Patents by Inventor Song Hun CHA

Song Hun CHA 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: 11719156
    Abstract: A combined power generation system is provided. The combined power generation system includes a gas turbine configured to combust fuel to generate a rotational force, a heat recovery steam generator (HRSG) configured to heat feedwater using combustion gas discharged from the gas turbine and include a high-pressure section, a medium-pressure section, and a low-pressure section with different pressure levels, a fuel preheater configured to heat the fuel supplied to the gas turbine and include a primary heating part and a secondary heating part, and a high-pressure feedwater supply pipe connected to the high-pressure section to supply high-pressure feedwater to the secondary heating part.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: August 8, 2023
    Assignee: DOOSAN ENERBILITY CO., LTD.
    Inventors: Byoung Gu Bak, Song Hun Cha, Sung Gju Kang, Hong Geun Ha
  • Patent number: 11702964
    Abstract: Disclosed is a hybrid power generation facility.
    Type: Grant
    Filed: December 13, 2020
    Date of Patent: July 18, 2023
    Assignee: DOOSAN ENERBILITY CO., LTD.
    Inventors: Song-Hun Cha, Hyun Soo An, Sung Gju Kang, Young Gun Go, Kyoung Taek Oh, SangPil Jo
  • Publication number: 20230131286
    Abstract: A combined power plant is provided. The combined power plant includes a gas turbine configured to combust fuel to generate a rotating force, a boiler configured to heat water to generate steam, an ammonia decomposition apparatus configured to receive a combustion gas generated in the gas turbine to thermally decompose ammonia to generate a decomposed gas containing hydrogen, nitrogen, and a residual ammonia, a steam turbine configured to generate a rotating force using the steam generated in the boiler, and a decomposed gas supply line configured to supply the decomposed gas generated in the ammonia decomposition apparatus to a combustor of the gas turbine.
    Type: Application
    Filed: January 19, 2022
    Publication date: April 27, 2023
    Inventors: Sung Gju KANG, Hyun Hu KANG, Gwang Soo JANG, Song Hun CHA
  • Patent number: 11572831
    Abstract: Disclosed are a hybrid power generation facility and a control method thereof.
    Type: Grant
    Filed: December 13, 2020
    Date of Patent: February 7, 2023
    Assignee: DOOSAN ENERBILITY CO., LTD.
    Inventors: Song-Hun Cha, Sung Gju Kang, Hyo Jun Kim, Dong Hun Kim, Ki Hyun Lee, Sang Wook Kim
  • Publication number: 20220316395
    Abstract: A combined power generation system is provided. The combined power generation system includes a gas turbine configured to combust fuel to generate a rotational force, a heat recovery steam generator (HRSG) configured to heat feedwater using combustion gas discharged from the gas turbine and include a high-pressure section, a medium-pressure section, and a low-pressure section with different pressure levels, a fuel preheater configured to heat the fuel supplied to the gas turbine and include a primary heating part and a secondary heating part, and a high-pressure feedwater supply pipe connected to the high-pressure section to supply high-pressure feedwater to the secondary heating part.
    Type: Application
    Filed: February 22, 2022
    Publication date: October 6, 2022
    Inventors: Byoung Gu BAK, Song Hun CHA, Sung Gju KANG, Hong Geun HA
  • Patent number: 11391204
    Abstract: Disclosed is a hybrid power generation facility. The hybrid power generation facility includes a gas turbine including a compressor configured to compress air introduced from an outside, a combustor configured to mix the compressed air with fuel and to combust the air and fuel mixture, and a turbine configured to produce power with first combustion gas discharged from the combustor, a boiler including a combustion chamber and configured to burn a mixture of the first combustion gas and air, a first water heat exchanger configured to pass second combustion gas discharged from the boiler and to heat water through heat exchange with the second combustion gas, a water supply device configured to supply water to the first water heat exchanger, a steam turbine through which steam generated in the combustion chamber passes, and a first air preheater configured to pass second combustion gas discharged from the first water heat exchanger and to pass air supplied to the boiler.
