Patents by Inventor Young Jin Baik

Young Jin Baik 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).

  • Publication number: 20220128260
    Abstract: The cooling system according to the present invention may dehumidify and cool the indoor air by using the ejector, the ejector membrane, the evaporation chamber, and the indoor dehumidifying membrane. In addition, the coefficient of performance of the cooling system may be improved by cooling the refrigerant using evaporation latent heat generated in the evaporation chamber by the suction force of the ejector and cooling the indoor air using the refrigerant. In addition, by using solar heat to generate high-temperature and high-pressure steam and supply the generated steam to the ejector, energy use efficiency may be improved. In addition, since the temperature of the steam generated in the steam generating portion may be lowered by arranging and using the two first and second ejectors in multiple stages, energy efficiency may be further improved by reducing the consumption of the heat source required for steam generation.
    Type: Application
    Filed: October 25, 2021
    Publication date: April 28, 2022
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Beom Joon LEE, Gil-bong LEE, Chulwoo ROH, Young-jin BAIK, Hyung-ki SHIN, Jong Jae CHO
  • Patent number: 11306912
    Abstract: In the present invention, a recuperator is used in a refrigerant cycle to make a heat exchange between a refrigerant generated in a condenser and a refrigerant before flowing into a compressor, thereby supercooling the refrigerant to minimize the quality of the refrigerant introduced into an evaporator, elevating temperatures at an inlet and an outlet of the compressor, and increasing condensed heat of the condenser. In the present invention, a recuperator is used to increase condensed heat of the condenser, leading to increasing the heat which circulation water circulating in a steam producing cycle receives from the condenser, whereby steam production efficiency can be improved.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: April 19, 2022
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Beom Joon Lee, Gil Bong Lee, Young Jin Baik, Hyung Ki Shin, Jun Hyun Cho, Chui Woo Roh, Ho Sang Ra, Eun Seok Wang, Young Soo Lee
  • Publication number: 20220065466
    Abstract: The present disclosure sucks air in hospital room using a compressor to maintain an inner portion of the hospital room in a negative pressure state, and creates a high-temperature and humid environment by a water spray, the compressor, and a sterilization chamber to kill bacteria or viruses. In addition, the compressor uses power generated by a turbine, and is configured so that heat of air coming out of the compressor is recovered to a suction side of the compressor, such that efficiency of a system may be secured. Further, some of clean air generated while passing through the sterilization chamber may be directly supplied again to the hospital room through a bypass means.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Jongjae CHO, Hyungki SHIN, Beomjoon LEE, Gyunchul HUR, Junhyun CHO, Bongsu CHOI, Chulwoo ROH, Young-Jin BAIK, Ho-sang RA
  • Patent number: 11028711
    Abstract: According to the present invention, part of carbon dioxide heated by a heater is supplied to a dry gas seal portion of a compressor so that a device for pressurizing and heating a seal gas is not additionally required, configuration can be simplified and cost can be reduced. In addition, a seal gas flow path includes a low-temperature seal gas flow path and a high-temperature seal gas flow path so that, in an initial driving mode, carbon dioxide heated by a high-temperature portion of the heater is used as a seal gas and in a turbine-driving mode, carbon dioxide heated by a low-temperature portion of the heater is used as a seal gas and thus a more efficient operation can be performed.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: June 8, 2021
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Jun Hyun Cho, Bong Su Choi, Ho Sang Ra, Hyung Ki Shin, Jong Jae Cho, Beom Joon Lee, Chul Woo Roh, Gil Bong Lee, Young Jin Baik
  • Patent number: 11028724
    Abstract: The present invention provides a partial admission operation turbine apparatus comprising: a rotor portion rotatably coupled to a rotary shaft of a turbine and including a plurality of rotor blades; a nozzle portion fixedly coupled to the rotary shaft in front of the rotor portion and guiding and supplying a working fluid to the rotor blades through a plurality of nozzle blades; and an inlet disk coupled to the rotary shaft in front of the nozzle portion in a plate shape and having a plurality of admission holes formed therein so as to supply the working fluid to the nozzle portion to partially admit the working fluid into the nozzle portion, wherein each of the admission holes is formed to have a different passage cross-sectional areas, so that the opening and closing of the admission holes are controlled according to operating flow rate conditions to control a partial admission ratio of the working fluid supplied to the nozzle portion.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 8, 2021
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hyung Ki Shin, Jun Hyun Cho, Young Jin Baik, Gil Bong Lee, Beom Joon Lee, Chui Woo Roh, Ho Sang Ra, Jong Jae Cho
  • Publication number: 20200131920
    Abstract: According to the present invention, part of carbon dioxide heated by a heater is supplied to a dry gas seal portion of a compressor so that a device for pressurizing and heating a seal gas is not additionally required, configuration can be simplified and cost can be reduced. In addition, a seal gas flow path includes a low-temperature seal gas flow path and a high-temperature seal gas flow path so that, in an initial driving mode, carbon dioxide heated by a high-temperature portion of the heater is used as a seal gas and in a turbine-driving mode, carbon dioxide heated by a low-temperature portion of the heater is used as a seal gas and thus a more efficient operation can be performed.
