Patents by Inventor Thomas Johannes Frey

Thomas Johannes Frey 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: 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: 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
  • 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
  • Patent number: 8511085
    Abstract: In one aspect, the present invention provides a direct evaporator apparatus for use in an organic Rankine cycle energy recovery system, comprising: (a) a housing comprising a heat source gas inlet, and a heat source gas outlet, the housing defining a heat source gas flow path from the inlet to the outlet; and (b) a heat exchange tube disposed within the heat source flow path, the heat exchange tube being configured to accommodate an organic Rankine cycle working fluid, the heat exchange tube comprising a working fluid inlet and a working fluid outlet. The direct evaporator apparatus is configured such that at least a portion of a heat source gas having contacted at least a portion of the heat exchange tube is in thermal contact with heat source gas entering the direct evaporator apparatus via the heat source gas inlet. An organic Rankine cycle energy recovery system and a method of energy recovery are also provided.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: August 20, 2013
    Assignee: General Electric Company
    Inventors: Thomas Johannes Frey, Matthew Alexander Lehar
  • 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: 20120216502
    Abstract: A gas turbine intercooler operates to heat a predetermined organic fluid via heat generated by the gas turbine. The heated organic fluid remains in a partially evaporated or non-evaporated liquid phase to provide a heated organic fluid that reaches a state of saturation with a vapor quality less than unity. An expansion machine expands the heated organic fluid via a Tri-Lateral Flash cycle to increase the vapor quality and generate electrical power therefrom.
    Type: Application
    Filed: February 25, 2011
    Publication date: August 30, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian Walter Freund, Pierre Sebastien Huck, Thomas Johannes Frey
  • Publication number: 20120159923
    Abstract: A steam cycle power plant includes a gas turbine, a gas turbine intercooler, a steam turbine, and a heat recovery steam generator (HRSG). The gas turbine intercooler recovers unused heat generated via the gas turbine and transfers substantially all of the recovered heat for generating extra steam for driving the steam turbine.
    Type: Application
    Filed: December 23, 2010
    Publication date: June 28, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian Walter Freund, Richard Bodek, Kenneth Charles Bodek, Thomas Johannes Frey, Pierre Sebastien Huck
  • Patent number: 8186161
    Abstract: A control system includes a temperature sensor communicatively coupled to an exit of an expander of an expansion system and configured to detect temperature of the working fluid flowing through the exit of the expander. A pressure sensor is communicatively coupled to the exit of the expander and configured to detect pressure of the working fluid flowing through the exit of the expander. A controller is configured to receive output signals from the temperature sensor and the pressure sensor and control operation of one or more components of the expansion system so as to control the thermodynamic conditions at the exit of the expander while driving a quality of vapor of the working fluid at the exit of the expander towards a predetermined degree of superheat.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: May 29, 2012
    Assignee: General Electric Company
    Inventors: Gabor Ast, Michael Adam Bartlett, Thomas Johannes Frey, Herbert Kopecek, Helge Burghard Herwig Klockow, Matthew Alexander Lehar
  • Publication number: 20120125002
    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: Application
    Filed: November 19, 2010
    Publication date: May 24, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Matthew Alexander Lehar, Sebastian Walter Freund, Thomas Johannes Frey, Gabor Ast, Pierre Sebastien Huck, Monika Muehlbauer
  • Publication number: 20120073289
    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: Application
    Filed: September 29, 2010
    Publication date: March 29, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Gabor Ast, Sebastian Walter Freund, Thomas Johannes Frey, Pierre Sebastien Huck, Herbert Kopecek, Günther Wall
  • Publication number: 20120023943
    Abstract: The present invention provides an organic Rankine cycle energy recovery system comprising features which provide for fire suppression and/or ignition suppression in the event of an unintentional release of a flammable component of the system, for example a flammable working fluid such as cyclopentane, into a part of the of the system in which the prevailing temperature is higher than the autoignition temperature of the flammable component. In one embodiment, and the organic Rankine cycle energy recovery system comprises an inert gas source disposed upstream of a hydrocarbon evaporator and configured to purge the hydrocarbon evaporator with an inert gas on detection of a leak thereby.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 2, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian W. Freund, Matthew Alexander Lehar, Thomas Johannes Frey, Gabor Ast, Pierre Sebastien Huck
  • Publication number: 20120017597
    Abstract: A hybrid power generation system includes a gas turbine engine system and a supercritical rankine cycle system. The gas turbine engine system includes a first compressor, an intercooler, and a second compressor. A first compressor is configured to compress an inlet airflow to produce a first outlet airflow at a first pressure. An intercooler is coupled to the first compressor and configured to cool the first outlet airflow exiting the first compressor to produce a second outlet airflow. A second compressor is coupled to the intercooler and configured to compress the second outlet airflow exiting the intercooler to produce a third outlet airflow at a second pressure. The supercritical rankine cycle system is coupled to the gas turbine engine system.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 26, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian Walter Freund, Thomas Johannes Frey, Pierre Sebastien Huck
  • Publication number: 20120000201
    Abstract: A system and method are provided for using the thermal mass of an ORC, the working fluid, the oil loop, the cooling fluid loop and all components, to provide additional transient power to an electrical grid. A pre-heater transfers heat from the cooling fluid to a low temperature (LT) ORC loop working fluid. A LT ORC loop expander generates transient power to support stabilization of the electrical grid. A heat exchanger transfers heat from the thermal oil to a high temperature (HT) ORC loop working fluid. A HT ORC loop expander generates transient power to support stabilization of the electrical grid.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Gabor Ast, Herbert Kopecek, Thomas Johannes Frey, Pierre Sebastien Huck
  • Publication number: 20120000200
    Abstract: In one embodiment, a system includes a valve system switchable between a waste heat recovery position configured to direct incoming exhaust gas through an interior volume of an exhaust section of an engine and a bypass position configured to direct the incoming exhaust gas through a bypass duct to bypass a heat recovery boiler disposed within the interior volume. The system also includes an inert gas purging system configured to inject an inert gas into the interior volume to displace residual exhaust gas from the interior volume.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Applicant: General Electric Company
    Inventors: Sebastian W. Freund, Herbert Kopecek, Matthew Alexander Lehar, Pierre Sébastien Huck, Albert Andreas Scharl, Mario Martini, Paolo Castellani, Gabor Ast, Thomas Johannes Frey, Giacomo Seghi, Vincenzo Amato, Mauro Cappelli, Stefano Bartolozzi
  • Publication number: 20110308252
    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: Application
    Filed: June 18, 2010
    Publication date: December 22, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Herbert Kopecek, Gabor Ast, Thomas Johannes Frey, Pierre Sebastien Huck
  • Publication number: 20110209473
    Abstract: A system and method for waste heat recovery in exhaust gas recirculation is disclosed. The system includes an engine having an intake manifold and an exhaust manifold, an exhaust conduit connected to the exhaust manifold, and a turbocharger having a turbine and a compressor, the turbine being connected to the exhaust conduit to receive a portion of the exhaust gas from the exhaust manifold. The system also includes an EGR system connected to the exhaust conduit to receive a portion of the exhaust gas, with the EGR system including an EGR conduit that is connected to the exhaust conduit to receive a portion of the exhaust gas, a heat exchanger connected to the EGR conduit and being configured to extract heat from the exhaust gas, and a waste heat recovery system connected to the heat exchanger and configured to capture the heat extracted by the heat exchanger.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Inventors: Jassin Fritz, Georgios Bikas, Gabor Ast, Alexander Simpson, Thomas Johannes Frey, Rodrigo Rodriguez Erdmenger