Patents by Inventor Motoaki Utamura

Motoaki Utamura 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: 8359861
    Abstract: A sunlight collecting system and a solar energy utilization system which collects sunlight with the sunlight collecting system are provided, a sunlight collecting system including a solar heat collector which includes a heat collecting element which is formed by a helically wound heat exchange medium circulation pipe inside which the heat exchange medium flows, in such a way to have an incurved light receiving surface which narrows and converges towards the sunlight inlet and a sunlight collecting reflector which includes a reflector group which includes a plurality of reflector segments each of which includes a reflecting surface which makes sunlight converge on a heat collector, a sunlight collecting system in which a plurality of heliostats Bm are arranged in places which are irradiated by the sunlight between a plurality of heliostats An, in which each of the heliostats An and the heliostats Bm reflect light in a direction to a light collecting point of a heliostat group in which the heliostat is included
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: January 29, 2013
    Assignee: Tokyo Institute of Technology
    Inventors: Yutaka Tamaura, Yoshio Yoshizawa, Motoaki Utamura, Hiroshi Hasuike, Hideyuki Ishihara, Tadahiko Takamatsu
  • Publication number: 20090173337
    Abstract: A sunlight collecting system and a solar energy utilization system which collects sunlight with the sunlight collecting system are provided, a sunlight collecting system including a solar heat collector which includes a heat collecting element which is formed by a helically wound heat exchange medium circulation pipe inside which the heat exchange medium flows, in such a way to have an incurved light receiving surface which narrows and converges towards the sunlight inlet and a sunlight collecting reflector which includes a reflector group which includes a plurality of reflector segments each of which includes a reflecting surface which makes sunlight converge on a heat collector, a sunlight collecting system in which a plurality of heliostats Bm are arranged in places which are irradiated by the sunlight between a plurality of heliostats An, in which each of the heliostats An and the heliostats Bm reflect light in a direction to a light collecting point of a heliostat group in which the heliostat is included
    Type: Application
    Filed: August 31, 2005
    Publication date: July 9, 2009
    Inventors: Yutaka Tamaura, Yoshio Yoshizawa, Motoaki Utamura, Hiroshi Hasuike, Hideyuki Ishihara, Tadahiko Takamatsu
  • Patent number: 7441399
    Abstract: A gas turbine, a combined cycle plant and compressor by which both augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with simple equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing through the compressor.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: October 28, 2008
    Assignee: Hitachi, Ltd.
    Inventor: Motoaki Utamura
  • Patent number: 7404287
    Abstract: A gas turbine, a combined cycle plant and compressor by which both augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with simple equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing through the compressor.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: July 29, 2008
    Assignee: Hitachi, Ltd.
    Inventor: Motoaki Utamura
  • Publication number: 20070022734
    Abstract: A gas turbine, a combined cycle plant and compressor by which both augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with simple equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing through the compressor.
    Type: Application
    Filed: April 5, 2006
    Publication date: February 1, 2007
    Inventor: Motoaki Utamura
  • Patent number: 7040083
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: May 9, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Publication number: 20040255596
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Application
    Filed: July 22, 2004
    Publication date: December 23, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: 6779332
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: August 24, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Publication number: 20040093850
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and an injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas. to be introduced into the compressor than the atmospheric temperature, and causing water droppers having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 20, 2004
    Applicant: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: 6711888
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: March 30, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: 6705074
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: March 16, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Publication number: 20030196439
    Abstract: The invention provides a gas turbine, a combined plant and a compressor by which both of augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with a single equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing down in the compressor.
    Type: Application
    Filed: May 23, 2003
    Publication date: October 23, 2003
    Applicant: Hitachi, Ltd.
    Inventor: Motoaki Utamura
  • Patent number: 6609360
    Abstract: A gas turbine, a combined cycle plant and compressor by which both augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with simple equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing through the compressor.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: August 26, 2003
    Assignee: Hitachi, Ltd.
    Inventor: Motoaki Utamura
  • Patent number: 6598401
    Abstract: A gas turbine, a combined cycle plant and compressor by which both augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with simple equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing through the compressor.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: July 29, 2003
    Assignee: Hitachi, Ltd.
    Inventor: Motoaki Utamura
  • Patent number: 6598402
    Abstract: An exhaust gas recirculation type gas turbine apparatus includes a compressor for compressing air, a combustion chamber for burning fuel and compression air exhausted from the compressor, a gas turbine driven by exhaust gas from the combustion chamber, a recirculation path for recirculating a part of the exhaust gas to an intake of the compressor, a recirculation amount control unit for adjusting the amount of exhaust gas to be returned to the intake of the compressor corresponding to a change in load of the gas turbine, and a spray unit for introducing liquid droplets into the interior of the compressor in which mixing gas, consisting of gas turbine exhaust gas passing through the recirculation path and air, flows so as to vaporize the introduced liquid droplets appearing to flow in the compressor.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: July 29, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masaki Kataoka, Motoaki Utamura, Takaaki Kuwahara
  • Patent number: 6581368
    Abstract: A gas turbine, a combined cycle plant and compressor by which both augmentation of the power output and augmentation of the thermal efficiency can be realized by injecting liquid droplets into inlet air introduced into an entrance of a compressor with simple equipment which is suitable for practical use. The gas turbine includes a compressor for taking in and compressing gas, a combustor in which fuel is combusted with the gas discharged from the compressor, and a turbine driven by the combusted gas of the combustor. The gas turbine further includes a liquid droplet injection device provided on the upstream side of the compressor for injecting liquid droplets into inlet air to be supplied into the entrance of the compressor to lower the temperature of the inlet air to be introduced into the compressor so that the injected liquid droplets may be evaporated while flowing through the compressor.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: June 24, 2003
    Assignee: Hitachi, Ltd.
    Inventor: Motoaki Utamura
  • Patent number: 6568167
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: 6568168
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: May 27, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: RE38831
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: October 18, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh
  • Patent number: RE39092
    Abstract: A gas turbine comprises a compressor for compressing a gas supplied therein and discharging the compressed gas, a combustor in which the discharged gas from the compressor and a fuel are combusted, a turbine to be driven by a combustion gas from the combustor, and a water injection unit which injects water into the gas to be supplied to the compressor, thereby lowering the temperature of the gas to be introduced into the compressor to a temperature lower than the atmospheric temperature, and causing water droplets having been injected in the gas and within the compressor to be vaporized while flowing down therein, wherein the quantity of water spray injection is controlled while monitoring operational conditions of the gas turbine.
    Type: Grant
    Filed: November 17, 2004
    Date of Patent: May 9, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Nobuyuki Horii, Isao Takehara, Hidetaro Murata, Motoaki Utamura, Takaaki Kuwahara, Tetsuo Sasada, Fumiyuki Hirose, Yasuhiro Katoh