Patents by Inventor Gabor Ast

Gabor Ast has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9708973
    Abstract: A power generation system is provided. The power generation system includes a reformer system for producing syngas for an internal combustion engine. The reformer system includes a reforming unit having a catalyst for thermochemical conversion of a first portion of a hydrocarbon fuel to the syngas. The power generation system also includes a waste heat recovery system including at least one organic Rankine cycle flow path of working fluid, at least one waste heat recovery exchanger, for extracting waste heat from the reformer system, and at least one evaporator for using the extracted waste heat for heating the working fluid.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: July 18, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Günther Wall, Anthony Mark Thompson, Wei Wei, Gabor Ast
  • Publication number: 20160169055
    Abstract: The invention relates to a thermodynamic circuit process device comprising a working medium having a lubricant additive; an expansion machine (5) for converting enthalpy in the working medium into mechanical energy; a multi-stage pressure-increasing apparatus (1) for the step-by-step pressurisation of the working medium; a means (4) for branching a part of the working medium between two stages of the multi-stage pressure-increasing apparatus (1); and a means (4) for feeding the branched off part of the working medium to one or a plurality of bearing points of the expansion machine. The invention further relates to a corresponding method for lubricating an expansion machine in a thermodynamic circuit process device.
    Type: Application
    Filed: December 3, 2013
    Publication date: June 16, 2016
    Inventors: Andreas Grill, Jens-Patrick Springer, Gabor Ast, Andreas Sichert, Richard Aumann, Andreas Schuster
  • Patent number: 9249691
    Abstract: A Rankine cycle device includes a heat exchanger for supplying heat to a working fluid and an expansion device for expanding the working fluid. A valve is disposed between the heat exchanger and the expansion device and a cooling device is reduces a temperature of the working fluid. A pump moves the working fluid through the Rankine cycle device and a sensor is used to sense a pressure of the working fluid. A controller is operable to open the valve based upon the sensed pressure of the working fluid.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: February 2, 2016
    Assignee: General Electric Company
    Inventors: Gabor Ast, Herbert Kopecek, Simon Schoewel
  • Patent number: 8904791
    Abstract: A power generation system is provided. The system comprises a first Rankine cycle-first working fluid circulation loop comprising a heater, an expander, a heat exchanger, a recuperator, a condenser, a pump, and a first working fluid; integrated with a) a second Rankine cycle-second working fluid circulation loop comprising a heater, an expander, a condenser, a pump, and a second working fluid comprising an organic fluid; and b) an absorption chiller cycle comprising a third working fluid circulation loop comprising an evaporator, an absorber, a pump, a desorber, a condenser, and a third working fluid comprising a refrigerant. In one embodiment, the first working fluid comprises CO2. In one embodiment, the first working fluid comprises helium, air, or nitrogen.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: December 9, 2014
    Assignee: General Electric Company
    Inventors: Matthew Alexander Lehar, Sebastian Walter Freund, Thomas Johannes Frey, Gabor Ast, Pierre Sebastien Huck, Monika Muehlbauer
  • Patent number: 8875515
    Abstract: An expansion system is presented. One embodiment of the expansion system that includes a pump configured to pressurize a condensed working fluid received from a condenser. The expansion system further includes a heat exchanger coupled to the pump and configured to vaporize the condensed working fluid received from the pump. The expansion system also includes an expander coupled to the heat exchanger and configured to expand the vaporized working fluid flowing from an inlet side of the expander to an outlet side of the expander. In addition, the expansion system includes a generator coupled to the expander and configured to generate energy in response to the expansion of the vaporized working fluid. Further, the expansion system includes an integrated cooling unit configured to convey at least a portion of the condensed working fluid from an inlet side of the generator to an outlet side of the generator to dissipate heat generated by the generator.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: November 4, 2014
    Assignee: General Electric Company
    Inventors: Gabor Ast, Herbert Kopecek, Sebastian Walter Freund, Pierre Sebastien Huck
  • Patent number: 8813498
    Abstract: A pressure sensor measures an organic Rankine cycle (ORC) working fluid pressure in front of a radial inflow turbine, while a temperature sensor measures an ORC working fluid temperature in front of the radial inflow turbine. A controller responsive to algorithmic software determines a superheated temperature of the working fluid in front of the radial inflow turbine based on the measured working fluid pressure and the measured working fluid temperature. The controller then manipulates the speed of a working fluid pump, the pitch of turbine variable inlet guide vanes when present, and combinations thereof, in response to the determined superheated temperature to maintain the superheated temperature of the ORC working fluid in front of the radial inflow turbine close to a predefined set point. The superheated temperature can thus be maintained in the absence of sensors other than pressure and temperature sensors.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: August 26, 2014
    Assignee: General Electric Company
    Inventors: Herbert Kopecek, Gabor Ast, Thomas Johannes Frey, Pierre Sebastien Huck
  • Patent number: 8739535
    Abstract: A system and method improves cold start performance of an organic Rankine cycle (ORC) plant. The system includes one or more pumps configured to pump condensed fluid from points of natural accumulation of the condensed fluid within an ORC loop back into a corresponding low pressure liquid storage vessel shortly after shutting down the ORC plant to ensure the start-up routine works properly for the next ORC plant start event. One or more of the pumps can also be configured to pump fluid away from the ORC expansion machine(s) at any time prior to starting the ORC if the fluid is in a liquid phase.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: June 3, 2014
