TW202108872A - Electricity generating system, and electricity generation method - Google Patents

Electricity generating system, and electricity generation method Download PDF

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TW202108872A
TW202108872A TW109116682A TW109116682A TW202108872A TW 202108872 A TW202108872 A TW 202108872A TW 109116682 A TW109116682 A TW 109116682A TW 109116682 A TW109116682 A TW 109116682A TW 202108872 A TW202108872 A TW 202108872A
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Taiwan
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heat
power generation
medium
temperature
vaporization
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TW109116682A
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Chinese (zh)
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柿崎信郎
古関恵一
池上康之
安永健
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日商日揮環球股份有限公司
日商Jxtg能源股份有限公司
國立大學法人佐賀大學
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Priority to JP2019-095521 priority Critical
Priority to JP2019095521 priority
Priority to JP2019-176005 priority
Priority to JP2019176005A priority patent/JP6928937B2/en
Application filed by 日商日揮環球股份有限公司, 日商Jxtg能源股份有限公司, 國立大學法人佐賀大學 filed Critical 日商日揮環球股份有限公司
Publication of TW202108872A publication Critical patent/TW202108872A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether

Abstract

An electricity generating system (1) for generating electricity using waste heat generated by a facility that employs liquefied gas is provided with: an acquiring unit (2) for acquiring a heat medium; a vaporizing device (104) for vaporizing the liquefied gas using the heat medium as a heat source; a low-temperature heat medium that uses cold energy heat exchanged and discharged by the vaporizing device as a heat source; and a heat engine which operates by generating a cycle of vaporization and condensation in an operating medium using a temperature difference with a hot-heat heat medium having hot heat with a higher temperature than the low-temperature heat medium.

Description

發電系統及發電方法Power generation system and power generation method

本發明係關於一種利用將LNG汽化時之餘熱進行發電之發電系統及發電方法。 本申請案係基於且主張2019年5月21日提出申請之日本專利申請案第2019-095521號及2019年9月26日提出申請之日本專利申請案第2019-176005號之優先權,並将其內容援用於此。The present invention relates to a power generation system and a power generation method that utilizes waste heat when LNG is vaporized to generate power. This application is based on and claims the priority of Japanese Patent Application No. 2019-095521 filed on May 21, 2019 and Japanese Patent Application No. 2019-176005 filed on September 26, 2019, and will Its content is used here.

於赤道正下方之地域,通過1年,太陽能量蓄積於海洋之表層。因該能量於夜間亦穩定,故開發有利用海面附近較暖之表層水與深海較冷之深層海水之溫度差之海洋溫度差發電。海洋溫度差發電係利用蘭金循環之發電方法,其使用表層水,使氨等低沸點之作動介質汽化,且運作渦輪,使用汲取自距海面1000 [m]左右之深海之3[℃]左右之深層海水冷卻並凝結汽化之作動介質。In the area directly below the equator, solar energy accumulates on the surface of the ocean after one year. Because the energy is stable at night, it is developed to use the temperature difference between the warmer surface water near the sea surface and the colder deep seawater in the deep sea to generate electricity. Ocean temperature difference power generation is a method of generating electricity using the Rankine cycle. It uses surface water to vaporize a low-boiling operating medium such as ammonia, and operates a turbine. It uses about 3[℃] drawn from the deep ocean about 1000 [m] from the sea surface. The deep seawater cools and condenses and vaporizes the actuating medium.

為獲得海洋溫度差發電所需之溫度差,需利用較600~1000 [m]左右更深之深層海水,其普及之阻礙在於,取水配管之建設成本或自深海汲取深層海水之泵之使用成本高昂,且可設置之場所有制約。In order to obtain the temperature difference required for power generation by the ocean temperature difference, it is necessary to use deep seawater deeper than about 600~1000 [m]. The obstacle to its popularization is the high cost of construction of water intake pipes or the use of pumps to draw deep seawater from the deep sea. , And can set all the restrictions.

另,於東南亞地域之島嶼部,藉由火力發電供給電力。於該等地域中之火力發電,進行主要使用重油之內燃力發電。內燃力發電係使將重油用作燃料之柴油機等內燃機構運作,自連結於內燃機構之輸出軸之發電機獲得電力者。然而,使重油燃燒之內燃力發電有二氧化碳或氮氧化物之排出量較多而引發環境問題的顧慮。因此,近年來作為內燃力發電之代替,逐漸導入使用液化天然氣(LNG:Liquefied Natural Gas)之火力發電。LNG火力發電與內燃力發電相比可減少二氧化碳等之排出量。In addition, in the islands of Southeast Asia, electricity is supplied by thermal power generation. For thermal power generation in these regions, internal combustion power generation mainly uses heavy oil. Internal combustion power generation is the operation of an internal combustion engine such as a diesel engine that uses heavy oil as fuel, and electricity is obtained from a generator connected to the output shaft of the internal combustion engine. However, the large amount of carbon dioxide or nitrogen oxide emitted from the internal combustion power generated by burning heavy oil causes environmental concerns. Therefore, in recent years, as an alternative to internal combustion power generation, thermal power generation using liquefied natural gas (LNG: Liquefied Natural Gas) has been gradually introduced. Compared with internal combustion power generation, LNG thermal power generation can reduce carbon dioxide and other emissions.

研究LNG冷卻至-162[℃]成為液體之狀態,且利用該冷溫之潛熱進行溫度差發電(例如參照專利文獻1及專利文獻2)。根據專利文獻1及專利文獻2記載之發電系統,於LNG火力發電附帶有熱機構。該熱機構係使作動介質產生汽化與凝結之循環而運作者,利用LNG之冷熱以凝結器使汽化之作動介質凝結。It is studied that LNG is cooled to -162[°C] into a liquid state, and the latent heat of the cold temperature is used to generate temperature difference power generation (for example, refer to Patent Document 1 and Patent Document 2). According to the power generation system described in Patent Document 1 and Patent Document 2, a thermal mechanism is attached to the LNG thermal power generation. The heating mechanism is to make the actuating medium generate a cycle of vaporization and condensation to operate, and use the cold and heat of LNG to condense the vaporized actuating medium with the condenser.

且於該發電系統中,於使LNG蒸發汽化之步驟中使用將LNG加熱之汽化裝置。根據該汽化裝置,使熱介質接觸流通LNG之管路之外部,而於LNG與熱介質之間進行熱交換,使LNG氣體化。 [先前技術文獻] [專利文獻]In the power generation system, a vaporization device that heats LNG is used in the step of vaporizing LNG. According to this vaporization device, the heat medium is brought into contact with the outside of the pipeline through which the LNG flows, and heat exchange is performed between the LNG and the heat medium to gasify the LNG. [Prior Technical Literature] [Patent Literature]

[專利文獻1]日本專利第5875253號公報 [專利文獻2]日本特開昭57-171009號公報[Patent Document 1] Japanese Patent No. 5875253 [Patent Document 2] Japanese Patent Application Laid-Open No. 57-171009

[發明所欲解決之問題][The problem to be solved by the invention]

根據專利文獻1及專利文獻2所記載之發電系統,使用海水使LNG汽化,於該步驟中排出由LNG冷卻之海水。然而,若將經冷卻之海水直接放出至海中,則有產生對周圍之生態系統造成影響等之環境問題之虞。若使海水流通於裝置,則貝殼等生物附著於配管或熱交換器,使裝置之熱交換性能降低,故需定期分解、洗淨裝置。根據專利文獻1及專利文獻2所記載之發電系統,未考慮對放出經冷卻之海水之環境對策、或對汽化裝置等之生物污染之對策。According to the power generation system described in Patent Document 1 and Patent Document 2, seawater is used to vaporize LNG, and the seawater cooled by the LNG is discharged in this step. However, if the cooled seawater is directly discharged into the sea, it may cause environmental problems such as affecting the surrounding ecosystem. If seawater is circulated through the device, organisms such as shells will adhere to the piping or heat exchanger, which will reduce the heat exchange performance of the device. Therefore, the device needs to be decomposed and cleaned regularly. According to the power generation system described in Patent Document 1 and Patent Document 2, no consideration is given to environmental countermeasures against the release of cooled seawater, or countermeasures against biological pollution such as vaporization equipment.

本發明之目的在於提供一種可使熱效率提高且減少環境負荷,並減少維護成本之使用溫度差發電之發電系統及發電方法。 [解決問題之技術手段]The object of the present invention is to provide a power generation system and a power generation method that can improve thermal efficiency, reduce environmental load, and reduce maintenance costs for power generation using temperature differences. [Technical means to solve the problem]

本發明係一種發電系統,其係利用由使用液化氣體之設備產生之餘熱進行發電者,且具備:取得部,其取得熱介質;汽化裝置,其將上述熱介質作為熱源而將上述液化氣體汽化;及熱機構,其使用低溫熱介質與溫熱熱介質之溫度差,使作動介質產生汽化與凝結之循環而運作,上述低溫熱介質以由上述汽化裝置進行熱交換而排出之冷熱為熱源,上述溫熱熱介質具有與上述低溫熱介質相比溫度較高的溫熱。The present invention is a power generation system that uses waste heat generated by equipment that uses liquefied gas to generate electricity, and includes: an acquisition unit that acquires a heat medium; and a vaporization device that vaporizes the liquefied gas by using the heat medium as a heat source ; And a thermal mechanism, which uses the temperature difference between a low-temperature heating medium and a warm heating medium to cause the actuating medium to produce a cycle of vaporization and condensation to operate. The low-temperature heating medium uses the cold and heat discharged by the vaporization device for heat exchange As a heat source, the warm heat medium has a higher temperature than the low temperature heat medium.

根據本發明,藉由對用於溫度差發電之熱機構之冷熱源使用液化氣體,而無需汲取深海之深層海水,可減少使用成本或設備成本。According to the present invention, by using liquefied gas for the cold and heat source of the thermal mechanism used for temperature difference power generation, without drawing the deep sea water of the deep sea, the use cost or the equipment cost can be reduced.

本發明亦可構成為上述取得部取得具有至少TOC 1.3 [mg/l]以下之特定條件之水作為上述熱介質。The present invention may also be configured such that the acquisition unit acquires water having a specific condition of at least TOC 1.3 [mg/l] or less as the heat medium.