    Type: Grant
    Filed: December 13, 2020
    Date of Patent: July 19, 2022
    Inventors: Song-Hun Cha, Sung Gju Kang, Ki Hyun Lee
  • Patent number: 11359518
    Abstract: A combined cycle power plant is capable of improving power output and power generation efficiency by cooling intake air supplied to a gas turbine. The plant includes a gas turbine power generation system, an operating fluid power generation system, and a cooling system. The gas turbine power generation system includes an air compressor for compressing air supplied through an air incoming path, a gas turbine for generating rotary power by burning a mixture of fuel and the air compressed by the air compressor, and a first generator for generating electricity by using the rotary power of the gas turbine. The operating fluid power generation system heats an operating fluid by using combustion gas discharged from the gas turbine and generates electricity using the heated operating fluid. The cooling system cools air supplied from the air compressor by supplying the operating fluid to an upstream side of the air compressor.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: June 14, 2022
    Inventors: Jun Tae Jang, Sang Hyeun Kim, Hwa Chang Sung, Gon Joo Lee, Song Hun Cha
  • Patent number: 11326513
    Abstract: Disclosed is a hybrid power generation facility.
    Type: Grant
    Filed: December 13, 2020
    Date of Patent: May 10, 2022
    Inventors: Song-Hun Cha, Sung Gju Kang, Ki Hyun Lee
  • Publication number: 20220136438
    Abstract: Disclosed are a hybrid power generation facility and a control method thereof.
    Type: Application
    Filed: December 13, 2020
    Publication date: May 5, 2022
    Inventors: Song-Hun Cha, Sung Gju Kang, Hyo Jun Kim, Dong Hun Kim, Ki Hyun Lee, Sang Wook Kim
  • Publication number: 20220136411
    Abstract: Disclosed is a hybrid power generation facility.
    Type: Application
    Filed: December 13, 2020
    Publication date: May 5, 2022
    Inventors: Song-Hun CHA, Hyun Soo AN, Sung Gju KANG, Young Gun GO, Kyoung Taek OH, SangPil JO
  • Publication number: 20220136412
    Abstract: Disclosed is a hybrid power generation facility. The hybrid power generation facility includes a gas turbine including a compressor configured to compress air introduced from an outside, a combustor configured to mix the compressed air with fuel and to combust the air and fuel mixture, and a turbine configured to produce power with first combustion gas discharged from the combustor, a boiler including a combustion chamber and configured to burn a mixture of the first combustion gas and air, a first water heat exchanger configured to pass second combustion gas discharged from the boiler and to heat water through heat exchange with the second combustion gas, a water supply device configured to supply water to the first water heat exchanger, a steam turbine through which steam generated in the combustion chamber passes, and a first air preheater configured to pass second combustion gas discharged from the first water heat exchanger and to pass air supplied to the boiler.
    Type: Application
    Filed: December 13, 2020
    Publication date: May 5, 2022
    Inventors: Song-Hun CHA, Sung Gju KANG, Ki Hyun LEE
  • Publication number: 20220136436
    Abstract: Disclosed is a hybrid power generation facility.
    Type: Application
    Filed: December 13, 2020
    Publication date: May 5, 2022
    Inventors: Song-Hun CHA, Sung Gju Kang, Ki Hyun Lee
  • Patent number: 11136898
    Abstract: Disclosed herein is a sealing gas supply apparatus. In the sealing gas supply apparatus for supplying sealing gas to a turbomachine of a power generation system, a source comprises at least one low-temperature source for supplying a working fluid to the sealing gas supply apparatus and at least one high-temperature source for supplying a working fluid having a higher temperature than the low-temperature source to the sealing gas supply apparatus, and the working fluids are mixed in the sealing gas supply apparatus to be suitable for a sealing condition as a temperature condition required in a sealing system so as to be supplied to the sealing system of the turbomachine. In accordance with the present disclosure, since separate electric power is not consumed during normal operation by improving a turbine sealing gas source, it is possible to enhance power generation performance by a reduction in power consumption.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: October 5, 2021
    Inventor: Song Hun Cha
  • Patent number: 10731515
    Abstract: A hybrid type power generation system in which some of components of a cogeneration system are combined with a supercritical CO2 power generation system, may increase an energy output by combining some of the components of the cogeneration system with the supercritical CO2 power generation system.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: August 4, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd.
