WO2020250867A1 - Système de congélation, procédé de commande et programme - Google Patents

Système de congélation, procédé de commande et programme Download PDF

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Publication number
WO2020250867A1
WO2020250867A1 PCT/JP2020/022608 JP2020022608W WO2020250867A1 WO 2020250867 A1 WO2020250867 A1 WO 2020250867A1 JP 2020022608 W JP2020022608 W JP 2020022608W WO 2020250867 A1 WO2020250867 A1 WO 2020250867A1
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WIPO (PCT)
Prior art keywords
engine
water
air conditioner
temperature
hot water
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PCT/JP2020/022608
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English (en)
Japanese (ja)
Inventor
江口　富士雄
鈴木　博幸
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三菱重工エンジン＆ターボチャージャ株式会社
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Publication of WO2020250867A1 publication Critical patent/WO2020250867A1/fr

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]
    • 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

Definitions

  • the present invention relates to cogeneration systems, control methods and programs.
  • the present application claims priority with respect to Japanese Patent Application No. 2019-110271 filed in Japan on June 13, 2019, the contents of which are incorporated herein by reference.
  • Patent Document 1 describes, as a related technique, a technique for improving the rise time in a floor heating system.
  • An object of the present invention is to provide a cogeneration system, a control method and a program capable of solving the above problems.
  • the cogeneration system is based on the engine that generates power, the air conditioner, and the heat output from the engine before the air conditioner is started. It includes a water temperature adjusting device that changes the temperature, and a pipe that circulates the water that exchanges heat when the air conditioner is started and that is after the water temperature adjusting device changes the temperature.
  • the water temperature adjusting device is a heat exchanger that raises the temperature of the water based on the heat output from the engine. It may be provided.
  • the water temperature regulator lowers the temperature of the water based on the heat output from the engine. It may be equipped with an absorption chiller.
  • the cogeneration system in the second aspect includes a first control unit that controls the water temperature adjusting device, and the water temperature adjusting device receives heat output from the engine. Based on this, the absorption chiller for lowering the temperature of the water may be provided, and the first control unit may operate only one of the heat exchanger and the absorption chiller.
  • the cost when the engine generates electric power and supplies electric power may be provided with a second control unit that operates the engine at a determined time based on the cost of purchasing electric power from the outside without performing the power generation.
  • the control method is based on the temperature of the water based on the engine that generates power, the air exchanger, and the heat output from the engine before the air exchanger is started.
  • a cogeneration comprising a water temperature adjusting device for changing the temperature, and a pipe for circulating the water after the water temperature adjusting device changes the temperature, which is the water that exchanges heat when the air conditioner is started.
  • a control method by the system wherein the water temperature adjusting device raises the temperature of the water based on the heat output from the engine, and the heat is output from the engine. This includes operating only one of the heat exchanger and the absorption chiller when the absorption chiller for lowering the temperature of water is provided.
  • the control method is based on the temperature of water based on the engine that generates electricity, the air conditioner, and the heat output from the engine before the air conditioner is started.
  • a cogeneration system including a water temperature adjusting device for changing the temperature of the water, and a pipe for circulating the water after the water temperature adjusting device changes the temperature, which is the water that exchanges heat when the air conditioner is started.
  • a system-based control method in which the time is determined based on the cost when the engine generates power and supplies power, and the cost when the engine purchases power from the outside without generating power. Including operating the engine.
  • the program determines the temperature of the water based on the engine producing the power, the air exchanger, and the heat output from the engine before the air exchanger is started.
  • a cogeneration system including a water temperature adjusting device for changing the water and a pipe for circulating the water after the water temperature adjusting device changes the temperature, which is the water that exchanges heat when the air conditioner is started.
  • the water temperature regulator is equipped with a heat exchanger that raises the temperature of the water based on the heat output from the engine, and the temperature of the water based on the heat output from the engine.
  • the program determines the temperature of water based on the engine that generates electricity, the air conditioner, and the heat output from the engine before the air conditioner is started.
  • a cogeneration system including a water temperature adjusting device for changing the water temperature, and a pipe for circulating the water which is heat exchanged when the air conditioner is started and the water is circulated after the water temperature adjusting device changes the temperature.
  • the engine at a time determined based on the cost when the engine generates electric power and supplies electric power to the computer provided with the computer and the cost when the engine purchases electric power from the outside without generating electric power. To operate, to execute.
  • the heat released from the engine can be effectively used.
