WO2013136606A1 - Système de production de vapeur - Google Patents

Système de production de vapeur Download PDF

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Publication number
WO2013136606A1
WO2013136606A1 PCT/JP2012/081386 JP2012081386W WO2013136606A1 WO 2013136606 A1 WO2013136606 A1 WO 2013136606A1 JP 2012081386 W JP2012081386 W JP 2012081386W WO 2013136606 A1 WO2013136606 A1 WO 2013136606A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
primary
evaporator
refrigerant
generation system
Prior art date
Application number
PCT/JP2012/081386
Other languages
English (en)
Japanese (ja)
Inventor
洋志 東
南　健一
Original Assignee
ヤンマー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ヤンマー株式会社 filed Critical ヤンマー株式会社
Publication of WO2013136606A1 publication Critical patent/WO2013136606A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Definitions

  • the present invention relates to a steam generation system that generates steam using a first heat medium as a heat source.
  • Patent Document 1 discloses a steam generator 1 that generates steam by performing two-stage heat transfer via two heat pumps.
  • the steam generator 1 is a heat source fluid, for example, a first heat pump 2 that absorbs heat from hot water at 55 ° C. and dissipates heat to the intermediate fluid (water), and absorbs heat from the intermediate fluid, dissipates heat to 20 ° C. water and 120 ° C.
  • a second heat pump 3 that generates steam by heating up to.
  • the present invention provides a steam generation system capable of generating steam that meets the demand while suppressing the amount of heat received from the first heat medium to a small amount.
  • a steam generation system is a steam generation system that generates steam using a first heat medium as a heat source, and is a primary heat pump in which a primary refrigerant is circulated, and the first heat medium to the first heat pump.
  • a primary heat pump having a primary evaporator for transferring heat to a secondary refrigerant, and a secondary heat pump in which a secondary refrigerant circulates, wherein the heat is transferred from the primary refrigerant to the secondary refrigerant.
  • exhaust heat is supplied to the second heat medium.
  • the secondary heat pump is further provided with a second evaporator that moves the amount of heat from the second heat medium to the secondary refrigerant.
  • the first evaporator and the second evaporator are arranged in series.
  • the first evaporator and the second evaporator are arranged in parallel.
  • the primary heat pump includes a primary compressor that flows the primary refrigerant
  • the secondary heat pump includes a secondary compressor that flows the secondary refrigerant, and the engine. Drives the primary compressor and the secondary compressor.
  • the steam generation system can generate steam commensurate with the demand while suppressing the amount of heat received from the first heat medium to a small amount.
  • FIG. 1 is a diagram showing a configuration of a steam generation system.
  • the steam generation system includes a primary heat pump 1, a secondary heat pump 2, and an engine 3.
  • the steam generation system also includes a first hot water path 4, a second hot water path 5, a pump 6, a water supply path 7, and a steam output path 8.
  • the primary heat pump 1 includes a primary path 10, a primary compressor 11, a primary condenser and a primary evaporator 24, which is an evaporator of the secondary heat pump 2, a primary expansion valve 12, and a primary evaporator 13. It has.
  • the primary compressor 11 causes the primary refrigerant to flow along the primary path 10.
  • the flow direction D1 indicates the direction in which the primary refrigerant flows.
  • the primary refrigerant circulates through the primary path 10 and sequentially passes through the first evaporator 24, the primary expansion valve 12, the primary evaporator 13, and the primary compressor 11.
  • the secondary heat pump 2 includes a secondary path 20, a secondary compressor 21, a secondary condenser 22, a secondary expansion valve 23, a first evaporator 24, and a second evaporator 25.
  • the secondary compressor 21 causes the secondary refrigerant to flow along the secondary path 20.
  • a flow direction D2 indicates a direction in which the secondary refrigerant flows.
  • the secondary refrigerant circulates in the secondary path 20 and sequentially passes through the secondary condenser 22, the secondary expansion valve 23, the first evaporator 24, the second evaporator 25, and the secondary compressor 21.
  • the first hot water path 4 is provided so as to pass through the primary evaporator 13 of the primary heat pump 1.
  • the first warm water flows along the first warm water path 4.
  • the flow direction D4 indicates the direction in which the first hot water flows.
  • the first hot water is one of heat sources that generate steam.
  • the second hot water path 5 is provided so as to pass through the engine 3 and the second evaporator 25 of the secondary heat pump 2.
  • the pump 6 causes the second warm water to flow along the second warm water path 5.
  • a flow direction D5 indicates a direction in which the second hot water flows.
  • the second hot water circulates along the second hot water path 5 and sequentially passes through the engine 3 and the second evaporator 25.
  • the second hot water is cooling water for the engine 3 and is one of heat sources that generate steam.
  • the water supply path 7 is provided so as to pass through the secondary condenser 22 of the secondary heat pump 2.
  • the flow direction D7 indicates the direction in which water flows.
  • the steam output path 8 is a path on the outlet side of the water supply path 7 and is a path for supplying steam generated by the secondary condenser 22 to a steam utilization end (not shown).
  • the flow direction D8 indicates the direction in which the steam flows.
  • the steam generation system is installed in a factory, for example.
  • the steam generated by the steam generation system is used in this factory.
  • the first hot water is a heat medium (first heat medium) that conveys exhaust heat discharged from the drive source or heat source used in this factory.
