US20070018009A1 - Cogeneration system and method for controlling the same - Google Patents

Cogeneration system and method for controlling the same Download PDF

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Publication number
US20070018009A1
US20070018009A1 US11/456,228 US45622806A US2007018009A1 US 20070018009 A1 US20070018009 A1 US 20070018009A1 US 45622806 A US45622806 A US 45622806A US 2007018009 A1 US2007018009 A1 US 2007018009A1
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United States
Prior art keywords
cogeneration
air conditioner
cogeneration device
electricity
operation signals
Prior art date
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Abandoned
Application number
US11/456,228
Inventor
Chang Min Choi
Yeong Seop Choe
Won Jae Choi
Jae Won Lee
Baik Young Chung
Se Dong Chang
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LG Electronics Inc
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LG Electronics Inc
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Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, SE DONG, CHOE, YEONG SEOP, CHOI, CHANG MIN, CHOI, WON JAE, CHUNG, BAIK YOUNG, LEE, JAE WON
Publication of US20070018009A1 publication Critical patent/US20070018009A1/en
Abandoned legal-status Critical Current

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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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F25B2600/00—Control issues
    • F25B2600/07—Remote controls
    • 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
    • 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 disclosure relates to subject mater contained in priority Korean Application No. 10-2005-0061798, filed on Jul. 8, 2005, which is herein expressly incorporated by reference in its entirety.
  • the present invention relates to a cogeneration system, and more particularly to, a cogeneration system, which operates an engine and a generator according to operation signals from an air conditioner, and which uses electricity produced by the generator and waste heat recovered by the engine for the air conditioner, thereby improving the efficiency of the system, and a method for controlling the same.
  • a cogeneration system is a system that can produce both electricity and heat from a single energy source.
  • the electricity produced by the cogeneration system is supplied for use to electrical household appliances, such as various kinds of household lighting equipment, heat pump type air conditioners, and so on, and the heat source produced by the cogeneration system is used for hot water supply, warm water or the like.
  • FIG. 1 is a block diagram schematically showing a cogeneration system in accordance with the prior art.
  • the cogeneration system in accordance with the prior art includes, as shown in FIG. 1 , a generator 1 for producing electricity, an engine 4 for driving the generator 1 , an air conditioner 6 driven by the electricity produced by the generator 2 , waste heat recovery equipment 8 for recovering waste heat generated by the engine 4 , and a heat demanding site 10 , such as a heat storage tank, where waste heat is used.
  • the generator 2 and the air conditioner 6 are connected to a power line for supplying electricity.
  • the generator 2 when the engine 4 is operated, the generator 2 produces electricity by the driving force of the engine 4 .
  • the electricity produced by the generator 2 is supplied to the air conditioner 6 via the power line 12 , to thus operate the air conditioner 6 .
  • the waste heat generated by the engine 4 is recovered by the waste heat recovery equipment 8 , and used in the heat demanding site 10 .
  • the generator 2 is also stopped, to thus stop the power supply to the air conditioner 6 from the generator 2 .
  • the cogeneration system in accordance with the prior art has a problem in that only the electricity produced by the generator 2 is supplied to the air conditioner 6 , and the waste heat recovered by the engine 4 is only utilized for hot water supply, warm water, or the like in the heat demanding site, so that it is impossible to maximize the efficiency of the system.
  • the present invention has been made in an effort to solve the above prior art problem, and provide a cogeneration system, which can improve the efficiency of the system by supplying waste heat recovered from a driving source to a compressor suction side of an air conditioner, and which can remotely control the operations of an engine and a generator according to an operating state of the air conditioner, and a method for controlling the same.
  • a cogeneration system including: a cogeneration device for supplying at least one of electricity and heat to an air conditioner; and a cogeneration device controller for controlling the operation of the cogeneration device according to operation signals from the air conditioner.
  • the cogeneration device controller is supplied with electricity from an external power source,
  • the cogeneration system further includes an air conditioner controller supplied with electricity from an en external power source, for controlling the air conditioner.
  • the air conditioner includes an indoor unit supplied with electricity from an external power source and an outdoor unit supplied with electricity from the generator, and the cogeneration device controller controls the operation of the cogeneration device according to operation signals from the indoor unit.
  • the air conditioner includes an indoor unit supplied with electricity from an external power source, an outdoor unit supplied with electricity from the generator, and a remote control for wirelessly operating the indoor unit, and the cogeneration device controller controls the operation of the cogeneration device according to operation signals from the indoor unit.
  • the cogeneration device includes a generator for generating electricity and a driving source for driving the generator and generating heat.
  • the cogeneration device controller controls the driving of the driving source according to the operation signals from the air conditioner.
  • the cogeneration device controller controls the power supply to the air conditioner from the generator according to the operation signals from the air conditioner.
  • the cogeneration system further includes a waste heat recovery unit for supplying waste heat recovered from the driving source to the air conditioner.
  • the air conditioner and the cogeneration device controller perform data communication by the RS-485 communication protocol.
  • the cogeneration system further includes a monitoring device connected to the cogeneration device controller, for monitoring the operations of the cogeneration device and the air conditioner.
  • a method for controlling a cogeneration system including: applying power to an indoor unit of an air conditioner and a controller of a cogeneration device from outside; transmitting operation signals from the indoor unit of the air conditioner to the controller of the cogeneration device; if the signal transmitted in the transmitting of operation signals is an ON signal, operating the cogeneration device by the controller of the cogeneration device; and operating the cogeneration device to supply produced electricity to an outdoor unit of the air conditioner.
  • the cogeneration device controller stops the cogeneration device.