  • the cogeneration system 1 includes a gas engine 10 (an example of an engine), an exhaust gas boiler 20, a high-pressure steam header 30, a steam heat exchanger 40 (an example of a water temperature regulator), and a hot water heat exchanger 50 (an example of a water temperature regulator).
  • a gas engine 10 an example of an engine
  • an exhaust gas boiler 20 a high-pressure steam header 30, a steam heat exchanger 40 (an example of a water temperature regulator), and a hot water heat exchanger 50 (an example of a water temperature regulator).
  • An example of a water temperature adjusting device cold / hot water headers 60 and 70, cold / hot water pumps 80 and 90, an air conditioner pipe 100, an air conditioner 110, and a control device 120 are provided.
  • the cogeneration system 1 is a system used in an assembly plant.
  • the cogeneration system 1 uses the gas engine 10 to generate electricity for use in the assembly plant, and heat of exhaust gas (an example of heat output from the engine) and heat of hot water discharged from the gas engine 10 during power generation.
  • heat of exhaust gas an example of heat output from the engine
  • heat of hot water discharged from the gas engine 10 during power generation.
  • the cogeneration system 1 is a system capable of increasing the operating efficiency of the air conditioner 110 by utilizing the exhaust gas discharged from the gas engine 10.
  • the cogeneration system 1 uses the exhaust gas discharged from the gas engine 10 to increase the operating efficiency of the air conditioner 110 during the heating operation.
  • the cogeneration system 1 will be described as being used in an assembly factory.
  • the assembly factory is an example in which the cogeneration system 1 is provided, and the place where the cogeneration system 1 is provided is not limited to the assembly factory.
  • the gas engine 10 is an engine that generates electricity under the control of the control device 120.
  • the gas engine 10 outputs the generated electric power to a place where electric power is required in the assembly factory. Further, the gas engine 10 outputs the exhaust gas generated when power is generated to the exhaust gas boiler 20. Further, the cooling water for cooling the gas engine 10 is heated by the heat generated during power generation to become hot water. This hot water is supplied to the hot water heat exchanger 50.
  • the exhaust gas boiler 20 is a boiler that generates high-pressure steam by utilizing the heat of the exhaust gas.
  • the exhaust gas boiler 20 receives exhaust gas from the gas engine 10.
  • the exhaust gas boiler 20 generates high-pressure steam by evaporating water with the heat of the received exhaust gas.
  • the exhaust gas boiler 20 outputs the generated high-pressure steam to the high-pressure steam header 30.
  • the high pressure steam header 30 is a device that collects high pressure steam.
  • the high-pressure steam header 30 divides the collected high-pressure steam into water and steam and distributes them to each device to be connected.
  • the high-pressure steam header 30 collects the high-pressure steam output by the exhaust gas boiler 20.
  • the high-pressure steam header 30 divides the collected high-pressure steam into water and steam, and supplies the steam to the steam heat exchanger 40.
  • the steam heat exchanger 40 heats the hot water output from the cold / hot water header 70 by using the heat of the steam supplied from the high pressure steam header 30.
  • the hot water after heating heated by the steam heat exchanger 40 is output to the cold / hot water header 60.
  • the hot water heat exchanger 50 heats the hot water output from the cold / hot water header 70 by using the heat of the hot water supplied from the gas engine 10.
  • the heated hot water heated by the hot water heat exchanger 50 is output to the cold / hot water header 60.
  • the cold / hot water header 60 collects hot water.
  • the cold / hot water header 70 collects hot water before starting the air conditioner 110. Further, the cold / hot water header 70 collects cold water after the air conditioner 110 is started.
  • the cold / hot water pump 80 supplies the hot water collected by the cold / hot water header 60 to the cold / hot water pump 90 and the air conditioner 110 via the air conditioner pipe 100.
  • the cold / hot water pump 90 Before starting the air conditioner 110, the cold / hot water pump 90 supplies hot water that is not heat exchanged in the air conditioner 110 to the cold / hot water header 70. After the air conditioner 110 is started, the cold / hot water pump 90 supplies the cold water cooled by heat exchange in the air conditioner 110 to the cold / hot water header 70.
  • the air conditioner pipe 100 is a pipe that circulates water for heat exchange in the air conditioner 110.
  • the air conditioner 110 is a device that performs a heating operation or a cooling operation by exchanging heat with water in the air conditioner pipe 100 after starting.
  • the air conditioner 110 according to the first embodiment of the present invention is heated by exchanging heat with hot water in the air conditioner pipe 100 after startup, for example, when operating in a cold time such as winter in the northern hemisphere. It is a device with a high possibility.
