公开(公告)号：US10233785B1

公开(公告)日：2019-03-19

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

IPC: F25B41/00 ,  F01K9/00 ,  F01K7/16 ,  F01K11/02 ,  F28B1/02 ,  F25B41/04

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.

公开(公告)号：US11028711B2

公开(公告)日：2021-06-08

申请号：US16453655

申请日：2019-06-26

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： 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

IPC: F01D11/00 ,  F02C3/04 ,  F01K7/32 ,  F01D11/04 ,  F01K25/10 ,  F01D25/18 ,  F02C1/10 ,  F16J15/40

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.