  • the operation signals outputted in the transmitting of operation signals are OFF signals, and the OFF signals are maintained for a predetermined time, the operation of the cogeneration device is stopped.
  • the operation signals outputted in the transmitting of operation is signals are OFF signals, the power supply from the cogeneration device to the outdoor unit is cut off, and thereafter, the driving source of the cogeneration device is stopped.
  • the cogeneration system and the method for controlling the same in accordance with the invention have an advantage that it is easy to operate the cogeneration device because the operation of the cogeneration device can be controlled according to operation signals of the air conditioner, and have an effect that it is possible to make the best use of the generated electricity of the cogeneration device through an interconnection between the air conditioner and the cogeneration device.
  • the air conditioner controller and the cogeneration device controller are supplied with electricity from an external power source, and the compressor, fan, etc. of the air conditioner are supplied with electricity from the generator, so that it is possible to properly use the generated electricity of the cogeneration system and the external power source, thereby maximizing the utilization of the generated electricity of the cogeneration device and minimizing the utilization factor of the external power source by
  • the suction side of the compressor is pre-heated using waste heat recovered b the engine of the cogeneration device, so that the efficiency of the compressor is improved, to thus reduce unnecessary waiting time when driving the cogeneration device.
  • the operation signals outputted to the cogeneration device controller from a plurality of remote controls are all OFF signals, and the OFF signals are maintained for a predetermined time, the operation of the cogeneration device is stopped, thereby preventing a malfunction thereof.
  • FIG. 1 is a block diagram schematically showing a cogeneration system in accordance with the prior art
  • FIG. 2 is a block diagram schematically showing a cogeneration system in accordance with the present invention.
  • FIG. 3 is a sequential chart showing a method for controlling a cogeneration system in accordance with the present invention.
  • FIG. 2 is a block diagram schematically showing a cogeneration system in accordance with the present invention.
  • the cogeneration system in accordance with the invention, includes, as shown in FIG. 2 , an air conditioner 50 , a cogeneration device 60 for supplying electricity and heat to the air conditioner 50 , and a controller 70 for controlling the operation of the cogeneration device 60 according to operation signals from the air conditioner 50 .
  • a description of the air conditioner 50 will be made with respect to a heat pump type air conditioner.
  • the air conditioner 50 includes a plurality of indoor units 51 installed indoors and supplied with electricity from an external power source 80 , a plurality of outdoor units 52 installed outdoors and supplied with electricity from the cogeneration device 60 , and a plurality of remote controls for wirelessly operating the plurality of indoor units 51 , respectively.
  • the external power source 80 is a commercial power source that is supplied from an electric power company.
  • the air conditioner further includes a controller (not shown) supplied with electricity from the external power source 80 , for controlling the operations of the indoor units 51 and the outdoor units 52 .
  • the air conditioner controller (not shown) is installed in each of the indoor units 51 and outdoor units 52 .
  • the plurality of indoor units 51 and outdoor units 52 are connected in parallel to the external power source 80 by a first power line 81 .
  • the plurality of indoor units 51 and outdoor units 52 are connected in parallel by a first communication line 91 so as to perform data communication by the RS-485 communication protocol.
  • the cogeneration device 60 includes a generator 61 for generating electricity, a driving source for driving the generator 61 and generating heat, and a waste heat recovery unit (not shown) for recovering waste heat generated from the driving source and supplying the waste heat to the suction side of a compressor (not shown) in the outdoor units 52 .
  • An engine 62 a fuel cell, or the like is used as the driving force, and thus a description thereof will be made with respect to the engine 62 .
  • the cogeneration device 60 is connected to the outdoor units 52 by a second power line 82 so as to supply the electricity produced by the generator 61 to the outdoor units 52 .
  • the cogeneration device controller 70 is connected to the external power source 80 by the first power line 81 so as to be supplied with electricity from the external power source 80 .
  • the cogeneration device controller 70 controls the operation of the cogeneration device 60 according to operation signals from the air conditioner 50 , and thus will be described with respect to a case in which the cogeneration device 70 is constructed so as to control the operation of the cogeneration device 60 by operation signals inputted from the remote controls 53 .
  • the cogeneration device controller 70 and the outdoor units 52 are connected by a second communication line 92 so as to perform data communication by the RS-485 communication protocol, while the cogeneration device controller 70 , the generator 61 , and the engine 62 are connected by a third communication line 93 so as to perform data communication by the RS-232 communication protocol.
  • the cogeneration system further includes a monitoring device connected to the cogeneration device controller 70 by a fourth communication line 94 , for monitoring the operations of the cogeneration device 60 and the air conditioner 50 .
  • FIG. 3 is a sequential chart showing a method for controlling a cogeneration system in accordance with the present invention.
  • the remote controls In a second step, if a user operates the remote controls, the remote controls output operation signals of the indoor units.
  • the remote controls output ON signals to the air conditioner controller.
  • the ON signal outputted from the remote controls is also received by the cogeneration device controller by RS-485 communication.
  • the cogeneration device controller operates the cogeneration device according to the ON signals outputted from the remote controls.
  • the cogeneration device controller operates the engine, and the generator is driven by the engine.
  • the electricity produced by the generator is supplied to the outdoor units.
  • the electricity produced by the generator is supplied to loads with relatively high power consumption, such as a compressor, a fan, a pump, etc. in the indoor units.
  • the compressor of the indoor units is pre-heated using waste heat of the cooling water that has cooled down the engine and waste heat of the exhaust gas exhausted from the engine, so that the efficiency of the compressor and the utilization efficiency of waste heat can be increased.