根據本發明,若可確保滿足特定條件之水則可以液化氣體產生低溫熱介質,故可減少裝置內之生物污染,並可減少維護成本。According to the present invention, if water that meets specific conditions can be ensured, the gas can be liquefied to produce a low-temperature heat medium, so the biological pollution in the device can be reduced, and the maintenance cost can be reduced.

本發明亦可構成為上述取得部取得具有至少深100 [m]以上之特定條件之海水作為上述熱介質。The present invention may also be configured such that the acquisition unit acquires seawater having a specific condition with a depth of at least 100 [m] or more as the heat medium.

根據本發明,因可將滿足特定條件之海水作為低溫熱介質之水源,故可減少汲取之使用成本或設備成本。According to the present invention, since seawater meeting specific conditions can be used as the water source of the low-temperature heat medium, the use cost or equipment cost of extraction can be reduced.

本發明亦可構成為使上述水流通於上述汽化裝置而防止生物附著於上述汽化裝置之內部。The present invention may also be configured to circulate the water through the vaporization device to prevent organisms from adhering to the inside of the vaporization device.

根據本發明,可使用特定條件之水或海水作為汽化裝置之熱介質,藉此可防止生物污染,並可減少維護成本。According to the present invention, water or seawater under specific conditions can be used as the heating medium of the vaporization device, thereby preventing biological pollution and reducing maintenance costs.

本發明亦可構成為進而具備:附帶設備,其利用流通於上述熱機構之上述溫熱熱介質之溫度或流通於上述熱機構之上述低溫熱介質之溫度。The present invention may also be configured to further include additional equipment that utilizes the temperature of the warm heating medium circulating in the heating mechanism or the temperature of the low-temperature heating medium circulating in the heating mechanism.

根據本發明,可藉由利用餘熱之附帶設備使熱效率提高,且減少放出溫熱熱介質或低溫熱介質時之溫度差,並減少對環境之不良影響。According to the present invention, the heat efficiency can be improved by using the auxiliary equipment of the waste heat, and the temperature difference when the warm heating medium or the low temperature heating medium is discharged can be reduced, and the adverse impact on the environment can be reduced.

本發明亦可構成為進而具備利用流通於上述熱機構之上述低溫熱介質之冷溫之空調設備。The present invention may also be configured to further include an air conditioner that utilizes the cold temperature of the low-temperature heat medium circulating in the heat mechanism.

根據本發明,可利用具有流通於熱機構之後之低溫熱介質之冷熱的能量,使熱效率提高,且可減少直接放出海水等低溫熱介質時對環境之不良影響。According to the present invention, the energy of cold and heat with a low-temperature heat medium circulating after the heating mechanism can be used to improve the thermal efficiency and reduce the adverse impact on the environment when the low-temperature heat medium such as seawater is directly released.

本發明亦可構成為進而具備:養殖設備,其使用流通於上述熱機構之上述海水進行海產物之養殖。The present invention may also be configured to further include a culture facility that uses the seawater circulating in the thermal mechanism to culture marine products.

根據本發明,可利用滿足特定條件之海水所包含之成分進行海產物之養殖,並可於設置場所之周邊創造新產業。According to the present invention, the ingredients contained in seawater meeting specific conditions can be used to cultivate seafood, and new industries can be created around the installation site.

本發明亦可構成為進而具備:工廠,其製造由流通於上述熱機構之上述海水產生之副產品。The present invention may also be configured to further include a factory that manufactures by-products generated from the seawater circulating in the thermal mechanism.

根據本發明,可使製造利用滿足特定條件之海水所包含之成分之副產物之工廠運作,並可於設置場所之周邊創造新產業。According to the present invention, it is possible to operate a factory that manufactures by-products using components contained in seawater that meets specific conditions, and to create new industries around the installation site.

本發明亦可構成為進而具備:設備,其使用流通於上述熱機構之上述海水進行農作物之栽培或貯藏。The present invention may also be configured to further include an apparatus for cultivating or storing crops using the seawater circulating in the thermal mechanism.

根據本發明,可運作利用滿足特定條件之海水所包含之成分進行農作物之栽培或貯藏之設備,並可於設置場所之周邊創造新產業。According to the present invention, it is possible to operate equipment for cultivating or storing crops using ingredients contained in seawater that meets specific conditions, and to create new industries around the installation site.

本發明亦可構成為進而具備:再生部,其收集自上述液化氣體產生之揮發氣體,利用剩餘電力凝結上述揮發氣體而產生再生液化氣體。The present invention may also be configured to further include a regeneration unit that collects the volatile gas generated from the above-mentioned liquefied gas, and condenses the above-mentioned volatile gas using the surplus power to generate a regenerated liquefied gas.

根據本發明,因將貯藏液化氣體時產生之揮發氣體使用夜間等發電需要較低之時間帶之剩餘電力產生再生液化氣體,故可由再生液化氣體實質性蓄電。According to the present invention, the volatile gas generated when the liquefied gas is stored is used to generate the regenerative liquefied gas by using the surplus power in a time zone where power generation is relatively low such as at night, so that the regenerative liquefied gas can substantially store electricity.

本發明亦可構成為上述取得部具備:第1取得部,其取得成為將上述作動介質汽化之熱源之第1熱介質;及第2取得部,其取得成為將上述液化氣體汽化且凝結上述作動介質之熱源之第2熱介質。The present invention may also be configured such that the acquisition unit includes: a first acquisition unit that acquires a first heat medium that becomes a heat source for vaporizing the actuating medium; and a second acquisition section that acquires the actuation by vaporizing the liquefied gas and condensing the actuation medium. The second heat medium is the heat source of the medium.

根據本發明,可利用第1取得部取得之第1熱介質作為熱機構之高溫側之熱源,並可利用第2取得部取得之第2熱介質作為熱機構之低溫側之熱源。According to the present invention, the first heat medium obtained by the first obtaining unit can be used as the heat source on the high temperature side of the heat mechanism, and the second heat medium obtained by the second obtaining unit can be used as the heat source on the low temperature side of the heat mechanism.

本發明亦可構成為具備設置於上述第1取得部與上述熱機構之間之第1中間設備,且上述第1中間設備供以上述第1熱介質為熱源之上述溫熱熱介質循環。The present invention may also be configured to include a first intermediate device provided between the first acquisition unit and the heating mechanism, and the first intermediate device may circulate the warm heating medium using the first heating medium as a heat source.

根據本發明,藉由以第1中間設備使將上述第1取得部取得之第1熱介質作為熱源之溫熱熱介質循環並作為熱機構之熱源而可減少熱機構之第1熱介質所致之污染。According to the present invention, by using the first intermediate device to circulate the warm heat medium that uses the first heat medium obtained by the first acquisition unit as the heat source and use it as the heat source of the heat mechanism, the heat caused by the first heat medium of the heat mechanism can be reduced. Of pollution.

本發明亦可構成為具備:第2中間設備,其設置於上述第2取得部與上述汽化裝置之間;且上述第2中間設備供藉由以上述第2熱介質為熱源之上述汽化裝置予以冷卻之上述低溫熱介質循環。The present invention may also be configured to include: a second intermediate device provided between the second obtaining section and the vaporization device; and the second intermediate device may be provided by the vaporization device using the second heat medium as a heat source The cooling of the above-mentioned low-temperature heat medium is circulating.

根據本發明,藉由以第2中間設備使將上述第2取得部取得之第2熱介質作為熱源之溫熱熱介質循環並作為熱機構之熱源而可減少熱機構之第2熱介質所致之污染。According to the present invention, by using the second intermediate device to circulate the warm heat medium that uses the second heat medium obtained by the second acquisition unit as the heat source and use it as the heat source of the heat mechanism, the heat caused by the second heat medium of the heat mechanism can be reduced. Of pollution.

本發明係一種發電方法,其係利用由使用液化氣體之設備產生之餘熱進行發電者,且具備以下步驟:取得熱介質;以上述熱介質為熱源,於汽化裝置中將上述液化氣體汽化;以藉由上述汽化裝置之熱交換而排出之冷熱為熱源,將低溫熱介質冷卻;取得具有與上述低溫熱介質相比溫度較高之溫熱的溫熱熱介質;以上述溫熱熱介質為熱源使作動介質汽化,而由熱機構之發電機進行發電;及以上述低溫熱介質為熱源,將流通於上述發電機之汽化後之上述作動介質凝結。The present invention is a power generation method that utilizes waste heat generated by equipment using liquefied gas for power generation, and has the following steps: obtaining a heat medium; using the heat medium as a heat source to vaporize the liquefied gas in a vaporization device; The cold heat discharged by the heat exchange of the above-mentioned vaporization device is used as a heat source to cool the low-temperature heat medium; obtain a warm heat medium having a higher temperature than the above-mentioned low-temperature heat medium; use the above-mentioned warm heat medium The actuating medium is vaporized for the heat source, and the generator of the heat mechanism generates electricity; and the low-temperature heat medium is used as the heat source to condense the actuating medium after the vaporization flowing in the generator.

根據本發明,藉由對溫度差發電所使用之外燃機構之冷熱源使用液化氣體,而無需汲取深海之深層海水,並可減少使用成本或設備成本。 [發明之效果]According to the present invention, by using liquefied gas for the cold and heat source of the external combustion mechanism used in the temperature difference power generation, there is no need to draw the deep sea water of the deep sea, and the use cost or the equipment cost can be reduced. [Effects of Invention]

根據本發明,可使熱效率提高並減少環境負荷,且減少維護成本。According to the present invention, the thermal efficiency can be improved, the environmental load can be reduced, and the maintenance cost can be reduced.

以下,參照圖式,且對本發明之實施形態之發電系統及發電方法進行說明。Hereinafter, referring to the drawings, the power generation system and the power generation method of the embodiment of the present invention will be described.

[第1實施形態] 如圖1所示,發電系統1具備:發電設備100,其利用LNG(液化氣體);及溫度差發電裝置200,其利用由發電設備100產生之餘熱進行溫度差發電。發電設備100係例如設置於地面之LNG發電設備。[First Embodiment] As shown in FIG. 1, the power generation system 1 includes: a power generation facility 100 that uses LNG (liquefied gas); and a temperature difference power generation device 200 that uses waste heat generated by the power generation facility 100 to perform temperature difference power generation. The power generation facility 100 is, for example, an LNG power generation facility installed on the ground.