  • the temperature of 1st warm water is 70 degreeC, for example.
  • the engine 3 may be one of the drive sources used in this factory.
  • the second hot water is the cooling water for the engine 3 and is a heat medium (second heat medium) that conveys the exhaust heat discharged from the engine 3.
  • the temperature of the second warm water is, for example, 96 ° C. That is, the temperature of the first warm water is lower than the temperature of the second warm water.
  • the steam generation system generates steam by evaporating water through the primary heat pump 1 and the secondary heat pump 2 using the first warm water and the second warm water as heat sources.
  • the primary refrigerant flows along the primary path 10
  • the secondary refrigerant flows along the secondary path 20
  • the first hot water flows along the first hot water path 4.
  • the second hot water is flowed along the second hot water path 5, and the water is flowed along the water supply path 7.
  • the primary evaporator 13 of the primary heat pump 1 moves the amount of heat from the first hot water in the first hot water path 4 to the primary refrigerant.
  • the primary refrigerant is vaporized and the temperature of the first hot water is lowered.
  • the amount of temperature decrease is, for example, about 5 ° C.
  • the first evaporator 24 of the secondary heat pump 2 moves the amount of heat from the primary refrigerant to the secondary refrigerant.
  • the first evaporator 24 functions as an evaporator in the secondary heat pump 2, but functions as a condenser in the primary heat pump 1.
  • the primary refrigerant is liquefied and the secondary refrigerant is vaporized.
  • the second evaporator 25 of the secondary heat pump 2 moves the amount of heat from the second hot water in the second hot water path 5 to the secondary refrigerant.
  • the secondary refrigerant is vaporized or superheated, and the temperature of the second hot water decreases.
  • the secondary condenser 22 of the secondary heat pump 2 moves the amount of heat from the secondary refrigerant to the water in the water supply path 7.
  • the secondary refrigerant is liquefied, water is evaporated, and steam is generated.
  • the temperature of the generated steam is, for example, about 130 ° C.
  • FIG. 2 is a diagram showing the configuration of the steam generation system.
  • the first evaporator 24 and the second evaporator 25 according to the second embodiment are arranged in parallel.
  • the secondary path 20 includes a first path 201 and a second path 202 between the secondary expansion valve 23 and the secondary compressor 21.
  • the first path 201 and the second path 202 are arranged in parallel.
  • the first path 201 and the second path 202 branch at the branch position 20a and merge at the merge position 20b.
  • the first evaporator 24 and the second evaporator 25 according to the first embodiment are arranged in series.
  • the operation of the steam generation system according to the second embodiment is substantially equal to the operation of the steam generation system according to the first embodiment.
  • Some secondary refrigerants receive heat from the first hot water via the primary refrigerant in the first evaporator 24, and the remaining secondary refrigerants receive heat from the second hot water in the second evaporator 25.
  • the secondary refrigerant merges downstream of the merge position 20b, and the degree of superheat of the secondary refrigerant is made uniform.
  • FIG. 3 is a diagram showing the configuration of the steam generation system.
  • the steam generation system according to the third embodiment includes a transmission mechanism 30 that transmits the output of the engine 3 to the primary compressor 11 and the secondary compressor 21.
  • the engine 3 according to the third embodiment drives the primary compressor 11 and the secondary compressor 21.
  • the drive source of the primary compressor 11 and the secondary compressor 21 is not limited to the engine 3 and may be a motor, for example.
  • the steam generation system includes the primary heat pump 1, the secondary heat pump 2, and the engine 3 that supplies exhaust heat to the second heat medium (second hot water).
  • the exhaust heat of the engine 3 is used as one of heat sources that generate steam.
  • the steam generation system according to the first to third embodiments can generate steam commensurate with the demand amount while suppressing the amount of heat received from the first heat medium (first hot water) to a small amount.
  • the first evaporator 24 and the second evaporator 25 are arranged in series.
  • the whole amount of the secondary refrigerant is heated by the first heat medium and the second heat medium (exhaust heat of the engine 3).
  • the first evaporator 24 and the second evaporator 25 are arranged in parallel.
  • Some of the secondary refrigerants are heated by the first heat medium, and the remaining secondary refrigerants are heated by the second heat medium (exhaust heat of the engine 3).
  • the engine 3 drives the primary compressor 11 and the secondary compressor 21.
  • the steam generation system according to the third embodiment can improve the energy efficiency required for generating steam as compared with the case where the exhaust heat of the drive source of the primary compressor 11 and the secondary compressor 21 is not used.
  • the cooling water of the engine 3 is used as the second heat medium, but the exhaust gas of the engine 3 may be used as the second heat medium.
  • the heat source of the second evaporator 25 not only exhaust heat of the engine 3 but also exhaust heat of a combustion facility or a chemical reaction facility may be used. In short, the exhaust heat that is higher than the heat source of the primary evaporator 13 may be used as the heat source of the second evaporator 25.
  • the primary evaporator 13, the first evaporator 24, the second evaporator 25, and the secondary condenser 22 are illustrated with a structure in which a high-temperature fluid and a low-temperature fluid face each other.
  • a parallel flow structure or other structures may be used.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