  • the air conditioner 110 is installed in an assembly plant.
  • the control device 120 includes a storage unit 1201 and an engine control unit 1202 (an example of a second control unit).
  • the storage unit 1201 stores various information necessary for the processing performed by the control device 120. For example, as shown in FIG. 3, the storage unit 1201 has the weather conditions for each date indicated by the past weather data and the amount of power generated for each predetermined time (for example, every hour) actually generated under the weather conditions. Stores the data table TBL1 associated with.
  • the engine control unit 1202 determines a target power generation amount indicating a target power generation amount on the day when the gas engine 10 is controlled (that is, predicts a demand power amount). For example, the engine control unit 1202 acquires the weather forecast of the day when the gas engine 10 is controlled before the day when the gas engine 10 is controlled. The engine control unit 1202 identifies the weather condition closest to the weather condition indicated by the acquired weather forecast. Meteorological conditions include temperature. The engine control unit 1202 determines the amount of power generated for each predetermined time associated with the weather conditions specified in the data table TBL1 as the target amount of power generated on the day when the gas engine 10 is controlled. The engine control unit 1202 may correct the target power generation amount.
  • the engine control unit 1202 determines the difference between the fuel consumption of the past device that uses electricity in the assembly plant and the fuel consumption of the current device, the difference between the number of past devices and the current number of devices, and the past of the gas engine 10.
  • the target power generation amount may be corrected in consideration of the difference between the performance of the engine and the current performance.
  • the engine control unit 1202 determines the amount of power generated at night based on the determined target amount of power generated. For example, as shown in FIG. 4, the engine control unit 1202 generates electric power at night when a part of the electric energy required in the daytime (for example, the electric energy required during the peak power period) is generated at night. For the cost increase when power is purchased and for the case where the air conditioner is started without storing heat at night when the air conditioner is started after generating electricity at night and storing heat in the air conditioner pipe 100. The cost reduction due to the efficiency improvement of the air conditioner is calculated for various power generation amounts at night. Then, the engine control unit 1202 controls the gas engine 10 to realize the amount of generated power that can be most expected to reduce the cost of generating power at night.
  • a part of the electric energy required in the daytime for example, the electric energy required during the peak power period
  • the engine control unit 1202 determines a target power generation amount indicating a target power generation amount on the day when the gas engine 10 is controlled (that is, predicts a demand power amount) (step S1). Specifically, the engine control unit 1202 acquires the weather forecast of the day when the gas engine 10 is controlled before the day when the gas engine 10 is controlled. The engine control unit 1202 identifies the weather condition closest to the weather condition indicated by the acquired weather forecast. Meteorological conditions include temperature. The engine control unit 1202 determines the amount of power generated for each predetermined time associated with the weather conditions specified in the data table TBL1 as the target amount of power generated on the day when the gas engine 10 is controlled.
  • the engine control unit 1202 determines the amount of power generated at night based on the determined target amount of power generated (step S2). Specifically, as shown in FIG. 4, the engine control unit 1202 generates power at night when a part of the electric energy required during the daytime (for example, the electric energy required during the peak power period) is generated at nighttime.
  • the cost increase compared to the case of purchasing electric power, and the air conditioner is started without storing heat at night when the air conditioner is started after generating electricity at night and storing heat in the air conditioner pipe 100.
  • the cost reduction due to the efficiency improvement of the air conditioner is calculated for various power generation amounts at night.
  • the engine control unit 1202 controls the gas engine 10 to realize the amount of generated power that can be most expected to reduce the cost of generating power at night.
  • the gas engine 10 generates electricity under the control of the control device 120 (step S3).
  • the gas engine 10 outputs the generated electric power to a place where electric power is required in the assembly factory. Further, the gas engine 10 outputs the exhaust gas generated when power is generated to the exhaust gas boiler 20. Further, the gas engine 10 heats the cooling water by the heat generated during power generation (step S4). This hot water is supplied to the hot water heat exchanger 50.
  • the exhaust gas boiler 20 uses the heat of the exhaust gas to generate high-pressure steam (step S5). Specifically, the exhaust gas boiler 20 receives exhaust gas from the gas engine 10. The exhaust gas boiler 20 generates high-pressure steam by evaporating water with the heat of the received exhaust gas. The exhaust gas boiler 20 outputs the generated high-pressure steam to the high-pressure steam header 30.
