Patents by Inventor Sang Hyeun KIM
Sang Hyeun KIM 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: 11359518Abstract: 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: GrantFiled: May 17, 2018Date of Patent: June 14, 2022Inventors: Jun Tae Jang, Sang Hyeun Kim, Hwa Chang Sung, Gon Joo Lee, Song Hun Cha
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Patent number: 10648370Abstract: 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: GrantFiled: June 21, 2018Date of Patent: May 12, 2020Assignee: Doosan Heavy Industries Construction Co., LtdInventors: Hwa Chang Sung, Sang Hyeun Kim, Song Hun Cha
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Patent number: 10400636Abstract: 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: GrantFiled: October 14, 2016Date of Patent: September 3, 2019Assignee: Doosan Heavy Industries Construction Co., LtdInventors: Hak Soo Kim, Song Hun Cha, Sang Hyeun Kim, Jun Tae Jang
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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: 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: 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