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US 10,371,015 B2Granted
Supercritical CO2 generation system for parallel recuperative type
AssigneeDoosan Heavy Industries Construction Co., Ltd
InventorsCheol Rae Jeong, Seung Gyu Kang, Jeong Ho Hwang, Byoung Gu Bak, Eung Chan Lee
Life of this patent
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Abstract
A supercritical CO2 generation system for a parallel recuperative type capable of improving generation efficiency and saving costs is disclosed. According to the supercritical CO2 generation system according to the exemplary embodiment, a compression ratio of a turbine can be increased by arranging recuperators in parallel, thereby maximizing work of the turbine.
Claims18
A supercritical CO2 generation system comprising:
- a compressor compressing a working fluid;
- a pre-cooler for cooling the working fluid and supplying pre-cooled working fluid to the compressor;
- a heat exchanger unit including first and second heaters configured to heat the working fluid;
- first and second turbines respectively driven by the working fluid;
- and
- a recuperator unit including a first recuperator and a second recuperator installed in parallel to each other such that the working fluids cooled by passing through the first and second recuperators are mixed with each other at a downstream side of the recuperator unit and supplied to the pre-cooler, the recuperator unit exchanging heat between the working fluid having passed through the first and second turbines and the working fluid having passed through the compressor to cool the working fluid having passed through the first and second turbines,
- wherein the working fluids having passed through the second heater and the second recuperator, respectively, are mixed at an upstream side of the first heater, and
- wherein the mixed working fluids are heated by the first heater and then supplied to the first turbine.
5 more elements
A supercritical CO2 generation system comprising:
- a compressor compressing a working fluid;
- a low temperature heater and a high temperature heater supplied heat from an external heat source to heat the working fluid;
- a high pressure turbine driven by the working fluid heated by passing through the low temperature heater and the high temperature heater;
- a low temperature recuperator and a high temperature recuperator installed in parallel to each other and configured to recuperate the working fluid passing through the compressor;
- a low pressure turbine driven by the working fluid recuperated by the high temperature recuperator;
- a pre-cooler cooling the working fluid primarily cooled by the high temperature recuperator and the low temperature recuperator and supplying the pre-cooled working fluid to the compressor;
- and
- a separator branching the working fluid passing through the compressor to the low temperature heater, the low temperature recuperator and the high temperature recuperator, respectively,
- wherein the working fluids having passed through the low temperature heater and the high temperature recuperator, respectively, are mixed at an upstream side of the high temperature heater and then are heated by the high temperature heater to be supplied to the high pressure turbine.
6 more elements
A supercritical CO2 generation system comprising:
- a compressor compressing a working fluid;
- a low temperature heater and a high temperature heater supplied heat from an external heat source to heat the working fluid;
- a high pressure turbine driven by the working fluid heated by passing through the low temperature heater and the high temperature heater;
- a low temperature recuperator and a high temperature recuperator installed in parallel to each other and configured to recuperate the working fluid passing through the compressor;
- a low pressure turbine driven by the working fluid recuperated by the high temperature recuperator;
- a pre-cooler cooling the working fluid primarily cooled by the high temperature recuperator and the low temperature recuperator and supplying the pre-cooled working fluid to the compressor;
- a first separator branching the working fluid passing through the compressor to the low temperature heater, the low temperature recuperator, and the high temperature recuperator, respectively;
- and
- a second separator branching the working fluid branched to the low temperature recuperator and the high temperature recuperator from the first separator, respectively,
- wherein the working fluids having passed through the low temperature heater and the high temperature recuperator, respectively, are mixed at an upstream side of the high temperature heater and then are heated by the high temperature heater to be supplied to the high pressure turbine.
7 more elements
Dependencies are inferred from the claim text.