    Inventor: Song Hun Cha
  • Patent number: 10648370
    Abstract: Disclosed are a power plant that uses a synchronous generator using a working fluid for generation of electric power, and a method of controlling the power plant, the power plant and the control method having an advantage of preventing damage to the power plant during synchronization with an electrical grid. The power plant comprises a pump for compressing a working fluid, a heat exchanger for heat transfer from an external heat source to the working fluid transferred from the pump, and a power turbine generator for generating a rotational force by using the working fluid heated by the heat exchanger, generating electricity using the rotational force, and supplying the electricity to an electrical grid.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: May 12, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Hwa Chang Sung, Sang Hyeun Kim, Song Hun Cha
  • Patent number: 10641132
    Abstract: A supercritical CO2 power generating system prevents cold-end corrosion capable of improving reliability against cold-end corrosion by including a recirculation pump. Part of the working fluid heated in the low-temperature-side external heat exchanger using the recirculation pump is mixed with the low-temperature working fluid at the rear end of the pump, to heat the working fluid above the temperature of the dewpoint of the waste heat gas. The heated working fluid is then supplied to the external heat exchanger. By reducing the cold-end corrosion phenomenon of the low-temperature-side external heat exchanger, the life of the external heat exchanger can be increased and the reliability of the external heat exchanger and the supercritical CO2 power generating system can be improved.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: May 5, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Song Hun Cha
  • Patent number: 10605124
    Abstract: The present disclosure relates to a hybrid power generating system comprising a power generating system using supercritical CO2 configured to use the supercritical CO2 as a working fluid and a liquefied natural gas (LNG) treatment system configured to vaporize LNG, where the working fluid is cooled in at least one of the power generating system using supercritical CO2 and the LNG treatment system and is re-circulated to the power generating system using supercritical CO2.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 31, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Song Hun Cha
  • Patent number: 10400636
    Abstract: A supercritical CO2 generation system using plural heat sources, includes: a pump configured to circulate a working fluid; heat exchangers configured to heat the working fluid using an external heat source; turbines configured to be driven by the working fluid heated by passing through the heat exchanger; and recuperators configured to exchange heat between the working fluid passing through the turbine and the working fluid passing through the pump to cool the working fluid passing through the turbine, in which the heat exchanger includes constrained heat exchangers having an emission regulation condition of an outlet end and heat exchangers without the emission regulation condition.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: September 3, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Hak Soo Kim, Song Hun Cha, Sang Hyeun Kim, Jun Tae Jang
  • Patent number: 10344626
    Abstract: Disclosed herein is a hybrid power generation system. The hybrid power generation system may enhance efficiency of production of electricity and heating heat by integrating power generation using supercritical carbon dioxide (CO2) and cogeneration.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 9, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Song Hun Cha, Hak Soo Kim
  • Patent number: 10287926
    Abstract: Disclosed herein is a supercritical CO2 generation system using plural heat sources, including: a pump configured to circulate a working fluid; plural heat exchangers configured to heat the working fluid using an external heat source; plural turbines configured to be driven by the working fluid heated by passing through the heat exchanger; and plural recuperators configured to exchange heat between the working fluid passing through the turbine and the working fluid passing through the pump to cool the working fluid passing through the turbine and heat the working fluid passing through the pump, in which the heat exchanger may include plural constrained heat exchangers having an emission regulation condition of an outlet end and plural heat exchangers without the emission regulation condition.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: May 14, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Hak Soo Kim, Sang Hyeun Kim, Jun Tae Jang, Song Hun Cha