  • the high pressure steam header 30 is a device that collects high pressure steam.
  • the high-pressure steam header 30 divides the collected high-pressure steam into water and steam and distributes them to each device to be connected. Specifically, the high-pressure steam header 30 collects the high-pressure steam output by the exhaust gas boiler 20.
  • the high-pressure steam header 30 divides the collected high-pressure steam into water and steam, and supplies the steam to the steam heat exchanger 40.
  • the steam heat exchanger 40 uses the heat of the steam supplied from the high-pressure steam header 30 to heat the hot water output from the cold / hot water header 70 (step S6).
  • the hot water after heating heated by the steam heat exchanger 40 is output to the cold / hot water header 60.
  • the hot water heat exchanger 50 heats the hot water output from the cold / hot water header 70 by using the heat of the hot water supplied from the gas engine 10 (step S7).
  • the heated hot water heated by the hot water heat exchanger 50 is output to the cold / hot water header 60.
  • the cold / hot water header 60 collects hot water.
  • the cold / hot water header 60 supplies hot water to the cold / hot water pump 80.
  • the cold / hot water pump 80 supplies the hot water collected by the cold / hot water header 60 to the cold / hot water pump 90 and the air conditioner 110 via the air conditioner pipe 100.
  • the cold / hot water pump 90 supplies hot water that is not heat exchanged in the air conditioner 110 to the cold / hot water header 70.
  • the cold / hot water header 70 collects hot water.
  • the cold / hot water header 70 outputs hot water to the steam heat exchanger 40 and the hot water heat exchanger 50.
  • the air conditioner 110 is started in the heating operation in a state where hot water circulates in the air conditioner pipe 100 (step S8).
  • the air conditioner 110 exchanges heat with the hot water circulating in the air conditioner pipe 100 (step S9).
  • the air conditioner 110 can output air having a temperature close to a desired temperature set immediately after startup.
  • the heat exchange by the air conditioner 110 lowers the temperature of the hot water circulating in the air conditioner pipe 100. This hot water is supplied to the cold / hot water pump 90.
  • the cold / hot water pump 90 supplies the hot water that has been heat-exchanged and cooled in the air conditioner 110 to the cold / hot water header 70.
  • the cold / hot water header 70 collects hot water.
  • the cold / hot water header 70 outputs hot water to the steam heat exchanger 40 and the hot water heat exchanger 50.
  • the steam heat exchanger 40 and the hot water heat exchanger 50 heat hot water (step S10).
  • the hot water after heating is output to the cold / hot water header 60.
  • the cold / hot water header 60 collects hot water.
  • the cold / hot water header 60 supplies hot water to the cold / hot water pump 80.
  • the cold / hot water pump 80 supplies the hot water collected by the cold / hot water header 60 to the cold / hot water pump 90 and the air conditioner 110 via the air conditioner pipe 100. Then, the cogeneration system 1 repeats the processes of steps S9 to S10.
  • the cogeneration system 1 is a steam heat that changes the temperature of water based on the heat output from the gas engine 10 before the gas engine 10, the air harmonicer 110, and the air harmonizer 110 that generate power are started.
  • a pipe 100 for an air conditioner that circulates the water after the heat exchanger 50 changes the temperature is provided.
  • the cogeneration system 1 includes a gas engine 10 (an example of an engine), an exhaust gas boiler 20, a high-pressure steam header 30, cold / hot water headers 60 and 70, cold / hot water pumps 80 and 90, and piping for an air conditioner. It includes 100, an air conditioner 110, a control device 120, and an absorption chiller 130 (an example of a water temperature adjusting device).
  • the cogeneration system 1 is a system used in an assembly plant.
  • the cogeneration system 1 uses the gas engine 10 to generate electricity for use in the assembly plant, and heat of exhaust gas (an example of heat output from the engine) and heat of hot water discharged from the gas engine 10 during power generation.
  • heat of exhaust gas an example of heat output from the engine
  • heat of hot water discharged from the gas engine 10 during power generation.
  • the cogeneration system 1 is a system capable of increasing the operating efficiency of the air conditioner 110 by utilizing the exhaust gas discharged from the gas engine 10.
  • the cogeneration system 1 uses the exhaust gas discharged from the gas engine 10 to increase the operating efficiency of the air conditioner 110 during the cooling operation.
  • the cogeneration system 1 will be described as being used in an assembly factory.
  • the assembly factory is an example in which the cogeneration system 1 is provided, and the place where the cogeneration system 1 is provided is not limited to the assembly factory.