    Type: Application
    Filed: June 26, 2019
    Publication date: April 30, 2020
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Jun Hyun CHO, Bong Su CHOI, Ho Sang RA, Hyung Ki SHIN, Jong Jae CHO, Beom Joon LEE, Chul Woo ROH, Gil Bong LEE, Young Jin BAIK
  • Publication number: 20200095885
    Abstract: The present invention provides a partial admission operation turbine apparatus comprising: a rotor portion rotatably coupled to a rotary shaft of a turbine and including a plurality of rotor blades; a nozzle portion fixedly coupled to the rotary shaft in front of the rotor portion and guiding and supplying a working fluid to the rotor blades through a plurality of nozzle blades; and an inlet disk coupled to the rotary shaft in front of the nozzle portion in a plate shape and having a plurality of admission holes formed therein so as to supply the working fluid to the nozzle portion to partially admit the working fluid into the nozzle portion, wherein each of the admission holes is formed to have a different passage cross-sectional areas, so that the opening and closing of the admission holes are controlled according to operating flow rate conditions to control a partial admission ratio of the working fluid supplied to the nozzle portion.
    Type: Application
    Filed: November 1, 2017
    Publication date: March 26, 2020
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Hyung Ki SHIN, Jun Hyun CHO, Young Jin BAIK, Gil Bong LEE, Beom Joon LEE, Chul Woo ROH, Ho Sang RA, Jong Jae CHO
  • Patent number: 10533553
    Abstract: A single-stage compressor including one compressing unit, includes: a housing having a compressing chamber formed therein and including a suction port, which is located in one side of the compressing chamber and into which a working fluid enters, and an injection port, which is located on the compressing chamber to be spaced apart from the suction port by a predetermined distance and into which an intermediate-pressure working fluid is injected; and an intermediate-pressure valve installed on an intermediate-pressure fluid flow path on which the intermediate-pressure working fluid moves and configured to control supply of the intermediate-pressure working fluid so that the intermediate-pressure working fluid is supplied to the injection port in response to an intermediate pressure of the compressing chamber.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: January 14, 2020
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gil Bong Lee, Young Soo Lee, Beom Joon Lee, Ho Sang Ra, Young Jin Baik, Jun Hyun Cho, Hyung Ki Shin
  • Publication number: 20190323704
    Abstract: In the present invention, a recuperator is used in a refrigerant cycle to make a heat exchange between a refrigerant generated in a condenser and a refrigerant before flowing into a compressor, thereby supercooling the refrigerant to minimize the quality of the refrigerant introduced into an evaporator, elevating temperatures at an inlet and an outlet of the compressor, and increasing condensed heat of the condenser. In the present invention, a recuperator is used to increase condensed heat of the condenser, leading to increasing the heat which circulation water circulating in a steam producing cycle receives from the condenser, whereby steam production efficiency can be improved.