  • the operation signals outputted from the plurality of remote controls to the cogeneration device are all OFF signals, and the OFF signals are maintained for a predetermined time, this is recognized as an operation stopped state of the indoor units.
  • the cogeneration device controller stops the engine after cutting off the supply of the electricity produced by the generator to the outdoor units.
  • the cogeneration system and the method for controlling the same in accordance with the invention have an advantage that it is easy to operate the cogeneration device because the operation of the cogeneration device can be controlled according to operation signals of the air conditioner, and have an effect that it is possible to make the best use of the generated electricity of the cogeneration device through an interconnection between the air conditioner and the cogeneration device.
  • the air conditioner controller and the cogeneration device controller are supplied with electricity from an external power source, and the compressor, fan, etc. of the air conditioner are supplied with electricity from the generator, so that it is possible to properly use the generated electricity of the cogeneration system and the external power source, thereby maximizing the utilization of the generated electricity of the cogeneration device and minimizing the utilization factor of the external power source by
  • the suction side of the compressor is pre-heated using waste heat recovered b the engine of the cogeneration device, so that the efficiency of the compressor is improved, to thus reduce unnecessary waiting time when driving the cogeneration device.
  • the operation signals outputted to the cogeneration device controller from a plurality of remote controls are all OFF signals, and the OFF signals are maintained for a predetermined time, the operation of the cogeneration device is stopped, thereby preventing a malfunction thereof.

Abstract

A cogeneration system and a method for controlling the same have an advantage that it is easy to operate a cogeneration device because the operation of the cogeneration device can be controlled according to operation signals of an air conditioner, and have an effect that it is possible to make the best use of the generated electricity of the cogeneration device through an interconnection between the air conditioner and the cogeneration device.

Description

  • The present disclosure relates to subject mater contained in priority Korean Application No. 10-2005-0061798, filed on Jul. 8, 2005, which is herein expressly incorporated by reference in its entirety.
    • BACKGROUND CF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a cogeneration system, and more particularly to, a cogeneration system, which operates an engine and a generator according to operation signals from an air conditioner, and which uses electricity produced by the generator and waste heat recovered by the engine for the air conditioner, thereby improving the efficiency of the system, and a method for controlling the same.
  • 2. Description of the Background Art
  • In general, a cogeneration system is a system that can produce both electricity and heat from a single energy source. The electricity produced by the cogeneration system is supplied for use to electrical household appliances, such as various kinds of household lighting equipment, heat pump type air conditioners, and so on, and the heat source produced by the cogeneration system is used for hot water supply, warm water or the like.
  • FIG. 1 is a block diagram schematically showing a cogeneration system in accordance with the prior art.
  • The cogeneration system in accordance with the prior art includes, as shown in FIG. 1, a generator 1 for producing electricity, an engine 4 for driving the generator 1, an air conditioner 6 driven by the electricity produced by the generator 2, waste heat recovery equipment 8 for recovering waste heat generated by the engine 4, and a heat demanding site 10, such as a heat storage tank, where waste heat is used.
  • The generator 2 and the air conditioner 6 are connected to a power line for supplying electricity.
  • In the cogeneration system thus constructed, when the engine 4 is operated, the generator 2 produces electricity by the driving force of the engine 4.
  • The electricity produced by the generator 2 is supplied to the air conditioner 6 via the power line 12, to thus operate the air conditioner 6.
  • The waste heat generated by the engine 4 is recovered by the waste heat recovery equipment 8, and used in the heat demanding site 10.
  • When the engine 4 is stopped, the generator 2 is also stopped, to thus stop the power supply to the air conditioner 6 from the generator 2.
  • However, the cogeneration system in accordance with the prior art has a problem in that only the electricity produced by the generator 2 is supplied to the air conditioner 6, and the waste heat recovered by the engine 4 is only utilized for hot water supply, warm water, or the like in the heat demanding site, so that it is impossible to maximize the efficiency of the system.
    • SUMMARY OF THE INVENTION
  • The present invention has been made in an effort to solve the above prior art problem, and provide a cogeneration system, which can improve the efficiency of the system by supplying waste heat recovered from a driving source to a compressor suction side of an air conditioner, and which can remotely control the operations of an engine and a generator according to an operating state of the air conditioner, and a method for controlling the same.
  • To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a cogeneration system, including: a cogeneration device for supplying at least one of electricity and heat to an air conditioner; and a cogeneration device controller for controlling the operation of the cogeneration device according to operation signals from the air conditioner.
  • The cogeneration device controller is supplied with electricity from an external power source,
  • The cogeneration system further includes an air conditioner controller supplied with electricity from an en external power source, for controlling the air conditioner.
  • The air conditioner includes an indoor unit supplied with electricity from an external power source and an outdoor unit supplied with electricity from the generator, and the cogeneration device controller controls the operation of the cogeneration device according to operation signals from the indoor unit.
  • The air conditioner includes an indoor unit supplied with electricity from an external power source, an outdoor unit supplied with electricity from the generator, and a remote control for wirelessly operating the indoor unit, and the cogeneration device controller controls the operation of the cogeneration device according to operation signals from the indoor unit.
  • The cogeneration device includes a generator for generating electricity and a driving source for driving the generator and generating heat.
  • The cogeneration device controller controls the driving of the driving source according to the operation signals from the air conditioner.
  • The cogeneration device controller controls the power supply to the air conditioner from the generator according to the operation signals from the air conditioner.
  • The cogeneration system further includes a waste heat recovery unit for supplying waste heat recovered from the driving source to the air conditioner.
  • The air conditioner and the cogeneration device controller perform data communication by the RS-485 communication protocol.
