JPWO2015198656A1 - Heat supply system - Google Patents

Heat supply system Download PDF

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JPWO2015198656A1
JPWO2015198656A1 JP2016529114A JP2016529114A JPWO2015198656A1 JP WO2015198656 A1 JPWO2015198656 A1 JP WO2015198656A1 JP 2016529114 A JP2016529114 A JP 2016529114A JP 2016529114 A JP2016529114 A JP 2016529114A JP WO2015198656 A1 JPWO2015198656 A1 JP WO2015198656A1
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heat
compressor
supply system
compression
heat medium
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JP6591412B2 (en
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知義 瀧口
知義 瀧口
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Oshima Shipbuilding Co Ltd
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Oshima Shipbuilding Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D13/00—Combinations of two or more machines or engines
    • F01D13/02—Working-fluid interconnection of machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants 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
    • F01K23/06—Plants 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 combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants 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 combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • F02G5/02—Profiting from waste heat of exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

本発明は移動体の原動機の排出ガスから回収される熱エネルギーを有効利用する仕組みを提供する。本発明の一実施形態にかかる熱供給システム１は、原動機１１の排出ガスから熱回収を行う排ガスエコノマイザ１２と、排ガスエコノマイザ１２により回収された熱で加熱された熱媒体から蒸気を分離するボイラ１３と、ボイラ１３により分離された蒸気を熱利用装置１５に供給する熱供給系統を備える。熱供給系統における蒸気の移動経路上には、熱供給システム１の運転モードを切り替える開閉弁２１、開閉弁２２、開閉弁２３と、圧縮・発電装置２０が配置されている。原動機１１の運転状態によって排ガスエコノマイザ１２から熱利用装置１５へと供給される熱エネルギーが不足する場合、熱供給システム１は圧縮モードで動作し、ボイラ１３から圧縮・発電装置２０へと導かれた蒸気が圧縮・発電装置２０において昇圧された後、熱利用装置１５へと供給される。The present invention provides a mechanism for effectively using thermal energy recovered from exhaust gas of a prime mover of a moving body. A heat supply system 1 according to an embodiment of the present invention includes an exhaust gas economizer 12 that recovers heat from exhaust gas from a motor 11, and a boiler 13 that separates steam from a heat medium heated by heat recovered by the exhaust gas economizer 12. And a heat supply system for supplying the steam separated by the boiler 13 to the heat utilization device 15. An on-off valve 21, an on-off valve 22, an on-off valve 23, and a compression / power generation device 20 for switching the operation mode of the heat supply system 1 are disposed on the steam movement path in the heat supply system. When the heat energy supplied from the exhaust gas economizer 12 to the heat utilization device 15 is insufficient due to the operation state of the prime mover 11, the heat supply system 1 is operated in the compression mode and is led from the boiler 13 to the compression / power generation device 20. The steam is boosted in the compression / power generation device 20 and then supplied to the heat utilization device 15.

Description

本発明は、移動体の原動機の排出ガスから回収した熱を利用するための技術に関する。   The present invention relates to a technique for using heat recovered from exhaust gas of a prime mover of a moving body.

原動機の排出ガスから熱回収を行い熱利用施設で回収した熱を利用するための技術がある。例えば、特許文献１には、原動機の排出ガスで予熱した後に周囲環境から得られる熱等で加熱した熱媒体により生成した第１の蒸気を圧縮機で昇温昇圧し、原動機の排出ガスで予熱した後に加圧ポンプで第１の蒸気よりも高圧にした後に第１の蒸気で加熱した熱媒体で第２の蒸気を生成し、第２の蒸気を圧縮機で圧縮した後に熱利用施設に供給するエネルギー供給システムが提案されている。   There is a technology for recovering heat from the exhaust gas of the prime mover and using the heat recovered at the heat utilization facility. For example, in Patent Document 1, the first steam generated by a heat medium heated by the heat obtained from the surrounding environment after preheating with the exhaust gas of the prime mover is heated and pressurized by the compressor, and preheated by the exhaust gas of the prime mover. After that, the second steam is generated by the heat medium heated by the first steam after the pressure is made higher than that of the first steam by the pressurizing pump, and the second steam is compressed by the compressor and then supplied to the heat utilization facility. An energy supply system has been proposed.

特開２００７−３３３３３６号公報JP 2007-333336 A

船舶等の移動体は移動のための推進力を発生する原動機を搭載している。移動体に搭載される原動機の排出ガスは通常、大気よりも熱エネルギー量が多いため、排ガスエコノマイザ（または節炭器）と呼ばれる熱交換器により熱媒体としての水を加熱し、加熱により水蒸気となった熱媒体を原動機の燃料や潤滑油を加熱する加熱装置や移動体内を暖房する暖房装置等の熱利用装置へ供給する仕組みがある。   A moving body such as a ship is equipped with a prime mover that generates a driving force for movement. Since the exhaust gas of the prime mover mounted on a moving body usually has a larger amount of heat energy than the atmosphere, water as a heat medium is heated by a heat exchanger called an exhaust gas economizer (or economizer), There is a mechanism for supplying the generated heat medium to a heat utilization device such as a heating device for heating the fuel or lubricating oil of the prime mover or a heating device for heating the moving body.