    Assignee: General Electric Company
    Inventors: Herbert Kopecek, Gabor Ast, Sebastian Freund, Thomas Johannes Frey, Pierre Sebastien Huck, Simon Schoewel
  • Patent number: 8739541
    Abstract: A Rankine cycle system includes: an evaporator configured to receive heat from a heat source and circulate a working fluid to remove heat from the heat source; an expander in flow communication with the evaporator and configured to expand the working fluid fed from the evaporator; a condenser in flow communication with the expander and configured to condense the working fluid fed from the expander; a pump in flow communication with the condenser and configured to pump the working fluid fed from the condenser; a first conduit for feeding a first portion of the working fluid from the pump to the evaporator; and a second conduit for feeding a second portion of the working fluid from the pump to the expander.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: June 3, 2014
    Assignee: General Electric Company
    Inventors: Gabor Ast, Sebastian Walter Freund, Thomas Johannes Frey, Pierre Sebastien Huck, Herbert Kopecek, Günther Wall
  • Publication number: 20140109844
    Abstract: A power generation system is provided. The power generation system includes a reformer system for producing syngas for an internal combustion engine. The reformer system includes a reforming unit having a catalyst for thermochemical conversion of a first portion of a hydrocarbon fuel to the syngas. The power generation system also includes a waste heat recovery system including at least one organic Rankine cycle flow path of working fluid, at least one waste heat recovery exchanger, for extracting waste heat from the reformer system, and at least one evaporator for using the extracted waste heat for heating the working fluid.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 24, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Günther Wall, Anthony Mark Thompson, Wei Wei, Gabor Ast
  • Patent number: 8650879
    Abstract: The present application and the resultant patent provide a waste heat recovery system. The waste heat recovery system may include a first organic rankine cycle system, a second organic rankine cycle system, and one or more preheaters. The preheaters may be one or more charge air coolers. The charge air coolers may be in communication with the first organic rankine cycle system, the second organic rankine cycle system, or both the first organic rankine cycle system and the second rankine cycle system.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: February 18, 2014
    Assignee: General Electric Company
    Inventors: Sebastian W. Freund, Gabor Ast, Pierre Huck, Sara Rocci Denis, Monika Muchlbauer, Albert Scharl, Wolfgang Madl
  • Patent number: 8616006
    Abstract: A laser ignition system for an internal combustion engine, and more specifically a gas turbine engine, is provided. The system including a laser light source configured to generate a laser beam, an ignition port configured to provide optimized optical access of the laser beam to a combustion chamber and an optical beam guidance component disposed between the laser light source and the ignition port. The optical beam guidance component is configured to include optimized optic components to transmit the laser beam to irradiate on a fuel mixture supplied into the combustion chamber to generate a combustor flame in a flame region. A method for igniting a fuel mixture in an internal combustion engine is also presented.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: December 31, 2013
    Assignee: General Electric Company
    Inventors: Sara Rocci Denis, Herbert Kopecek, Richard Wade Stickles, Chukwueloka Obiora Umeh, Gabor Ast, Mark Patrick Kelsey, Steven Clayton Vise, Gary Lee Leonard, Shai Birmaher
  • Patent number: 8590307
    Abstract: A waste heat recovery plant control system includes a programmable controller configured to generate expander speed control signals, expander inlet guide vane pitch control signals, fan speed control signals, pump speed control signals, and valve position control signals in response to an algorithmic optimization software to substantially maximize power output or efficiency of a waste heat recovery plant based on organic Rankine cycles, during mismatching temperature levels of external heat source(s), during changing heat loads coming from the heat sources, and during changing ambient conditions and working fluid properties. The waste heat recovery plant control system substantially maximizes power output or efficiency of the waste heat recovery plant during changing/mismatching heat loads coming from the external heat source(s) such as the changing amount of heat coming along with engine jacket water and its corresponding exhaust in response to changing engine power.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: November 26, 2013
    Assignee: General Electric Company
    Inventors: Herbert Kopecek, Gabor Ast, Thomas Johannes Frey, Sebastian Freund, Pierre Sebastien Huck
  • Patent number: 8572972
    Abstract: A method, system, and apparatus including a compressed air energy storage (CAES) system including a compression train with a compressor path, a storage volume configured to store compressed air, a compressed air path configured to provide passage of compressed air egressing from the compression train to the storage volume, and a heat recovery system coupled to at least one of the compressor path and the compressed air path and configured to draw heat from at least one of the compressor path and the compressed air path to a first liquid. The compression train is configured to provide passage of compressed air from a first compressor to a second compressor. The heat recovery system includes a first evaporator configured to evaporate the first liquid to a first gas and a first generator configured to produce electricity based on an expansion of the first gas.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: November 5, 2013
    Assignee: General Electric Company
    Inventors: Thomas Johannes Frey, Matthias Finkenrath, Gabor Ast, Stephanie Marie-Noelle Hoffmann, Matthew Lehar, Richard Aumann
