JP2008190447A - Solar heat utilizing system - Google Patents

Solar heat utilizing system Download PDF

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JP2008190447A
JP2008190447A JP2007026713A JP2007026713A JP2008190447A JP 2008190447 A JP2008190447 A JP 2008190447A JP 2007026713 A JP2007026713 A JP 2007026713A JP 2007026713 A JP2007026713 A JP 2007026713A JP 2008190447 A JP2008190447 A JP 2008190447A
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working fluid
heat
opening
closing
closing means
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Hideo Tomita
英夫 富田
Katsuzo Konakawa
勝蔵 粉川
Norio Yotsuya
規夫 肆矢
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar energy utilizing system reducing a head of a conveyance means. <P>SOLUTION: This system is provided with a working fluid circulation circuit 9 connecting the conveyance means 1, a heat collector 2, an expander 3 and a liquefying means 4 in this order, and an upstream and a downstream on/off means 11, 12 opening and closing the circulation circuit 9 of an upstream and a downstream of the heat collector 2. The system opens the upstream and the downstream on/off means 11/12 and drives the conveyance means 1 to store working fluid in the heat collector. The system closes the upstream and the downstream on/off means 11/12, stops the conveyance means 1, and then opens the downstream on/off means 12 when working fluid is gasified by the heat collector 2 collecting solar heat. Consequently, the conveyance means 1 can convey working fluid if the same has delivery pressure with which passage resistance, height difference or the like of the circulation circuit 9 can be covered. The conveyance means 1 of a low head can be employed and its cost can be reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は太陽熱を集熱して膨張機から出力を得る太陽熱利用システムに関するものである。   The present invention relates to a solar heat utilization system that collects solar heat and obtains output from an expander.

図３はこの従来の太陽熱利用システムを示すものである。この太陽熱利用システムは、太陽光を数倍から十数倍集光して集熱した太陽熱により動作流体を気化させる集光型集熱器１０１と、気体の動作流体を減圧させて回転出力を取り出す膨張機１０２と、水を流す冷却用熱交換器１０３と冷却用ファン１０４とにより気体の動作流体の顕熱と潜熱を奪い、液化した動作流体貯める液化手段１０５と、集光型集熱器１０１、膨張機１０２、液化手段１０５を順に連結し動作流体が流れる回路１０６と、集光型集熱器１０１と液化手段１０５とを連結する回路１０６に設けた動作流体を搬送する搬送手段１０７からなる。発電機１０８は膨張機１０２に連結している。   FIG. 3 shows this conventional solar heat utilization system. In this solar heat utilization system, the concentrating heat collector 101 that vaporizes the working fluid by the solar heat collected by collecting sunlight several times to several tens of times, and the rotational output is extracted by reducing the pressure of the gaseous working fluid. The expander 102, the cooling heat exchanger 103 for flowing water, and the cooling fan 104 deprive the sensible heat and latent heat of the gaseous working fluid and store the liquefied working fluid, and the condensing heat collector 101. The expander 102 and the liquefying means 105 are connected in order and a circuit 106 through which the working fluid flows, and the conveying means 107 for conveying the working fluid provided in the circuit 106 that connects the concentrating heat collector 101 and the liquefying means 105. . The generator 108 is connected to the expander 102.

上記太陽熱利用システムは、搬送手段１０７が動作流体を集光型集熱器１０１に送り、この集光型集熱器１０１が太陽熱を集光し集熱して動作流体を気化させる。   In the solar heat utilization system, the conveying means 107 sends the working fluid to the concentrating heat collector 101, and the concentrating heat collector 101 collects solar heat and collects it to vaporize the working fluid.

次に、気体の動作流体が膨張機１０２に流入し、膨張（減圧）しながら回転出力を発電機１０８に伝え、発電機８が発電する。   Next, the gaseous working fluid flows into the expander 102 and transmits the rotation output to the generator 108 while expanding (depressurizing), and the generator 8 generates power.

続いて、減圧した気体の動作流体が冷却ファン１０４に流入し、冷却用熱交換器１０３により水冷され顕熱を奪われ、さらに冷却用ファン１０４により空冷され潜熱を奪われ液化する。   Subsequently, the depressurized gaseous working fluid flows into the cooling fan 104 and is cooled with water by the cooling heat exchanger 103 to remove sensible heat, and further cooled by the cooling fan 104 to remove latent heat and liquefy.

この液化した動作流体が搬送手段１０７により再び集光型集熱器１０１に送られるサイクルを構成する（例えば、特許文献１参照）。
特開２００３−２２７３１５号公報 A cycle in which this liquefied working fluid is sent again to the concentrating heat collector 101 by the conveying means 107 is formed (for example, see Patent Document 1).
JP 2003-227315 A

しかしながら、上記従来の構成では、集光型集熱器１０１が動作流体を気化させるので、この集光型集熱器１０１の下流側の回路１０６の内部圧力が急激に上昇する（例えば、１０気圧４０℃→５０気圧１８０℃）。   However, in the above conventional configuration, the concentrating heat collector 101 vaporizes the working fluid, so that the internal pressure of the circuit 106 on the downstream side of the concentrating heat collector 101 rapidly increases (for example, 10 atm). 40 ° C. → 50 atm 180 ° C.).

この結果、搬送手段１０７は高揚程仕様が必要になるという課題を有していた。すなわち、高揚程仕様の搬送手段１０７は高コストであり、大型になる。また、曇り、雨や夜間には発電できないという課題を有していた。   As a result, the conveying means 107 has a problem that a high head specification is required. That is, the high-lift specification conveying means 107 is expensive and large. Moreover, it had the subject that it was cloudy, rainy, and cannot generate electricity at night.

本発明は上記課題を解決するもので、搬送手段の低揚程化と集熱した熱を必要な時に利用可能にした太陽熱利用システムを提供することを目的とするものである。   SUMMARY OF THE INVENTION The present invention solves the above-described problems, and an object of the present invention is to provide a solar heat utilization system that makes it possible to use the heat generated by lowering the transport means and collecting heat when necessary.