移動体に搭載される原動機の排出ガスの熱エネルギー量は、原動機の熱効率の向上に伴って年々減少傾向にある。従って、上述の仕組みにおいて、原動機の計画された常用使用状態においても熱利用装置に必要な蒸気量を供給できない場合がある。また、移動体に搭載される原動機の排出ガスの熱エネルギー量は、プラント等の非移動体において利用される原動機と異なり、移動体の移動状態によって大きく異なる。例えば、移動体が低速で移動をしている場合や、寒冷地帯を移動している場合は、移動体が高速で移動をしている場合や熱帯地域を移動している場合と比べ原動機の排出ガスの熱量が低くなり、熱利用装置に対する蒸気量の不足が助長される、という問題がある。   The amount of heat energy of the exhaust gas of the prime mover mounted on the moving body tends to decrease year by year as the thermal efficiency of the prime mover increases. Therefore, in the above-described mechanism, there may be a case where the necessary steam amount cannot be supplied to the heat utilization device even in the planned normal use state of the prime mover. In addition, the amount of heat energy of the exhaust gas of the prime mover mounted on the moving body differs greatly depending on the moving state of the moving body, unlike the prime mover used in a non-moving body such as a plant. For example, if the moving body is moving at a low speed or moving in a cold region, the prime mover is discharged compared to the case where the moving body is moving at a high speed or moving in the tropical region. There exists a problem that the calorie | heat amount of gas becomes low and the lack of the vapor | steam amount with respect to a heat utilization apparatus is promoted.

上記の問題を回避するための従来技術として、熱利用装置に供給される蒸気量が不足する場合、熱媒体をバーナーで加熱（追い炊き）することにより昇温昇圧させた後、熱利用装置に供給する仕組みが実用化されている。この従来技術による場合、バーナーによる加熱時におけるエネルギー損失が大きく、排出ガスからの熱エネルギー回収効果が損なわれる。   As a conventional technique for avoiding the above problem, when the amount of steam supplied to the heat utilization device is insufficient, the heat utilization device is heated and heated by a burner (cooking) and then heated to the heat utilization device. The supply system has been put into practical use. In the case of this prior art, the energy loss during heating by the burner is large, and the effect of recovering thermal energy from the exhaust gas is impaired.

本発明は上述の背景に鑑みてなされたものであり、従来技術と比べ、移動体の原動機の排出ガスの熱エネルギーを多く回収し、かつ有効利用する仕組みを提供することを目的とする。   The present invention has been made in view of the above-described background, and an object of the present invention is to provide a mechanism for recovering and effectively utilizing a large amount of thermal energy of exhaust gas from a moving motor as compared with the prior art.

上述した課題を解決するために、本発明は、移動体に推進力を与える原動機の排出ガスと熱媒体との間の熱交換を行う熱交換器と、前記熱交換器において加熱された前記熱媒体を前記移動体に搭載された熱利用装置へと供給する熱供給系統と、前記熱供給系統における前記熱媒体の移動経路上に配置され、前記熱媒体を所定の圧力となるまで圧縮する圧縮機とを備える熱供給システムを提案する。   In order to solve the above-described problems, the present invention provides a heat exchanger for exchanging heat between the exhaust gas of the prime mover that gives propulsion to the moving body and the heat medium, and the heat heated in the heat exchanger. A heat supply system that supplies a medium to a heat utilization device mounted on the moving body, and a compression that is arranged on a movement path of the heat medium in the heat supply system and compresses the heat medium to a predetermined pressure. A heat supply system with a machine is proposed.

上記の熱供給システムの一態様において、前記熱供給系統は、前記圧縮機が動作する場合に前記熱媒体が前記圧縮機を経由して前記熱利用装置へと導かれ、前記圧縮機が動作しない場合に前記熱媒体が前記圧縮機を経由しないで前記熱利用装置へと導かれるように、前記熱媒体の移動経路を切り替える切替手段を備える、という構成が採用されてもよい。   In one aspect of the heat supply system, the heat supply system is configured such that when the compressor operates, the heat medium is guided to the heat utilization device via the compressor, and the compressor does not operate. In some cases, a configuration may be employed in which switching means for switching the moving path of the heat medium is provided so that the heat medium is guided to the heat utilization device without passing through the compressor.

また、上記の熱供給システムの一態様において、前記圧縮機を駆動する電動モータを備え、前記圧縮機は前記電動モータにより駆動される容積型圧縮機であり、前記圧縮機は、前記熱交換器において加熱された前記熱媒体のうち前記熱利用装置へ供給されない余剰分が圧縮時と逆方向に圧送されることによりタービンとして機能し、前記電動モータは、タービンとして機能する前記圧縮機により駆動されて発電を行う発電機として機能し、前記切替手段は、前記圧縮機が圧縮を行う場合に前記熱媒体が前記圧縮機の第１の開口部から前記圧縮機の内部へ流入するように前記熱媒体を前記圧縮機に導き、前記圧縮機がタービンとして機能する場合に前記熱媒体が前記圧縮機の第２の開口部から前記圧縮機の内部へ流入するように前記熱媒体を前記圧縮機に導くように、前記熱媒体の移動経路を切り替える、という構成が採用されてもよい。   Further, in one aspect of the above heat supply system, an electric motor that drives the compressor is provided, the compressor is a positive displacement compressor that is driven by the electric motor, and the compressor is the heat exchanger. The surplus portion of the heat medium that has been heated in step 1 is not fed to the heat utilization device and is pumped in the direction opposite to that during compression, thereby functioning as a turbine, and the electric motor is driven by the compressor functioning as a turbine. And the switching means is configured so that the heat medium flows into the compressor from the first opening of the compressor when the compressor performs compression. A medium is directed to the compressor, and the heat medium is passed through the second opening of the compressor into the compressor so that the heat medium flows into the compressor when the compressor functions as a turbine. To direct to the compressor, switching the moving path of the heat medium, it may be employed configured that.