  • the same description as in the first embodiment of the present invention may be omitted.
  • the gas engine 10 is an engine that generates electricity under the control of the control device 120.
  • the gas engine 10 outputs the generated electric power to a place where electric power is required in the assembly factory. Further, the gas engine 10 outputs the exhaust gas generated when power is generated to the exhaust gas boiler 20. Further, the cooling water for cooling the gas engine 10 is heated by the heat generated during power generation to become hot water. This hot water is supplied to the absorption chiller 130.
  • the exhaust gas boiler 20 is a boiler that generates high-pressure steam by utilizing the heat of the exhaust gas.
  • the exhaust gas boiler 20 outputs the generated high-pressure steam to the absorption chiller 130.
  • the high pressure steam header 30 is a device that collects high pressure steam.
  • the high-pressure steam header 30 divides the collected high-pressure steam into water and steam and distributes them to each device to be connected.
  • the high-pressure steam header 30 collects the high-pressure steam output by the exhaust gas boiler 20.
  • the high-pressure steam header 30 separates the collected high-pressure steam into water and steam, and supplies the steam to the absorption chiller 130.
  • the absorption chiller 130 is a device that generates cold water using at least one of hot water supplied from the gas engine 10 and steam supplied from the high-pressure steam header 30.
  • the absorption chiller 130 is a non-patent document (written by Shoji Ohama, "Completely Illustrated Basic Knowledge of Air Conditioning / Supply / Drainage Sanitary Equipment", 1st Edition, Ohm Co., Ltd., October 25, 2014, P.43. ), Etc. are absorption chillers.
  • the absorption chiller 130 creates a temperature lower than normal temperature by repeating a series of operations called "absorption chilling cycle" to realize a cooling action.
  • the cooled cold water cooled by the absorption chiller 130 is output to the cold / hot water header 60.
  • the cold / hot water header 60 collects cold water.
  • the cold / hot water header 70 collects cold water before starting the air conditioner 110. Further, the cold / hot water header 70 collects hot water after the air conditioner 110 is started.
  • the cold / hot water pump 80 supplies the cold water collected by the cold / hot water header 60 to the cold / hot water pump 90 and the air conditioner 110 via the air conditioner pipe 100.
  • the cold / hot water pump 90 supplies the cold / hot water header 70 with cold water that is not heat-exchanged in the air conditioner 110 before the air conditioner 110 is started. After the air conditioner 110 is started, the cold / hot water pump 90 supplies the hot water that has been heat-exchanged and heated in the air conditioner 110 to the cold / hot water header 70.
  • the air conditioner pipe 100 is a pipe that circulates water for heat exchange in the air conditioner 110.
  • the air conditioner 110 is a device that performs a heating operation or a cooling operation by exchanging heat with water in the air conditioner pipe 100 after starting.
  • the air conditioner 110 according to the second embodiment of the present invention is operated for cooling by exchanging heat with cold water in the air conditioner pipe 100 after startup, for example, when operating in a hot time such as summer in the northern hemisphere. It is a device with a high possibility.
  • the air conditioner 110 is installed in an assembly plant.
  • the control device 120 includes a storage unit 1201 and an engine control unit 1202 (an example of a second control unit).
  • the storage unit 1201 stores various information necessary for the processing performed by the control device 120. For example, as shown in FIG. 3, the storage unit 1201 has the weather conditions for each date indicated by the past weather data and the amount of power generated for each predetermined time (for example, every hour) actually generated under the weather conditions. Stores the data table TBL1 associated with.
  • the engine control unit 1202 determines the target power generation amount indicating the target power generation amount on the day when the gas engine 10 is controlled (that is, predicts the demand power amount).
  • the engine control unit 1202 determines the amount of power generated at night based on the determined target amount of power generated.
  • the engine control unit 1202 determines the target power generation amount indicating the target power generation amount on the day when the gas engine 10 is controlled (that is, predicts the demand power amount) (step S1).
  • the engine control unit 1202 determines the amount of power generated at night based on the determined target amount of power generated (step S2).
  • the gas engine 10 generates electricity under the control of the control device 120 (step S3).
  • the gas engine 10 outputs the generated electric power to a place where electric power is required in the assembly factory. Further, the gas engine 10 outputs the exhaust gas generated when power is generated to the exhaust gas boiler 20. Further, the gas engine 10 heats the cooling water by the heat generated during power generation (step S4). This hot water is supplied to the absorption chiller 130.