發電系統1具備取得海水作為熱介質之取得部2。取得部2具備:第1取得部3,其取得表層海水;及第2取得部4,其取得深層海水。第1取得部3取得表層之海水作為第1熱介質。第1取得部3具備使表層海水流通之泵。於第1取得部3之下游側,連接有進行溫度差發電之溫度差發電裝置200之稍後敘述之蒸發器201。表層海水係例如至少18[℃]~30[℃]左右之溫度之海水。表層海水於溫度差發電裝置200之蒸發器201中作為具有溫熱之溫熱熱介質使用。第1取得部3取得之溫熱熱介質期望以生物不附著於蒸發器201等之方式滿足稍後敘述之特定條件。The power generation system 1 includes an acquisition unit 2 that acquires seawater as a heat medium. The acquisition unit 2 includes: a first acquisition unit 3 that acquires surface seawater; and a second acquisition unit 4 that acquires deep seawater. The first obtaining unit 3 obtains surface seawater as the first heat medium. The first acquisition unit 3 includes a pump that circulates surface seawater. On the downstream side of the first acquisition unit 3, an evaporator 201, which will be described later, of the temperature difference power generation device 200 that performs temperature difference power generation is connected. The surface seawater is, for example, seawater with a temperature of at least about 18[°C]-30[°C]. The surface seawater is used as a warm heat medium with warm heat in the evaporator 201 of the temperature difference power generation device 200. The warm heat medium acquired by the first acquiring unit 3 is expected to satisfy a specific condition described later so that the organism does not adhere to the evaporator 201 or the like.

第2取得部4於距海水面深100 [m]以上(例如100 [m]~600 [m]左右)取得15[℃]左右之深層海水作為第2熱介質。第2取得部4具備使深層海水流通之泵。深層海水例如至少具有TOC(Total Organic Carbon:總有機碳)1.3 [mg/l]以下之特定條件。特定條件設定為生物不附著於稍後敘述之汽化裝置104中之條件。若以生物不附著之方式滿足上述特定條件者作為熱介質,則第2取得部4亦可不必取得上述深度之海水。因此,第2取得部4亦可取得淡水作為熱介質。即,第2取得部4取得至少具有TOC 1.3 [mg/l]以下之特定條件之水作為熱介質。The second acquisition unit 4 acquires deep seawater at a depth of 100 [m] or more (for example, about 100 [m] to 600 [m]) from the sea surface as the second heat medium. The second acquisition unit 4 includes a pump that circulates deep seawater. For example, the deep seawater has at least a specific condition of TOC (Total Organic Carbon) 1.3 [mg/l] or less. The specific condition is set as the condition that the organism does not attach to the vaporization device 104 described later. If the heat medium meets the above-mentioned specific conditions in such a way that organisms do not adhere, the second obtaining unit 4 may not need to obtain seawater of the above-mentioned depth. Therefore, the second acquisition unit 4 can also acquire fresh water as a heat medium. That is, the second obtaining unit 4 obtains water having at least a specific condition of TOC 1.3 [mg/l] or less as the heat medium.

水之特定條件若為生物不附著於裝置內之條件,則除TOC以外,亦可使用DOC(Dissolved Organic Carbon:溶解性有機碳)、POC(Particulate Organic Carbon:顆粒性有機碳)、細菌數、及溶氧量等其他指標值。If the specific conditions of water are the conditions under which organisms do not adhere to the device, in addition to TOC, DOC (Dissolved Organic Carbon), POC (Particulate Organic Carbon), bacterial count, etc. can also be used. And other index values such as dissolved oxygen.

藉由上述特定條件,深層海水成為具有與表層海水相比溫度較低之冷熱之低溫熱介質,表層海水成為具有與低溫熱介質相比溫度較高之溫熱之溫熱熱介質。Under the above-mentioned specific conditions, the deep seawater becomes a low-temperature heat medium with lower temperature than the surface seawater, and the surface seawater becomes a warm heat medium with higher temperature than the low-temperature heat medium.

於第2取得部4之下游側連接有發電設備100。於發電設備100之下游側連接有溫度差發電裝置200。A power generation facility 100 is connected to the downstream side of the second acquisition unit 4. A temperature difference power generation device 200 is connected to the downstream side of the power generation equipment 100.

發電設備100具備貯藏LNG之第1貯藏部101。第1貯藏部101係貯藏-162[℃]之液化LNG之貯槽。於第1貯藏部101內,產生LNG受到來自外部之熱而汽化之揮發氣體。因此,於第1貯藏部101,設置有收集揮發氣體並再液化之壓縮機102。與第1貯藏部101相鄰設置有用於貯藏揮發氣體之第2貯藏部103。The power generation facility 100 includes a first storage unit 101 that stores LNG. The first storage part 101 is a storage tank for storing -162[°C] liquefied LNG. In the first storage part 101, volatile gas in which LNG is vaporized by heat from the outside is generated. Therefore, the first storage part 101 is provided with a compressor 102 that collects volatile gas and reliquefies it. Adjacent to the first storage part 101, a second storage part 103 for storing volatile gas is provided.

於第1貯藏部101內產生之揮發氣體經由配管流入第2貯藏部103。貯藏於第2貯藏部103內之揮發氣體藉由壓縮機102予以再液化而產生LNG(再生液化氣體)。例如使用夜間產生之剩餘電力藉由壓縮機102而產生再生液化氣體。使用剩餘電力產生之再生液化氣體成為根據需要而供給之發電設備100之燃料。由壓縮機102與第2貯藏部103構成產生再生液化氣體之再生部。即,再生部係以LNG之形式將剩餘電力加以蓄電之化學蓄電裝置。揮發氣體亦可作為驅動壓縮機102之電源裝置之燃料使用。剩餘電力可自其他發電設備供給,亦可供給由溫度差發電裝置200產生者。The volatile gas generated in the first storage part 101 flows into the second storage part 103 via the pipe. The volatile gas stored in the second storage portion 103 is reliquefied by the compressor 102 to generate LNG (regenerated liquefied gas). For example, the compressor 102 uses the surplus power generated at night to generate the regenerated liquefied gas. The regenerated liquefied gas generated by using the surplus power becomes the fuel for the power generation equipment 100 supplied as needed. The compressor 102 and the second storage section 103 constitute a regeneration section that generates regenerated liquefied gas. That is, the regeneration unit is a chemical power storage device that stores surplus power in the form of LNG. The volatile gas can also be used as fuel for the power supply device driving the compressor 102. The surplus power can be supplied from other power generation equipment, and can also be supplied to those generated by the temperature difference power generation device 200.

於第1貯藏部101之下游側,經由配管B連接有使LNG再汽化之汽化裝置104。於汽化裝置104連接第2取得部4之下游側。汽化裝置104具備熱交換器。於汽化裝置104,經由配管B自第1貯藏部101流入液體狀態之LNG。於汽化裝置104,經由配管F自第2取得部4流入深層海水。流入汽化裝置104之LNG以熱交換器藉由深層海水加熱,產生經汽化之氣體(NG)。通常,若於熱交換器之熱交換時使用海水,則會附著貝殼等海洋生物,使得熱交換之效率降低。因此,於使用海水之情形時,需定期洗淨汽化裝置。On the downstream side of the first storage section 101, a vaporization device 104 for revaporizing LNG is connected via a pipe B. The vaporization device 104 is connected to the downstream side of the second acquisition unit 4. The vaporization device 104 includes a heat exchanger. In the vaporization device 104, LNG in a liquid state flows from the first storage unit 101 through the pipe B. In the vaporization device 104, deep seawater flows in from the second acquisition unit 4 through the pipe F. The LNG flowing into the vaporization device 104 is heated by the deep seawater by a heat exchanger to generate vaporized gas (NG). Generally, if seawater is used for heat exchange in a heat exchanger, marine organisms such as shells will adhere, which will reduce the efficiency of heat exchange. Therefore, when using sea water, the vaporization device needs to be cleaned regularly.

對此,於發電系統1中,因自第2取得部4取得並流通至少滿足上述特定條件之深層海水,故防止海洋生物附著於汽化裝置104內部。因此,於發電系統1中,可省略汽化裝置104之分解及洗淨之維護之步驟並減低使用成本。In contrast, in the power generation system 1, since deep seawater satisfying at least the above-mentioned specific conditions is acquired from the second acquisition unit 4 and circulated, marine organisms are prevented from adhering to the inside of the vaporization device 104. Therefore, in the power generation system 1, the steps of disassembling and cleaning the vaporization device 104 can be omitted, and the use cost can be reduced.

流通於汽化裝置104之熱交換器並產生之氣體經由氣體配管G排出。於汽化裝置104之氣體配管G之下游側,連接有發電機105。於發電機105,將流入之氣體作為燃料進行發電。發電機105使用例如燃氣渦輪式之發電機。燃氣渦輪式之發電原理為一般者,省略詳細之說明。汽化裝置104產生之氣體可供給至其他發電設備,亦可使用作為使溫度差發電裝置200之作動介質循環之泵之電源之燃料。該泵亦可由發電機105產生之電力驅動。The gas generated by circulating through the heat exchanger of the vaporization device 104 is discharged through the gas pipe G. A generator 105 is connected to the downstream side of the gas pipe G of the vaporization device 104. In the generator 105, the inflowing gas is used as fuel to generate electricity. The generator 105 uses, for example, a gas turbine type generator. The principle of gas turbine type power generation is general, and detailed description is omitted. The gas generated by the vaporization device 104 can be supplied to other power generation equipment, and can also be used as a fuel for the power supply of a pump that circulates the operating medium of the temperature difference power generation device 200. The pump can also be driven by electricity generated by the generator 105.

流通於汽化裝置104之熱交換器之深層海水藉由與LNG之熱交換而冷卻,並作為具有冷熱之低溫熱介質而自熱介質用之配管排出。於汽化裝置104之熱介質用之配管之下游側,連接有溫度差發電裝置200之凝結器202。The deep seawater circulating in the heat exchanger of the vaporization device 104 is cooled by heat exchange with LNG, and is discharged from the pipe for the heating medium as a low-temperature heat medium having cold and heat. The condenser 202 of the temperature difference power generation device 200 is connected to the downstream side of the pipe for the heat medium of the vaporization device 104.