  • The cogeneration system further includes a monitoring device connected to the cogeneration device controller, for monitoring the operations of the cogeneration device and the air conditioner.
  • In accordance with another aspect of the present invention, there is provided a method for controlling a cogeneration system, including: applying power to an indoor unit of an air conditioner and a controller of a cogeneration device from outside; transmitting operation signals from the indoor unit of the air conditioner to the controller of the cogeneration device; if the signal transmitted in the transmitting of operation signals is an ON signal, operating the cogeneration device by the controller of the cogeneration device; and operating the cogeneration device to supply produced electricity to an outdoor unit of the air conditioner.
  • If the operation signals outputted in the transmitting of an operation signal are OFF signals, the cogeneration device controller stops the cogeneration device.
  • If the operation signals outputted in the transmitting of operation signals are OFF signals, and the OFF signals are maintained for a predetermined time, the operation of the cogeneration device is stopped.
  • If the operation signals outputted in the transmitting of operation is signals are OFF signals, the power supply from the cogeneration device to the outdoor unit is cut off, and thereafter, the driving source of the cogeneration device is stopped.
  • The cogeneration system and the method for controlling the same in accordance with the invention have an advantage that it is easy to operate the cogeneration device because the operation of the cogeneration device can be controlled according to operation signals of the air conditioner, and have an effect that it is possible to make the best use of the generated electricity of the cogeneration device through an interconnection between the air conditioner and the cogeneration device.
  • Additionally, the air conditioner controller and the cogeneration device controller are supplied with electricity from an external power source, and the compressor, fan, etc. of the air conditioner are supplied with electricity from the generator, so that it is possible to properly use the generated electricity of the cogeneration system and the external power source, thereby maximizing the utilization of the generated electricity of the cogeneration device and minimizing the utilization factor of the external power source by
  • Additionally, the suction side of the compressor is pre-heated using waste heat recovered b the engine of the cogeneration device, so that the efficiency of the compressor is improved, to thus reduce unnecessary waiting time when driving the cogeneration device.
  • Additionally, if the operation signals outputted to the cogeneration device controller from a plurality of remote controls are all OFF signals, and the OFF signals are maintained for a predetermined time, the operation of the cogeneration device is stopped, thereby preventing a malfunction thereof.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • In the drawings:
  • FIG. 1 is a block diagram schematically showing a cogeneration system in accordance with the prior art;
  • FIG. 2 is a block diagram schematically showing a cogeneration system in accordance with the present invention; and
  • FIG. 3 is a sequential chart showing a method for controlling a cogeneration system in accordance with the present invention.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Hereinafter, an exemplary embodiment of a cogeneration system and a method for controlling the same in accordance with the invention will be described with reference to the accompanying drawings.
  • There may be a plurality of exemplary embodiments of the cogeneration system and the method for controlling the same in accordance with the invention, but the most preferred embodiment will be described hereinafter.
  • FIG. 2 is a block diagram schematically showing a cogeneration system in accordance with the present invention.
  • The cogeneration system in accordance with the invention, includes, as shown in FIG. 2, an air conditioner 50, a cogeneration device 60 for supplying electricity and heat to the air conditioner 50, and a controller 70 for controlling the operation of the cogeneration device 60 according to operation signals from the air conditioner 50.
  • A description of the air conditioner 50 will be made with respect to a heat pump type air conditioner.
  • The air conditioner 50 includes a plurality of indoor units 51 installed indoors and supplied with electricity from an external power source 80, a plurality of outdoor units 52 installed outdoors and supplied with electricity from the cogeneration device 60, and a plurality of remote controls for wirelessly operating the plurality of indoor units 51, respectively.
  • Here, the external power source 80 is a commercial power source that is supplied from an electric power company.
  • The air conditioner further includes a controller (not shown) supplied with electricity from the external power source 80, for controlling the operations of the indoor units 51 and the outdoor units 52. The air conditioner controller (not shown) is installed in each of the indoor units 51 and outdoor units 52.
  • Therefore, the plurality of indoor units 51 and outdoor units 52 are connected in parallel to the external power source 80 by a first power line 81.
  • The plurality of indoor units 51 and outdoor units 52 are connected in parallel by a first communication line 91 so as to perform data communication by the RS-485 communication protocol.
  • The cogeneration device 60 includes a generator 61 for generating electricity, a driving source for driving the generator 61 and generating heat, and a waste heat recovery unit (not shown) for recovering waste heat generated from the driving source and supplying the waste heat to the suction side of a compressor (not shown) in the outdoor units 52.
  • An engine 62, a fuel cell, or the like is used as the driving force, and thus a description thereof will be made with respect to the engine 62.
  • The cogeneration device 60 is connected to the outdoor units 52 by a second power line 82 so as to supply the electricity produced by the generator 61 to the outdoor units 52.
  • The cogeneration device controller 70 is connected to the external power source 80 by the first power line 81 so as to be supplied with electricity from the external power source 80.
  • The cogeneration device controller 70 controls the operation of the cogeneration device 60 according to operation signals from the air conditioner 50, and thus will be described with respect to a case in which the cogeneration device 70 is constructed so as to control the operation of the cogeneration device 60 by operation signals inputted from the remote controls 53.
  • The cogeneration device controller 70 and the outdoor units 52 are connected by a second communication line 92 so as to perform data communication by the RS-485 communication protocol, while the cogeneration device controller 70, the generator 61, and the engine 62 are connected by a third communication line 93 so as to perform data communication by the RS-232 communication protocol.
  • Additionally, the cogeneration system further includes a monitoring device connected to the cogeneration device controller 70 by a fourth communication line 94, for monitoring the operations of the cogeneration device 60 and the air conditioner 50.