  • the exhaust gas boiler 20 uses the heat of the exhaust gas to generate high-pressure steam (step S5).
  • the exhaust gas boiler 20 outputs the generated high-pressure steam to the high-pressure steam header 30.
  • the high pressure steam header 30 is a device that collects high pressure steam.
  • the high-pressure steam header 30 divides the collected high-pressure steam into water and steam and distributes them to each device to be connected. Specifically, the high-pressure steam header 30 collects the high-pressure steam output by the exhaust gas boiler 20.
  • the high-pressure steam header 30 separates the collected high-pressure steam into water and steam, and supplies the steam to the absorption chiller 130.
  • the absorption chiller 130 uses hot water supplied from the gas engine 10 and steam supplied from the high-pressure steam header 30 to generate cold water (step S21).
  • the cold water generated by the absorption chiller 130 is output to the cold / hot water header 60.
  • the cold / hot water header 60 collects cold water.
  • the cold / hot water header 60 supplies cold water to the cold / hot water pump 80.
  • the cold / hot water pump 80 supplies the cold water collected by the cold / hot water header 60 to the cold / hot water pump 90 and the air conditioner 110 via the air conditioner pipe 100.
  • the cold / hot water pump 90 supplies the cold / hot water header 70 with cold water that is not heat-exchanged in the air conditioner 110 before the air conditioner 110 is started.
  • the cold / hot water header 70 collects cold water.
  • the cold / hot water header 70 outputs cold water to the absorption chiller 130.
  • the air conditioner 110 is started in a cooling operation in a state where cold water circulates in the air conditioner pipe 100 (step S22).
  • the air conditioner 110 exchanges heat with the cold water circulating in the air conditioner pipe 100 (step S23).
  • the air conditioner 110 can output air having a temperature close to a desired temperature set immediately after startup.
  • the heat exchange by the air conditioner 110 raises the temperature of the cold water circulating in the air conditioner pipe 100. This cold water is supplied to the cold / hot water pump 90.
  • the cold / hot water pump 90 supplies the cold water heated by heat exchange in the air conditioner 110 to the cold / hot water header 70.
  • the cold / hot water header 70 collects cold water.
  • the cold / hot water header 70 outputs cold water to the absorption chiller 130.
  • the absorption chiller 130 cools the cold water (step S24).
  • the cooled cold water is output to the cold / hot water header 60.
  • the cold / hot water header 60 collects cold water.
  • the cold / hot water header 60 supplies cold water to the cold / hot water pump 80.
  • the cold / hot water pump 80 supplies the cold water collected by the cold / hot water header 60 to the cold / hot water pump 90 and the air conditioner 110 via the air conditioner pipe 100. Then, the cogeneration system 1 repeats the processes of steps S23 to S24.
  • the cogeneration system 1 is an absorption type that changes the temperature of water based on the heat output from the gas engine 10, the air conditioner 110, and the air conditioner 110 that generate power before the gas engine 10 is started. Air harmony that circulates the water that exchanges heat when the refrigerator 130 (an example of a water temperature adjusting device) and the air conditioner 110 are started, and the water after the absorption chiller 130 changes the temperature. It is provided with a machine pipe 100.
  • the cogeneration system 1 utilizes the heat of the exhaust gas discharged when the gas engine 10 generates electricity to increase the operating efficiency of the air conditioner 110. That is, the heat released from the engine can be effectively used.
  • the cogeneration system 1 includes a gas engine 10 (an example of an engine), an exhaust gas boiler 20, a high-pressure steam header 30, a steam heat exchanger 40 (an example of a water temperature regulator), and a hot water heat exchanger 50 (an example of a water temperature regulator).
  • a gas engine 10 an example of an engine
  • an exhaust gas boiler 20 a high-pressure steam header 30, a steam heat exchanger 40 (an example of a water temperature regulator), and a hot water heat exchanger 50 (an example of a water temperature regulator).
  • a steam heat exchanger 40 an example of a water temperature regulator
  • a hot water heat exchanger 50 an example of a water temperature regulator
  • piping for air conditioner 100, air conditioner 110, control device 120, absorption chiller 130 (example of water temperature adjusting device), It includes switching devices 140 and 150.
  • the cogeneration system 1 combines the cogeneration system 1 according to the first embodiment of the present invention and the cogeneration system 1 according to the second embodiment of the present invention, and further, the switching device 140, It is a cogeneration system with 150 added.
  • the cogeneration system 1 is a system used in an assembly plant.