除上述構成以外,亦可以於自第2取得部4取得之深層海水流通於凝結器202之後,流通至汽化裝置104之方式構成。又可設置連接第2取得部4與凝結器202之配管D,將自汽化裝置104流入凝結器202之經冷卻之深層海水與自第2取得部4取得之深層海水混合並調整溫度。還可使自汽化裝置104排出之經冷卻之深層海水再次返回汽化裝置104形成使深層海水循環之流路。In addition to the above-mentioned configuration, the deep seawater obtained from the second obtaining unit 4 may flow through the condenser 202 and then flow through the vaporization device 104. In addition, a pipe D connecting the second acquisition unit 4 and the condenser 202 can be provided to mix the cooled deep seawater flowing from the vaporization device 104 into the condenser 202 and the deep seawater acquired from the second acquisition unit 4 to adjust the temperature. The cooled deep seawater discharged from the vaporization device 104 can also be returned to the vaporization device 104 to form a flow path for circulating the deep seawater.

溫度差發電裝置200使作動介質產生汽化與凝結之循環並運作。溫度差發電裝置200係具備渦輪式之發電機203之熱機構。溫度差發電裝置200將表層海水(第1熱介質)作為熱源汽化作動介質。溫度差發電裝置200將汽化LNG而成為低溫之深層海水(第2熱介質)作為熱源凝結作動介質。The temperature difference power generation device 200 causes the actuating medium to generate a cycle of vaporization and condensation and operate. The temperature difference power generation device 200 is a thermal mechanism equipped with a turbine generator 203. The temperature difference power generation device 200 uses surface seawater (the first heat medium) as a heat source to vaporize the actuating medium. The temperature difference power generation device 200 uses the deep seawater (the second heat medium) that vaporizes LNG and becomes a low temperature as a heat source condensation actuation medium.

溫度差發電裝置200將例如以低溫沸騰之氨作為作動介質運作。作動介質亦可使用氨與水之混合物。混合物以例如水10[%]相對於氨90[%]左右之比例產生。氨或混合物於常溫下蒸汽化。作動介質若例如加壓至11氣壓左右則液化。經加壓之作動介質於自第1取得部3取得之表層海水之溫度30[℃]左右沸騰並汽化。The temperature difference power generation device 200 operates, for example, with low-temperature boiling ammonia as an operating medium. A mixture of ammonia and water can also be used as the actuating medium. The mixture is produced in a ratio of, for example, water 10[%] to ammonia 90[%]. Ammonia or mixtures are vaporized at room temperature. The actuating medium is liquefied when it is pressurized to about 11 atmospheric pressure. The pressurized operating medium boils and vaporizes at the temperature of the surface seawater obtained from the first obtaining part 3 at about 30[°C].

溫度差發電裝置200具備作動介質之流路210。作動介質於流路210內以加壓並液化之狀態循環。於流路210之中途,設置有使作動介質循環之泵205。自泵205吐出之作動介質流入蒸發器201。蒸發器201具備熱交換器。於熱交換器,連接有連接於第1取得部3之配管H,且自第1取得部3流入表層海水。於熱交換器,連接有流路210。熱交換器構成為表層海水與流路210之外部接觸,且流通於流路210內之作動介質與表層海水進行熱交換。作動介質於熱交換器中由表層海水升溫並汽化。The temperature difference power generation device 200 includes a flow path 210 of an actuating medium. The actuating medium circulates in the flow path 210 in a pressurized and liquefied state. In the middle of the flow path 210, a pump 205 that circulates the operating medium is provided. The operating medium discharged from the pump 205 flows into the evaporator 201. The evaporator 201 includes a heat exchanger. The piping H connected to the first acquisition unit 3 is connected to the heat exchanger, and the surface seawater flows in from the first acquisition unit 3. A flow path 210 is connected to the heat exchanger. The heat exchanger is configured such that the surface seawater is in contact with the outside of the flow path 210, and the actuating medium circulating in the flow path 210 exchanges heat with the surface seawater. The actuating medium is heated and vaporized by the surface seawater in the heat exchanger.

經汽化之作動介質流入連接於蒸發器201之下游側之發電機203。經汽化之作動介質使發電機203具有之渦輪旋轉。於渦輪設置有輸出旋轉力之輸出軸。於輸出軸連結有以電磁感應發電之發電裝置,且發電裝置與渦輪之旋轉連動並輸出電力。使渦輪旋轉之後,經汽化之作動介質流入連接於發電機203之下游側之凝結器202。The vaporized operating medium flows into the generator 203 connected to the downstream side of the evaporator 201. The vaporized operating medium causes the turbine of the generator 203 to rotate. The turbine is provided with an output shaft for outputting rotational force. A power generating device that generates electricity by electromagnetic induction is connected to the output shaft, and the power generating device is linked with the rotation of the turbine to output power. After the turbine is rotated, the vaporized operating medium flows into the condenser 202 connected to the downstream side of the generator 203.

凝結器202具備熱交換器。於熱交換器,連接有連接於汽化裝置104之下游側之配管C,並流入自第2取得部4取得,且藉由LNG冷卻之深層海水。於熱交換器,連接有流路210。熱交換器構成為深層海水與流路210之外部接觸,且流通於流路210內之經汽化之作動介質與深層海水進行熱交換。經汽化之作動介質於熱交換器中以深層海水降溫凝結並變回液體。於凝結器202之下游側,連接有泵205。變回液體之作動介質藉由泵205於流路再循環。The condenser 202 includes a heat exchanger. The heat exchanger is connected to the piping C connected to the downstream side of the vaporization device 104, and flows into the deep seawater obtained from the second obtaining part 4 and cooled by LNG. A flow path 210 is connected to the heat exchanger. The heat exchanger is configured such that the deep seawater is in contact with the outside of the flow path 210, and the vaporized actuating medium circulating in the flow path 210 exchanges heat with the deep seawater. The vaporized actuating medium is cooled and condensed with deep seawater in the heat exchanger and turns back to liquid. On the downstream side of the condenser 202, a pump 205 is connected. The actuating medium changed back to the liquid is recirculated in the flow path by the pump 205.

如上所述,於溫度差發電裝置200中,於凝結器202利用由LNG冷卻之深層海水者,較利用通常之溫度差發電所需之低溫之600 [m]~1000 [m]之深層海水之情形,可減少海水之汲取成本或配管設備之設置成本。As described above, in the temperature difference power generation device 200, the use of deep sea water cooled by LNG in the condenser 202 is lower than the 600 [m] to 1000 [m] deep sea water required for power generation using the normal temperature difference. Circumstances can reduce the cost of drawing sea water or the installation cost of piping equipment.

由凝結器202進行熱交換之深層海水以6[℃]左右之溫度自凝結器202排出。自凝結器202排出之深層海水仍與表層海水存在溫度差,若直接放出至海洋,則有對環境造成影響之顧慮。因此,於溫度差發電裝置200,設置有利用流通於凝結器202並排出之深層海水的附帶設備Q。The deep seawater that is heat exchanged by the condenser 202 is discharged from the condenser 202 at a temperature of about 6[°C]. There is still a temperature difference between the deep seawater discharged from the condenser 202 and the surface seawater. If it is directly released into the ocean, there is a concern that it will affect the environment. Therefore, the temperature difference power generation device 200 is provided with auxiliary equipment Q that utilizes the deep seawater that flows through the condenser 202 and is discharged.

附帶設備Q係例如直接利用流通於凝結器202並自排出口208排出之深層海水之冷溫之空調設備Q1。空調設備Q1係利用自凝結器202排出之深層海水作為冷媒之冷房設備。空調設備Q1具備例如供自凝結器202排出之深層海水流通之熱交換器(無圖示)。空調設備Q1使常溫之空氣流通於熱交換器,產生經冷卻之空氣。根據空調設備Q1,因利用自凝結器202排出之深層海水之冷熱,故減少使用成本。根據空調設備Q1,無需使冷媒循環之裝置或壓縮機,從而減少設置成本。The auxiliary equipment Q is, for example, an air-conditioning equipment Q1 that directly utilizes cold and warm deep seawater flowing through the condenser 202 and discharged from the discharge port 208. The air conditioning equipment Q1 is a cold room equipment that uses the deep seawater discharged from the condenser 202 as a refrigerant. The air conditioner Q1 includes, for example, a heat exchanger (not shown) through which the deep seawater discharged from the condenser 202 flows. The air conditioner Q1 circulates air at room temperature through the heat exchanger to generate cooled air. According to the air conditioner Q1, since the cold and heat of the deep seawater discharged from the condenser 202 is used, the use cost is reduced. According to the air conditioner Q1, there is no need to circulate the refrigerant or a compressor, thereby reducing installation costs.

附帶設備Q亦可為利用深層海水之養殖設備Q2。深層海水與表層海水相比,富含植物浮游生物之成長所需之無機營養鹽(硝酸鹽氮:NO3、磷酸鹽磷:PO4、矽:Si)。因此,若將深層海水放出至表層海水之區域,則因豐富之無機營養鹽而產生浮游生物,該區域成為適合漁場或養殖場之場所。The accessory equipment Q can also be a breeding equipment Q2 using deep seawater. Compared with surface seawater, deep seawater is rich in inorganic nutrients (nitrate nitrogen: NO3, phosphate phosphorus: PO4, silicon: Si) required for the growth of plant plankton. Therefore, if the deep seawater is released to the area of the surface seawater, plankton will be produced due to the abundant inorganic nutrients, and this area becomes a suitable place for fishery or breeding farms.

即,可使用深層海水養殖牡蠣、鮑魚、蝦等海產物。又,深層海水幾乎不包含污染物質,且為低溫,因而雜菌為表層海水之1/1000以下。因此,若使用深層海水,則可設置養殖不引起食物中毒之安全之牡蠣等海產物之養殖設備Q2。養殖設備Q2可設置於海上,亦可為設置於陸地上之魚塘。養殖設備Q2亦可為養殖用於產生生物燃料之藻類者。That is, marine products such as oysters, abalones, and shrimps can be cultivated in deep seawater. In addition, the deep seawater contains almost no pollutants and is low in temperature, so the amount of bacteria is less than 1/1000 of the surface seawater. Therefore, if deep seawater is used, it is possible to set up a breeding facility Q2 for cultivating safe oysters and other marine products that do not cause food poisoning. The breeding equipment Q2 can be installed on the sea, or it can be a fish pond installed on land. The cultivation equipment Q2 can also be a cultivation of algae used to produce biofuels.

