Patents by Inventor Sebastian Rehfeldt

Sebastian Rehfeldt 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: 10309644
    Abstract: One embodiment relates to a burner, comprising a fuel pipe, a fuel nozzle, at least one ignition and/or heat source and a pipe which conducts an oxygen-containing gas and/or recirculated flue gas, wherein the at least one ignition and/or heat source is arranged in the burner interior and is in the form of or comprises an electric heating and/or ignition device via which, exclusively by conversion of electrical current into heat energy, the amount of heat energy required within the burner for the initiation and continuation of the initial pyrolysis and ignition is generated and/or provided in the burner interior. A stabilizing ring with toothed ring may be a constituent part of the electric heating and/or ignition device arranged in the mouth region of the fuel nozzle.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: June 4, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS EUROPE GMBH
    Inventors: Alfons Leisse, Sebastian Rehfeldt
  • Patent number: 10177629
    Abstract: A method for producing electrical energy in a combined energy generation plant which comprises an air treatment unit and a power station unit is proposed. In a first operating mode, air is liquefied to form an air liquefaction product and, in a second operating mode, an air liquefaction product is converted into a gaseous or supercritical state, in which said product is introduced into the power station unit and is used for producing electrical energy. In a third operating mode, air is condensed in the air treatment unit and used in the power station unit directly for producing electrical energy. It is envisaged that, in the first operating mode, the air is cooled to several temperature levels by two liquid coolants and the air liquefaction product is correspondingly heated. In addition, in the first operating mode, the air is condensed stepwise over several pressure levels.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: January 8, 2019
    Assignee: Mitsubishi Hitachi Power Systems Europe GMBH
    Inventors: Christoph Stiller, Sebastian Rehfeldt, Brian Stöver, Alexander Alekseev
  • Publication number: 20160238239
    Abstract: One embodiment relates to a burner, comprising a fuel pipe, a fuel nozzle, at least one ignition and/or heat source and a pipe which conducts an oxygen-containing gas and/or recirculated flue gas, wherein the at least one ignition and/or heat source is arranged in the burner interior and is in the form of or comprises an electric heating and/or ignition device via which, exclusively by conversion of electrical current into heat energy, the amount of heat energy required within the burner for the initiation and continuation of the initial pyrolysis and ignition is generated and/or provided in the burner interior. A stabilizing ring with toothed ring may be a constituent part of the electric heating and/or ignition device arranged in the mouth region of the fuel nozzle.
    Type: Application
    Filed: October 2, 2014
    Publication date: August 18, 2016
    Inventors: Alfons Leisse, Sebastian Rehfeldt
  • Publication number: 20160190896
    Abstract: A method for producing electrical energy in a combined energy generation plant which comprises an air treatment unit and a power station unit is proposed. In a first operating mode, air is liquefied to form an air liquefaction product (LAIR) and, in a second operating mode, an air liquefaction product is converted into a gaseous or supercritical state, in which said product is introduced into the power station unit and is used for producing electrical energy. In a third operating mode, air is condensed in the air treatment unit and used in the power station unit directly for producing electrical energy. It is envisaged that, in the first operating mode, the air is cooled to severa temperature levels by two liquid coolants and the air liquefaction product is correspondingy heated. In addition, in the first operating mode, the air is condensed stepwise over several pressure levels.
    Type: Application
    Filed: July 29, 2014
    Publication date: June 30, 2016
    Inventors: Christoph Stiller, Sebastian Rehfeldt, Brian Stöver, Alexander Alekseev