  • The method for controlling the thus-constructed cogeneration system in accordance with the invention will now be described.
  • FIG. 3 is a sequential chart showing a method for controlling a cogeneration system in accordance with the present invention.
  • In the method for controlling the cogeneration system in accordance with the invention, as shown in FIG. 3, in a first step, power is applied from the external power source to the air conditioner controller and a cogeneration device controller.
  • In a second step, if a user operates the remote controls, the remote controls output operation signals of the indoor units.
  • Here, if the user operates the remote controls in order to turn on the indoor units, the remote controls output ON signals to the air conditioner controller.
  • The ON signal outputted from the remote controls is also received by the cogeneration device controller by RS-485 communication.
  • In a third step, the cogeneration device controller operates the cogeneration device according to the ON signals outputted from the remote controls.
  • That is, the cogeneration device controller operates the engine, and the generator is driven by the engine.
  • In a fourth step, the electricity produced by the generator is supplied to the outdoor units.
  • That is, the electricity produced by the generator is supplied to loads with relatively high power consumption, such as a compressor, a fan, a pump, etc. in the indoor units.
  • Accordingly, it is possible to make the best use of the electricity from the generator, and minimize the use of the external power source.
  • Furthermore, the compressor of the indoor units is pre-heated using waste heat of the cooling water that has cooled down the engine and waste heat of the exhaust gas exhausted from the engine, so that the efficiency of the compressor and the utilization efficiency of waste heat can be increased.
  • Meanwhile, in the second step, if the operation signals outputted from the plurality of remote controls to the cogeneration device are all OFF signals, and the OFF signals are maintained for a predetermined time, this is recognized as an operation stopped state of the indoor units.
  • Therefore, the cogeneration device controller stops the engine after cutting off the supply of the electricity produced by the generator to the outdoor units.
  • Although the cogeneration system and the method for controlling the same in accordance with the invention have been described with reference to the illustrated drawings, the present invention is not limited to the embodiments and drawings disclosed in this specification, and can be applied within the scope of the technical concept of the present invention.
  • The cogeneration system and the method for controlling the same in accordance with the invention have an advantage that it is easy to operate the cogeneration device because the operation of the cogeneration device can be controlled according to operation signals of the air conditioner, and have an effect that it is possible to make the best use of the generated electricity of the cogeneration device through an interconnection between the air conditioner and the cogeneration device.
  • Additionally, the air conditioner controller and the cogeneration device controller are supplied with electricity from an external power source, and the compressor, fan, etc. of the air conditioner are supplied with electricity from the generator, so that it is possible to properly use the generated electricity of the cogeneration system and the external power source, thereby maximizing the utilization of the generated electricity of the cogeneration device and minimizing the utilization factor of the external power source by
  • Additionally, the suction side of the compressor is pre-heated using waste heat recovered b the engine of the cogeneration device, so that the efficiency of the compressor is improved, to thus reduce unnecessary waiting time when driving the cogeneration device.
  • Additionally, if the operation signals outputted to the cogeneration device controller from a plurality of remote controls are all OFF signals, and the OFF signals are maintained for a predetermined time, the operation of the cogeneration device is stopped, thereby preventing a malfunction thereof.

Claims (20)

1. A cogeneration system, comprising:
a cogeneration device for supplying at least one of electricity and heat to an air conditioner; and
a cogeneration device controller for controlling the operation of the cogeneration device according to operation signals from the air conditioner.
2. The cogeneration system of claim 1, wherein the cogeneration device controller is supplied with electricity from an external power source.
3. The cogeneration system of claim 1, further comprising an air conditioner controller supplied with electricity from an en external power source, for controlling the air conditioner.
4. The cogeneration system of claim 1, wherein the air conditioner comprises an indoor unit supplied with electricity from an external power source and an outdoor unit supplied with electricity from the generator.
5. The cogeneration system of claim 4, wherein the cogeneration device controller controls the operation of the cogeneration device according to operation signals from the indoor unit.
6. The cogeneration system of claim 4, wherein the air conditioner further comprises a remote control for wirelessly operating the indoor unit, and
the cogeneration device controller controls the operation of the cogeneration device according to operation signals from the indoor unit.
7. The cogeneration system of claim 1, wherein the cogeneration device comprises a generator for generating electricity and a driving source for driving the generator and generating heat.
8. The cogeneration system of claim 7, wherein the cogeneration device controller controls the driving of the driving source according to the operation signals from the air conditioner.
9. The cogeneration system of claim 7, wherein the cogeneration device controller controls the power supply to the air conditioner from the generator according to the operation signals from the air conditioner.
10. The cogeneration system of claim 7, further comprising a waste heat recovery unit for supplying waste heat recovered from the driving source to the air conditioner.
11. The cogeneration system of claim 1, wherein the air conditioner and the cogeneration device controller perform data communication by the RS-485 communication protocol.
12. The cogeneration system of claim 1, further comprising a monitoring device connected to the cogeneration device controller, for monitoring the operations of the cogeneration device and the air conditioner.
13. A cogeneration system, comprising:
an air conditioner;
an air conditioner controller supplied with electricity from an external power source, for controlling the air conditioner;
a generator for supplying electricity to the air conditioner;
a driving source for driving the generator and generating heat; and
a controller supplied with electricity from an external power source, for controlling the operation of the generator according to operation signals from the air conditioner.
14. The cogenerations system of claim 13, wherein the air conditioner comprises an indoor unit supplied with electricity from an external power source and an outdoor unit supplied with electricity from the generator.
15. The cogeneration system of claim 14, wherein the air conditioner further comprises a remote control for wirelessly operating the indoor unit, and
the cogeneration device controller controls the operation of the cogeneration device according to operation signals from the indoor unit.