  • the cogeneration system 1 uses the gas engine 10 to generate electricity for use in the assembly plant, and heat of exhaust gas (an example of heat output from the engine) and heat of hot water discharged from the gas engine 10 during power generation.
  • heat of exhaust gas an example of heat output from the engine
  • heat of hot water discharged from the gas engine 10 during power generation.
  • air conditioner 110 Before starting the air conditioner 110 in the assembly plant using at least one of (an example of heat output from the engine), air at a temperature corresponding to the operation when the air conditioner 110 is started.
  • the cogeneration system 1 is a system capable of increasing the operating efficiency of the air conditioner 110 by utilizing the exhaust gas discharged from the gas engine 10.
  • the cogeneration system 1 utilizes the exhaust gas discharged from the gas engine 10 to achieve both the operating efficiency of the air conditioner 110 during the heating operation and the operating efficiency during the cooling operation. Raise.
  • the same description as in the first embodiment of the present invention or the second embodiment of the present invention may be omitted.
  • the switching device 140 is provided at a position where the pipe between the gas engine 10 and the absorption chiller 130 and the pipe between the gas engine 10 and the hot water heat exchanger 50 intersect.
  • the switching device 140 enables one of the path from the gas engine 10 to the absorption chiller 130 and the path from the gas engine 10 to the hot water heat exchanger 50 under the control of the control device 120, and switches the other. It is a device to disable.
  • the switching device 150 is provided at a position where the pipe between the high-pressure steam header 30 and the absorption chiller 130 and the pipe between the high-pressure steam header 30 and the steam heat exchanger 40 intersect. Under the control of the control device 120, the switching device 150 enables one of the path from the high pressure steam header 30 to the absorption chiller 130 and the path from the high pressure steam header 30 to the steam heat exchanger 40. It is a device that invalidates the other.
  • the control device 120 includes a storage unit 1201, an engine control unit 1202 (an example of a second control unit), and a switching device control unit 1203 (an example of a first control unit).
  • the switching device control unit 1203 controls the switching device 140 and the switching device 150.
  • the switching device control unit 1203 determines that there is a high possibility of heating operation by exchanging heat with hot water in the air conditioner piping 100 after starting, the gas engine 10 is transferred to the absorption chiller 130.
  • the switching device 140 is controlled so that the route becomes invalid and the route from the gas engine 10 to the hot water heat exchanger 50 becomes valid.
  • the switching device control unit 1203 determines that there is a high possibility of heating operation by exchanging heat with hot water in the air conditioner pipe 100 after activation, the high-pressure steam header 30 is transferred to the absorption chiller 130.
  • the switching device 150 is controlled so that the path from the high pressure steam header 30 to the steam heat exchanger 40 becomes valid.
  • the switching device control unit 1203 determines that there is a high possibility of cooling operation by exchanging heat with the cold water in the air conditioner pipe 100 after starting, the absorption chiller 130 from the gas engine 10
  • the switching device 140 is controlled so that the route to the gas engine 10 becomes valid and the route from the gas engine 10 to the hot water heat exchanger 50 becomes invalid.
  • the switching device control unit 1203 determines that there is a high possibility of cooling operation by exchanging heat with the cold water in the air conditioner pipe 100 after starting, the high pressure steam header 30 is transferred to the absorption chiller 130.
  • the switching device 150 is controlled so that the path of the above is valid and the path from the high pressure steam header 30 to the steam heat exchanger 40 is invalid.
  • the switching device control unit 1203 determines that there is a high possibility of heating operation by exchanging heat with hot water in the air conditioner piping 100 after activation, the cogeneration system 1 is shown in FIG. The processing described in the first embodiment of the present invention shown is performed. Further, when the switching device control unit 1203 determines that there is a high possibility of cooling operation by exchanging heat with the cold water in the air conditioner piping 100 after the start-up, the second aspect of the present invention shown in FIG. The process described in the embodiment is performed. After startup, there is a high possibility of heating operation by exchanging heat with hot water in the air conditioner pipe 100, or after startup, there is a possibility of cooling operation by exchanging heat with cold water in air conditioner pipe 100.
  • the determination made by the switching device control unit 1203 as to whether or not the air conditioner is high corresponds to, for example, a cold time in which one year is registered in advance for a cold time and a hot time, and the time when the air conditioner 110 is actually operated is registered. It may be done by determining whether it corresponds to a hot season.