本発明によれば、移動体の原動機の排出ガスの熱エネルギー量が不足しても、熱利用装置に熱を供給するための熱媒体が所定の圧力となるまで圧縮されて、熱利用装置に対し必要とされる温度の熱媒体が供給される。その結果、排ガスエコノマイザから供給される熱媒体の温度が、従来技術では熱回収ができなかった低温領域まで下がっても、本発明によれば排ガスエネルギー回収が実現される。その際、本発明における熱媒体の圧縮に要する熱エネルギー量は従来技術におけるバーナーによる熱媒体の加熱に要する熱エネルギー量よりも少ないため、効率的な熱エネルギーの回収が実現される。   According to the present invention, even when the amount of heat energy of the exhaust gas of the motor of the moving body is insufficient, the heat medium for supplying heat to the heat utilization device is compressed until a predetermined pressure is reached, and the heat utilization device is obtained. On the other hand, a heat medium having a required temperature is supplied. As a result, even if the temperature of the heat medium supplied from the exhaust gas economizer falls to a low temperature region where heat recovery was not possible with the prior art, exhaust gas energy recovery is realized according to the present invention. At that time, since the amount of heat energy required for compression of the heat medium in the present invention is smaller than the amount of heat energy required for heating the heat medium by the burner in the prior art, efficient heat energy recovery is realized.

本発明の一実施形態にかかる熱供給システム（通常モード）の構成を示した図である。It is the figure which showed the structure of the heat supply system (normal mode) concerning one Embodiment of this invention. 本発明の一実施形態にかかる熱供給システム（圧縮モード）の構成を示した図である。It is the figure which showed the structure of the heat supply system (compression mode) concerning one Embodiment of this invention. 本発明の一実施形態にかかる熱供給システム（発電モード）の構成を示した図である。It is the figure which showed the structure of the heat supply system (electric power generation mode) concerning one Embodiment of this invention.

［実施形態］
以下、本発明の一実施形態にかかる熱供給システム１を説明する。熱供給システム１は、通常モード、圧縮モード、発電モードという３つの運転モードのいずれかで運転される。図１は通常モードで運転時の熱供給システム１の構成を示し、図２は圧縮モードで運転時の熱供給システム１の構成を示し、図３は発電モードで運転時の熱供給システム１の構成を示す。[Embodiment]
Hereinafter, the heat supply system 1 concerning one Embodiment of this invention is demonstrated. The heat supply system 1 is operated in one of three operation modes: a normal mode, a compression mode, and a power generation mode. 1 shows the configuration of the heat supply system 1 during operation in the normal mode, FIG. 2 shows the configuration of the heat supply system 1 during operation in the compression mode, and FIG. 3 shows the configuration of the heat supply system 1 during operation in the power generation mode. The configuration is shown.

熱供給システム１は、例えば船舶、列車、航空機、自動車等の移動体に搭載され、移動体の移動に伴い移動する。熱供給システム１は、移動体に推進力を与える原動機１１と、原動機１１の排出ガスから熱回収を行う排ガスエコノマイザ１２（熱交換器の一例）と、排ガスエコノマイザ１２が回収した熱により加熱された水から水蒸気を分離するボイラ１３と、排ガスエコノマイザ１２とボイラ１３との間で水を循環させるボイラ循環水ポンプ１４と、ボイラ１３により分離された水蒸気の供給を受けて当該水蒸気の熱を利用する１以上の熱利用装置１５−１〜１５−ｉ（ｉは任意の自然数）を備える。以下、熱利用装置１５−１〜１５−ｉを総称して「熱利用装置１５」という。   The heat supply system 1 is mounted on a moving body such as a ship, a train, an aircraft, and an automobile, and moves as the moving body moves. The heat supply system 1 is heated by a prime mover 11 that gives propulsion to a moving body, an exhaust gas economizer 12 (an example of a heat exchanger) that recovers heat from exhaust gas of the prime mover 11, and heat recovered by the exhaust gas economizer 12 A boiler 13 that separates water vapor from water, a boiler circulating water pump 14 that circulates water between the exhaust gas economizer 12 and the boiler 13, receives supply of water vapor separated by the boiler 13, and uses the heat of the water vapor One or more heat utilization devices 15-1 to 15-i (i is an arbitrary natural number) are provided. Hereinafter, the heat utilization devices 15-1 to 15-i are collectively referred to as “heat utilization device 15”.

また、熱供給システム１は、ボイラ１３において分離される水蒸気の圧力が過剰に高圧である場合に水蒸気の余剰分を冷却系統に導くために開閉される余剰蒸気ダンプ弁１６と、余剰蒸気ダンプ弁１６の開放により供給される水蒸気および熱利用装置１５からのドレンを冷却するドレンクーラー１７と、ドレンクーラー１７により液体となった水を受容するカスケードタンク１８と、カスケードタンク１８に受容された水をボイラ１３へと導く給水ポンプ１９を備える。   In addition, the heat supply system 1 includes an excess steam dump valve 16 that is opened and closed to guide the excess steam to the cooling system when the pressure of the steam separated in the boiler 13 is excessively high, and an excess steam dump valve. The drain cooler 17 that cools the steam supplied from the opening 16 and the drain from the heat utilization device 15, the cascade tank 18 that receives the water that has become liquid by the drain cooler 17, and the water that is received in the cascade tank 18 A water supply pump 19 that leads to the boiler 13 is provided.

また、熱供給システム１は、水蒸気がボイラ１３から熱利用装置１５へと移動する移動経路上に配置されて、圧縮モードにおいては、圧力が不足している水蒸気を所定の圧力となるまで圧縮する圧縮機として機能し、発電モードにおいては、余剰の水蒸気の供給を受けて発電を行う発電機として機能する圧縮・発電装置２０と、運転モードの切り替えに伴い連係して開閉されて水蒸気を圧縮・発電装置２０へと供給する供給経路を切り替える開閉弁２１、開閉弁２２、および開閉弁２３を備える。   Further, the heat supply system 1 is arranged on a moving path through which the steam moves from the boiler 13 to the heat utilization device 15, and in the compression mode, compresses the steam whose pressure is insufficient until it reaches a predetermined pressure. In the power generation mode, the compressor / power generation device 20 functions as a power generator that generates power by receiving supply of excess steam, and the steam is compressed / opened in conjunction with the switching of the operation mode. An on-off valve 21, an on-off valve 22, and an on-off valve 23 that switch a supply path to be supplied to the power generation device 20 are provided.