    Type: Application
    Filed: November 1, 2017
    Publication date: October 24, 2019
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Beom Joon LEE, Gil Bong LEE, Young Jin BAIK, Hyung Ki SHIN, Jun Hyun CHO, Chul Woo ROH, Ho Sang RA, Eun Seok WANG, Young Soo LEE
  • Patent number: 10233785
    Abstract: In a steam turbine power generation system according to the present invention, a regenerator and an ejector are selectively operated according to outdoor air temperature so that the effects of the outdoor air temperature can be minimized and thus an increase in back pressure of a turbine is prevented and thus the operating efficiency of the steam turbine power generation system can be guaranteed. In addition, when the outdoor air temperature is lower than a set temperature, only a steam condenser and an air cooling condenser are used, and when the outdoor air temperature is equal to or higher than the set temperature, the regenerator and the ejector are operated so that the condensation efficiency of the air cooling condenser is improved and thus the cooling efficiency of the steam turbine power generation system can be maximized.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: March 19, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gil Bong Lee, Beom Joon Lee, Chul Woo Roh, Ho Sang Ra, Young Jin Baik
  • Publication number: 20190063264
    Abstract: In a steam turbine power generation system according to the present invention, a regenerator and an ejector are selectively operated according to outdoor air temperature so that the effects of the outdoor air temperature can be minimized and thus an increase in back pressure of a turbine is prevented and thus the operating efficiency of the steam turbine power generation system can be guaranteed. In addition, when the outdoor air temperature is lower than a set temperature, only a steam condenser and an air cooling condenser are used, and when the outdoor air temperature is equal to or higher than the set temperature, the regenerator and the ejector are operated so that the condensation efficiency of the air cooling condenser is improved and thus the cooling efficiency of the steam turbine power generation system can be maximized.
    Type: Application
    Filed: August 29, 2017
    Publication date: February 28, 2019
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gil Bong LEE, Beom Joon LEE, Chul Woo ROH, Ho Sang RA, Young Jin BAIK
  • Patent number: 10208631
    Abstract: The present invention drives an ejector refrigeration unit using waste heat, such as a combustion gas generated from the outside, etc., and cools a working fluid sucked into a compressor in a power generator using the working fluid that circulates in the ejector refrigeration unit, thereby reducing a compression work of the compressor so that efficiency of a system can be improved.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: February 19, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Young Jin Baik, Jun Hyun Cho, Gil Bong Lee, Ho Sang Ra, Hyung Ki Shin
  • Publication number: 20190048873
    Abstract: A single-stage compressor including one compressing unit, includes: a housing having a compressing chamber formed therein and including a suction port, which is located in one side of the compressing chamber and into which a working fluid enters, and an injection port, which is located on the compressing chamber to be spaced apart from the suction port by a predetermined distance and into which an intermediate-pressure working fluid is injected; and an intermediate-pressure valve installed on an intermediate-pressure fluid flow path on which the intermediate-pressure working fluid moves and configured to control supply of the intermediate-pressure working fluid so that the intermediate-pressure working fluid is supplied to the injection port in response to an intermediate pressure of the compressing chamber.
    Type: Application
    Filed: January 25, 2018
    Publication date: February 14, 2019
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gil Bong LEE, Young Soo LEE, Beom Joon LEE, Ho Sang RA, Young Jin BAIK, Jun Hyun CHO, Hyung Ki SHIN
  • Patent number: 10082049
    Abstract: A supercritical carbon dioxide power generation system is provided. The supercritical carbon dioxide power generation system may include a regenerator, a turbine, a heat recoverer, a condenser, a compressor an expansion valve, a flash tank, a heat exchanger, and an ejector, and may utilize waste heat of the supercritical carbon dioxide power generation system.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: September 25, 2018
    Assignee: Korea Institute of Energy Research
    Inventors: Gil Bong Lee, Young Jin Baik, Jun Hyun Cho, Ho Sang Ra, Hyung Ki Shin
  • Publication number: 20180195417
    Abstract: The present invention drives an ejector refrigeration unit using waste heat, such as a combustion gas generated from the outside, etc., and cools a working fluid sucked into a compressor in a power generator using the working fluid that circulates in the ejector refrigeration unit, thereby reducing a compression work of the compressor so that efficiency of a system can be improved.