  • the cogeneration system 1 is a steam heat that changes the temperature of water based on the heat output from the gas engine 10 before the gas engine 10, the air harmonizer 110, and the air harmonizer 110 that generate power are started.
  • Air conditioner pipe 100 that circulates the water after at least one of the steam heat exchanger 40, the hot water heat exchanger 50, and the absorption chiller 130 has changed the temperature. And.
  • the cogeneration system 1 utilizes the heat of the exhaust gas discharged when the gas engine 10 generates electricity to increase the operating efficiency of the air conditioner 110. That is, the heat released from the engine can be effectively used.
  • the order of the processing may be changed as long as the appropriate processing is performed.
  • the storage unit 1201 and other storage devices (including registers and latches) in each embodiment of the present invention may be provided anywhere within a range in which appropriate information is transmitted and received. Further, each of the storage unit 1201 and other storage devices may exist in a plurality of areas within a range in which appropriate information is transmitted and received, and the data may be distributed and stored.
  • FIG. 10 is a schematic block diagram showing the configuration of a computer according to at least one embodiment.
  • the computer 5 includes a CPU 6, a main memory 7, a storage 8, and an interface 9.
  • each of the above-mentioned control device 120, engine control unit 1202, switching device control unit 1203, and other control devices is mounted on the computer 5.
  • the operation of each processing unit described above is stored in the storage 8 in the form of a program.
  • the CPU 6 reads a program from the storage 8, expands it into the main memory 7, and executes the above processing according to the program. Further, the CPU 6 secures a storage area corresponding to each of the above-mentioned storage units in the main memory 7 according to the program.
  • Examples of the storage 8 include HDD (Hard Disk Drive), SSD (Solid State Drive), magnetic disk, magneto-optical disk, CD-ROM (Compact Disc Read Only Memory), DVD-ROM (Digital Versatile Memory). , Semiconductor memory and the like.
  • the storage 8 may be internal media directly connected to the bus of computer 5, or external media connected to computer 5 via an interface 9 or a communication line. When this program is distributed to the computer 5 via a communication line, the distributed computer 5 may expand the program to the main memory 7 and execute the above processing.
  • the storage 8 is a non-temporary tangible storage medium.
  • the above program may realize a part of the above-mentioned functions.
  • the program may be a file that can realize the above-mentioned functions in combination with a program already recorded in the computer system, that is, a so-called difference file (difference program).
  • the computer 5 includes a custom LSI (Programmable Logic Device) or the like, an ASIC (Application Specific Integrated Circuit), an ASIC (Application Special Integrated Circuit), and an ASIC (Programmable Logical Device). And similar processing devices may be provided.
  • PLDs include PAL (Programmable Array Logic), GAL (Generic Array Logic), CPLD (Complex Programmable Logic Device), and FPGA (Field Programmable Gate Array).
  • PAL Programmable Array Logic
  • GAL Generic Array Logic
  • CPLD Complex Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • the heat released from the engine can be effectively used.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Control Of Eletrric Generators (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Ce système de cogénération comprend : un moteur pour générer de l'énergie; un climatiseur; un conditionneur de température d'eau pour modifier la température de l'eau sur la base de la chaleur déchargée du moteur avant l'activation du climatiseur; et une tuyauterie permettant la circulation à travers celle-ci d'eau qui est destinée à un échange de chaleur lors de l'activation du climatiseur et qui est obtenue après avoir subi un changement de température par le conditionneur de température d'eau.
PCT/JP2020/022608 2019-06-13 2020-06-09 Système de congélation, procédé de commande et programme WO2020250867A1 (fr)

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JP2019110271A JP2020201019A (ja) 2019-06-13 2019-06-13 コジェネレーションシステム、制御方法及びプログラム
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000073862A (ja) * 1998-08-28 2000-03-07 Tadahiro Omi エネルギ供給装置およびエネルギ供給システム
JP2001032716A (ja) * 1999-07-22 2001-02-06 Sanyo Electric Co Ltd ガスエンジン冷却装置
JP2002235968A (ja) * 2001-02-09 2002-08-23 Sanyo Electric Co Ltd 空気調和装置
JP2003121025A (ja) * 2001-10-10 2003-04-23 Tokyo Gas Co Ltd 複合冷暖房装置
JP2004257677A (ja) * 2003-02-27 2004-09-16 Sanken Setsubi Kogyo Co Ltd 複合熱源システムと空調システムの連系システム
JP2006046755A (ja) * 2004-08-03 2006-02-16 Sanyo Electric Co Ltd 空気調和装置
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