  • Patent number: 8561405
    Abstract: A waste heat recovery system includes at least two integrated rankine cycle systems coupled to at least two separate heat sources having different temperatures. The first rankine cycle system is coupled to a first heat source and configured to circulate a first working fluid. The second rankine cycle system is coupled to at least one second heat source and configured to circulate a second working fluid. The at least one second heat source includes a lower temperature heat source than the first heat source. The first and second working fluid are circulatable in heat exchange relationship through a cascading heat exchange unit for condensation of the first working fluid in the first rankine cycle system and evaporation of the second working fluid in the second rankine cycle system.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: October 22, 2013
    Assignee: General Electric Company
    Inventors: Gabor Ast, Michael Adam Bartlett, Thomas Johannes Frey, Matthew Alexander Lehar
  • Publication number: 20130174550
    Abstract: A Rankine cycle device includes a heat exchanger for supplying heat to a working fluid and an expansion device for expanding the working fluid. A valve is disposed between the heat exchanger and the expansion device and a cooling device is reduces a temperature of the working fluid. A pump moves the working fluid through the Rankine cycle device and a sensor is used to sense a pressure of the working fluid. A controller is operable to open the valve based upon the sensed pressure of the working fluid.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 11, 2013
    Inventors: Gabor Ast, Herbert Kopecek, Simon Schoewel
  • Patent number: 8459030
    Abstract: A process fluid cooler can extract thermal energy from a process fluid including carbon dioxide. An absorber can transfer carbon dioxide from the process fluid to a removal fluid. A reboiler can heat the removal fluid so as to cause carbon dioxide to be released from the removal fluid and outputted as part of a reboiler output stream. The reboiler can also output a heating fluid. A stripper condenser can extract thermal energy from the reboiler output stream so as to cause condensation of water associated with the reboiler output stream and to remove carbon dioxide therefrom. A compression system can remove thermal energy from carbon dioxide received from the stripper condenser. A heat engine can be configured to operate according to an organic Rankine cycle, receiving thermal energy from the heating fluid and/or extracted at the process fluid cooler, at the stripper condenser, and/or at the compression system.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: June 11, 2013
    Assignee: General Electric Company
    Inventors: Matthias Finkenrath, Gabor Ast, Michael Adam Bartlett, Vittorio Tola
  • Publication number: 20130081395
    Abstract: A system includes a gas turbine system, a thermal energy storage device, and a heat recovery system. The gas turbine system is powered by solar energy to generate a first amount of electric power. The thermal energy storage device is coupled to the gas turbine system. The thermal energy storage device is configured to selectively receive expanded exhaust gas from the gas turbine system and store heat of the expanded exhaust gas. The heat recovery system is coupled to the gas turbine system and the thermal energy storage device. The heat recovery system is selectively powered by at least one of the gas turbine system and the thermal energy storage device to generate a second amount of electric power.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Thomas Johannes Frey, Gabor Ast, Clarissa Sara Katharina Belloni, Matthias Finkenrath
  • Publication number: 20120285169
    Abstract: The present application and the resultant patent provide a waste heat recovery system for recovering heat from a number of turbocharger stages. The waste heat recovery system may include a simple organic rankine cycle system and a number of charge air coolers in communication with the turbocharger stages and the simple organic rankine cycle system. The charge air coolers are positioned in a number of parallel branches of the simple organic rankine cycle system.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 15, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian W. Freund, Gabor Ast, Pierre Huck, Sara Rocci Denis, Monika Muehlbauer, Albert Scharl, Wolfgang Madl
  • Patent number: 8302399
    Abstract: The present application and the resultant patent provide a waste heat recovery system for recovering heat from a number of turbocharger stages. The waste heat recovery system may include a simple organic rankine cycle system and a number of charge air coolers in communication with the turbocharger stages and the simple organic rankine cycle system. The charge air coolers are positioned in a number of parallel branches of the simple organic rankine cycle system.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: November 6, 2012
    Assignee: General Electric Company
    Inventors: Sebastian W. Freund, Gabor Ast, Pierre Huck, Sara Rocci Denis, Monika Muehlbauer, Albert Scharl, Wolfgang Madl
  • Publication number: 20120272648
    Abstract: An expansion system is presented. One embodiment of the expansion system that includes a pump configured to pressurize a condensed working fluid received from a condenser. The expansion system further includes a heat exchanger coupled to the pump and configured to vaporize the condensed working fluid received from the pump. The expansion system also includes an expander coupled to the heat exchanger and configured to expand the vaporized working fluid flowing from an inlet side of the expander to an outlet side of the expander. In addition, the expansion system includes a generator coupled to the expander and configured to generate energy in response to the expansion of the vaporized working fluid. Further, the expansion system includes an integrated cooling unit configured to convey at least a portion of the condensed working fluid from an inlet side of the generator to an outlet side of the generator to dissipate heat generated by the generator.
    Type: Application
    Filed: April 29, 2011
    Publication date: November 1, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Gabor Ast, Herbert Kopecek, Sebastian Walter Freund, Pierre Sebastien Huck