の熱源としても利用されるので、省エネルギーである。 Moreover, the warm wastewater stored in the warm drainage recovery tank 20 is supplied to the biomass cultivation apparatus 60 via the warm drainage supply pipe 5 and is also used as a heat source for adjusting the temperature of the apparatus, which is energy saving.
メタン発酵槽３０から排出されるメタンガスは、メタンガス精製装置４０において他の副生ガス（二酸化炭素等）と分離される。メタンガス精製装置４０としては、例えば、メタン発酵槽３０の排ガスを０．５５〜２．０ＭＰａに加圧する圧縮機と、加圧された排ガスと水とを接触させて該水に二酸化炭素を溶解させるための吸収塔と、該吸収塔で二酸化炭素が溶解された水を大気圧状態に戻す減圧タンクとを有するものが挙げられる。吸収塔の内部を加圧条件とすることで、大気圧下における飽和濃度以上の二酸化炭素を水に溶解させ、排ガスからの二酸化炭素を除去し、高純度のメタンガスを吸収塔から排出させる。また、減圧タンクで吸収塔からの排水を大気圧状態に減圧し、過飽和に溶解している二酸化炭素の過飽和分を放出させた後の飽和炭酸水を排出できるように形成されているメタンガス精製装置を用いることができる。 The methane gas discharged from the methane fermentation tank 30 is separated from other by-product gases (such as carbon dioxide) in the methane gas purification device 40. As the methane gas purification apparatus 40, for example, a compressor that pressurizes the exhaust gas of the methane fermentation tank 30 to 0.55 to 2.0 MPa, and the pressurized exhaust gas and water are brought into contact with each other to dissolve carbon dioxide in the water. And a decompression tank for returning water in which carbon dioxide is dissolved in the absorption tower to an atmospheric pressure state. By setting the inside of the absorption tower to a pressurized condition, carbon dioxide having a saturation concentration or higher under atmospheric pressure is dissolved in water, carbon dioxide from the exhaust gas is removed, and high-purity methane gas is discharged from the absorption tower. In addition, the methane gas purifier is configured to discharge the saturated carbonated water after discharging the supersaturated portion of carbon dioxide dissolved in supersaturation by depressurizing the waste water from the absorption tower to atmospheric pressure with a decompression tank. Can be used.
吸収塔から排出されるガスは、高純度に精製されたメタンガスであるので、除湿器等を通過させて乾燥した後、メタンガスホルダー５０に貯留して燃料として利用することができる。 Since the gas discharged from the absorption tower is methane gas purified with high purity, it can be passed through a dehumidifier or the like and dried, and then stored in the methane gas holder 50 and used as fuel.
減圧タンクで大気圧状態に戻されることで、過度に溶解されていた二酸化炭素が放出されるので、二酸化炭素ガス及び水に溶解された二酸化炭素（炭酸水）は、配管６を介してバイオマス栽培装置６０に供給される。バイオマス栽培装置６０で栽培されるバイオマスがウドやモヤシのような植物の場合は、バイオマス栽培装置６０に照明灯を付設し、微弱な照明もしくは短時間の照明もしくはフラッシュ照明などを併用することで、二酸化炭素の供給により栽培が促進され、この際メタン発酵槽３０で発生した二酸化炭素は、バイオマスに固定化されるため二酸化炭素量が増加しない。 Since the carbon dioxide that has been dissolved excessively is released by returning to the atmospheric pressure state in the decompression tank, the carbon dioxide dissolved in the carbon dioxide gas and water (carbonated water) is cultivated through the pipe 6 Supplied to the device 60. When the biomass cultivated by the biomass cultivation apparatus 60 is a plant such as Udo or sprout, an illumination lamp is attached to the biomass cultivation apparatus 60, and a weak illumination or a short-time illumination or a flash illumination is used in combination. Cultivation is promoted by the supply of carbon dioxide. At this time, carbon dioxide generated in the methane fermentation tank 30 is immobilized on biomass, so the amount of carbon dioxide does not increase.
以上、本発明によれば、太陽光発電装置の発電電力の一部を利用して、太陽光発電装置の受光面の冷却を行うことにより発電効率の向上が図れ、同時にバイオマスを栽培してメタン発酵させ、生成するメタンをバイオマス燃料として活用できるので、単位面積から得られる再生可能エネルギーの総量を増大させることができる。また、メタン発酵槽の加温熱源として温排水を回収して利用できるので、省エネルギーである。メタン発酵槽で発生する二酸化炭素は、バイオマス栽培装置に戻してバイオマスの栽培に利用できるので、二酸化炭素の発生をゼロにできる。 As described above, according to the present invention, it is possible to improve the power generation efficiency by cooling the light receiving surface of the solar power generation device by using a part of the generated power of the solar power generation device. Since the methane produced by fermentation can be used as biomass fuel, the total amount of renewable energy obtained from the unit area can be increased. Moreover, since the warm waste water can be recovered and used as a heating heat source of the methane fermentation tank, it is energy saving. Since carbon dioxide generated in the methane fermenter can be returned to the biomass cultivation apparatus and used for cultivation of biomass, generation of carbon dioxide can be made zero.