16. A method for controlling a cogeneration system, comprising:
applying power to an indoor unit of an air conditioner and a controller of a cogeneration device from outside;
transmitting operation signals from the indoor unit of the air conditioner to the controller of the cogeneration device;
if the signal transmitted in the transmitting of operation signals is an ON signal, operating the cogeneration device by the controller of the cogeneration device; and
operating the cogeneration device to supply produced electricity to an outdoor unit of the air conditioner.
17. The method of claim 16, wherein if the operation signals outputted in the transmitting of operation signals are OFF signals, the cogeneration device controller stops the cogeneration device.
18. The method of claim 16, wherein if the operation signals outputted in the transmitting of operation signals are OFF signals, and the OFF signals are maintained for a predetermined time, the operation of the cogeneration device is stopped.
19. The method of claim 16, wherein if the operation signals outputted in the transmitting of operation signals are OFF signals, the power supply from the cogeneration device to the outdoor unit is cut off.
20. The method of claim 19, wherein once the power supply of the cogeneration device is cut off, the driving source of the cogeneration device is stopped.
US11/456,228 2005-07-08 2006-07-10 Cogeneration system and method for controlling the same Abandoned US20070018009A1 (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080023962A1 (en) * 2006-07-31 2008-01-31 Lg Electronics Inc. Cogeneration system
US20080036211A1 (en) * 2006-08-14 2008-02-14 Lg Electronics Inc. Cogeneration system
US20090127867A1 (en) * 2007-11-19 2009-05-21 Honda Motor Co., Ltd. Method and apparatus for controlling cogeneration system
US20120043390A1 (en) * 2010-08-17 2012-02-23 Jinhee Noh Heat pump
US20130076033A1 (en) * 2009-12-08 2013-03-28 Jai Zachary Synergistic energy ecosystem
CN107133015A (en) * 2017-04-11 2017-09-05 上海汇尔通信息技术有限公司 A kind of random digit generation method and system
US20180010809A1 (en) * 2015-01-20 2018-01-11 Osaka Gas Co., Ltd. Heat Supply System
US10036347B1 (en) * 2013-07-19 2018-07-31 Raymond C. Sherry Standby energy generating system
US10602099B2 (en) 2018-07-10 2020-03-24 Saudi Arabian Oil Company Cogen-mom integration using tabulated information recognition
US11341830B2 (en) 2020-08-06 2022-05-24 Saudi Arabian Oil Company Infrastructure construction digital integrated twin (ICDIT)
US11687053B2 (en) 2021-03-08 2023-06-27 Saudi Arabian Oil Company Intelligent safety motor control center (ISMCC)

Citations (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274152A (en) * 1937-07-16 1942-02-24 Honeywell Regulator Co Air conditioning system
US4518823A (en) * 1983-10-06 1985-05-21 Novation, Inc. Modem cartridge and connection for program cartridge type computers
US4760527A (en) * 1983-04-05 1988-07-26 Sidley Joseph D H System for interactively playing poker with a plurality of players
US4873840A (en) * 1988-02-11 1989-10-17 Swedsteam Ab Energy co-generation system
US4987748A (en) * 1986-03-19 1991-01-29 Camp Dresser & Mckee Air conditioning apparatus
US5018021A (en) * 1989-12-13 1991-05-21 Daniel Slater Individualized video center
US5131238A (en) * 1985-04-03 1992-07-21 Gershon Meckler Air conditioning apparatus
US5179517A (en) * 1988-09-22 1993-01-12 Bally Manufacturing Corporation Game machine data transfer system utilizing portable data units
US5181387A (en) * 1985-04-03 1993-01-26 Gershon Meckler Air conditioning apparatus
US5251302A (en) * 1988-04-11 1993-10-05 Square D Company Network interface board having memory mapped mailbox registers including alarm registers for storing prioritized alarm messages from programmable logic controllers
US5259613A (en) * 1992-04-08 1993-11-09 Rio Hotel Casino, Inc. Casino entertainment system
US5276312A (en) * 1990-12-10 1994-01-04 Gtech Corporation Wagering system using smartcards for transfer of agent terminal data
US5321241A (en) * 1992-03-30 1994-06-14 Calculus Microsystems Corporation System and method for tracking casino promotional funds and apparatus for use therewith
US5429361A (en) * 1991-09-23 1995-07-04 Bally Gaming International, Inc. Gaming machine information, communication and display system
US5456648A (en) * 1994-03-14 1995-10-10 Edinburg; Peter J. Reward granting exercise machine
US5563489A (en) * 1994-03-31 1996-10-08 American Standard Inc. Starter contact integrity test
US5586937A (en) * 1993-05-19 1996-12-24 Menashe; Julian Interactive, computerised gaming system with remote terminals
US5611729A (en) * 1993-11-05 1997-03-18 Community Lottery Systems, Inc. System for displaying the output of a game of chance in a different format
US5624316A (en) * 1994-06-06 1997-04-29 Catapult Entertainment Inc. Video game enhancer with intergral modem and smart card interface
US5655961A (en) * 1994-10-12 1997-08-12 Acres Gaming, Inc. Method for operating networked gaming devices
US5755621A (en) * 1996-05-09 1998-05-26 Ptt, Llc Modified poker card/tournament game and interactive network computer system for implementing same