上記従来の課題を解決するために、動作流体を搬送する搬送手段と、集熱した太陽熱により動作流体を気化させる集熱器と、気体の動作流体を減圧させて出力を取り出す膨張機と、気体の動作流体を冷却し、液化した動作流体を貯める液化手段と、前記搬送手段、前記集熱器、前記膨張機、前記液化手段を順に連結して動作流体が循環流動するようにした循環回路と、前記集熱器上流の前記循環回路を開閉する上流開閉手段と、前記集熱器下流
の前記循環回路を開閉する下流開閉手段とを備え、前記上、下流開閉手段が開状態で前記搬送手段を駆動させることで動作流体を集熱器に蓄えるとともに、前記上、下流開閉手段が閉状態で前記搬送手段を停止させ、その後動作流体が太陽熱を集熱した前記集熱器により気化すると前記下流開閉手段を開にするようにしたものである。 In order to solve the above conventional problems, a conveying means for conveying a working fluid, a heat collector that vaporizes the working fluid by the collected solar heat, an expander that decompresses the gaseous working fluid and extracts an output, and a gas A liquefying means for cooling the working fluid and storing the liquefied working fluid; and a circulation circuit for connecting the conveying means, the heat collector, the expander, and the liquefying means in order so that the working fluid circulates and flows. An upstream opening / closing means for opening and closing the circulation circuit upstream of the heat collector; and a downstream opening / closing means for opening and closing the circulation circuit downstream of the heat collector; When the operating fluid is stored in the heat collector, the conveying means is stopped while the upper and lower opening / closing means are closed, and then the operating fluid is vaporized by the heat collector collecting solar heat, the downstream Opening and closing means In which it was to be in the open.

上流開閉手段と下流開閉手段とを開にした後、搬送手段が駆動して液化手段内の動作流体を搬送して集熱器に蓄え、上流開閉手段と前記下流開閉手段とを閉にすると共に搬送手段が停止する。集熱器が太陽熱を集熱して動作流体を気化させると、下流開閉手段を開にして気体の動作流体が膨張機に流入し、膨張（減圧）しながら出力を取り出す。続いて、減圧した気体の動作流体が液化手段に流入し、冷却され液化して貯まる。   After opening the upstream opening / closing means and the downstream opening / closing means, the conveying means is driven to convey the working fluid in the liquefying means and store it in the heat collector, and close the upstream opening / closing means and the downstream opening / closing means. The conveying means stops. When the heat collector collects solar heat to vaporize the working fluid, the downstream opening / closing means is opened, the gaseous working fluid flows into the expander, and the output is taken out while expanding (depressurizing). Subsequently, the depressurized gaseous working fluid flows into the liquefying means, and is cooled and liquefied and stored.

本発明によれば、搬送手段の低揚程化と集熱した熱を必要な時に利用可能にした太陽熱利用システムを提供できるものである。   ADVANTAGE OF THE INVENTION According to this invention, the solar heat utilization system which enabled utilization of the heat | fever which reduced the head of the conveyance means and collected heat when needed can be provided.

本発明のは、動作流体を搬送する搬送手段と、集熱した太陽熱により動作流体を気化させる集熱器と、気体の動作流体を減圧させて出力を取り出す膨張機と、気体の動作流体を冷却し、液化した動作流体を貯める液化手段と、前記搬送手段、前記集熱器、前記膨張機、前記液化手段を順に連結して動作流体が循環流動するようにした循環回路と、前記集熱器上流の前記循環回路を開閉する上流開閉手段と、前記集熱器下流の前記循環回路を開閉する下流開閉手段とを備え、前記上、下流開閉手段が開状態で前記搬送手段を駆動させることで動作流体を集熱器に蓄えるとともに、前記上、下流開閉手段が閉状態で前記搬送手段を停止させ、その後動作流体が太陽熱を集熱した前記集熱器により気化すると前記下流開閉手段を開にするようにしたものである。   The present invention includes a conveying means for conveying a working fluid, a heat collector that vaporizes the working fluid by the collected solar heat, an expander that decompresses the gaseous working fluid and extracts an output, and cools the gaseous working fluid A liquefying means for storing the liquefied working fluid, a circulation circuit in which the conveying means, the heat collector, the expander, and the liquefying means are connected in order so that the working fluid circulates, and the heat collector. An upstream opening / closing means for opening / closing the upstream circulation circuit and a downstream opening / closing means for opening / closing the circulation circuit downstream of the heat collector, and driving the conveying means with the upper and lower opening / closing means open. The working fluid is stored in the heat collector, and when the upper and downstream opening / closing means are closed, the conveying means is stopped, and when the working fluid is vaporized by the heat collector collecting solar heat, the downstream opening / closing means is opened. To do In the is.

先ずは、上流開閉手段と下流開閉手段とを開にした後、搬送手段が駆動して液化手段内の動作流体を搬送して循環回路を介して集熱器に蓄え、上流開閉手段と下流開閉手段とを閉にすると共に搬送手段が停止する。すなわち、搬送手段は循環回路の通路抵抗や高低差分等をカバーできる吐出圧力があれば搬送可能である。言い換えると、低揚程の搬送手段が採用でき、低コスト化が図れる。   First, after opening the upstream opening / closing means and the downstream opening / closing means, the conveying means is driven to convey the working fluid in the liquefying means and store it in the heat collector via the circulation circuit. The means is closed and the conveying means is stopped. In other words, the transport means can transport if there is a discharge pressure that can cover the passage resistance of the circulation circuit, the difference in height, and the like. In other words, a conveying means with a low head can be employed, and the cost can be reduced.

そして、集熱器が太陽熱を集熱して動作流体を気化させ、集熱器の内圧が上昇すると、下流開閉手段を開にして高温、高圧の気体の動作流体が膨張機に流入し、膨張（減圧）しながら出力を取り出す。続いて、減圧した気体の動作流体が液化手段に流入し、冷却され液化して液化手段に貯まる。   Then, when the heat collector collects solar heat to vaporize the working fluid and the internal pressure of the heat collector rises, the downstream open / close means is opened, and the working fluid of high-temperature and high-pressure gas flows into the expander and expands ( Take out the output while depressurizing. Subsequently, the decompressed gaseous working fluid flows into the liquefying means, is cooled and liquefied, and is stored in the liquefying means.