また、熱供給システム１は、原動機１１から排出される排出ガスを排ガスエコノマイザ１２へと導く経路３１と、排ガスエコノマイザ１２において熱回収の行われた後の排出ガスを、例えば移動体の外部へと導く経路３２を備える。経路３１、排ガスエコノマイザ１２、および経路３２は、排気系統を構成する。   Further, the heat supply system 1 sends the exhaust gas discharged from the prime mover 11 to the exhaust gas economizer 12, and the exhaust gas after heat recovery is performed in the exhaust gas economizer 12, for example, to the outside of the moving body. A guide path 32 is provided. The path 31, the exhaust gas economizer 12, and the path 32 constitute an exhaust system.

また、熱供給システム１は、排ガスエコノマイザ１２において加熱されて液体と気体の混合状態となった水を排ガスエコノマイザ１２からボイラ１３へと導く経路４１と、ボイラ１３において水蒸気が分離された後の水とカスケードタンク１８から導かれた水をボイラ１３から排ガスエコノマイザ１２へと導く経路４２を備える。ボイラ循環水ポンプ１４は経路４２の上に配置される。排ガスエコノマイザ１２、経路４１、ボイラ１３、経路４２、およびボイラ循環水ポンプ１４は、熱回収系統を構成する。   In addition, the heat supply system 1 includes a path 41 that guides water that has been heated in the exhaust gas economizer 12 to a mixed state of liquid and gas from the exhaust gas economizer 12 to the boiler 13, and water after water vapor has been separated in the boiler 13. And a path 42 for guiding the water guided from the cascade tank 18 from the boiler 13 to the exhaust gas economizer 12. The boiler circulating water pump 14 is disposed on the path 42. The exhaust gas economizer 12, the path 41, the boiler 13, the path 42, and the boiler circulating water pump 14 constitute a heat recovery system.

また、熱供給システム１は、ボイラ１３において分離された水蒸気をボイラ１３から受容する経路５１と、ボイラ１３において分離された水蒸気を熱利用装置１５へと導く経路６１と、経路５１から分岐して経路６１に連結される経路６２を備える。開閉弁２１は経路６２の上に配置される。ボイラ１３、経路５１、経路６２、経路６１、および熱利用装置１５は、通常モード（図１）および発電モード（図３）における熱供給系統を構成する。   Further, the heat supply system 1 branches from the path 51 for receiving the water vapor separated in the boiler 13 from the boiler 13, the path 61 for guiding the water vapor separated in the boiler 13 to the heat utilization device 15, and the path 51. A path 62 connected to the path 61 is provided. The on-off valve 21 is disposed on the path 62. The boiler 13, the path 51, the path 62, the path 61, and the heat utilization apparatus 15 constitute a heat supply system in the normal mode (FIG. 1) and the power generation mode (FIG. 3).

また、熱供給システム１は、熱利用装置１５の各々において熱利用が行われた後のドレンをドレンクーラー１７へと導く経路６３と、経路５１から分岐して水蒸気の余剰分をドレンクーラー１７へと導く経路５２と、ドレンクーラー１７からカスケードタンク１８へと水を導く経路５３と、カスケードタンク１８からボイラ１３へと水を導く経路５４を備える。給水ポンプ１９は経路５４の上に配置される。また、図１乃至図３に例示の熱供給システム１においては、熱利用装置１５−１が経路５４の上（給水ポンプ１９とボイラ１３の間）に配置されているが、経路５４が熱利用装置１５−１を介さずに直接、ボイラ１３へと水を導く構成が採用されてもよい。経路６３、経路５２、ドレンクーラー１７、経路５３、カスケードタンク１８、経路５４、給水ポンプ１９、およびボイラ１３は、ドレン回収および給水系統を構成する。   Further, the heat supply system 1 has a path 63 that guides the drain after heat is used in each of the heat utilization devices 15 to the drain cooler 17, and a branch from the path 51, and the excess water vapor is supplied to the drain cooler 17. , A path 53 for guiding water from the drain cooler 17 to the cascade tank 18, and a path 54 for guiding water from the cascade tank 18 to the boiler 13. The water supply pump 19 is disposed on the path 54. Further, in the heat supply system 1 illustrated in FIGS. 1 to 3, the heat utilization device 15-1 is disposed on the path 54 (between the feed water pump 19 and the boiler 13). A configuration in which water is directly guided to the boiler 13 without using the device 15-1 may be employed. The path 63, the path 52, the drain cooler 17, the path 53, the cascade tank 18, the path 54, the feed water pump 19, and the boiler 13 constitute a drain recovery and feed water system.

また、熱供給システム１は、経路５１から分岐して水蒸気を圧縮・発電装置２０の第１開口部２０３（後述）へと導く経路６４と、圧縮・発電装置２０の第２開口部２０４（後述）から排出される水蒸気を経路６１へと導く経路６５を備える。開閉弁２２は経路６４の上に配置される。ボイラ１３、経路５１、経路６４、圧縮・発電装置２０（圧縮装置として機能）、経路６５、経路６１、および熱利用装置１５は、圧縮モード（図２）における熱供給系統を構成する。   Further, the heat supply system 1 branches from the path 51 and leads the water vapor to the first opening 203 (described later) of the compression / power generation apparatus 20 and the second opening 204 (described later) of the compression / power generation apparatus 20. ) Is provided with a path 65 that guides the water vapor discharged from () to the path 61. The on-off valve 22 is disposed on the path 64. The boiler 13, the path 51, the path 64, the compression / power generation apparatus 20 (functioning as a compression apparatus), the path 65, the path 61, and the heat utilization apparatus 15 form a heat supply system in the compression mode (FIG. 2).