本発明の再生可能エネルギー複合利用システムによれば、バイオマスの栽培と太陽光発電を同じ場所で同時に実施することができ、しかも太陽光発電装置の受光面の冷却により発電効率の向上も図れるので、単位面積から得られる再生可能エネルギーの総量を増大させるシステムとして極めて有用である。 According to the renewable energy composite utilization system of the present invention, biomass cultivation and solar power generation can be performed simultaneously in the same place, and the power generation efficiency can be improved by cooling the light receiving surface of the solar power generation device. It is extremely useful as a system that increases the total amount of renewable energy obtained from a unit area.
１ ポンプ
２ 水供給配管
３、４、５ 温排水供給配管
６ 配管
１０ 太陽光発電装置
１１ 受光面
１２ 散水装置
１３ 温排水回収管
１４ 温度センサ
１５ 逆流防止ダイオード
１６ 双方向コンバータ
１７ 制御装置
１８ スイッチ
１９ 系統電源
２０ 温排水回収槽
２１ ポンプ
３０ メタン発酵槽
４０ メタンガス精製装置
５０ メタンガスホルダー
６０ バイオマス栽培装置
７０ 混合槽
８０ 粉砕機
９０ 蓄電池
DESCRIPTION OF SYMBOLS 1 Pump 2 Water supply piping 3, 4, 5 Warm drainage supply piping 6 Piping 10 Photovoltaic power generation device 11 Light-receiving surface 12 Sprinkling device 13 Warm drainage collection tube 14 Temperature sensor 15 Backflow prevention diode 16 Bidirectional converter 17 Controller 18 Switch 19 System power supply 20 Warm waste water recovery tank 21 Pump 30 Methane fermentation tank 40 Methane gas purification apparatus 50 Methane gas holder 60 Biomass cultivation apparatus 70 Mixing tank 80 Crusher 90 Storage battery
Claims (8)
該太陽光発電装置の地下に設置されたバイオマス栽培装置と、
該バイオマス栽培装置で栽培したバイオマスをメタン発酵させるメタン発酵槽と、
を備え、
前記太陽光発電装置の受光面の冷却に用いた温排水をメタン発酵槽の加熱源として用いると共に、メタン発酵槽において前記バイオマス栽培装置で栽培されたバイオマスを含む有機性廃棄物をメタン発酵させ、メタン発酵槽の加熱源として用いた温排水をバイオマス栽培装置に給水してバイオマスの栽培に利用することを特徴とする再生可能エネルギー複合利用システム。 A solar power generator installed on the ground;
A biomass cultivation apparatus installed in the basement of the solar power generation apparatus;
A methane fermentation tank for methane fermentation of biomass cultivated by the biomass cultivation apparatus;
With
While using the warm wastewater used for cooling the light receiving surface of the solar power generation device as a heating source of the methane fermentation tank, methane fermentation of organic waste containing biomass cultivated in the biomass cultivation apparatus in the methane fermentation tank, A renewable energy combined utilization system characterized in that hot wastewater used as a heating source for a methane fermentation tank is supplied to a biomass cultivation apparatus and used for cultivation of biomass.
The control device starts spraying water on the light receiving surface when the temperature detected by the temperature sensor exceeds the first predetermined temperature, and water is detected when the temperature detected by the temperature sensor falls below the second predetermined temperature. The renewable energy composite utilization system according to claim 7, wherein spraying of the fuel is stopped.
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| CN113308347A (en) * | 2021-07-08 | 2021-08-27 | 毅康科技有限公司 | Device and method for preparing biogas through combined fermentation of various biomasses |
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| JP2003199377A (en) * | 2001-12-27 | 2003-07-11 | Panahome Corp | Solarlight power generator |
| JP2006212524A (en) * | 2005-02-02 | 2006-08-17 | Mitsubishi Heavy Ind Ltd | Composite incineration system and method for waste |
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| JPH0810790A (en) * | 1994-07-05 | 1996-01-16 | Seiichi Kitabayashi | Device and method for taking out gaseous methane |
| JP2003199377A (en) * | 2001-12-27 | 2003-07-11 | Panahome Corp | Solarlight power generator |
| JP2006212524A (en) * | 2005-02-02 | 2006-08-17 | Mitsubishi Heavy Ind Ltd | Composite incineration system and method for waste |
| JP2006280252A (en) * | 2005-03-31 | 2006-10-19 | Koken Boring Mach Co Ltd | Underground agricultural factory system |
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| CN113308347A (en) * | 2021-07-08 | 2021-08-27 | 毅康科技有限公司 | Device and method for preparing biogas through combined fermentation of various biomasses |
| CN113308347B (en) * | 2021-07-08 | 2024-02-27 | 毅康科技有限公司 | Device and method for preparing biogas by multi-type biomass combined fermentation |
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