    Type: Application
    Filed: November 3, 2015
    Publication date: July 12, 2018
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Young Jin BAIK, Jun Hyun CHO, Gil Bong LEE, Ho Sang RA, Hyung Ki SHIN
  • Patent number: 9982918
    Abstract: A heating medium supplied to an evaporator is used to heat lubricant oil in a screw compressor before the screw compressor starts up, and no additional heater for heating the lubricant oil in the screw compressor is required. When the screw compressor operates, the heating medium discharged from the evaporator after the evaporator is heated by the heating medium, is used to cool the lubricant oil. The lubricant oil heated by a lubricant oil heat exchanger is directly injected into a motor and a screw rotor so that introduction of a liquid refrigerant into a compressive chamber is reduced when the screw compressor starts up later. The lubricant oil introduced into the motor is discharged toward a lubricant oil storage portion before the screw compressor starts up so that the liquid refrigerant is prevented in advance from being introduced into the screw rotor when the screw compressor starts up.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: May 29, 2018
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gil Bong Lee, Jun Hyun Cho, Young Soo Lee, Hyung Ki Shin, Young Jin Baik, Ho Sang Ra
  • Patent number: 9759437
    Abstract: A dehumidification system including: an exhaust path for exhausting indoor air to the outdoor space; an inlet path for entering outdoor air to the indoor space from the outdoor space; an indoor air bypass path bypassing a part of indoor air to be exhausted to the exhaust path to the inlet path by connecting the exhaust path and the inlet path; an outdoor air bypass path bypassing a part of outdoor air to be flowed to the inlet path to the exhaust path by connecting the inlet path and the exhaust path; and a porous separation membrane filter installed between the indoor air bypass path and the outdoor air bypass path and passing water molecules included in indoor air passing through the indoor air bypass path through the outdoor air bypass path.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: September 12, 2017
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Min Sung Kim, Gil Bong Lee, Young Jin Baik, Jun Hyun Cho, Ho Sang Ra
  • Publication number: 20170016651
    Abstract: Provided is an energy system comprising: a screw compressor; a condenser; an expansion device; an evaporator; an evaporator heat source flow path configured to provide a heating medium supplied from an outside as a heat source of the evaporator; a lubricant oil heat-exchanging unit configured to perform a heat-exchanging operation of the heating medium on an evaporator heat source flow path and lubricant oil including a refrigerant inside the screw compressor, to heat the lubricant oil by the heating medium before the screw compressor starts up, and to cool the lubricant oil by the heating medium discharged from the evaporator after the evaporator is heated by the heating medium, after the screw compressor starts up; and a controller configured to control the lubricant oil heat-exchanging unit depending on whether the screw compressor starts up.
    Type: Application
    Filed: June 22, 2016
    Publication date: January 19, 2017
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Gil Bong LEE, Jun Hyun CHO, Young Soo LEE, Hyung Ki SHIN, Young Jin BAIK, Ho Sang RA
  • Publication number: 20170010006
    Abstract: A dehumidification system according to an exemplary embodiment of the inventive concept performs dehumidification of indoor air without power waste and condensation heat by transferring water molecules of indoor air to the outdoor air through a porous separation membrane filter, thereby minimizing energy consumption. Also, the dehumidification system may perform dehumidification without outdoor air flow into the indoor space, which prevents indoor air temperature change due to outdoor air and inflow of pollutants like fine dust included in outdoor air.
    Type: Application
    Filed: August 4, 2015
    Publication date: January 12, 2017
    Inventors: Min Sung KIM, Gil Bong Lee, Young Jin Baik, Jun Hyun Cho, Ho Sang Ra
  • Publication number: 20170010007
    Abstract: A dehumidification system including: an exhaust path for exhausting indoor air to the outdoor space; an inlet path for entering outdoor air to the indoor space from the outdoor space; an indoor air bypass path bypassing a part of indoor air to be exhausted to the exhaust path to the inlet path by connecting the exhaust path and the inlet path; an outdoor air bypass path bypassing a part of outdoor air to be flowed to the inlet path to the exhaust path by connecting the inlet path and the exhaust path; and a porous separation membrane filter installed between the indoor air bypass path and the outdoor air bypass path and passing water molecules included in indoor air passing through the indoor air bypass path through the outdoor air bypass path.
    Type: Application
    Filed: August 4, 2015
    Publication date: January 12, 2017
    Inventors: Min Sung KIM, Gil Bong Lee, Young Jin Baik, Jun Hyun Cho, Ho Sang Ra