また、熱供給システム１は、経路６４から分岐して、発電モード（図３）において圧縮・発電装置２０の第１開口部２０３から排出される水蒸気を経路５２へと導く経路６６を備える。発電モード（図３）において、経路６４と経路６５は各々、圧縮モード（図２）における場合と逆方向に水蒸気を導く。経路６５、圧縮・発電装置２０（発電装置として機能）、経路６４、および経路６６は、発電モード（図３）における熱供給（対発電装置）および排出系統を構成する。   Further, the heat supply system 1 includes a path 66 that branches from the path 64 and guides the water vapor discharged from the first opening 203 of the compression / power generation apparatus 20 to the path 52 in the power generation mode (FIG. 3). In the power generation mode (FIG. 3), the path 64 and the path 65 each guide water vapor in the opposite direction to that in the compression mode (FIG. 2). The path 65, the compression / power generation apparatus 20 (functioning as a power generation apparatus), the path 64, and the path 66 constitute a heat supply (for power generation apparatus) and a discharge system in the power generation mode (FIG. 3).

原動機１１は、例えば過給器を備えるディーゼルエンジンであるが、過給器を備えないガソリンエンジンやモータなど、原動機の種別は限定されない。また、熱利用装置１５は、例えば、燃料や潤滑油を加熱する加熱装置や、移動体の内部を暖房する暖房装置であるが、熱利用装置の種別はこれらに限定されない。   The prime mover 11 is, for example, a diesel engine equipped with a supercharger, but the type of the prime mover is not limited, such as a gasoline engine or a motor not equipped with a supercharger. The heat utilization device 15 is, for example, a heating device that heats fuel or lubricating oil or a heating device that heats the inside of the moving body, but the type of the heat utilization device is not limited thereto.

圧縮・発電装置２０は、圧縮装置としての機能と発電装置としての機能を兼ね備える装置である。圧縮・発電装置２０は、圧縮機兼タービン２０１と、モータ兼発電機２０２を備える。圧縮装置として機能するときの圧縮・発電装置２０（圧縮装置モード）は、電動モータにより駆動される容積型圧縮装置であり、圧縮機兼タービン２０１（圧縮機として機能）をモータ兼発電機２０２（モータとして機能）により駆動して、第１開口部２０３から流入する水蒸気を所定の圧力となるまで圧縮した後、第２開口部２０４から排出する。圧縮・発電装置２０（圧縮装置モード）の圧縮の方式は、例えばスクリュウ型であるが、容積型であれば圧縮の方式はスクリュウ型に限定されない。   The compression / power generation device 20 is a device having both a function as a compression device and a function as a power generation device. The compression / power generation apparatus 20 includes a compressor / turbine 201 and a motor / generator 202. The compression / power generation device 20 (compression device mode) when functioning as a compression device is a positive displacement compressor driven by an electric motor, and the compressor / turbine 201 (functioning as a compressor) is replaced by a motor / generator 202 ( Driven by a function as a motor), the water vapor flowing from the first opening 203 is compressed to a predetermined pressure, and then discharged from the second opening 204. The compression method of the compression / power generation device 20 (compression device mode) is, for example, a screw type, but the compression method is not limited to the screw type as long as it is a volume type.

発電装置として機能するときの圧縮・発電装置２０（発電装置モード）は、水蒸気により回転するタービンにより駆動される発電装置であり、第２開口部２０４から圧縮・発電装置２０の内部へと圧送される水蒸気により回転する圧縮機兼タービン２０１（タービンとして機能）によりモータ兼発電機２０２（発電機として機能）を駆動して、発電を行う。なお、圧縮機兼タービン２０１を通過した水蒸気は第１開口部２０３から排出される。圧縮・発電装置２０は、発電装置として機能するために、必要に応じて周波数制御や交流・直流間の変換等のためのインバータやコンバータ等の制御部を備える。なお、図１乃至図３において、圧縮装置として機能する圧縮・発電装置２０に電力を供給する電源装置と、発電装置として機能する圧縮・発電装置２０により発電された電力を利用する電力利用装置（例えば蓄電池）は図示を省略している。   The compression / power generation device 20 (power generation device mode) when functioning as a power generation device is a power generation device driven by a turbine rotated by steam, and is pumped from the second opening 204 into the compression / power generation device 20. The motor / generator 202 (functioning as a generator) is driven by a compressor / turbine 201 (functioning as a turbine) that is rotated by the water vapor to generate electricity. The water vapor that has passed through the compressor / turbine 201 is discharged from the first opening 203. In order to function as a power generation device, the compression / power generation device 20 includes a control unit such as an inverter or a converter for frequency control, conversion between AC and DC, or the like as necessary. 1 to 3, a power supply device that supplies power to the compression / power generation device 20 that functions as a compression device, and a power utilization device that uses power generated by the compression / power generation device 20 that functions as a power generation device ( For example, a storage battery) is not shown.

（通常モード）
ボイラ１３により分離された水蒸気の圧力が不足せず、かつ、過剰でもない場合、熱供給システム１は通常モードで運転される。通常モードにおいては、開閉弁２１が開放され、開閉弁２２と開閉弁２３が閉鎖される（図１）。また、圧縮・発電装置２０は電源装置および電力利用装置のいずれとも電気的に切断され、圧縮装置および発電装置のいずれとしても動作しない。(Normal mode)
When the pressure of the water vapor separated by the boiler 13 is neither insufficient nor excessive, the heat supply system 1 is operated in the normal mode. In the normal mode, the on-off valve 21 is opened, and the on-off valve 22 and the on-off valve 23 are closed (FIG. 1). Further, the compression / power generation device 20 is electrically disconnected from both the power supply device and the power utilization device, and does not operate as either the compression device or the power generation device.

通常モードにおいては、ボイラ１３により分離された水蒸気は、経路５１、経路６２、経路６１を経由して熱利用装置１５に供給される。   In the normal mode, the water vapor separated by the boiler 13 is supplied to the heat utilization device 15 via the path 51, the path 62, and the path 61.