US5770533A (en) * 1994-05-02 1998-06-23 Franchi; John Franco Open architecture casino operating system
US5909486A (en) * 1997-03-19 1999-06-01 Walker Asset Management Limited Partnership Method and apparatus for awarding and redeeming prepaid telephone time
US5984783A (en) * 1994-04-01 1999-11-16 Fujitsu Limited Game machine having a communication terminal for playing games over a network service system
US5984780A (en) * 1993-12-27 1999-11-16 Kabushiki Kaisha Ace Denken Image display gaming system and gaming house management system
US6113495A (en) * 1997-03-12 2000-09-05 Walker Digital, Llc Electronic gaming system offering premium entertainment services for enhanced player retention
US6139431A (en) * 1997-03-21 2000-10-31 Walker Digital, Llc Free long distance calls on slot machines
US6196009B1 (en) * 1998-10-12 2001-03-06 Isuzu Motors Limited Freezer/refrigerator vehicle
US20010049933A1 (en) * 2000-06-09 2001-12-13 The Japan Steel Works, Ltd. Cogeneration system using waste-heat gas generated in micro gas turbine
US20020108745A1 (en) * 1999-01-19 2002-08-15 Shigeaki Kimura Cogeneration system with a heat reservoir
US20020154026A1 (en) * 2001-04-24 2002-10-24 Sanyo Electric Co., Ltr. Wireless remote controller, wireless remote control method, and air conditioner using the same
US20020196342A1 (en) * 2001-06-21 2002-12-26 Walker Jay S. Methods and systems for documenting a player's experience in a casino environment
US20030106332A1 (en) * 2000-06-28 2003-06-12 Hiroshi Okamoto Refrigerating apparatus for use in vehicles, using an engine as power source
US6584793B2 (en) * 2001-08-31 2003-07-01 Hitachi, Ltd. Cogeneration system
US6641484B2 (en) * 2001-09-21 2003-11-04 Igt Gaming machine including security data collection device
US20040007879A1 (en) * 2002-04-16 2004-01-15 Frank Ruggieri End point power production
US6722985B2 (en) * 2001-04-19 2004-04-20 Igt Universal player tracking system
US6755741B1 (en) * 1999-01-07 2004-06-29 Yacob Rafaeli Gambling game system and method for remotely-located players
US6955601B2 (en) * 2001-10-01 2005-10-18 Atlantic City Coin & Slot Service Company, Inc. Telephone gaming device
US20060037348A1 (en) * 2004-08-17 2006-02-23 Lg Electronics Inc. Cogeneration system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01275218A (en) * 1988-04-28 1989-11-02 Sanden Corp Cooling and refrigerating device for refrigerator car
JP2698657B2 (en) * 1989-05-19 1998-01-19 サンデン株式会社 Vehicle refrigeration equipment
JPH04331429A (en) * 1991-04-26 1992-11-19 Kubota Corp Power supply device from engine generator to air conditioner
JP2001272057A (en) * 2000-03-29 2001-10-05 Yanmar Diesel Engine Co Ltd Generating system for outdoor machine
JP2002106911A (en) * 2000-09-28 2002-04-10 Toshiba Kyaria Kk Air conditioner and its control system
JP4179832B2 (en) * 2001-09-13 2008-11-12 大阪瓦斯株式会社 Heat pump equipment
JP4165281B2 (en) * 2003-04-10 2008-10-15 アイシン精機株式会社 Engine-driven air conditioner with power generation function
JP2005140373A (en) * 2003-11-05 2005-06-02 Denso Corp Engine driven type refrigeration cycle device with generator

Patent Citations (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2274152A (en) * 1937-07-16 1942-02-24 Honeywell Regulator Co Air conditioning system
US4760527A (en) * 1983-04-05 1988-07-26 Sidley Joseph D H System for interactively playing poker with a plurality of players
US4518823A (en) * 1983-10-06 1985-05-21 Novation, Inc. Modem cartridge and connection for program cartridge type computers
US5131238A (en) * 1985-04-03 1992-07-21 Gershon Meckler Air conditioning apparatus
US5181387A (en) * 1985-04-03 1993-01-26 Gershon Meckler Air conditioning apparatus
US4987748A (en) * 1986-03-19 1991-01-29 Camp Dresser & Mckee Air conditioning apparatus
US4873840A (en) * 1988-02-11 1989-10-17 Swedsteam Ab Energy co-generation system
US5251302A (en) * 1988-04-11 1993-10-05 Square D Company Network interface board having memory mapped mailbox registers including alarm registers for storing prioritized alarm messages from programmable logic controllers
US5179517A (en) * 1988-09-22 1993-01-12 Bally Manufacturing Corporation Game machine data transfer system utilizing portable data units
US5018021A (en) * 1989-12-13 1991-05-21 Daniel Slater Individualized video center
US5276312A (en) * 1990-12-10 1994-01-04 Gtech Corporation Wagering system using smartcards for transfer of agent terminal data
US5429361A (en) * 1991-09-23 1995-07-04 Bally Gaming International, Inc. Gaming machine information, communication and display system
US5321241A (en) * 1992-03-30 1994-06-14 Calculus Microsystems Corporation System and method for tracking casino promotional funds and apparatus for use therewith
US5259613A (en) * 1992-04-08 1993-11-09 Rio Hotel Casino, Inc. Casino entertainment system
US5586937A (en) * 1993-05-19 1996-12-24 Menashe; Julian Interactive, computerised gaming system with remote terminals
US5611729A (en) * 1993-11-05 1997-03-18 Community Lottery Systems, Inc. System for displaying the output of a game of chance in a different format