第２の発明は、集熱動作流体を搬送する集熱搬送手段と、集熱した太陽熱により集熱動作流体を加熱する集熱器と、集熱動作流体が動作流体を加熱する加熱用熱交換器と、前記集熱搬送手段、前記集熱器、前記加熱用熱交換器を順に連結して動作流体が循環流動するようにした集熱循環回路と、動作流体を搬送する搬送手段と、前記加熱用熱交換器を内蔵し動作流体を気化させる気化器と、気体の動作流体を減圧させて出力を取り出す膨張機と、気体の動作流体を冷却し、液化した動作流体を貯める液化手段と、前記搬送手段、前記気化器、前記膨張機、前記液化手段を順に連結して動作流体が循環流動するようにした循環回路と、前記気化器上流の前記循環回路を開閉する上流開閉手段と、前記気化器下流の前記循環回路を開閉する下流開閉手段とを備え、前記上、下流開閉手段が開状態で前記搬送手段を駆動させて動作流体を気化器に蓄えるとともに、前記上、下流開閉手段を閉状態で前記搬送手段を停止させ、その後動作流体が前記加熱用熱交換器により気化すると前記下流開閉手段を開にするようにしたものである。   The second invention is a heat collecting and conveying means for conveying a heat collecting working fluid, a heat collector for heating the heat collecting working fluid by the collected solar heat, and a heat exchange for heating in which the heat collecting working fluid heats the working fluid. A heat collecting circuit that connects the heat collecting and conveying means, the heat collector, and the heat exchanger for heating so that the working fluid circulates and flows, and a conveying means that conveys the working fluid, A vaporizer that incorporates a heat exchanger for heating and vaporizes the working fluid; an expander that decompresses the gaseous working fluid and extracts the output; a liquefaction means that cools the gaseous working fluid and stores the liquefied working fluid; A circulation circuit in which the conveying means, the vaporizer, the expander, and the liquefaction means are connected in order so that a working fluid circulates and flows; an upstream opening and closing means that opens and closes the circulation circuit upstream of the vaporizer; Downstream opening that opens and closes the circulation circuit downstream of the vaporizer And the upper and downstream opening / closing means are opened to drive the conveying means to store the working fluid in the vaporizer, and the upper and downstream opening / closing means are closed to stop the conveying means and then operate. When the fluid is vaporized by the heating heat exchanger, the downstream opening / closing means is opened.

先ずは、集熱搬送手段が集熱動作流体を、集熱循環回路を介して集熱器と加熱用熱交換器へ循環するように搬送する。そして、集熱器が太陽熱を集熱して集熱動作流体を加熱し、高温にする。すなわち、集熱器、加熱用熱交換器、集熱循環回路内の集熱動作流体は熱を蓄える作用がある。   First, the heat collecting and conveying means conveys the heat collecting working fluid so as to circulate to the heat collecting device and the heating heat exchanger via the heat collecting and circulating circuit. Then, the heat collector collects solar heat to heat the heat collection working fluid to a high temperature. That is, the heat collector, the heat exchanger for heating, and the heat collecting working fluid in the heat collecting circuit have an action of storing heat.

他方、上流開閉手段と下流開閉手段とを開にした後、搬送手段が駆動して液化手段内の動作流体を搬送して気化器に蓄え、上流開閉手段と下流開閉手段とを閉にすると共に搬送手段が停止する。すなわち、搬送手段は循環回路の通路抵抗や高低差分等をカバーできる吐出圧力があれば搬送可能である。言い換えると、低揚程の搬送手段が採用でき、低コスト化が図れる。   On the other hand, after opening the upstream opening / closing means and the downstream opening / closing means, the conveying means is driven to convey the working fluid in the liquefying means and store it in the vaporizer, and close the upstream opening / closing means and the downstream opening / closing means. The conveying means stops. In other words, the transport means can transport if there is a discharge pressure that can cover the passage resistance of the circulation circuit, the difference in height, and the like. In other words, a conveying means with a low head can be employed, and the cost can be reduced.

そして、加熱用熱交換器が気化器に蓄えた動作流体を気化させ、気化器の内圧が上昇すると、下流開閉手段を開にして気体の動作流体が膨張機に流入し、膨張（減圧）しながら出力を取り出す。続いて、減圧した気体の動作流体が液化手段に流入し、冷却され液化して貯まる。このように、太陽熱を集熱器、加熱用熱交換器、集熱循環回路内の集熱動作流体に蓄えるので、必要な時に集熱した熱を利用できる。言い換えると、太陽光があれば、集熱器が太陽熱を集熱できる。   When the heating heat exchanger vaporizes the working fluid stored in the vaporizer and the internal pressure of the vaporizer rises, the downstream open / close means is opened and the gaseous working fluid flows into the expander and expands (depressurizes). While taking out the output. Subsequently, the depressurized gaseous working fluid flows into the liquefying means, and is cooled and liquefied and stored. In this way, solar heat is stored in the heat collector, the heat exchanger for heating, and the heat collecting working fluid in the heat collecting circuit, so that the heat collected can be used when necessary. In other words, if there is sunlight, the heat collector can collect solar heat.

第３の発明は、特に、第１と２の発明の動作流体を蓄える集熱器または気化器に設けた動作流体の量を検知する量検知手段を備え、上流開閉手段と下流開閉手段とを開にして搬送手段を駆動して動作流体を集熱器または気化器に搬送し、前記量検知手段が所定の量を検知した場合前記上流開閉手段と前記下流開閉手段とを閉にすると共に前記搬送手段を停止することにより、液体の動作流体が下流開閉手段下流の循環回路に誤って流入することを防止できる。   In particular, the third invention includes an amount detecting means for detecting the amount of the working fluid provided in the heat collector or vaporizer for storing the working fluid of the first and second inventions, and includes an upstream opening / closing means and a downstream opening / closing means. Opening and driving the conveying means to convey the working fluid to the heat collector or vaporizer, and when the amount detecting means detects a predetermined amount, the upstream opening and closing means and the downstream opening and closing means are closed and the By stopping the conveying means, it is possible to prevent the liquid working fluid from inadvertently flowing into the circulation circuit downstream of the downstream opening / closing means.

具体的には、高温、高圧の気体の動作流体と共に液体の動作流体が膨張機へ流入することを防止できる。   Specifically, it is possible to prevent the liquid working fluid from flowing into the expander together with the high-temperature and high-pressure gaseous working fluid.

第４の発明は、特に、第１と２の発明の動作流体を蓄える集熱器または気化器を含む上流開閉手段と下流開閉手段との間の循環回路に設けた圧力や温度を検知する状態検知手段を備え、動作流体を前記集熱器または前記気化器に蓄え前記上流開閉手段と前記下流開閉手段とを閉にした後、前記状態検知手段の検知値が膨張機へ動作流体が流入できる状態を示す第１の閾値を超えた場合、前記下流開閉手段を開にすることにより、低温、低圧の気体の動作流体や液体の動作流体が膨張機へ流入することを防止できる。   The fourth invention is a state in which the pressure and temperature provided in the circulation circuit between the upstream opening / closing means and the downstream opening / closing means including the heat collector or vaporizer for storing the working fluid of the first and second inventions are detected. A detecting means, and after the working fluid is stored in the heat collector or the vaporizer and the upstream opening / closing means and the downstream opening / closing means are closed, the detected value of the state detecting means can flow into the expander When the first threshold value indicating the state is exceeded, by opening the downstream opening / closing means, it is possible to prevent a low-temperature, low-pressure gas working fluid or liquid working fluid from flowing into the expander.