附帶設備Q可為製造包含使用深層海水產生之化妝品、食品、飲料、及稀有金屬之資源等副產品之工場Q3。附帶設備Q亦可為使用深層海水之農場Q4。於將深層海水利用於農業之情形時,可使用蒸餾或逆浸透膜等將之淡水化作為用於栽培農作物之農業用水使用,亦可利用深層海水之低溫之溫度作為用於房屋栽培之空調或農作物之土壤之溫度調整之冷媒或貯藏農作物之冷藏設施之冷媒使用。The ancillary equipment Q can be a workshop Q3 that manufactures by-products including cosmetics, food, beverages, and rare metal resources produced using deep seawater. The accessory equipment Q can also be a farm Q4 that uses deep seawater. When the deep seawater is used in agriculture, it can be desalinated by distillation or reverse osmosis membrane as agricultural water for cultivating crops, and the low temperature of deep seawater can also be used as air conditioning or for house cultivation. The cooling medium used for the temperature adjustment of the soil of the crops or the cooling medium of the cold storage facility for storing the crops.

此外,附帶設備Q亦可為將深層海水淡水化,且調整成分而產生之飲料水之水道設備或農業設備或養殖設備。上述附帶設備Q雖例示利用低溫熱介質之溫度者,但不限定於此,亦可為利用溫熱熱介質之溫度者。即,附帶設備Q可為直接利用自第1取得部3取得並利用於溫度差發電之後之表層海水之溫度之空調設備或農作物的貯藏設備。進而,附帶設備Q亦可為直接利用自發電設備100之發電機105排出之餘熱之餘熱利用設備。In addition, the accessory equipment Q can also be waterway equipment, agricultural equipment, or breeding equipment for drinking water produced by desalinating deep seawater and adjusting the composition. Although the above-mentioned accessory equipment Q exemplifies the use of the temperature of the low-temperature heating medium, it is not limited to this, and may be one that uses the temperature of the warm heating medium. That is, the auxiliary equipment Q can be an air conditioning equipment or a storage equipment for crops that directly utilizes the temperature of the surface seawater after the temperature difference power generation is obtained from the first acquisition unit 3. Furthermore, the auxiliary equipment Q may also be a waste heat utilization equipment that directly utilizes waste heat discharged from the generator 105 of the power generation equipment 100.

其次,對發電系統1之熱循環進行說明。Next, the thermal cycle of the power generation system 1 will be described.

如圖2所示,LNG自第1貯藏部101(參照圖1)流通於配管B時,溫度為約-160[℃]左右。LNG由汽化裝置104進行熱交換之後汽化並成為NG,且於以7.3 [kg/s]之流量流通於氣體配管G時,溫度上升至約-122~-105[℃]左右。As shown in Fig. 2, when LNG flows through the pipe B from the first storage unit 101 (refer to Fig. 1), the temperature is about -160 [°C]. The LNG undergoes heat exchange by the vaporization device 104 and then vaporizes to become NG, and when it flows through the gas piping G at a flow rate of 7.3 [kg/s], the temperature rises to about -122 to -105 [°C].

深層海水以2.31 [kg/s]之流量自第2取得部4取得,並以0.23 [t/s]之流量於流通於汽化裝置104及凝結器202之循環路循環,且以2.31 [kg/s]之流量自排出口208排出。深層海水以6.2[℃]之溫度輸入至汽化裝置104,且以冷卻至1[℃]之溫度,自汽化裝置104排出。深層海水以1[℃]之溫度輸入至凝結器202,且以加溫至6.1[℃]之溫度,自凝結器202排出,並以6.1[℃]之溫度自排出口208排出。自凝結器202排出之深層海水之一部分以再輸入汽化裝置104之方式循環。The deep seawater is obtained from the second acquisition unit 4 at a flow rate of 2.31 [kg/s], and circulates in the circulation path circulating through the vaporization device 104 and the condenser 202 at a flow rate of 0.23 [t/s], and the flow rate is 2.31 [kg/s] The flow of s] is discharged from the discharge port 208. The deep seawater is input to the vaporization device 104 at a temperature of 6.2[°C], and is cooled to a temperature of 1[°C], and discharged from the vaporization device 104. The deep seawater is input to the condenser 202 at a temperature of 1[°C], is heated to a temperature of 6.1[°C], is discharged from the condenser 202, and is discharged from the discharge outlet 208 at a temperature of 6.1[°C]. A part of the deep seawater discharged from the condenser 202 is circulated in a manner of re-entering the vaporization device 104.

表層海水以0.23 [t/s]之流量自第1取得部3取得,且以30[℃]之溫度輸入至蒸發器201,並於溫度冷卻至27[℃]時自蒸發器201排出。The surface seawater is obtained from the first obtaining part 3 at a flow rate of 0.23 [t/s], is input to the evaporator 201 at a temperature of 30 [°C], and is discharged from the evaporator 201 when the temperature is cooled to 27 [°C].

於溫度差發電裝置200中,作動介質循環於流路210,以溫度為4[℃]之液體之狀態輸入至蒸發器201,以溫度加溫至26[℃]並汽化之狀態自蒸發器201排出。作動介質以26[℃]之溫度輸入至發電機203,於以5[℃]之溫度自發電機203排出。作動介質以5[℃]之溫度輸入凝結器202,以溫度冷卻至4[℃]並液化之狀態自凝結器202排出。作動介質以溫度為4[℃]之液體之狀態藉由泵205再次壓送至流路210內並循環於流路210內。In the temperature difference power generation device 200, the actuating medium circulates in the flow path 210, and is input to the evaporator 201 in the state of a liquid with a temperature of 4[℃], and from the evaporator 201 in a state of being heated to 26[℃] and vaporized discharge. The actuating medium is input to the generator 203 at a temperature of 26[°C], and discharged from the generator 203 at a temperature of 5[°C]. The operating medium is fed into the condenser 202 at a temperature of 5[°C], and discharged from the condenser 202 in a state where the temperature is cooled to 4[°C] and liquefied. The actuating medium is pumped again into the flow path 210 by the pump 205 in the state of a liquid with a temperature of 4[° C.] and circulates in the flow path 210.

藉由上述熱循環,發電系統1可以200 [MW]之GT氣體供給量運作。但,上述熱循環為一例,各數值藉由發電系統1之發電量變動。With the above-mentioned thermal cycle, the power generation system 1 can operate with a GT gas supply of 200 [MW]. However, the above-mentioned thermal cycle is an example, and each value is changed by the power generation amount of the power generation system 1.

如上所述,根據發電系統1,藉由於溫度差發電之冷熱源利用發電設備100之燃料之LNG具有之冷熱,無需汲取通常之溫度差發電所需之低溫之600 [m]~1000 [m]之深層海水作為冷熱源,可減少海水之汲取成本或配管設備之設置成本。根據發電系統1,藉由取得距海水面100 [m]~600 [m]左右之海水作為冷熱源,可減少汽化裝置104內之生物污染,並可減少維護成本。根據發電系統1,藉由附帶於LNG之發電設備100之溫度差發電裝置200,可使熱效率大幅提高。As described above, according to the power generation system 1, the cold and heat source for power generation due to the temperature difference utilizes the heat and cold of the LNG fuel of the power generation equipment 100, without the need to extract the low temperature of 600 [m] to 1000 [m] required for the normal temperature difference power generation. The deep seawater is used as a source of cold and heat, which can reduce the cost of seawater extraction or the installation cost of piping equipment. According to the power generation system 1, by obtaining sea water about 100 [m] to 600 [m] from the sea surface as a cold and heat source, the biological pollution in the vaporization device 104 can be reduced, and the maintenance cost can be reduced. According to the power generation system 1, the thermal efficiency can be greatly improved by the temperature difference power generation device 200 attached to the LNG power generation equipment 100.

[第2實施形態] 於以下之說明,針對與第1實施形態相同之構成使用相同之名稱及符號,且適當省略重複之說明。[Second Embodiment] In the following description, the same names and symbols are used for the same components as in the first embodiment, and repeated descriptions are appropriately omitted.

如圖3所示,第2實施形態之發電系統1A構成為具備2個溫度差發電裝置200A1、200A2。As shown in Fig. 3, the power generation system 1A of the second embodiment is configured to include two temperature difference power generation devices 200A1 and 200A2.

溫度差發電裝置200A1使用自第1取得部3取得之表層海水進行利用LNG之冷溫之溫度差發電。於發電設備100A中,自第1取得部3取得之表層海水流入汽化裝置104。其中,期望表層海水以不繁殖生物之方式滿足特定條件。由汽化裝置104冷卻之表層海水流入溫度差發電裝置200A1之凝結器202。自第1取得部3取得之表層海水之一部分經分支而流入溫度差發電裝置200A1之蒸發器201。流通於蒸發器201之表層海水與流通於凝結器202之表層海水混合且調整為與排水地之海水之溫度差不超過4[℃]並排出至大海。The temperature difference power generation device 200A1 uses the surface seawater obtained from the first obtaining unit 3 to generate power using the temperature difference of the cold temperature of LNG. In the power generation facility 100A, the surface seawater obtained from the first obtaining unit 3 flows into the vaporization device 104. Among them, it is expected that the surface seawater meets certain conditions in a way that does not breed organisms. The surface seawater cooled by the vaporization device 104 flows into the condenser 202 of the temperature difference power generation device 200A1. A part of the surface seawater obtained from the first obtaining unit 3 is branched and flows into the evaporator 201 of the temperature difference power generation device 200A1. The surface seawater circulating in the evaporator 201 is mixed with the surface seawater circulating in the condenser 202 and adjusted to have a temperature difference of no more than 4[°C] with the seawater in the drainage place and discharged to the sea.

溫度差發電裝置200A2使用自第2取得部4取得之深層海水進行溫度差發電。溫度差發電裝置200A2中,自第2取得部4取得之深層海水流入凝結器202。自第1取得部3取得之表層海水流入蒸發器201。自凝結器202排出之表層海水利用於附帶設備Q。The temperature difference power generation device 200A2 uses the deep seawater acquired from the second acquisition unit 4 to perform temperature difference power generation. In the temperature difference power generation device 200A2, the deep seawater acquired from the second acquisition unit 4 flows into the condenser 202. The surface seawater obtained from the first obtaining unit 3 flows into the evaporator 201. The surface seawater discharged from the coagulator 202 is used in the auxiliary equipment Q.