US5984780A (en) * 1993-12-27 1999-11-16 Kabushiki Kaisha Ace Denken Image display gaming system and gaming house management system
US5456648A (en) * 1994-03-14 1995-10-10 Edinburg; Peter J. Reward granting exercise machine
US5563489A (en) * 1994-03-31 1996-10-08 American Standard Inc. Starter contact integrity test
US5984783A (en) * 1994-04-01 1999-11-16 Fujitsu Limited Game machine having a communication terminal for playing games over a network service system
US5770533A (en) * 1994-05-02 1998-06-23 Franchi; John Franco Open architecture casino operating system
US5624316A (en) * 1994-06-06 1997-04-29 Catapult Entertainment Inc. Video game enhancer with intergral modem and smart card interface
US5655961A (en) * 1994-10-12 1997-08-12 Acres Gaming, Inc. Method for operating networked gaming devices
US5755621A (en) * 1996-05-09 1998-05-26 Ptt, Llc Modified poker card/tournament game and interactive network computer system for implementing same
US6113495A (en) * 1997-03-12 2000-09-05 Walker Digital, Llc Electronic gaming system offering premium entertainment services for enhanced player retention
US6229879B1 (en) * 1997-03-19 2001-05-08 Walker Digital, Llc Method and apparatus for awarding and redeeming prepaid telephone time
US6327351B1 (en) * 1997-03-19 2001-12-04 Walker Digital, Llc Method and apparatus for awarding and redeeming prepaid telephone time
US5909486A (en) * 1997-03-19 1999-06-01 Walker Asset Management Limited Partnership Method and apparatus for awarding and redeeming prepaid telephone time
US6139431A (en) * 1997-03-21 2000-10-31 Walker Digital, Llc Free long distance calls on slot machines
US6196009B1 (en) * 1998-10-12 2001-03-06 Isuzu Motors Limited Freezer/refrigerator vehicle
US6755741B1 (en) * 1999-01-07 2004-06-29 Yacob Rafaeli Gambling game system and method for remotely-located players
US20020108745A1 (en) * 1999-01-19 2002-08-15 Shigeaki Kimura Cogeneration system with a heat reservoir
US20010049933A1 (en) * 2000-06-09 2001-12-13 The Japan Steel Works, Ltd. Cogeneration system using waste-heat gas generated in micro gas turbine
US20030106332A1 (en) * 2000-06-28 2003-06-12 Hiroshi Okamoto Refrigerating apparatus for use in vehicles, using an engine as power source
US6722985B2 (en) * 2001-04-19 2004-04-20 Igt Universal player tracking system
US20020154026A1 (en) * 2001-04-24 2002-10-24 Sanyo Electric Co., Ltr. Wireless remote controller, wireless remote control method, and air conditioner using the same
US20020196342A1 (en) * 2001-06-21 2002-12-26 Walker Jay S. Methods and systems for documenting a player's experience in a casino environment
US6584793B2 (en) * 2001-08-31 2003-07-01 Hitachi, Ltd. Cogeneration system
US6641484B2 (en) * 2001-09-21 2003-11-04 Igt Gaming machine including security data collection device
US6955601B2 (en) * 2001-10-01 2005-10-18 Atlantic City Coin & Slot Service Company, Inc. Telephone gaming device
US20040007879A1 (en) * 2002-04-16 2004-01-15 Frank Ruggieri End point power production
US20060037348A1 (en) * 2004-08-17 2006-02-23 Lg Electronics Inc. Cogeneration system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080023962A1 (en) * 2006-07-31 2008-01-31 Lg Electronics Inc. Cogeneration system
US20080036211A1 (en) * 2006-08-14 2008-02-14 Lg Electronics Inc. Cogeneration system
US20090127867A1 (en) * 2007-11-19 2009-05-21 Honda Motor Co., Ltd. Method and apparatus for controlling cogeneration system
US8004099B2 (en) * 2007-11-19 2011-08-23 Honda Motor Co., Ltd. Method and apparatus for controlling cogeneration system
US9429018B2 (en) * 2009-12-08 2016-08-30 Electromotion Energy Corporation Synergistic energy ecosystem
US20130076033A1 (en) * 2009-12-08 2013-03-28 Jai Zachary Synergistic energy ecosystem
US20170234549A1 (en) * 2009-12-08 2017-08-17 Electromotion Energy Corporation Synergistic energy ecosystem
US20120043390A1 (en) * 2010-08-17 2012-02-23 Jinhee Noh Heat pump
US9316402B2 (en) * 2010-08-17 2016-04-19 Lg Electronics Inc. Heat pump
US10036347B1 (en) * 2013-07-19 2018-07-31 Raymond C. Sherry Standby energy generating system
US10995697B1 (en) 2013-07-19 2021-05-04 Raymond C. Sherry Energy generating system for supplying energy to a premises
US20180010809A1 (en) * 2015-01-20 2018-01-11 Osaka Gas Co., Ltd. Heat Supply System
US10544945B2 (en) * 2015-01-20 2020-01-28 Osaka Gas Co., Ltd. Heat supply system
CN107133015A (en) * 2017-04-11 2017-09-05 上海汇尔通信息技术有限公司 A kind of random digit generation method and system
US10602099B2 (en) 2018-07-10 2020-03-24 Saudi Arabian Oil Company Cogen-mom integration using tabulated information recognition
US11341830B2 (en) 2020-08-06 2022-05-24 Saudi Arabian Oil Company Infrastructure construction digital integrated twin (ICDIT)
US11881094B2 (en) 2020-08-06 2024-01-23 Saudi Arabian Oil Company Infrastructure construction digital integrated twin (ICDIT)
US11687053B2 (en) 2021-03-08 2023-06-27 Saudi Arabian Oil Company Intelligent safety motor control center (ISMCC)

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KR100755322B1 (en) 2007-09-05
CN100504209C (en) 2009-06-24

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