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).
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Patent number: 10287926Abstract: 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: GrantFiled: October 20, 2016Date of Patent: May 14, 2019Assignee: Doosan Heavy Industries Construction Co., LtdInventors: Hak Soo Kim, Sang Hyeun Kim, Jun Tae Jang, Song Hun Cha
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Patent number: 10273832Abstract: Disclosed herein is a supercritical carbon dioxide power generation system utilizing a plurality of heat sources, comprising: a pump for circulating a working fluid; a plurality of heat exchangers for heating the working fluid through an external heat source; a plurality of turbines driven by the working fluid heated through the heat exchangers; and a plurality of recuperators that allow the working fluid passed through the turbines and the working fluid passed through the pump to heat exchange with each other to cool the working fluid passed through the turbine, wherein the plurality of heat exchangers are sequentially disposed from a high temperature region at an inlet end into which waste heat gas stream is introduced up to a low temperature region at an outlet end through which the waste heat gas stream is discharged via a mediate temperature region.Type: GrantFiled: January 17, 2017Date of Patent: April 30, 2019Assignee: Doosan Heavy Industries Construction Co., LtdInventors: Song Hun Cha, Hak Soo Kim, Sang Hyeun Kim, Jun Tae Jang
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Publication number: 20190048746Abstract: 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: ApplicationFiled: June 21, 2018Publication date: February 14, 2019Inventors: Hwa Chang SUNG, Sang Hyeun KIM, Song Hun CHA
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Patent number: 10202873Abstract: The present invention relates to a supercritical CO2 generation system applying plural heat sources. According to the present invention, each heat exchanger is effectively disposed according to conditions such as an inlet and outlet temperature, capacity, the number, etc. of the heat source, such that it is possible to use the same or smaller number of recuperators as compared to the number of heat sources, thereby simplifying the system configuration and implementing effective operation.Type: GrantFiled: February 13, 2017Date of Patent: February 12, 2019Assignee: Doosan Heavy Industries & Construction Co., Ltd.Inventors: Hak Soo Kim, Song Hun Cha, Sang Hyeun Kim, Jun Tae Jang
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Patent number: 10202874Abstract: The present invention relates to the supercritical CO2 generation system applying plural heat sources. The supercritical CO2 generation system applying plural heat sources includes a pump circulating a working fluid; a plurality of heat exchangers heating the working fluid using an external heat source and including a plurality of constrained heat sources having an emission regulation condition of an outlet end thereof and a plurality of general heat sources without the emission regulation condition; a plurality of turbines operated by the working fluid heated by passing through the heat exchangers; and a plurality of recuperators cooling the working fluid passing through the turbines by heat exchange between the working fluid passing through the turbines and the working fluid passing through the pump, wherein the working fluid passing through the turbine is branched into the recuperators, respectively.Type: GrantFiled: February 13, 2017Date of Patent: February 12, 2019Assignee: Doosan Heavy Industries & Construction Co., Ltd.Inventors: Hak Soo Kim, Song Hun Cha, Sang Hyeun Kim, Jun Tae Jang
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Publication number: 20190024540Abstract: 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: ApplicationFiled: June 19, 2018Publication date: January 24, 2019Inventor: Song Hun Cha
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Publication number: 20190017417Abstract: 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: ApplicationFiled: July 9, 2018Publication date: January 17, 2019Inventor: Song Hun Cha
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Publication number: 20180340453Abstract: 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: ApplicationFiled: May 17, 2018Publication date: November 29, 2018Inventors: Jun Tae JANG, Sang Hyeun KIM, Hwa Chang SUNG, Gon Joo LEE, Song Hun CHA
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Publication number: 20180266566Abstract: 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: ApplicationFiled: March 19, 2018Publication date: September 20, 2018Inventor: Song Hun Cha
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Publication number: 20180094547Abstract: 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: ApplicationFiled: October 2, 2017Publication date: April 5, 2018Inventors: Song Hun CHA, Hak Soo KIM
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Publication number: 20180087408Abstract: 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: ApplicationFiled: September 22, 2017Publication date: March 29, 2018Inventor: Song Hun Cha
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Publication number: 20170234169Abstract: The present invention relates to a supercritical CO2 generation system applying plural heat sources. According to the present invention, each heat exchanger is effectively disposed according to conditions such as an inlet and outlet temperature, capacity, the number, etc. of the heat source, such that it is possible to use the same or smaller number of recuperators as compared to the number of heat sources, thereby simplifying the system configuration and implementing effective operation.Type: ApplicationFiled: February 13, 2017Publication date: August 17, 2017Inventors: Hak Soo Kim, Song Hun Cha, Sang Hyeun Kim, Jun Tae Jang
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Publication number: 20170234170Abstract: The present invention relates to the supercritical CO2 generation system applying plural heat sources. The supercritical CO2 generation system applying plural heat sources includes a pump circulating a working fluid; a plurality of heat exchangers heating the working fluid using an external heat source and including a plurality of constrained heat sources having an emission regulation condition of an outlet end thereof and a plurality of general heat sources without the emission regulation condition; a plurality of turbines operated by the working fluid heated by passing through the heat exchangers; and a plurality of recuperators cooling the working fluid passing through the turbines by heat exchange between the working fluid passing through the turbines and the working fluid passing through the pump, wherein the working fluid passing through the turbine is branched into the recuperators, respectively.Type: ApplicationFiled: February 13, 2017Publication date: August 17, 2017Inventors: Hak Soo Kim, Song Hun Cha, Sang Hyeun Kim, Jun Tae Jang
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Publication number: 20170204747Abstract: Disclosed herein is a supercritical carbon dioxide power generation system utilizing a plurality of heat sources, comprising: a pump for circulating a working fluid; a plurality of heat exchangers for heating the working fluid through an external heat source; a plurality of turbines driven by the working fluid heated through the heat exchangers; and a plurality of recuperators that allow the working fluid passed through the turbines and the working fluid passed through the pump to heat exchange with each other to cool the working fluid passed through the turbine, wherein the plurality of heat exchangers are sequentially disposed from a high temperature region at an inlet end into which waste heat gas stream is introduced up to a low temperature region at an outlet end through which the waste heat gas stream is discharged via a mediate temperature region.Type: ApplicationFiled: January 17, 2017Publication date: July 20, 2017Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.Inventors: Song Hun CHA, Hak Soo KIM, Sang Hyeun KIM, Jun Tae JANG
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Publication number: 20170114673Abstract: 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: ApplicationFiled: October 20, 2016Publication date: April 27, 2017Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.Inventors: Hak Soo KIM, Sang Hyeun KIM, Jun Tae JANG, Song Hun CHA
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Publication number: 20170107860Abstract: 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: ApplicationFiled: October 14, 2016Publication date: April 20, 2017Applicant: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.Inventors: Hak Soo KIM, Song Hun CHA, Sang Hyeun KIM, Jun Tae JANG