Patents by Inventor Osamu Yokomizo

Osamu Yokomizo 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: 6854259
    Abstract: Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine. A fine water droplet spraying apparatus (11) is disposed in a suction air chamber (22) on the upstream side of an air compressor (2), and a moisture adding apparatus (7) for adding moisture to high pressure air supplied from the compressor (2) is disposed. A regenerator (5) for heating the air to which moisture has been added by using gas turbine exhaust gas as a heat source is also provided. With this configuration, there can be obtain an effect of reducing a power for the compressor (2) and an effect of increasing the output power due to addition of moisture to air (20) for combustion. Further, since the used amount of fuel is reduced by adopting a regenerating cycle, the power generating efficiency is improved.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: February 15, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Publication number: 20050011180
    Abstract: Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine. A fine water droplet spraying apparatus (11) is disposed in a suction air chamber (22) on the upstream side of an air compressor (2), and a moisture adding apparatus (7) for adding moisture to high pressure air supplied from the compressor (2) is disposed. A regenerator (5) for heating the air to which moisture has been added by using gas turbine exhaust gas as a heat source is also provided. With this configuration, there can be obtain an effect of reducing a power for the compressor (2) and an effect of increasing the output power due to addition of moisture to air (20) for combustion. Further, since the used amount of fuel is reduced by adopting a regenerating cycle, the power generating efficiency is improved.
    Type: Application
    Filed: August 13, 2004
    Publication date: January 20, 2005
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Publication number: 20040212194
    Abstract: During a time zone where a power demand is smaller than an average value of the entire power demands of homes, an excess portion obtained by subtracting a power demand from a base power portion supplied by PEFC (1) is charged in a capacitor (7) and a lead storage battery (8) in advance; and during a time zone where a power demand is larger than the average value, a peak power portion exceeding this average value is discharged from the capacitor (7) and the lead storage battery (8); thereby enabling the system to sufficiently meet daily home-use demand with requisite minimum equipment while effectively using surplus power. Thus, energy efficiency can be enhanced without wasting energy, and also cost efficiency can be improved.
    Type: Application
    Filed: April 7, 2004
    Publication date: October 28, 2004
    Inventors: Tsutomu Okusawa, Osamu Yokomizo, Toshiki Kahara, Kouichi Chino, Takaaki Mizukami, Shin Takahashi
  • Publication number: 20040060277
    Abstract: The present invention relates to an air humidifier for adding moisture to a working medium of a gas turbine for humidification, and gas turbine electric power generation equipment for driving the gas turbine by the working medium of high moisture to general electricity. An object of the present invention is to reduce pressure loss of burned exhaust gas of the gas turbine to improve output or efficiency of electric power generation. There comprises a humidifier (3), a combustor (5), a turbine (6), a generator (7), and a water recovery unit (10), further comprises an exhaust gas reheater (11) for heating burned exhaust gas discharged from the water recovery unit by surplus water discharged from the humidifier.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 1, 2004
    Applicant: HITACHI, LTD.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo
  • Publication number: 20040060276
    Abstract: Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 1, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Patent number: 6644013
    Abstract: The present invention relates to an air humidifier for adding moisture to a working medium of a gas turbine for humidification, and gas turbine electric power generation equipment for driving the gas turbine by the working medium of high moisture to generate electricity. An object of the present invention is to reduce pressure loss of burned exhaust gas of the gas turbine to improve output or efficiency of electric power generation. The invention comprises a humidifier (3), a combustor (5), a turbine (6), a generator (7), and a water recovery unit (10), and further comprises an exhaust gas reheater (11) for heating burned exhaust gas discharged from the water recovery unit by surplus water discharged from the humidifier.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: November 11, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo
  • Patent number: 6637185
    Abstract: Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine. A fine water droplet spraying apparatus (11) is disposed in a suction air chamber (22) on the upstream side of an air compressor (2), and a moisture adding apparatus (7) for adding moisture to high pressure air supplied from the compressor (2) is included. A regenerator (5) for heating the air to which moisture has been added by using gas turbine exhaust gas as a heat source is also provided. With this configuration, there can be obtain an effect of reducing a power for the compressor (2) and an effect of increasing the output power due to addition of moisture to air (20) for combustion. Further, since the amount of fuel used is reduced by adopting a regenerating cycle, the power generating efficiency is improved.
    Type: Grant
    Filed: March 11, 2003
    Date of Patent: October 28, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Publication number: 20030163982
    Abstract: Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine.