（圧縮モード）
ボイラ１３により分離された水蒸気の圧力が不足する場合、熱供給システム１は圧縮モードで運転される。圧縮モードにおいては、開閉弁２２が開放され、開閉弁２１と開閉弁２３が閉鎖される（図２）。また、圧縮・発電装置２０は電源装置と電気的に接続され、圧縮装置として機能する。(Compression mode)
When the pressure of the water vapor separated by the boiler 13 is insufficient, the heat supply system 1 is operated in the compression mode. In the compression mode, the on-off valve 22 is opened, and the on-off valve 21 and the on-off valve 23 are closed (FIG. 2). The compression / power generation apparatus 20 is electrically connected to the power supply apparatus and functions as a compression apparatus.

圧縮モードにおいては、ボイラ１３により分離された水蒸気は、経路５１、経路６４を経由して第１開口部２０３から圧縮・発電装置２０に流入し、圧縮・発電装置２０において所定の圧力まで圧縮された後、第２開口部２０４から排出されて、経路６５、経路６１を経由して熱利用装置１５に供給される。圧縮モードにおいては、低圧かつ低温な水蒸気が圧縮・発電装置２０における圧縮により昇圧され昇温された後、熱利用装置１５に供給されるため、熱利用装置１５は必要な温度の熱供給を受けることができる。   In the compression mode, the water vapor separated by the boiler 13 flows into the compression / power generation device 20 from the first opening 203 via the path 51 and the path 64 and is compressed to a predetermined pressure in the compression / power generation apparatus 20. After that, it is discharged from the second opening 204 and supplied to the heat utilization device 15 via the path 65 and the path 61. In the compression mode, low-pressure and low-temperature steam is boosted and heated by compression in the compression / power generation device 20, and then supplied to the heat utilization device 15. Therefore, the heat utilization device 15 receives heat supply at a necessary temperature. be able to.

（発電モード）
ボイラ１３により分離された水蒸気の圧力が過剰である場合、熱供給システム１は発電モードで運転される。発電モードにおいては、開閉弁２１と開閉弁２３が開放され、開閉弁２２が閉鎖される（図３）。また、圧縮・発電装置２０は電力利用装置に電気的に接続され、発電装置として機能する。(Power generation mode)
When the pressure of the water vapor separated by the boiler 13 is excessive, the heat supply system 1 is operated in the power generation mode. In the power generation mode, the on-off valve 21 and the on-off valve 23 are opened, and the on-off valve 22 is closed (FIG. 3). Further, the compression / power generation device 20 is electrically connected to the power utilization device and functions as a power generation device.

発電モードにおいては、ボイラ１３により分離された水蒸気は、その一部が通常モードと同様に、経路５１、経路６２、経路６１を経由して熱利用装置１５に供給される。同時に、発電モードにおいては、ボイラ１３により分離された水蒸気のうち、余剰の部分が、経路５１、経路６２、経路６５を経由して第２開口部２０４から圧縮・発電装置２０に流入し、圧縮・発電装置２０において発電を行いつつ降圧された後、第１開口部２０３から排出されて、経路６４、経路６６を経由してドレン回収系統へと導かれる。   In the power generation mode, a part of the water vapor separated by the boiler 13 is supplied to the heat utilization device 15 via the path 51, the path 62, and the path 61, as in the normal mode. At the same time, in the power generation mode, the surplus portion of the water vapor separated by the boiler 13 flows into the compression / power generation device 20 from the second opening 204 via the path 51, the path 62, and the path 65, and is compressed. After being stepped down while generating power in the power generation device 20, it is discharged from the first opening 203 and guided to the drain recovery system via the path 64 and path 66.

上記のように、開閉弁２１、開閉弁２２、および開閉弁２３は、ボイラ１３において分離された水蒸気を圧縮・発電装置２０の第１開口部２０３と第２開口部２０４のいずれから圧縮・発電装置２０の内部へと流入させるかを切り替える切替手段として機能する。   As described above, the on-off valve 21, on-off valve 22, and on-off valve 23 compress and generate power from either the first opening 203 or the second opening 204 of the compression / power generation device 20 for the water vapor separated in the boiler 13. It functions as a switching means for switching whether to flow into the apparatus 20.

上述のように、熱供給システム１によれば、原動機の排出ガスの熱エネルギーが不足して通常モードでは熱利用装置１５に十分な蒸気量を供給できない場合であっても、圧縮モードにより低圧かつ低温な水蒸気を圧縮することで、バーナーによる燃焼を行うことなく、熱利用装置１５の必要とする温度の水蒸気を供給することができる。その上、低温、低圧な水蒸気により排ガスエネルギーを回収することにより、これまで回収できなかった低温域に至るまで排ガスのエネルギーを回収することが出来る。   As described above, according to the heat supply system 1, even when the heat energy of the exhaust gas of the prime mover is insufficient and a sufficient amount of steam cannot be supplied to the heat utilization device 15 in the normal mode, the pressure is reduced by the compression mode. By compressing low-temperature water vapor, it is possible to supply water vapor at a temperature required by the heat utilization device 15 without performing combustion by a burner. In addition, by recovering the exhaust gas energy with low-temperature and low-pressure steam, the energy of the exhaust gas can be recovered up to a low temperature range that could not be recovered.

また、熱供給システム１によれば、原動機の排出ガスの熱エネルギーが過剰である場合、発電モードによって、通常モードではドレンクーラー１７における放熱により利用されない熱エネルギーが発電に用いられることで有効利用される。圧縮モードにおいて熱媒体の圧縮を行う圧縮装置と、発電モードにおいて熱媒体の熱エネルギーにより発電を行う発電装置は同じ圧縮・発電装置２０がそれらを兼ねるため、制約のある移動体内の空間が有効利用されるとともに、発電装置と圧縮装置を個別に備える構成と比べて、一般的に設備コストが安価で済む。   Further, according to the heat supply system 1, when the heat energy of the exhaust gas of the prime mover is excessive, the heat energy that is not used by the heat radiation in the drain cooler 17 in the normal mode is effectively used for power generation depending on the power generation mode. The The compression device that compresses the heat medium in the compression mode and the power generation device that generates power using the heat energy of the heat medium in the power generation mode are also used by the same compression / power generation device 20, so the space inside the restricted moving body is effectively used. In addition, the equipment cost is generally low compared with the configuration in which the power generation device and the compression device are individually provided.