第５の発明は、特に、第４の発明の状態検知手段の検知値が膨張機へ動作流体が流入できる状態を示す第１の閾値を超え、下流開閉手段を開にした後に、第１の閾値より小さい、状態検知手段の検知値が膨張機へ動作流体が流入できない状態を示す第２の閾値を下まわった場合、前記下流開閉手段を閉にすることにより、集熱器の能力が低下して低温、低圧の気体の動作流体や液体の動作流体が膨張機へ流入することを防止できる。   In particular, the fifth aspect of the invention includes the first detection value after the detection value of the state detection means of the fourth invention exceeds the first threshold value indicating the state in which the working fluid can flow into the expander, and the downstream opening / closing means is opened. If the detection value of the state detection means, which is smaller than the threshold value, falls below a second threshold value indicating that the working fluid cannot flow into the expander, the downstream collector is closed to reduce the capacity of the heat collector. Thus, it is possible to prevent a low-temperature, low-pressure gaseous working fluid or liquid working fluid from flowing into the expander.

第６の発明は、特に、第１と２の発明の動作流体を蓄える集熱器または気化器に設けた動作流体の量を検知する量検知手段を備え、前記量検知手段が少量を検知した場合、上流開閉手段と前記下流開閉手段とを開にして前記搬送手段を駆動して動作流体を前記集熱器または前記気化器に搬送することにより、バッチ処理的に太陽熱を利用でき、略連続して膨張機から出力が得られる。   In particular, the sixth aspect of the invention further comprises an amount detecting means for detecting the amount of the working fluid provided in the heat collector or vaporizer for storing the working fluid of the first and second inventions, and the amount detecting means detects a small amount. In this case, by opening the upstream opening / closing means and the downstream opening / closing means and driving the conveying means to convey the working fluid to the heat collector or the vaporizer, the solar heat can be used in a batch process, and is substantially continuous. The output is obtained from the expander.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によりこの発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１において、１は動作流体（ＨＦＣ１３４ａ冷媒）を搬送するポンプなどの搬送手段、２は太陽光を十数倍集光、集熱して動作流体を気化する集光型の集熱器（例えばパネル面積３０ｍ２）であり、動作流体が通過する銅製で外径８ｍｍ、内径６ｍｍの集熱管（図示せず）に太陽光を集光する略放物面等からなる反射面（図示せず）を内蔵している。 (Embodiment 1)
In FIG. 1, 1 is a transport means such as a pump for transporting a working fluid (HFC134a refrigerant), 2 is a concentrating collector (for example, a panel) that condenses sunlight and collects heat to vaporize the working fluid. the area 30 m 2), an outer diameter of 8mm in copper operation fluid passes, the heat collection tube having an inner diameter of 6 mm (sunlight into not shown) made of a substantially parabolic surface or the like for condensing light reflecting surface (not shown) Built-in.

３は気体の動作流体を減圧させて回転出力を取り出す膨張機（タービン）、４は液化した動作流体を貯める液化手段であり、冷却水を流す冷却用熱交換器５により気体の動作流体の顕熱を奪う第１冷却手段６と冷却用ファン７により気体の動作流体の顕熱と潜熱を奪う第２冷却手段８とからなり、冷却用熱交換器５の昇温した冷却水は貯湯タンク（図示せず）に貯められ、お風呂等に使われる。   Reference numeral 3 denotes an expander (turbine) for reducing the pressure of the gaseous working fluid and taking out the rotational output. Reference numeral 4 denotes a liquefaction means for storing the liquefied working fluid. The cooling heat exchanger 5 for flowing cooling water reveals the gaseous working fluid. The first cooling means 6 that takes heat away and the second cooling means 8 that takes away the sensible heat and latent heat of the gaseous working fluid by the cooling fan 7, and the cooling water heated by the cooling heat exchanger 5 is stored in a hot water storage tank ( (Not shown) and stored in a bath.

９は循環回路であり、搬送手段１、集熱器２、膨張機３、第１冷却手段６、第２冷却手段８を順に連結したもので、動作流体が循環流動する。１０は膨張機３に連結している発電機、１１は集熱器２上流の循環回路９を開閉する上流開閉手段、１２は集熱器２の下流の循環回路９を開閉する下流開閉手段、１３，１４は集熱器２と第２冷却手段８内の動作流体の量を検知する量検知手段（浮き子式や光検知式）、１５は集熱器２の下流側の循環回路９内に設けた圧力を検知する状態検知部、１６は太陽を検知する光センサである。   Reference numeral 9 denotes a circulation circuit, which is formed by sequentially connecting the conveying means 1, the heat collector 2, the expander 3, the first cooling means 6, and the second cooling means 8, and the working fluid circulates and flows. 10 is a generator connected to the expander 3, 11 is an upstream opening / closing means for opening / closing the circulation circuit 9 upstream of the heat collector 2, 12 is a downstream opening / closing means for opening / closing the circulation circuit 9 downstream of the heat collector 2, Reference numerals 13 and 14 denote amount detection means (floating type or light detection type) for detecting the amount of working fluid in the heat collector 2 and the second cooling means 8, and 15 denotes the inside of the circulation circuit 9 on the downstream side of the heat collector 2. The state detection part 16 which detects the pressure provided in 16 is an optical sensor which detects the sun.

制御部（図示せず）は、搬送手段１、膨張機３、冷却用熱交換器５、冷却用ファン７を制御する。   The control unit (not shown) controls the conveying means 1, the expander 3, the cooling heat exchanger 5, and the cooling fan 7.

以上のように構成された太陽熱利用システムにおいて、以下その動作を説明する。   The operation of the solar heat utilization system configured as described above will be described below.

先ずは、光センサ１６が太陽光を検知し、出力が第１の所定値（２００ｗ／ｍ２）を超え、量検知手段１４が第２冷却手段８の動作流体を検知し、かつ量検知手段１３が集熱器２を空と検知した場合、制御部は上流開閉手段１１と下流開閉手段１２を開にして、同時に搬送手段１を駆動して第２冷却手段８の液体の動作流体（例えば４０℃、１０気圧）を循環回路９を通して集熱器２に蓄える。 First, the light sensor 16 detects sunlight, the output exceeds the first predetermined value ( 200 w / m 2 ), the amount detection means 14 detects the working fluid of the second cooling means 8, and the amount detection means When the controller 13 detects that the heat collector 2 is empty, the control unit opens the upstream opening / closing means 11 and the downstream opening / closing means 12 and simultaneously drives the conveying means 1 to operate the liquid working fluid (for example, the second cooling means 8). (40 ° C., 10 atm) is stored in the heat collector 2 through the circulation circuit 9.

その後、制御部は上流開閉手段１１と下流開閉手段１２とを閉にするとともに、搬送手段１を停止する。   Thereafter, the control unit closes the upstream opening / closing means 11 and the downstream opening / closing means 12 and stops the conveying means 1.