根據第2實施形態之發電系統1A,可使用自第1取得部3取得之表層海水進行利用LNG之冷溫之溫度差發電,並可增加溫度差發電之發電量。According to the power generation system 1A of the second embodiment, the surface seawater obtained from the first obtaining unit 3 can be used to generate power using the cold temperature difference of LNG, and the power generation amount of the temperature difference power generation can be increased.

[第3實施形態] 於以下之說明,對與第1實施形態相同之構成使用相同之名稱及符號,且適當省略重複之說明。以下,根據熱循環說明第3實施形態之發電系統1B之構成。[Third Embodiment] In the following description, the same names and symbols are used for the same components as in the first embodiment, and repeated descriptions are appropriately omitted. Hereinafter, the configuration of the power generation system 1B of the third embodiment will be described based on the thermal cycle.

如圖4所示,第3實施形態之發電系統1B之發電設備100(參照圖1)中之深層海水之循環路徑與第1實施形態之發電系統1不同,構成為自第2取得部4取得之深層海水首先輸入溫度差發電裝置200之凝結器202,之後輸入汽化裝置104。As shown in FIG. 4, the circulation path of the deep seawater in the power generation facility 100 (refer to FIG. 1) of the power generation system 1B of the third embodiment is different from the power generation system 1 of the first embodiment, and is configured to be obtained from the second acquisition unit 4 The deep seawater is first input to the condenser 202 of the temperature difference power generation device 200, and then input to the vaporization device 104.

深層海水以2.64 [t/s]之流量自第2取得部4取得。深層海水輸入凝結器202,並以2.64 [t/s]之流量自排出口208排出。自凝結器202排出之深層海水之一部分以0.4 [t/s]之流量輸入汽化裝置104,並與輸入至凝結器202之路徑合流。因此,深層海水以3.04 [t/s]之流量輸入凝結器202。The deep seawater is obtained from the second obtaining part 4 at a flow rate of 2.64 [t/s]. The deep seawater is fed into the condenser 202 and discharged from the discharge port 208 at a flow rate of 2.64 [t/s]. A part of the deep seawater discharged from the condenser 202 is fed to the vaporization device 104 at a flow rate of 0.4 [t/s], and merges with the path fed to the condenser 202. Therefore, the deep seawater enters the condenser 202 at a flow rate of 3.04 [t/s].

深層海水以7[℃]之溫度輸入凝結器202,且於溫度加溫至10[℃]時自凝結器202排出。之後,深層海水以10[℃]之溫度自排出口208排出。自凝結器202排出之深層海水之一部分以10[℃]之溫度輸入汽化裝置104,於溫度冷卻至7[℃]時自汽化裝置104排出,並與輸入凝結器202之路徑合流。自凝結器202排出之深層海水之一部分循環於凝結器202與汽化裝置104。The deep seawater is fed into the condenser 202 at a temperature of 7[°C], and is discharged from the condenser 202 when the temperature is heated to 10[°C]. After that, the deep seawater is discharged from the discharge port 208 at a temperature of 10[°C]. A part of the deep seawater discharged from the condenser 202 is fed to the vaporization device 104 at a temperature of 10[°C], and is discharged from the vaporization device 104 when the temperature is cooled to 7[°C], and merges with the path of the input condenser 202. Part of the deep seawater discharged from the condenser 202 circulates in the condenser 202 and the vaporization device 104.

流通於配管B之LNG由汽化裝置104進行熱交換之後汽化並成為NG,且以7.3 [kg/s]之流量流通於氣體配管G時,溫度上升至約-122~-105[℃]左右。The LNG flowing in the pipe B is heat-exchanged by the vaporization device 104 and then vaporized to become NG, and when it flows through the gas pipe G at a flow rate of 7.3 [kg/s], the temperature rises to about -122 to -105 [°C].

表層海水以3.04 [t/s]之流量自第1取得部3取得,以30[℃]之溫度輸入蒸發器201,於溫度冷卻至27[℃]時自蒸發器201排出。The surface seawater is obtained from the first obtaining unit 3 at a flow rate of 3.04 [t/s], is input to the evaporator 201 at a temperature of 30 [°C], and is discharged from the evaporator 201 when the temperature is cooled to 27 [°C].

於溫度差發電裝置200中,作動介質循環於溫度差發電裝置200之流路210,以溫度為4[℃]之液體之狀態輸入蒸發器201,於溫度加溫至26[℃]並汽化之狀態下自蒸發器201排出。作動介質以26[℃]之溫度輸入發電機203,以5[℃]之溫度自發電機203排出。作動介質以5[℃]之溫度輸入凝結器202,於溫度冷卻至4[℃]並液化之狀態下自凝結器202排出。作動介質以溫度為4[℃]之液體之狀態藉由泵205再次壓送至流路210內並循環於流路210內。In the temperature difference power generation device 200, the actuating medium circulates in the flow path 210 of the temperature difference power generation device 200, and enters the evaporator 201 as a liquid with a temperature of 4[°C], and then it is heated to 26[°C] and vaporized. It is discharged from the evaporator 201 in the state. The operating medium is fed into the generator 203 at a temperature of 26[°C], and discharged from the generator 203 at a temperature of 5[°C]. The actuating medium is fed into the condenser 202 at a temperature of 5[°C], and discharged from the condenser 202 in a state where the temperature is cooled to 4[°C] and liquefied. The actuating medium is pumped again into the flow path 210 by the pump 205 in the state of a liquid with a temperature of 4[° C.] and circulates in the flow path 210.

藉由上述熱循環,第3實施形態之發電系統1B可以200 [MW]之GT氣體供給量運作。但,上述熱循環為一例,各數值藉由發電系統1B之發電量變動。With the above-mentioned thermal cycle, the power generation system 1B of the third embodiment can be operated with a GT gas supply amount of 200 [MW]. However, the above-mentioned thermal cycle is an example, and each value is changed by the power generation amount of the power generation system 1B.

[第4實施形態] 於以下之說明中,對與第1實施形態相同之構成使用相同之名稱及符號,且適當省略重複之說明。以下,根據熱循環之流程說明第4實施形態之發電系統1C之構成。[Fourth Embodiment] In the following description, the same names and symbols are used for the same components as in the first embodiment, and repeated descriptions are appropriately omitted. Hereinafter, the configuration of the power generation system 1C of the fourth embodiment will be described based on the flow of the thermal cycle.

如圖5所示,第4實施形態之發電系統1C係對第3實施形態之發電系統1B追加淡水化設備而構成。發電系統1C構成為自第1取得部3輸入發電設備100(參照圖1)之發電機105之冷卻水。As shown in Fig. 5, the power generation system 1C of the fourth embodiment is configured by adding desalination equipment to the power generation system 1B of the third embodiment. The power generation system 1C is configured to input the cooling water of the generator 105 of the power generation facility 100 (refer to FIG. 1) from the first acquisition unit 3.

深層海水以1.54 [t/s]之流量自第2取得部4取得,並輸入凝結器202,且以1.54 [t/s]之流量自排出口208排出。自凝結器202排出之一部分之深層海水以0.4 [t/s]之流量輸入汽化裝置104,且與輸入凝結器202之路徑合流。因此,深層海水以1.94 [t/s]之流量輸入凝結器202。The deep seawater is obtained from the second obtaining part 4 at a flow rate of 1.54 [t/s], is input into the condenser 202, and is discharged from the discharge port 208 at a flow rate of 1.54 [t/s]. A part of the deep seawater discharged from the condenser 202 is fed into the vaporization device 104 at a flow rate of 0.4 [t/s], and merges with the path fed into the condenser 202. Therefore, the deep seawater enters the condenser 202 at a flow rate of 1.94 [t/s].

深層海水以10[℃]之溫度輸入凝結器202,溫度被加溫至13[℃]而排出。自凝結器202排出之一部分之深層海水以13[℃]之溫度輸入汽化裝置104。深層海水之溫度由汽化裝置104予以冷卻至10[℃]並排出,且與輸入凝結器202之路徑合流。The deep seawater is fed into the condenser 202 at a temperature of 10[°C], and the temperature is heated to 13[°C] and discharged. A part of the deep seawater discharged from the condenser 202 is fed into the vaporization device 104 at a temperature of 13[°C]. The temperature of the deep seawater is cooled to 10[°C] by the vaporization device 104 and discharged, and merges with the path of the input condenser 202.

自凝結器202排出之深層海水流通於進行深層海水與表層海水之熱交換的熱交換器8,溫度被加溫至16.8[℃]而自排出口208排出。The deep seawater discharged from the condenser 202 circulates through the heat exchanger 8 that performs heat exchange between the deep seawater and the surface seawater, and the temperature is heated to 16.8 [°C] and discharged from the discharge port 208.

流通於配管B之LNG由汽化裝置104予以熱交換之後,汽化成為NG而以7.3 [kg/s]之流量流通於氣體配管G時,溫度上升至約-122~-105[℃]左右。After the LNG flowing in the pipe B is heat-exchanged by the vaporization device 104, it is vaporized into NG and flows through the gas pipe G at a flow rate of 7.3 [kg/s], and the temperature rises to about -122 to -105 [°C].

以1.94 [t/s]之流量自第1取得部3取得冷卻發電機105之表層海水,以37[℃]之溫度輸入蒸發器201,且於溫度冷卻至34[℃]時自蒸發器201排出。自蒸發器201排出之表層海水通過淡水化裝置7,其一部分被淡水化,且流通於熱交換器8內,被冷卻至31[℃]之溫度且以1000 [t/day]之生產量產生。未淡水化之表層海水以1.93 [t/s]之流量且33[℃]之溫度排出。Obtain the surface seawater of the cooling generator 105 from the first obtaining part 3 at a flow rate of 1.94 [t/s], input it to the evaporator 201 at a temperature of 37[℃], and from the evaporator 201 when the temperature is cooled to 34[℃] discharge. The surface seawater discharged from the evaporator 201 passes through the desalination device 7, a part of which is desalinated and circulates in the heat exchanger 8, and is cooled to a temperature of 31[℃] and produced with a throughput of 1000 [t/day] . The undesalted surface seawater is discharged at a flow rate of 1.93 [t/s] and a temperature of 33 [℃].