    Type: Application
    Filed: March 11, 2003
    Publication date: September 4, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Patent number: 6578354
    Abstract: The present invention relates to an air humidifier for adding moisture to a working medium of a gas turbine for humidification, and gas turbine electric power generation equipment for driving the gas turbine by the working medium of high moisture to general electricity. An object of the present invention is to reduce pressure loss of burned exhaust gas of the gas turbine to improve output or efficiency of electric power generation. There comprises a humidifier (3), a combustor (5), a turbine (6), a generator (7), and a water recovery unit (10), further comprises an exhaust gas reheater (11) for heating burned exhaust gas discharged from the water recovery unit by surplus water discharged from the humidifier.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: June 17, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo
  • 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
  • Patent number: 6560957
    Abstract: Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and little change in design of a gas turbine. A fine water droplet spraying apparatus (11) is disposed in a suction air chamber (22) on the upstream side of an air compressor (2), and a moisture adding apparatus (7) for adding moisture to high pressure air supplied from the compressor (2) is included. A regenerator (5) for heating the air to which moisture has been added by using gas turbine exhaust gas as a heat source is also provided. With this configuration, there can be obtained an effect of reducing power for the compressor (2) and an effect of increasing the output power due to addition of moisture to air (20) for combustion. Further, since the amount of fuel used is reduced by adopting a regenerating cycle, the power generating efficiency is improved.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: May 13, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Publication number: 20030070415
    Abstract: The present invention relates to an air humidifier for adding moisture to a working medium of a gas turbine for humidification, and gas turbine electric power generation equipment for driving the gas turbine by the working medium of high moisture to general electricity. An object of the present invention is to reduce pressure loss of burned exhaust gas of the gas turbine to improve output or efficiency of electric power generation. There comprises a humidifier (3), a combustor (5), a turbine (6), a generator (7), and a water recovery unit (10), further comprises an exhaust gas reheater (11) for heating burned exhaust gas discharged from the water recovery unit by surplus water discharged from the humidifier.
    Type: Application
    Filed: November 22, 2002
    Publication date: April 17, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo
  • Publication number: 20030020178
    Abstract: An IC chip bonding sheet having adhesive resin layers formed on both faces of a porous polytetrafluoroethylene layer comprising a porous polytetrafluoroethylene sheet, the porous polytetrafluoroethylene layer retaining porous voids, and the adhesive resin layers comprising a bromine-free flame retardant resin composition.
    Type: Application
    Filed: June 19, 2002
    Publication date: January 30, 2003
    Inventors: Kazuhiko Ohashi, Osamu Yokomizo, Koji Yoshida
  • Patent number: 6487508
    Abstract: An energy supply system includes at least two devices selected from a device for generating electric power, a device for heating a heat conveying medium to an atmospheric temperature or higher and a device for cooling a heat conveying medium to the atmospheric temperature or lower; a device for supplying at least two selected from electric power, heat of atmospheric temperature or higher and cold of atmospheric temperature or lower to a plurality of customers; a device for measuring supply quantities of electric power, heat and cold, supplied to the plurality of customers; a device for calculating usage charges for electric power, heat and cold, consumed by each of the customers on the basis of the supply quantities; and a device for settling the usage charges. One enterprise entity manages these activities.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: November 26, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Hiroaki Suzuki, Osamu Yokomizo, Tetsuo Horiuchi, Naoyuki Yamada, Mamoru Morita
  • Publication number: 20020100813
    Abstract: In a system for supplying a heat by a heat medium, a heat discharged from a customer requiring only a high temperature heat is effectively utilized, and respective prices paid by the customer requiring only the high temperature heat and a customer requiring only a low temperature heat are reduced. In this system, a heat medium discharged by the customer requiring only the high temperature heat is recovered so as to be fed to the customer requiring only the low temperature heat.
    Type: Application
    Filed: August 21, 2001
    Publication date: August 1, 2002
    Inventor: Osamu Yokomizo
  • Publication number: 20020092286
    Abstract: Disclosed is a gas turbine power generating system capable of achieving a high output power and a high power generating efficiency under conditions with a small amount of supplied water and less change in design of a gas turbine.
    Type: Application
    Filed: March 13, 2002
    Publication date: July 18, 2002
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Patent number: 6415986
    Abstract: In a system for supplying a heat by a heat medium, a heat discharged from a customer requiring only a high temperature heat is effectively utilized, and respective prices paid by the customer requiring only the high temperature heat and a customer requiring only a low temperature heat are reduced. In this system, a heat medium discharged by the customer requiring only the high temperature heat is recovered so as to be fed to the customer requiring only the low temperature heat.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: July 9, 2002
    Assignee: Hitachi, Ltd.
    Inventor: Osamu Yokomizo
  • Patent number: 6389799
    Abstract: A gas turbine installation includes an air compressor, a combustor for burning fuel together with air discharged from the compressor, and a turbine driven by combustion gas generated by the combustor. The installation includes a spraying apparatus disposed in a suction air chamber on the upstream side of the air compressor and a water adding apparatus for adding moisture to high pressure air supplied from the compressor and which is disposed between the air compressor and the combustor. A heat exchanger is provided between the water adding apparatus and the combustor for heating air prior to the air entering the combustor.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: May 21, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Shigeo Hatamiya, Masahiko Yamagishi, Osamu Yokomizo, Yoshiki Noguchi, Moriaki Tsukamoto
  • Patent number: 6278757
    Abstract: A resistance member (e.g., fuel holding portion of the lower tie plate) is provided at the lower end of the fuel assembly. Provision is made of a coolant ascending path in which said water rods have coolant inlet ports that are open in a region lower than the resistance member to upwardly guide the coolant, and a coolant descending path which has a coolant delivery port that is open in a region higher than the resistance member to downwardly guide the coolant. The coolant ascending path and the coolant descending path are communicated with each other at their upper end portions.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: August 21, 2001
    Assignee: Hitachi, LTD
    Inventors: Osamu Yokomizo, Yuichiro Yoshimoto, Yoshiyuki Kataoka, Shinichi Kashiwai, Yasuhiro Masuhara, Akio Tomiyama, Akihito Orii, Kotaro Inoue, Takaaki Mochida, Tatsuo Hayashi
  • 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