すなわち、搬送手段１は循環回路９の通路抵抗や高低差分（例えば、屋根設けた集熱器２と庭に設けた第２冷却手段８の高低差）などをカバーできる吐出圧力があれば搬送可能である。言い換えると、低揚程の搬送手段１が採用でき、低コスト化が図れる。   That is, the transport means 1 can be transported if there is a discharge pressure that can cover the passage resistance of the circulation circuit 9 and the height difference (for example, the height difference between the heat collector 2 provided on the roof and the second cooling means 8 provided in the garden). It is. In other words, the transport means 1 with a low head can be employed, and the cost can be reduced.

そして、集熱器２では、太陽光が反射面により集熱管に集光して、動作流体が集熱した集熱管により加熱されて気化する（例えば１８０℃、５０気圧）。   In the heat collector 2, sunlight is condensed on the heat collecting tube by the reflecting surface, and the working fluid is heated and vaporized by the collected heat collecting tube (for example, 180 ° C., 50 atm).

続いて、集熱器２の内圧が上昇すると、制御部は下流開閉手段１２を開にして高温、高圧の気体の動作流体が膨張機３に流入する。   Subsequently, when the internal pressure of the heat collector 2 rises, the control unit opens the downstream opening / closing means 12 and a high-temperature, high-pressure gaseous working fluid flows into the expander 3.

膨張機３では、流入した気体の動作流体が膨張（減圧）しながら回転出力を発電機１０へ取り出し（例えば１１０℃、７気圧）、発電を開始する。   The expander 3 takes out the rotational output to the generator 10 (for example, 110 ° C., 7 atm) while the gas working fluid that has flowed in expands (depressurizes), and starts power generation.

続いて、液化手段４では、減圧した気体の動作流体が第１冷却手段６に流入し、水冷の冷却用熱交換器５に顕熱を奪われ、続いて第２冷却手段８に流入し空冷の冷却用ファン７に顕熱と潜熱を奪われ、液化して第２冷却手段８に貯まる。   Subsequently, in the liquefaction means 4, the decompressed gaseous working fluid flows into the first cooling means 6, sensible heat is taken away by the water-cooling cooling heat exchanger 5, and then flows into the second cooling means 8 and air-cooled. The cooling fan 7 is deprived of sensible heat and latent heat, liquefied and stored in the second cooling means 8.

さらに、詳しく動作を説明する。   Further, the operation will be described in detail.

制御部が上流開閉手段１１と下流開閉手段１２を開にして、同時に搬送手段１を駆動して第２冷却手段８の液体の動作流体を集熱器２に蓄える際に、量検知手段１３が第２の所定値（例えば集熱器２の全容量）を検知した場合、上流開閉手段１１と下流開閉手段１２とを閉にするとともに、搬送手段１を停止する。   When the control unit opens the upstream opening / closing means 11 and the downstream opening / closing means 12 and simultaneously drives the conveying means 1 to store the liquid working fluid of the second cooling means 8 in the heat collector 2, the quantity detection means 13 When the second predetermined value (for example, the total capacity of the heat collector 2) is detected, the upstream opening / closing means 11 and the downstream opening / closing means 12 are closed, and the conveying means 1 is stopped.

この制御により、液体の動作流体が下流開閉手段１２下流の循環回路９に誤って流入することを防止できる。すなわち、高温、高圧の気体の動作流体と共に液体の動作流体が膨張機２３へ流入することを防止できる。   By this control, the liquid working fluid can be prevented from inadvertently flowing into the circulation circuit 9 downstream of the downstream opening / closing means 12. That is, it is possible to prevent the liquid working fluid from flowing into the expander 23 together with the high-temperature and high-pressure gaseous working fluid.

言い換えると、動作流体の温度、圧力が低下するので、膨張機３での回転出力が十分に得られず、発電機１０による発電量が搬送手段１や冷却用ファン７の電力を下まわる事態を防止する。   In other words, since the temperature and pressure of the working fluid are lowered, a sufficient rotational output from the expander 3 cannot be obtained, and the amount of power generated by the generator 10 falls below the power of the conveying means 1 and the cooling fan 7. To prevent.

制御部が液体の動作流体を集熱器２に蓄え、上流開閉手段１１と下流開閉手段１２とを閉にした後に、動作流体は気化することにより急激に圧力上昇する（集熱器２を含む上流開閉手段１１と下流開閉手段１２との間の循環回路１９の内部圧力）。   After the control unit stores the liquid working fluid in the heat collector 2 and closes the upstream opening / closing means 11 and the downstream opening / closing means 12, the working fluid rapidly evaporates due to vaporization (including the heat collector 2). The internal pressure of the circulation circuit 19 between the upstream opening / closing means 11 and the downstream opening / closing means 12).

状態検知手段１５の検知値が膨張機３へ動作流体が流入できる状態を示す第１の閾値（例えば６０気圧）を超えた場合、下流開閉手段１２を開にする。すなわち、低温、低圧の気体の動作流体や液体の動作流体が膨張機３へ流入することを防止できる。   When the detection value of the state detection unit 15 exceeds a first threshold value (for example, 60 atmospheres) indicating a state in which the working fluid can flow into the expander 3, the downstream opening / closing unit 12 is opened. That is, it is possible to prevent a low-temperature, low-pressure gas working fluid or liquid working fluid from flowing into the expander 3.

言い換えると、膨張機３での回転出力が十分に得られず、発電機１０による発電量が搬送手段１や冷却用ファン７の電力を下まわる事態を防止する。   In other words, it is possible to prevent a situation in which the rotational output of the expander 3 is not sufficiently obtained and the amount of power generated by the generator 10 falls below the power of the conveying means 1 and the cooling fan 7.

その後、状態検知手段１５の検知値が第１の閾値より小さい、膨張機３へ動作流体が流入できない状態を示す第２の閾値（例えば５０気圧）を下まわった場合、下流開閉手段１２を閉にすることにより、低温、低圧の気体の動作流体が膨張機３へ流入することを防止できる。   Thereafter, when the detection value of the state detection means 15 is smaller than the first threshold value and falls below a second threshold value (eg, 50 atm) indicating that the working fluid cannot flow into the expander 3, the downstream opening / closing means 12 is closed. By doing so, it is possible to prevent a low-temperature, low-pressure gaseous working fluid from flowing into the expander 3.

状態検知手段１５の検知値が第２の閾値を下まわる原因として、太陽光が減り集熱器２の集熱能力低下が考えられる。なお、再び状態検知手段１５の検知値が第１の閾値を超えた場合、下流開閉手段１２を開にする。   As a cause that the detection value of the state detection means 15 falls below the second threshold value, sunlight is reduced and the heat collecting ability of the heat collector 2 is reduced. When the detection value of the state detection unit 15 exceeds the first threshold again, the downstream opening / closing unit 12 is opened.