La présente invention se rapporte à un système de production de vapeur qui permet de produire la quantité de vapeur demandée tout en conservant la chaleur reçue depuis un premier agent chauffant à un niveau faible. Le système de production de vapeur produit de la vapeur à l'aide d'une première eau chaude en tant que source de chaleur et est doté des éléments suivants : une pompe à chaleur primaire (1) dans laquelle un fluide frigorigène primaire circule et qui est dotée d'un évaporateur primaire (13) qui transfère la chaleur depuis le premier agent chauffant vers un fluide frigorigène primaire ; une pompe à chaleur secondaire (2) dans laquelle un fluide frigorigène secondaire circule et qui est dotée d'un premier évaporateur (24) qui transfère la chaleur depuis le premier fluide frigorigène vers un second fluide frigorigène, et d'un condenseur secondaire (22) qui produit de la vapeur par le transfert de la chaleur depuis le fluide frigorigène secondaire. Le système de production de vapeur est caractérisé en ce qu'il possède un moteur (3) qui apporte la chaleur résiduelle à un second agent chauffant et en ce que la pompe à chaleur secondaire (2) est en outre dotée d'un second évaporateur (25) qui transfère la chaleur du second agent chauffant vers le second fluide frigorigène.
PCT/JP2012/081386 2012-03-15 2012-12-04 Système de production de vapeur WO2013136606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-059207 2012-03-15
JP2012059207A JP2013194926A (ja) 2012-03-15 2012-03-15 蒸気発生システム

Publications (1)

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WO2013136606A1 true WO2013136606A1 (fr) 2013-09-19

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015117492A1 (de) * 2015-10-14 2016-05-19 Mitsubishi Hitachi Power Systems Europe Gmbh Erzeugung von Prozessdampf mittels Hochtemperaturwärmepumpe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5954581B2 (ja) * 2012-09-24 2016-07-20 三浦工業株式会社 蒸気発生システム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61125547A (ja) * 1984-11-21 1986-06-13 株式会社東芝 ヒ−トポンプ式ボイラ装置
JPS62225860A (ja) * 1986-03-27 1987-10-03 三菱重工業株式会社 ヒ−トポンプ装置
JP2009074744A (ja) * 2007-09-21 2009-04-09 Shinwa Tekku Kk ガスヒートポンプコージェネレーション装置
JP2009115363A (ja) * 2007-11-06 2009-05-28 Tokyo Electric Power Co Inc:The 蒸気生成システム
JP2012002426A (ja) * 2010-06-16 2012-01-05 Denso Corp ヒートポンプサイクル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61125547A (ja) * 1984-11-21 1986-06-13 株式会社東芝 ヒ−トポンプ式ボイラ装置
JPS62225860A (ja) * 1986-03-27 1987-10-03 三菱重工業株式会社 ヒ−トポンプ装置
JP2009074744A (ja) * 2007-09-21 2009-04-09 Shinwa Tekku Kk ガスヒートポンプコージェネレーション装置
JP2009115363A (ja) * 2007-11-06 2009-05-28 Tokyo Electric Power Co Inc:The 蒸気生成システム
JP2012002426A (ja) * 2010-06-16 2012-01-05 Denso Corp ヒートポンプサイクル

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015117492A1 (de) * 2015-10-14 2016-05-19 Mitsubishi Hitachi Power Systems Europe Gmbh Erzeugung von Prozessdampf mittels Hochtemperaturwärmepumpe

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