Patents by Inventor Sebastian Walter Freund

Sebastian Walter Freund 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: 8627662
    Abstract: A system for recovering heat from recirculating exhaust gases is provided. The system includes a first exhaust manifold in fluid communication with multiple combustion chambers of an engine. The system also includes a turbocharger having a turbine stage and a compressor stage, wherein the turbine stage comprises an inlet port in fluid communication with the first exhaust manifold and the compressor stage includes an inlet port for air intake and an outlet port for compressed air. The system includes an exhaust gas recirculation cooler having a first flow path and a second flow path, wherein the first flow path is configured to receive a portion of exhaust gas from the first exhaust manifold flowing through an exhaust gas recirculation loop. The second flow path includes an inlet for receiving a compressed air for drawing heat from the exhaust gas flowing through the first flow path.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: January 14, 2014
    Assignee: General Electric Company
    Inventors: Sebastian Walter Freund, Jassin Marcel Fritz
  • Publication number: 20140000261
    Abstract: A waste heat recovery system is provided. The waste heat recovery system includes a Rankine cycle system for circulating a working fluid. The Rankine cycle system includes at least one first waste heat recovery boiler configured to transfer heat from a heat source to the working fluid. The Rankine cycle system also includes a first expander configured to receive the heated working fluid from the at least one first waste heat recovery boiler. Further, the Rankine cycle system includes a second expander and a third expander coupled to at least one electric generator. The waste heat recovery system also includes a condenser configured to receive the working fluid at low pressure from the first expander, the second expander and the third expander for cooling and a pump connected to the condenser for receiving a cooled and condensed flow of the working fluid from the condenser.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Sebastian Walter Freund
  • Publication number: 20130133868
    Abstract: Systems and methods include heat exchangers using Organic Rankine Cycle (ORC) fluids in power generation systems. A system for power generation using an ORC comprises: a heat exchanger configured to be mounted entirely inside a duct, the heat exchanger comprising a single inlet which traverses from an outer side of the duct to an inner side of the duct, a single outlet which traverses from the inner side of the duct to the outer side of the duct, and a conduit connecting the single inlet to the single outlet, the conduit being provided entirely inside the duct.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 30, 2013
    Inventors: Matthew Alexander Lehar, Sebastian Walter Freund, Giulio De Simon, Giacomo Seghi
  • Publication number: 20130098030
    Abstract: A system for recovering heat from recirculating exhaust gases is provided. The system includes a first exhaust manifold in fluid communication with multiple combustion chambers of an engine. The system also includes a turbocharger having a turbine stage and a compressor stage, wherein the turbine stage comprises an inlet port in fluid communication with the first exhaust manifold and the compressor stage includes an inlet port for air intake and an outlet port for compressed air. The system includes an exhaust gas recirculation cooler having a first flow path and a second flow path, wherein the first flow path is configured to receive a portion of exhaust gas from the first exhaust manifold flowing through an exhaust gas recirculation loop. The second flow path includes an inlet for receiving a compressed air for drawing heat from the exhaust gas flowing through the first flow path.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 25, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian Walter Freund, Jassin Marcel Fritz
  • Publication number: 20130031902
    Abstract: Various methods and systems are provided for an engine. In one example, the system includes a two-stage turbocharger which has first turbocharger with a first turbine and a first compressor and a second turbocharger with a second turbine and a second compressor, where the first turbine and the second turbine are arranged in parallel and the first compressor and the second compressor are arranged in series. The system may include a duct coupling turbine inlets of the first and second turbine, and a valve coupled between the duct and the inlet of the first turbine to throttle flow to first turbine.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 7, 2013
    Inventors: Rodrigo Rodriguez Erdmenger, Douglas C. Hofer, Jassin Fritz, Alberto Scotti Del Greco, Georgios Bikas, Mark Stablein, Sebastian Walter Freund, Vittorio Michelassi
  • Patent number: 8347629
    Abstract: A method, system, and apparatus including a compressed air energy storage system that includes an ambient air intake configured to intake a quantity of ambient air for storage in a compressed air storage volume, a compression system having a compression path that is configured to convey air compressed by the compression system through the compression system, a first path configured to convey ambient air to the compression system, a second path proceeding from the compression system to the compressed air storage volume and configured to convey compressed air to the compressed air storage volume, and a dehumidifying system. The dehumidifying system is coupleable to at least one of the first path that proceeds from the ambient air intake to the compression system, the compression path, and the second path. The dehumidifying system includes a dehumidifying component configured to remove moisture from the ambient air and/or the compressed air.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: January 8, 2013
    Assignee: General Electric Company
    Inventors: Matthias Finkenrath, Cristina Botero, Sebastian Walter Freund, Clarissa Sara Katharina Belloni, Miguel Angel Gonzalez Salazar, Stephanie Marie-Noelle Hoffmann, Roland Marquardt, Kurt Peter Moser, Stefan Martin Zunft
  • Publication number: 20130000614
    Abstract: Exhaust gas recirculation (EGR) systems and methods are provided. In one embodiment, a method for controlling an engine includes providing a first EGR gas flow to an intake manifold of the engine by closing a first EGR valve or a second EGR valve and at least partially opening the other of the first EGR valve and the second EGR valve, wherein the first and second EGR valves are respectively positioned in first and second EGR passages respectively coupled between first and second donor cylinder groups and an intake manifold, and providing a second EGR gas flow that is higher than the first EGR gas flow to the intake manifold by fully opening the first EGR valve or the second EGR valve and at least partially opening the other of the first EGR valve and the second EGR valve.