また、量検知手段２が少量を検知した場合、制御部は、冷却用ファン７の運転と冷却用熱交換器５へ冷却水の送水を所定時間後（例えば１０分後）に停止して、気体の動作流体を全て液化して第２冷却手段８に貯める。   When the amount detection unit 2 detects a small amount, the control unit stops the operation of the cooling fan 7 and the cooling water supply to the cooling heat exchanger 5 after a predetermined time (for example, 10 minutes), All the gaseous working fluid is liquefied and stored in the second cooling means 8.

次に、制御部は再び上流開閉手段１１を開にして、同時に搬送手段１を駆動して第２冷却手段８の液体の動作流体を、循環回路９を通して集熱器２２に蓄える。すなわち、バッチ処理的に太陽熱を利用でき、略連続して膨張機３から出力が得られる。   Next, the control unit opens the upstream opening / closing means 11 again, and simultaneously drives the conveying means 1 to store the liquid working fluid of the second cooling means 8 in the heat collector 22 through the circulation circuit 9. That is, solar heat can be used in a batch process, and an output can be obtained from the expander 3 substantially continuously.

なお、光センサ６の出力が第３の所定値（例えば、１００ｗ／ｍ２）を下まわった場合、気象条件は曇り、黄砂、夜間と判断する。制御部が搬送手段１を駆動して第２冷却手段８の液体の動作流体を集熱器２に蓄える動作を禁止する。 When the output of the optical sensor 6 falls below a third predetermined value (for example, 100 w / m 2 ), the weather condition is determined to be cloudy, yellow sand, and night. The control unit prohibits the operation of driving the transport means 1 and storing the liquid working fluid of the second cooling means 8 in the heat collector 2.

（実施の形態２）
図２は本発明の実施の形態２を示し、図１と同作用を行う構成については便宜上同一符号を付し、具体的な説明は実施の形態１のものを援用する。 (Embodiment 2)
FIG. 2 shows a second embodiment of the present invention, and the same reference numerals are given for the sake of convenience to the configuration performing the same operation as in FIG. 1, and the specific description of the first embodiment is used.

実施の形態１と異なるところは、集熱動作流体（例えば、機械油）を搬送する集熱搬送手段１７と、集熱動作流体が動作流体（ＨＦＣ１３４ａ冷媒）を加熱する加熱用熱交換器１８と、集熱搬送手段１７、集熱器２、加熱用熱交換器１８を順に連結して集熱動作流体が循環流動するようにした集熱循環回路１９と、加熱用熱交換器１８を内蔵し動作流体を気化させる気化器２０と、搬送手段１、気化器２０、膨張機３、液化手段４を順に連結して動作流体が循環流動するようにした循環回路９と、気化器２０上流の循環回路９を開閉する上流開閉手段１１と、気化器２０下流の循環回路９を開閉する下流開閉手段１２とで構成した点である。   The difference from the first embodiment is that a heat collecting and conveying means 17 for conveying a heat collecting working fluid (for example, machine oil), a heating heat exchanger 18 for heating the working fluid (HFC 134a refrigerant) by the heat collecting working fluid, and A heat collecting and circulating circuit 19 in which the heat collecting working fluid circulates and flows by connecting the heat collecting and conveying means 17, the heat collecting device 2, and the heating heat exchanger 18 in order, and a heating heat exchanger 18. A vaporizer 20 for vaporizing the working fluid, a circulation circuit 9 in which the conveying means 1, the vaporizer 20, the expander 3, and the liquefying means 4 are connected in order so that the working fluid circulates and circulates upstream of the vaporizer 20. The upstream opening / closing means 11 for opening and closing the circuit 9 and the downstream opening / closing means 12 for opening and closing the circulation circuit 9 downstream of the vaporizer 20 are configured.

また、２１は気化器２０内の動作流体の量を検知する量検知手段、２２は気化器２０の下流側の循環回路９内に設けた圧力を検知する状態検知部、２３は集熱動作流体の温度を検知する温度検知部である。   Further, 21 is an amount detecting means for detecting the amount of the working fluid in the vaporizer 20, 22 is a state detecting portion for detecting the pressure provided in the circulation circuit 9 on the downstream side of the vaporizer 20, and 23 is a heat collecting working fluid. It is a temperature detection part which detects the temperature of this.

先ずは、光センサ１６が太陽光を検知し、出力が第１の所定値を超えた場合、制御部は集熱搬送手段１７を駆動して集熱動作流体を集熱循環回路１９を通して集熱器２、加熱用熱交換器１８へ順に循環させる。   First, when the light sensor 16 detects sunlight and the output exceeds the first predetermined value, the control unit drives the heat collecting and conveying means 17 to collect the heat collecting working fluid through the heat collecting and circulating circuit 19. It is made to circulate in order to the unit 2 and the heat exchanger 18 for heating.

その際に、集熱器２では、太陽光が反射面により集熱管に集光して、集熱動作流体が集熱した集熱管に加熱され、高温になる。すなわち、集熱器２、加熱用熱交換器１８、集熱循環回路１９内の集熱動作流体は熱を蓄える作用がある。   At that time, in the heat collector 2, sunlight is condensed on the heat collecting tube by the reflection surface, and the heat collecting working fluid is heated to the collected heat collecting tube to be high temperature. That is, the heat collection working fluid in the heat collector 2, the heat exchanger 18 for heating, and the heat collection circuit 19 has an action of storing heat.

他方、温度検知部２３が集熱循環回路１９内の集熱動作流体を第２の所定値（例えば、動作流体を気化するのに必要な温度２００℃）を超えたと検知した時に、量検知手段１４が第２冷却手段８の動作流体を検知し、かつ量検知手段２１が気化器２０を空と検知した場合、制御部は上流開閉手段１１と下流開閉手段１２を開にして、同時に搬送手段１を駆動して第２冷却手段８の液体の動作流体（例えば４０℃、１０気圧）を循環回路９を通して気化器２０に蓄える。   On the other hand, when the temperature detector 23 detects that the heat collecting working fluid in the heat collecting circuit 19 has exceeded a second predetermined value (for example, a temperature of 200 ° C. necessary for vaporizing the working fluid), the amount detecting means When 14 detects the working fluid of the second cooling means 8 and the amount detection means 21 detects that the vaporizer 20 is empty, the control unit opens the upstream opening / closing means 11 and the downstream opening / closing means 12 and simultaneously conveys the means. 1 is driven, and the liquid working fluid (for example, 40 ° C., 10 atm) of the second cooling means 8 is stored in the vaporizer 20 through the circulation circuit 9.

