Patents by Inventor Harumi Wakana

Harumi Wakana 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).

  • Cold heat reused air liquefaction/vaporization and storage gas turbine electric power system
    Patent number: 6920759
    Abstract: An energy storage gas-turbine electric power generating system includes a liquid air storage tank for storing liquid air, a vaporizing facility for vaporizing the liquid air stored in the liquid air storage tank, a combustor for generating a combusted gas by combusting the air vaporized by the vaporizing facility and a fuel, a gas turbine driven by the combusted gas generated in the combustor, and a gas-turbine generator connected to the gas turbine for generating electric power. The system further includes a pressurizing unit for pressurizing the liquid air stored in the liquid air storage tank up to a pressure higher than a pressure of air supplied to the combustor to supply the liquid air to the vaporizing facility, an expansion turbine driven by expanding the air vaporized by the vaporizing facility and an expansion-turbine generator connected to the expansion turbine for generating electric power.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: July 26, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Harumi Wakana, Koichi Chino, Osamu Yokomizo
  • Cold heat reused air liquefaction/ vaporization and storage gas turbine electric power system
    Publication number: 20030101728
    Abstract: An energy storage gas-turbine electric power generating system includes a liquid air storage tank for storing liquid air, a vaporizing facility for vaporizing the liquid air stored in the liquid air storage tank, a combustor for generating a combusted gas by combusting the air vaporized by the vaporizing facility and a fuel, a gas turbine driven by the combusted gas generated in the combustor, and a gas-turbine generator connected to the gas turbine for generating electric power. The system further includes a pressurizing unit for pressurizing the liquid air stored in the liquid air storage tank up to a pressure higher than a pressure of air supplied to the combustor to supply the liquid air to the vaporizing facility, an expansion turbine driven by expanding the air vaporized by the vaporizing facility and an expansion-turbine generator connected to the expansion turbine for generating electric power.
    Type: Application
    Filed: June 28, 2002
    Publication date: June 5, 2003
    Inventors: Harumi Wakana, Koichi Chino, Osamu Yokomizo
  • Cold heat-reused air liquefaction/vaporization and storage gas turbine electric power system
    Publication number: 20010004830
    Abstract: An energy storage gas-turbine electric power generating system comprises a liquid air storage tank for storing liquid air, a vaporizing facility for vaporizing the liquid air stored in the liquid air storage tank, a combustor for generating a combusted gas by combusting the air vaporized by the vaporizing facility and a fuel, a gas turbine driven by the combusted gas generated in the combustor, and a gas-turbine generator connected to the gas turbine for generating electric power, which further comprises a pressurizing unit for pressurizing the liquid air stored in the liquid air storage tank up to a pressure higher than a pressure of air supplied to the combustor to supply the liquid air to the vaporizing facility, and an expansion turbine driven by expanding the air vaporized by the vaporizing facility and an expansion-turbine generator connected to the expansion turbine for generating electric power.
    Type: Application
    Filed: January 22, 2001
    Publication date: June 28, 2001
    Applicant: Hitachi, Ltd.
    Inventors: Harumi Wakana, Koichi Chino, Osamu Yokomizo