［変形例］
上述した実施形態は本発明の技術的思想の範囲内において様々に変形可能である。以下にそれらの変形の例を示す。なお、これらの変形例は適宜組み合わせられてもよい。[Modification]
The above-described embodiments can be variously modified within the scope of the technical idea of the present invention. Examples of these modifications are shown below. These modifications may be combined as appropriate.

（１）上述した熱供給システム１において、用いられる熱媒体は水であるものとしたが、水以外の熱媒体（水に添加物の添加を行ったものを含む）が採用されてもよい。 (1) In the heat supply system 1 described above, the heat medium used is water, but heat mediums other than water (including those obtained by adding additives to water) may be employed.

（２）上述した熱供給システム１において、通常モード、圧縮モードおよび発電モードの切り替えを行う構成として示した開閉弁２１、２２、２３および経路６２、６４、６５、６６はあくまで例示であって、他の構成が採用されてもよい。例えば上述の構成の開閉弁２１、２２、２３に代えて３方弁により熱媒体の経路の切り替えが行われる構成が採用されてもよい。また、例えば、経路６６を経路５２ではなく経路６１に接続し、圧縮・発電装置２０から排出される水蒸気をドレンクーラー１７に直接戻さず、熱利用装置１５の加熱蒸気として再利用するように経路を構成してもよい。 (2) In the heat supply system 1 described above, the on-off valves 21, 22, 23 and the paths 62, 64, 65, 66 shown as the configuration for switching between the normal mode, the compression mode, and the power generation mode are merely examples, Other configurations may be employed. For example, a configuration in which the path of the heat medium is switched by a three-way valve instead of the on-off valves 21, 22, 23 having the above-described configuration may be employed. Further, for example, the route 66 is connected to the route 61 instead of the route 52, and the water vapor discharged from the compression / power generation device 20 is not directly returned to the drain cooler 17 but is reused as the heating steam of the heat utilization device 15. May be configured.

（３）上述した熱供給システム１において、排ガスエコノマイザ１２とボイラ１３は独立分離型で各１台装備したが、其々複数台であっても、また合体型であってもよい。合体型の例として、コンポジットボイラがあり、その場合、ボイラ循環水ポンプ１４および経路４１、４２は装備されない。 (3) In the heat supply system 1 described above, the exhaust gas economizer 12 and the boiler 13 are each provided as an independent separation type, but may be a plurality of units or a combined type. As an example of the combined type, there is a composite boiler. In that case, the boiler circulating water pump 14 and the paths 41 and 42 are not equipped.

（４）上述した熱供給システム１において、運転モードの切り替えの方法は特に限定されない。例えば、開閉弁２１、開閉弁２２、および開閉弁２３の開閉と、圧縮・発電装置２０の圧縮装置と発電装置の間の切り替えの操作を作業員が手動で行うことが考えられる。また、例えば経路５１の上に圧力センサや温度センサ等の計測装置を配置するとともに、計測装置による計測結果に基づき熱利用装置１５へ供給される水蒸気の圧力または温度が不足、十分、過剰のいずれであるかを判定する判定部と、当該判定部による判定結果に基づき、開閉弁２１、開閉弁２２、および開閉弁２３の開閉と、圧縮・発電装置２０のモードの切り替えを制御する制御装置を熱供給システム１に設けることで、運転モードが作業員の操作によらずに自動的に切り替わる構成が採用されてもよい。 (4) In the heat supply system 1 described above, the operation mode switching method is not particularly limited. For example, it is conceivable that an operator manually performs an operation of opening / closing the on-off valve 21, on-off valve 22, and on-off valve 23 and switching between the compression device and the power generation device of the compression / power generation device 20. Further, for example, a measuring device such as a pressure sensor or a temperature sensor is disposed on the path 51, and the pressure or temperature of water vapor supplied to the heat utilization device 15 based on the measurement result by the measuring device is insufficient, sufficient, or excessive. A control unit that controls opening / closing of the on-off valve 21, on-off valve 22, and on-off valve 23 and switching of the mode of the compression / power generation device 20 based on a determination result by the determination unit By providing the heat supply system 1, a configuration in which the operation mode is automatically switched without depending on the operation of the worker may be employed.

（５）熱供給システム１が発電モードを備えない構成が採用されてもよい。この変形例においては、圧縮・発電装置２０に代えて、発電装置としては機能しない圧縮装置が採用される。また、この変形例において採用される圧縮装置は容積型に限定されない。この変形例においては、経路６６および開閉弁２３は不要である。従って、開閉弁２１と開閉弁２２の開閉と、圧縮装置のＯＮ／ＯＦＦの操作により、通常モード（開閉弁２１を開放し、開閉弁２２を閉鎖し、圧縮装置をＯＦＦする）と圧縮モード（開閉弁２１を閉鎖し、開閉弁２２を開放し、圧縮装置をＯＮする）の切り替えが行われる。この切り替えの操作は、作業員により手動で行われてもよいし、自動的に行われてもよい。例えば経路５１の上に温度センサや圧力センサ等の計測装置を配置するとともに、計測装置による計測結果に基づき熱利用装置１５へ供給される水蒸気の圧力または温度が不足、十分のいずれであるかを判定する判定部と、当該判定部による判定結果に基づき、開閉弁２１、および開閉弁２２の開閉と、圧縮装置のＯＮ／ＯＦＦの切り替えを制御する制御装置を熱供給システム１に設けることで、運転モードが作業員の操作によらずに自動的に切り替わる構成が採用されてもよい。 (5) A configuration in which the heat supply system 1 does not include the power generation mode may be employed. In this modification, a compression device that does not function as a power generation device is employed instead of the compression / power generation device 20. Moreover, the compression apparatus employ | adopted in this modification is not limited to a volume type. In this modification, the path 66 and the on-off valve 23 are not necessary. Therefore, by opening / closing the on-off valve 21 and on-off valve 22 and ON / OFF operation of the compression device, a normal mode (opening the on-off valve 21, closing the on-off valve 22 and turning off the compression device) and a compression mode ( The on-off valve 21 is closed, the on-off valve 22 is opened, and the compression device is turned on. This switching operation may be performed manually by an operator or automatically. For example, a measurement device such as a temperature sensor or a pressure sensor is arranged on the path 51, and whether the pressure or temperature of the water vapor supplied to the heat utilization device 15 is insufficient or sufficient based on the measurement result by the measurement device. By providing the heat supply system 1 with a determination unit that determines the opening and closing of the on-off valve 21 and the on-off valve 22 and on / off switching of the compression device based on the determination result by the determination unit and the determination unit, A configuration in which the operation mode is automatically switched without depending on the operation of the worker may be employed.

