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公开(公告)号：US20200095885A1
公开(公告)日：2020-03-26
申请号：US16469941
申请日：2017-11-01
Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
Inventor： Hyung Ki SHIN , Jun Hyun CHO , Young Jin BAIK , Gil Bong LEE , Beom Joon LEE , Chul Woo ROH , Ho Sang RA , Jong Jae CHO
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. Due to the aforementioned feature, since continuous partial admission can be operated for a supercritical power generation system, it is possible to resolve the difficulties in designing and manufacturing turbines. Also, since the partial admission ratio can be adjusted according to operating conditions, it is possible to improve the performance of a turbine that is operated by continuous partial admission. Furthermore, even if the operating flow rate conditions change in the same cycle, it is possible to operate the same turbine with high efficiency.
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公开(公告)号：US20190323704A1
公开(公告)日：2019-10-24
申请号：US16472570
申请日：2017-11-01
Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
Inventor： 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
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.
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公开(公告)号：US20190063264A1
公开(公告)日：2019-02-28
申请号：US15689575
申请日：2017-08-29
Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
Inventor： Gil Bong LEE , Beom Joon LEE , Chul Woo ROH , Ho Sang RA , Young Jin BAIK
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.
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