作動介質於溫度差發電裝置200之流路210循環,以溫度為4[℃]之液體之狀態輸入蒸發器201,於溫度加溫至26[℃]並汽化之狀態下自蒸發器201排出。之後,汽化後之作動介質以26[℃]之溫度輸入發電機203,於溫度為5[℃]時自發電機203排出。作動介質以5[℃]之溫度輸入凝結器202,於溫度冷卻至4[℃]並液化之狀態下自凝結器202排出。作動介質以溫度為4[℃]之液體之狀態藉由泵205再次壓送至流路210內並循環於流路210內。The actuating medium circulates in the flow path 210 of the temperature difference power generation device 200, and is fed into the evaporator 201 in the state of a liquid with a temperature of 4[°C], and discharged from the evaporator 201 in a state where the temperature is heated to 26[°C] and vaporized. After that, the vaporized actuating medium is fed into the generator 203 at a temperature of 26[°C], and discharged from the generator 203 at a temperature of 5[°C]. The actuating medium is fed into the condenser 202 at a temperature of 5[°C], and discharged from the condenser 202 in a state where the temperature is cooled to 4[°C] and liquefied. The actuating medium is pumped again into the flow path 210 by the pump 205 in the state of a liquid with a temperature of 4[° C.] and circulates in the flow path 210.

藉由上述熱循環,第4實施形態之發電系統1C之溫度差發電裝置200可以200 [MW]之GT氣體供給量運作。但,上述熱循環為一例,各數值藉由發電系統1C之發電量而變動。發電系統1C可利用發電機105之餘熱,同時將海水淡水化。With the aforementioned thermal cycle, the temperature difference power generation device 200 of the power generation system 1C of the fourth embodiment can be operated with a GT gas supply amount of 200 [MW]. However, the above-mentioned thermal cycle is an example, and each value changes according to the power generation amount of the power generation system 1C. The power generation system 1C can utilize the waste heat of the generator 105 while desalinizing seawater.

[第5實施形態] 如圖6所示,第5實施形態之發電系統1D於第1實施形態之發電系統1追加間接進行熱交換之第1中間設備300而構成。第1中間設備300設置於例如第1取得部3與溫度差發電裝置200之間。於第1中間設備300內,第1作動介質於流路310內循環。第1作動介質為例如乙二醇等之冷卻水。[Fifth Embodiment] As shown in Fig. 6, the power generation system 1D of the fifth embodiment is configured by adding a first intermediate device 300 for indirect heat exchange to the power generation system 1 of the first embodiment. The first intermediate device 300 is installed, for example, between the first acquisition unit 3 and the temperature difference power generation device 200. In the first intermediate device 300, the first actuating medium circulates in the flow path 310. The first operating medium is cooling water such as ethylene glycol.

第1中間設備300具備:熱交換器301,其進行第1取得部3取得之第1熱介質與第1作動介質之熱交換;及泵302,其使經加熱之第1作動介質循環。第1中間設備300將第1取得部3取得之第1熱介質作為熱源加熱第1作動介質。經加熱之第1作動介質成為連接於下游側之溫度差發電裝置200之蒸發器201之熱源。藉由使用第1中間設備300,而減少溫度差發電裝置200之污染。The first intermediate device 300 includes a heat exchanger 301 that performs heat exchange between the first heat medium acquired by the first acquiring unit 3 and the first actuating medium, and a pump 302 that circulates the heated first actuating medium. The first intermediate device 300 uses the first heat medium acquired by the first acquiring unit 3 as a heat source to heat the first operating medium. The heated first operating medium becomes the heat source of the evaporator 201 of the temperature difference power generation device 200 connected to the downstream side. By using the first intermediate device 300, the pollution of the temperature difference power generation device 200 is reduced.

[第6實施形態] 如圖7所示,第6實施形態之發電系統1E於第5實施形態之發電系統1D進而追加間接進行熱交換之第2中間設備400而構成。第2中間設備400設置於例如汽化裝置104與溫度差發電裝置200之間。第2作動介質於第2中間設備400之配管410循環。第2作動介質為例如丙烷。第2中間設備400將LNG作為熱源且將經冷卻之第2熱介質作為冷熱源,冷卻溫度差發電裝置200之作動介質。[Sixth Embodiment] As shown in FIG. 7, the power generation system 1E of the sixth embodiment is configured by adding a second intermediate device 400 that performs heat exchange indirectly in the power generation system 1D of the fifth embodiment. The second intermediate device 400 is installed, for example, between the vaporization device 104 and the temperature difference power generation device 200. The second operating medium circulates in the pipe 410 of the second intermediate device 400. The second operating medium is, for example, propane. The second intermediate facility 400 uses LNG as a heat source and a cooled second heat medium as a cold heat source to cool the operating medium of the temperature difference power generation device 200.

第2中間設備400具備例如:熱交換器401,其冷卻第2作動介質;及泵402,其使第2作動介質於配管410內循環。第2中間設備400於泵402之上游側連接溫度差發電裝置200之凝結器202,於下游側連接有熱交換器401。第2中間設備400藉由經冷卻之第2作動介質而於凝結器202冷卻並凝結溫度差發電裝置200之作動介質。第2中間設備400於熱交換器401中將自汽化裝置104產生之冷熱作為熱源而冷卻第2作動介質。The second intermediate device 400 includes, for example, a heat exchanger 401 that cools the second operating medium, and a pump 402 that circulates the second operating medium in the pipe 410. The second intermediate device 400 is connected to the condenser 202 of the temperature difference power generation device 200 on the upstream side of the pump 402, and is connected to the heat exchanger 401 on the downstream side. The second intermediate device 400 cools and condenses the operating medium of the temperature difference power generation device 200 in the condenser 202 by the cooled second operating medium. The second intermediate device 400 uses the cold heat generated from the vaporization device 104 as a heat source in the heat exchanger 401 to cool the second operating medium.

第2中間設備400亦可為中間介質式汽化器(Intermediate Fluid type Vaporizer:IFV)。第2取得部4亦可於例如下游側設置鼓風機140並將空氣作為第2熱介質流通於汽化裝置104或第2中間設備400之熱交換器401。自第2取得部4取得之空氣亦可於汽化裝置104中汽化LNG,且使經冷卻之空氣流通於熱交換器401,冷卻第2中間設備400之第2作動介質。藉由使用第2中間設備400,減少溫度差發電裝置200之污染。The second intermediate device 400 may be an intermediate fluid type vaporizer (Intermediate Fluid type Vaporizer: IFV). For example, the second acquisition unit 4 may provide a blower 140 on the downstream side and circulate air through the vaporization device 104 or the heat exchanger 401 of the second intermediate device 400 as the second heat medium. The air obtained from the second obtaining part 4 may also vaporize LNG in the vaporization device 104, and the cooled air may flow through the heat exchanger 401 to cool the second operating medium of the second intermediate equipment 400. By using the second intermediate device 400, the pollution of the temperature difference power generation device 200 is reduced.

[變化例] 上述實施形態之發電系統1取得海水作為熱介質。應用發電系統1之場所亦可非海洋之附近。若來自湖、川、池、貯水槽、地下水等水源之水為滿足特定條件者,則發電系統1亦可取得該等水作為熱介質。發電系統1除為地面之設備外,亦可為設置於船體內具備再氣體化設備之浮體式LNG貯藏再氣體化設備(FSRU:Floating Storage & Regasification Unit)之設備。FSRU可為新造船,亦可為改造現有之船體而設計者。於發電系統1設置於FSRU之情形時,可靈活對應按季節等之時期變動之電力需要。[Change example] The power generation system 1 of the above-mentioned embodiment acquires seawater as a heat medium. The place where the power generation system 1 is applied may not be near the ocean. If the water from lakes, rivers, ponds, water storage tanks, groundwater and other water sources meets specific conditions, the power generation system 1 can also obtain the water as a heat medium. In addition to ground equipment, the power generation system 1 can also be a floating LNG storage and regasification unit (FSRU: Floating Storage & Regasification Unit) installed in the ship's body and equipped with regasification equipment. FSRU can be designed for newbuildings, or for retrofitting existing hulls. When the power generation system 1 is installed in the FSRU, it can flexibly respond to power needs that vary according to seasons and other periods.

發電系統1雖自表層海水取得具有溫熱之溫熱熱介質,但不限定於此,發電機105亦可利用燃燒經汽化之LNG時排出之溫熱、或發電廠以外之工廠之餘熱、FSRU之引擎之餘熱、及地熱等其他溫熱,加溫海水、上述水源之水、發電系統1共通使用之冷卻水等作動流體等產生溫熱熱介質。發電系統1亦可將經汽化之LNG之冷溫之潛熱利用於附帶設備Q。Although the power generation system 1 obtains a warm heat medium with warm heat from the surface seawater, it is not limited to this. The generator 105 can also use the warm heat discharged when the vaporized LNG is burned, or the waste heat of factories other than the power plant, FSRU Engine waste heat, geothermal heat and other warm heat, heating sea water, water from the above-mentioned water source, and working fluids such as cooling water commonly used by the power generation system 1 generate warm heat medium. The power generation system 1 can also utilize the latent heat of the vaporized LNG in the ancillary equipment Q.

以上,雖使用實施形態對用於實施本發明之形態進行說明,但本發明並非限定於此種實施形態者,可於不脫離本發明之主旨之範圍內追加各種變更及置換。例如,雖於溫度差發電裝置200之冷熱源使用LNG,但未限定於此,亦可使用其他低溫之液化氣體。As mentioned above, although the form for implementing the present invention has been described using embodiments, the present invention is not limited to such embodiments, and various changes and substitutions can be added without departing from the spirit of the present invention. For example, although LNG is used as the cold and heat source of the temperature difference power generation device 200, it is not limited to this, and other low-temperature liquefied gases may also be used.