１…熱供給システム、１１…原動機、１２…排ガスエコノマイザ、１３…ボイラ、１４…ボイラ循環水ポンプ、１５…熱利用装置、１６…余剰蒸気ダンプ弁、１７…ドレンクーラー、１８…カスケードタンク、１９…給水ポンプ、２０…圧縮・発電装置、２１…開閉弁、２２…開閉弁、２３…開閉弁、３１…経路、３２…経路、４１…経路、４２…経路、５１…経路、５２…経路、５３…経路、５４…経路、６１…経路、６２…経路、６３…経路、６４…経路、６５…経路、６６…経路、２０１…圧縮機兼タービン、２０２…モータ兼発電機、２０３…第１開口部、２０４…第２開口部 DESCRIPTION OF SYMBOLS 1 ... Heat supply system, 11 ... Prime mover, 12 ... Exhaust gas economizer, 13 ... Boiler, 14 ... Boiler circulating water pump, 15 ... Heat utilization apparatus, 16 ... Excess steam dump valve, 17 ... Drain cooler, 18 ... Cascade tank, 19 DESCRIPTION OF SYMBOLS ... Water supply pump, 20 ... Compression / power generation device, 21 ... Open / close valve, 22 ... Open / close valve, 23 ... Open / close valve, 31 ... Path, 32 ... Path, 41 ... Path, 42 ... Path, 51 ... Path, 52 ... Path, 53 ... route, 54 ... route, 61 ... route, 62 ... route, 63 ... route, 64 ... route, 65 ... route, 66 ... route, 201 ... compressor / turbine, 202 ... motor / generator, 203 ... first Opening, 204 ... second opening

Claims (3)

移動体に推進力を与える原動機の排出ガスと熱媒体との間の熱交換を行う熱交換器と、
前記熱交換器において加熱された前記熱媒体を前記移動体に搭載された熱利用装置へと供給する熱供給系統と、
前記熱供給系統における前記熱媒体の移動経路上に配置され、前記熱媒体を所定の圧力となるまで圧縮する圧縮機と
を備える熱供給システム。A heat exchanger for exchanging heat between the exhaust gas of the prime mover that gives propulsion to the moving body and the heat medium;
A heat supply system for supplying the heat medium heated in the heat exchanger to a heat utilization device mounted on the moving body;
A heat supply system comprising: a compressor disposed on a movement path of the heat medium in the heat supply system and compressing the heat medium until a predetermined pressure is reached. 前記熱供給系統は、前記圧縮機が動作する場合に前記熱媒体が前記圧縮機を経由して前記熱利用装置へと導かれ、前記圧縮機が動作しない場合に前記熱媒体が前記圧縮機を経由しないで前記熱利用装置へと導かれるように、前記熱媒体の移動経路を切り替える切替手段を備える
請求項１に記載の熱供給システム。The heat supply system is configured such that when the compressor operates, the heat medium is guided to the heat utilization device via the compressor, and when the compressor does not operate, the heat medium causes the compressor to operate. The heat supply system according to claim 1, further comprising a switching unit that switches a movement path of the heat medium so that the heat medium is guided to the heat utilization apparatus without passing through the heat utilization apparatus. 前記圧縮機を駆動する電動モータを備え、
前記圧縮機は前記電動モータにより駆動される容積型圧縮機であり、
前記圧縮機は、前記熱交換器において加熱された前記熱媒体のうち前記熱利用装置へ供給されない余剰分が圧縮時と逆方向に圧送されることによりタービンとして機能し、
前記電動モータは、タービンとして機能する前記圧縮機により駆動されて発電を行う発電機として機能し、
前記切替手段は、前記圧縮機が圧縮を行う場合に前記熱媒体が前記圧縮機の第１の開口部から前記圧縮機の内部へ流入するように前記熱媒体を前記圧縮機に導き、前記圧縮機がタービンとして機能する場合に前記熱媒体が前記圧縮機の第２の開口部から前記圧縮機の内部へ流入するように前記熱媒体を前記圧縮機に導くように、前記熱媒体の移動経路を切り替える
請求項２に記載の熱供給システム。An electric motor for driving the compressor;
The compressor is a positive displacement compressor driven by the electric motor;
The compressor functions as a turbine by pumping a surplus of the heat medium heated in the heat exchanger that is not supplied to the heat utilization device in a direction opposite to that during compression,
The electric motor functions as a generator that generates power by being driven by the compressor that functions as a turbine.
The switching means guides the heat medium to the compressor so that the heat medium flows into the compressor from the first opening of the compressor when the compressor performs compression, and the compression means When the machine functions as a turbine, the heat medium travel path so as to guide the heat medium to the compressor so that the heat medium flows into the compressor from the second opening of the compressor. The heat supply system according to claim 2.
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