    Type: Application
    Filed: June 29, 2011
    Publication date: January 3, 2013
    Inventors: Sebastian Walter Freund, Jassin Fritz, Georgios Bikas, Sean Jenkins
  • Patent number: 8327641
    Abstract: An electricity generation system is presented. The electricity generation system includes a solar preheater for preheating compressed discharge air, a combustor to receive the heated compressed air from the solar preheater, burn a fuel using the heated compressed air to generate hot burned gas, a first turbine to receive the hot burned gas from the combustor, expand the hot burned gas to generate exhaust gas, a heat recovery steam generator to receive the exhaust gas from the first turbine, generate vapor by heating a condensed fluid using the exhaust gas, a solar evaporator/superheater to receive a heated working fluid from the heat recovery steam generator, generate solar vapor by heating the heated working fluid, and a second turbine to drive a second generator using vapor and the solar vapor.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: December 11, 2012
    Assignee: General Electric Company
    Inventors: Sebastian Walter Freund, Kevin Richard Lang, Pepe Palafox
  • Publication number: 20120305227
    Abstract: The present application provides a fin and tube heat exchanger. The fin and tube heat exchanger may include a number of tubes with a number of substantially spirally wound circular fins positioned on each of the tubes. The tubes may include a first set of tubes including a plurality of tube pairs each including a tube in a first row of tubes and a tube in a second row of tubes of the first set of tubes. The tubes may further include a second set of tubes including a plurality of tube pairs including a tube in a third row of tubes and a tube in a fourth row of tubes of the second set of tubes. The first set of tubes further including a transverse offset position as compared to the second set of tubes.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 6, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian Walter Freund, William Joseph Antel, JR.
  • Publication number: 20120310456
    Abstract: Various methods and systems for an engine driving an electrical power generation system are provided. In one embodiment, an example method for an engine driving an electrical power generation system includes adjusting an engine speed in response to a relationship between oxygen and fuel while maintaining a power transmitted to the electrical power generation system.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 6, 2012
    Inventors: James Robert MISCHLER, Jassin Marcel Fritz, Sebastian Walter Freund
  • 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
  • Publication number: 20120222659
    Abstract: Various methods and systems are provided for operating an exhaust gas recirculation engine having a plurality of exhaust gas donor cylinders and a plurality of non-donor cylinders. One example method includes firing each of the engine cylinders in a cylinder firing order, including firing at least one of the non-donor cylinders between every donor cylinder firing of the engine cycle.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 6, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran
  • 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
  • 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: 20120102996
    Abstract: A power generation system is provided. The system includes a carbon-dioxide waste heat recovery Rankine cycle, integrated with an absorption chiller cycle. The Rankine cycle includes a condenser and a desorber. The condenser of the Rankine cycle is combined with the evaporator of the absorption chiller cycle. The Rankine cycle and the absorption chiller cycle can be integrated at the desorber.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Sebastian Walter Freund
  • Publication number: 20120096927
    Abstract: A method includes detecting a presence of a fouling layer in an exhaust gas recirculation cooler of an internal combustion engine. The flow of a coolant through the exhaust gas recirculation cooler is stopped for a predetermined period of time while the engine exhaust gas flows through the exhaust gas recirculation cooler. The flow of an engine exhaust gas exiting from the exhaust gas recirculation cooler is diverted to at least one of a turbine of a turbocharger, and an exhaust pipe of the internal combustion engine. The fouling layer from the exhaust gas recirculation cooler is expelled along with the engine exhaust gas exiting the exhaust gas recirculation cooler.
    Type: Application
    Filed: October 25, 2010
    Publication date: April 26, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Sebastian Walter Freund
  • 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, G√ľnther Wall
  • 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: 20110127021
    Abstract: A heat exchanging system is provided. The heat exchanging system includes multiple plates wound spirally around a reaction chamber. The multiple plates also form multiple channels that operate as a counter flow recuperator terminating within the reaction chamber.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 2, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Sebastian Walter Freund, Gabriel Rojas Kopeinig