1:發電系統 1A:發電系統 1B:發電系統 1C:發電系統 1D:發電系統 1E:發電系統 2:取得部 3:第1取得部 4:第2取得部 7:淡水化裝置 8:熱交換器 100:發電設備 100A:發電設備 101:第1貯藏部 102:壓縮機 103:第2貯藏部 104:汽化裝置 105:發電機 140:鼓風機 200:溫度差發電裝置 200A1:溫度差發電裝置 200A2:溫度差發電裝置 201:蒸發器 202:凝結器 203:發電機 205:泵 208:排出口 210:流路 300:第1中間設備 301:熱交換器 302:泵 310:流路 400:第2中間設備 401:熱交換器 402:泵 410:配管 B:配管 C:配管 D:配管 F:配管 G:氣體配管 H:配管 Q:附帶設備 Q1:空調設備 Q2:養殖設備 Q3:工場 Q4:農場1: Power generation system 1A: Power generation system 1B: Power generation system 1C: Power generation system 1D: Power generation system 1E: Power generation system 2: Acquisition department 3: The first acquisition part 4: The second acquisition part 7: Desalination device 8: Heat exchanger 100: power generation equipment 100A: power generation equipment 101: First Storage Department 102: Compressor 103: Second Storage Department 104: Vaporization device 105: Generator 140: Blower 200: Temperature difference power generation device 200A1: Temperature difference power generation device 200A2: Temperature difference power generation device 201: Evaporator 202: Condenser 203: Generator 205: Pump 208: Outlet 210: Flow Path 300: The first intermediate device 301: Heat Exchanger 302: Pump 310: Flow Path 400: 2nd intermediate device 401: Heat Exchanger 402: Pump 410: Piping B: Piping C: Piping D: Piping F: Piping G: Gas piping H: Piping Q: Incidental equipment Q1: Air conditioning equipment Q2: Farming equipment Q3: Workshop Q4: Farm

圖1係顯示本發明之第1實施形態之發電系統之構成之圖。 圖2係顯示第1實施形態之發電系統之熱收支之圖。 圖3係顯示第2實施形態之發電系統之構成之圖。 圖4係顯示第3實施形態之發電系統之熱収支之圖。 圖5係顯示第4實施形態之發電系統之熱収支之圖。 圖6係顯示第5實施形態之發電系統之構成之圖。 圖7係顯示第6實施形態之發電系統之構成之圖。Fig. 1 is a diagram showing the configuration of a power generation system according to the first embodiment of the present invention. Fig. 2 is a diagram showing the heat balance of the power generation system of the first embodiment. Fig. 3 is a diagram showing the configuration of the power generation system of the second embodiment. Fig. 4 is a diagram showing the heat balance of the power generation system of the third embodiment. Fig. 5 is a diagram showing the heat balance of the power generation system of the fourth embodiment. Fig. 6 is a diagram showing the configuration of the power generation system of the fifth embodiment. Fig. 7 is a diagram showing the configuration of the power generation system of the sixth embodiment.

1:發電系統 1: Power generation system

2:取得部 2: Acquisition department

3:第1取得部 3: The first acquisition part

4:第2取得部 4: The second acquisition part

100:發電設備 100: power generation equipment

101:第1貯藏部 101: First Storage Department

102:壓縮機 102: Compressor

103:第2貯藏部 103: Second Storage Department

104:汽化裝置 104: Vaporization device

105:發電機 105: Generator

200:溫度差發電裝置 200: Temperature difference power generation device

201:蒸發器 201: Evaporator

202:凝結器 202: Condenser

203:發電機 203: Generator

205:泵 205: Pump

208:排出口 208: Outlet

210:流路 210: Flow Path

B:配管 B: Piping

C:配管 C: Piping

D:配管 D: Piping

F:配管 F: Piping

G:氣體配管 G: Gas piping

H:配管 H: Piping

Q:附帶設備 Q: Incidental equipment

Q1:空調設備 Q1: Air conditioning equipment

Q2:養殖設備 Q2: Farming equipment

Q3:工場 Q3: Workshop

Q4:農場 Q4: Farm

Claims (14)

一種發電系統,其係利用由使用液化氣體之設備產生之餘熱進行發電者,且具備: 取得部,其取得熱介質; 汽化裝置,其以上述熱介質為熱源而將上述液化氣體汽化;及 熱機構,其使用低溫熱介質與溫熱熱介質之溫度差,使作動介質產生汽化與凝結之循環而運作,上述低溫熱介質以由上述汽化裝置進行熱交換而排出之冷熱為熱源,上述溫熱熱介質具有與上述低溫熱介質相比溫度較高的溫熱。A power generation system that utilizes waste heat generated by equipment using liquefied gas for power generation, and has: The acquisition department, which acquires the heat medium; A vaporization device that uses the heat medium as a heat source to vaporize the liquefied gas; and The heating mechanism uses the temperature difference between the low temperature heating medium and the warm heating medium to cause the actuating medium to generate a cycle of vaporization and condensation to operate. The low temperature heating medium uses the cold heat discharged by the vaporization device for heat exchange as a heat source, The warm heat medium has warm heat that is higher in temperature than the low temperature heat medium. 如請求項1之發電系統,其中 上述取得部取得具有至少TOC 1.3 [mg/l]以下之特定條件之水作為上述熱介質。Such as the power generation system of claim 1, where The acquisition unit acquires water with a specific condition of at least TOC 1.3 [mg/l] or less as the heat medium. 如請求項2之發電系統,其中 上述取得部取得具有至少深100 [m]以上之特定條件之海水作為上述熱介質。Such as the power generation system of claim 2, where The acquisition unit acquires seawater with a specific condition with a depth of at least 100 [m] or more as the heat medium. 如請求項2之發電系統,其中 使上述水流通於上述汽化裝置而防止生物附著於上述汽化裝置之內部。Such as the power generation system of claim 2, where The water is passed through the vaporization device to prevent organisms from adhering to the inside of the vaporization device. 如請求項1之發電系統,其進而具備: 附帶設備,其利用流通於上述熱機構之上述溫熱熱介質之溫度或流通於上述熱機構之上述低溫熱介質之溫度。Such as the power generation system of claim 1, which further has: An accessory device that uses the temperature of the warm heating medium circulating in the heating mechanism or the temperature of the low-temperature heating medium circulating in the heating mechanism. 如請求項1之發電系統,其進而具備: 空調設備,其利用流通於上述熱機構之上述低溫熱介質之冷溫。Such as the power generation system of claim 1, which further has: An air conditioner that uses the cold temperature of the low-temperature heat medium circulating in the heat mechanism. 如請求項3之發電系統,其進而具備: 養殖設備,其使用流通於上述熱機構之上述海水進行海產物之養殖。Such as the power generation system of claim 3, which further has: Farming equipment, which uses the above sea water circulating in the above heat mechanism for the cultivation of seafood. 如請求項3之發電系統,其進而具備: 工廠,其製造由流通於上述熱機構之上述海水產生之副產品。Such as the power generation system of claim 3, which further has: A factory that manufactures by-products produced by the sea water circulating in the heat mechanism. 如請求項3之發電系統,其進而具備: 設備,其使用流通於上述熱機構之上述海水進行農作物之栽培或貯藏。Such as the power generation system of claim 3, which further has: A device for cultivating or storing crops using the seawater circulating in the heating mechanism. 如請求項1至8中任一項之發電系統,其進而具備: 再生部,其收集由上述液化氣體產生之揮發氣體,利用剩餘電力凝結上述揮發氣體而產生再生液化氣體。For example, the power generation system of any one of claims 1 to 8, which further has: The regeneration part collects the volatile gas generated from the above-mentioned liquefied gas, and uses the surplus power to condense the above-mentioned volatile gas to generate a regenerated liquefied gas. 如請求項10之發電系統,其中 上述取得部具備: 第1取得部,其取得成為將上述作動介質汽化之熱源之第1熱介質;及 第2取得部,其取得成為將上述液化氣體汽化且凝結上述作動介質之熱源之第2熱介質。Such as the power generation system of claim 10, where The above-mentioned acquisition department has: The first acquisition part, which acquires the first heat medium that becomes the heat source for vaporizing the above-mentioned actuating medium; and The second acquisition unit acquires a second heat medium that becomes a heat source that vaporizes the liquefied gas and condenses the operating medium. 如請求項11之發電系統,其具備: 第1中間設備,其設置於上述第1取得部與上述熱機構之間;且 上述第1中間設備供以上述第1熱介質為熱源之上述溫熱熱介質循環。Such as the power generation system of claim 11, which has: A first intermediate device, which is provided between the first obtaining part and the thermal mechanism; and The first intermediate device supplies the warm heating medium circulating with the first heating medium as a heat source. 如請求項12之發電系統,其具備: 第2中間設備,其設置於上述第2取得部與上述汽化裝置之間;且 上述第2中間設備供藉由以上述第2熱介質為熱源之上述汽化裝置予以冷卻之上述低溫熱介質循環。Such as the power generation system of claim 12, which has: A second intermediate device, which is provided between the second acquisition unit and the vaporization device; and The second intermediate equipment circulates the low-temperature heat medium cooled by the vaporization device using the second heat medium as a heat source. 一種發電方法,其係利用由使用液化氣體之設備產生之餘熱進行發電者,且具備以下步驟: 取得熱介質; 以上述熱介質為熱源,於汽化裝置中將上述液化氣體汽化; 以藉由上述汽化裝置之熱交換而排出之冷熱為熱源,將低溫熱介質冷卻; 取得具有與上述低溫熱介質相比溫度較高之溫熱的溫熱熱介質; 以上述溫熱熱介質為熱源使作動介質汽化,而由熱機構之發電機進行發電;及 以上述低溫熱介質為熱源,將流通於上述發電機之汽化後之上述作動介質凝結。A power generation method that uses waste heat generated by equipment using liquefied gas for power generation, and has the following steps: Get heat medium; Using the above-mentioned heat medium as a heat source, vaporize the above-mentioned liquefied gas in a vaporization device; Use the cold heat discharged by the heat exchange of the above-mentioned vaporization device as the heat source to cool the low-temperature heat medium; Obtain a warm heat medium with a higher temperature than the above-mentioned low temperature heat medium; Use the above-mentioned warm heating medium as the heat source to vaporize the actuating medium, and the generator of the heating mechanism generates electricity; and The above-mentioned low-temperature heat medium is used as a heat source to condense the above-mentioned operating medium after vaporization circulating in the above-mentioned generator.
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