その後、量検知手段２１が第４の所定値（例えば気化器２０の全容量の半分）を検知した場合、制御部は上流開閉手段３１と下流開閉手段１２とを閉にすると共に搬送手段１を停止する。   Thereafter, when the amount detection means 21 detects a fourth predetermined value (for example, half of the total capacity of the vaporizer 20), the control unit closes the upstream opening / closing means 31 and the downstream opening / closing means 12 and turns the transport means 1 on. Stop.

すなわち、搬送手段１、１７は循環回路９、集熱循環回路１９の通路抵抗や高低差分（例えば、気化器２０と庭に設けた第２冷却手段８の高低差）などをカバーできる吐出圧力があれば搬送可能である。言い換えると、低揚程の搬送手段１、１７が採用でき、低コスト化が図れる。   That is, the conveying means 1 and 17 have a discharge pressure capable of covering the passage resistance of the circulation circuit 9 and the heat collection and circulation circuit 19 and the height difference (for example, the height difference between the vaporizer 20 and the second cooling means 8 provided in the garden). If there is, it can be transported. In other words, the transport means 1 and 17 having a low head can be employed, and the cost can be reduced.

そして、気化器２０では、動作流体が加熱用熱交換器１８の集熱動作流体により加熱されて気化するので、動作流体は急激に圧力上昇する。   In the vaporizer 20, since the working fluid is heated and vaporized by the heat collecting working fluid of the heating heat exchanger 18, the working fluid rapidly increases in pressure.

状態検知手段２２の検知値が膨張機３へ動作流体が流入できる状態を示す第１の閾値を超えた場合、制御部は下流開閉手段１２を開にして高温、高圧の気体の動作流体が膨張機３に流入する。   When the detection value of the state detection means 22 exceeds the first threshold value indicating that the working fluid can flow into the expander 3, the control unit opens the downstream opening / closing means 12 to expand the high-temperature and high-pressure gaseous working fluid. It flows into the machine 3.

膨張機３では、流入した気体の動作流体が膨張（減圧）しながら回転出力を発電機１０へ取り出す。続いて、液化手段４では、減圧した気体の動作流体が第１冷却手段６に流入し、水冷の冷却用熱交換器５に顕熱を奪われ、続いて第２冷却手段８に流入し空冷の冷却用ファン７に顕熱と潜熱を奪われ、液化して第２冷却手段８に貯まる。   In the expander 3, the rotational output is taken out to the generator 10 while the gas working fluid that has flowed in expands (depressurizes). Subsequently, in the liquefaction means 4, the decompressed gaseous working fluid flows into the first cooling means 6, sensible heat is taken away by the water-cooling cooling heat exchanger 5, and then flows into the second cooling means 8 and air-cooled. The cooling fan 7 is deprived of sensible heat and latent heat, liquefied and stored in the second cooling means 8.

このように、太陽熱を集熱器２、加熱用熱交換器１８、集熱循環回路１９内の集熱動作流体に蓄えるので、いつでも搬送手段１を駆動して膨張機３から出力が得られる。   In this way, solar heat is stored in the heat collecting working fluid in the heat collector 2, the heat exchanger 18 for heating, and the heat collecting circuit 19, so that the conveying means 1 can be driven at any time to obtain an output from the expander 3.

なお、気化器２０は加熱用熱交換器１８を内蔵する必要はなく、例えば、気化器２０を熱交換器のような形状にし、加熱用熱交換器１８を容器のような形状にしてもよい。   The vaporizer 20 does not need to incorporate the heat exchanger 18 for heating. For example, the vaporizer 20 may be shaped like a heat exchanger, and the heat exchanger 18 may be shaped like a container. .

また、実施の形態１、２の状態検知手段１５，２２は温度を検知しても同様の制御ができる。   Further, the state detection means 15 and 22 of the first and second embodiments can perform the same control even if the temperature is detected.

以上のように、本発明にかかる太陽熱利用システムによれば、搬送手段の低揚程化と集熱した熱を必要な時に利用可能にしたもので種々の太陽熱利用が可能となる。   As described above, according to the solar heat utilization system according to the present invention, it is possible to use various types of solar heat by reducing the lift of the conveying means and using the collected heat when necessary.

本発明の実施の形態１における太陽熱利用システムの構成図Configuration diagram of solar heat utilization system in Embodiment 1 of the present invention 本発明の実施の形態２における太陽熱利用システムの構成図Configuration diagram of solar heat utilization system in Embodiment 2 of the present invention 従来の太陽熱利用システムの構成図Configuration diagram of conventional solar heat utilization system

符号の説明Explanation of symbols

１ 搬送手段
２ 集熱器
３ 膨張機
４ 液化手段
９ 循環回路
１１ 上流開閉手段
１２ 下流開閉手段
１３，１４，２１ 量検知手段
１５，２２ 状態検知手段
１７ 集熱搬送手段
１８ 加熱用熱交換器
１９ 集熱循環回路
２０ 気化器 DESCRIPTION OF SYMBOLS 1 Conveying means 2 Heat collector 3 Expander 4 Liquefaction means 9 Circulating circuit 11 Upstream opening / closing means 12 Downstream opening / closing means 13, 14, 21 Quantity detecting means 15, 22 State detecting means 17 Heat collecting and conveying means 18 Heat exchanger 19 for heating 19 Heat collection circuit 20 Vaporizer

Claims (6)

動作流体を搬送する搬送手段と、集熱した太陽熱により動作流体を気化させる集熱器と、気体の動作流体を減圧させて出力を取り出す膨張機と、気体の動作流体を冷却し、液化した動作流体を貯める液化手段と、前記搬送手段、前記集熱器、前記膨張機、前記液化手段を順に連結して動作流体が循環流動するようにした循環回路と、前記集熱器上流の前記循環回路を開閉する上流開閉手段と、前記集熱器下流の前記循環回路を開閉する下流開閉手段とを備え、前記上、下流開閉手段が開状態で前記搬送手段を駆動させることで動作流体を集熱器に蓄えるとともに、前記上、下流開閉手段が閉状態で前記搬送手段を停止させ、その後動作流体が太陽熱を集熱した前記集熱器により気化すると前記下流開閉手段を開にするようにした太陽熱利用システム。 Conveying means for conveying the working fluid, a heat collector for vaporizing the working fluid by the collected solar heat, an expander for reducing the pressure of the gaseous working fluid and taking out the output, and cooling and liquefying the gaseous working fluid A liquefaction means for storing fluid, a circulation circuit in which the transport means, the heat collector, the expander, and the liquefaction means are connected in order so that a working fluid circulates and flows, and the circulation circuit upstream of the heat collector An upstream opening / closing means for opening and closing and a downstream opening / closing means for opening / closing the circulation circuit downstream of the heat collector, and collecting the working fluid by driving the conveying means with the upper and lower opening / closing means open. Solar heat that is stored in a storage device and that the upper and lower opening / closing means are closed and the conveying means is stopped, and then the downstream opening / closing means is opened when the working fluid is vaporized by the collector that collects solar heat. Use Temu. 集熱動作流体を搬送する集熱搬送手段と、集熱した太陽熱により集熱動作流体を加熱する集熱器と、集熱動作流体が動作流体を加熱する加熱用熱交換器と、前記集熱搬送手段、前記集熱器、前記加熱用熱交換器を順に連結して動作流体が循環流動するようにした集熱循環回路と、動作流体を搬送する搬送手段と、前記加熱用熱交換器を内蔵し動作流体を気化させる気化器と、気体の動作流体を減圧させて出力を取り出す膨張機と、気体の動作流体を冷却し、液化した動作流体を貯める液化手段と、前記搬送手段、前記気化器、前記膨張機、前記液化手段を順に連結して動作流体が循環流動するようにした循環回路と、前記気化器上流の前記循環回路を開閉する上流開閉手段と、前記気化器下流の前記循環回路を開閉する下流開閉手段とを備え、前記上、下流開閉手段が開状態で前記搬送手段を駆動させて動作流体を気化器に蓄えるとともに、前記上、下流開閉手段を閉状態で前記搬送手段を停止させ、その後動作流体が前記加熱用熱交換器により気化すると前記下流開閉手段を開にするようにした太陽熱利用システム。 Heat collecting and conveying means for conveying the heat collecting working fluid, a heat collector for heating the heat collecting working fluid by the collected solar heat, a heating heat exchanger for heating the working fluid by the heat collecting working fluid, and the heat collecting Conveying means, the heat collector, and the heat exchanger for heating are connected in order to circulate and flow the working fluid, conveying means for conveying the working fluid, and the heat exchanger for heating. A built-in vaporizer that vaporizes the working fluid; an expander that decompresses the gaseous working fluid to extract output; a liquefying means that cools the gaseous working fluid and stores the liquefied working fluid; the transport means; and the vaporization A circulation circuit in which a working fluid is circulated and connected in this order by connecting a condenser, the expander, and the liquefaction means; upstream opening and closing means for opening and closing the circulation circuit upstream of the vaporizer; and the circulation downstream of the vaporizer And downstream opening / closing means for opening and closing the circuit The conveying means is driven with the upper and downstream opening / closing means open to store the working fluid in the vaporizer, and the conveying means is stopped with the upper and downstream opening / closing means closed, and then the working fluid is used for the heating. A solar heat utilization system in which the downstream opening / closing means is opened when vaporized by a heat exchanger. 動作流体を蓄える集熱器または気化器に設けた動作流体の量を検知する量検知手段を備え、上、下流開閉手段を開状態で搬送手段を駆動して動作流体を集熱器または気化器に搬送し、前記量検知手段が所定の量を検知した場合に前記上、下流開閉手段を閉にするととともに、前記搬送手段を停止するようにした請求項１または２記載の太陽熱利用システム。 An amount detecting means for detecting the amount of the working fluid provided in the heat collector or vaporizer for storing the working fluid is provided, and the conveying means is driven by the upper and downstream opening / closing means being opened to drive the working fluid to the heat collector or vaporizer The solar heat utilization system according to claim 1 or 2, wherein when the amount detecting means detects a predetermined amount, the upper and lower opening / closing means are closed and the conveying means is stopped. 動作流体を蓄える集熱器または気化器を含む上流開閉手段と下流開閉手段との間の循環回路に設けた圧力や温度を検知する状態検知手段を備え、動作流体を前記集熱器または前記気化器に蓄え前記上、下流開閉手段を閉にした後、前記状態検知手段の検知値が膨張機へ動作流体が流入できる状態を示す第１の閾値を超えた場合、前記下流開閉手段を開にするようにした請求項１または２記載の太陽熱利用システム。 A state detection means for detecting pressure and temperature provided in a circulation circuit between the upstream opening / closing means and the downstream opening / closing means including a heat collector or vaporizer for storing the working fluid, and the working fluid is collected by the heat collector or the vaporization; When the detection value of the state detection means exceeds a first threshold value indicating the state in which the working fluid can flow into the expander after the upper and downstream opening / closing means are closed, the downstream opening / closing means is opened. The solar-heat utilization system of Claim 1 or 2 made to do. 状態検知手段の検知値が膨張機へ動作流体が流入できる状態を示す第１の閾値を超え、下流開閉手段を開にした後に、第１の閾値より小さい、状態検知手段の検知値が膨張機へ動作流体が流入できない状態を示す第２の閾値を下まわった場合、前記下流開閉手段を閉にする請求項４記載の太陽熱利用システム。 After the detection value of the state detection means exceeds the first threshold value indicating the state in which the working fluid can flow into the expander and the downstream opening / closing means is opened, the detection value of the state detection means is less than the first threshold value. The solar-heat utilization system of Claim 4 which closes the said downstream opening-and-closing means when the 2nd threshold value which shows the state which cannot flow in to a working fluid falls below. 動作流体を蓄える集熱器または気化器に設けた動作流体の量を検知する量検知手段を備え、前記量検知手段が少量を検知した場合、上、下流開閉手段を開にして前記搬送手段を駆動することで動作流体を前記集熱器または前記気化器に搬送するようにした請求項１または２記載の太陽熱利用システム。 An amount detecting means for detecting the amount of the working fluid provided in the heat collector or vaporizer for storing the working fluid; and when the amount detecting means detects a small amount, the downstream opening / closing means is opened and the conveying means is opened. The solar heat utilization system according to claim 1 or 2, wherein the working fluid is transported to the heat collector or the vaporizer by being driven.
JP2007026713A 2007-02-06 2007-02-06 Solar heat utilizing system Pending JP2008190447A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013227923A (en) * 2012-04-26 2013-11-07 Homei Kyo Power generation system using solar heat collector
JP2014031787A (en) * 2012-08-06 2014-02-20 Toshiba Corp Power generation plant and heat supply method
WO2024014403A1 (en) * 2022-07-12 2024-01-18 キヤノン株式会社 System for supplying carbon dioxide to plants

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013227923A (en) * 2012-04-26 2013-11-07 Homei Kyo Power generation system using solar heat collector
JP2014031787A (en) * 2012-08-06 2014-02-20 Toshiba Corp Power generation plant and heat supply method
US9512826B2 (en) 2012-08-06 2016-12-06 Kabushiki Kaisha Toshiba Power plant and heat supply method
WO2024014403A1 (en) * 2022-07-12 2024-01-18 キヤノン株式会社 System for supplying carbon dioxide to plants

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