Complex supercritical CO2 generation system
AssigneeDoosan Heavy Industries Construction Co., Ltd
InventorsByoung Gu Bak, Seung Gyu Kang, Jeong Ho Hwang, Eung Chan Lee, Cheol Rae Jeong
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Abstract
The present invention relates to a complex supercritical CO2 generation system capable of increasing the heat exchange efficiency to improve a system output. According to the present invention, a complex generation system of a bottoming cycle and a topping cycle is configured, a flow rate of a cold side outlet of a bottoming cycle recuperators provided in parallel is branched to be supplied to a recuperator of a topping cycle provided in series, thereby increasing heat exchange efficiency of the topping cycle.
Claims20
A complex supercritical CO2 generation system, comprising:
- a bottoming cycle including
- a compressor that compresses a working fluid,
- a lower heat exchanger unit having a plurality of heat exchangers that are supplied with heat from an external heat source to heat the working fluid,
- a lower turbine unit having a plurality of turbines that are driven by the working fluid,
- a lower recuperator unit having a plurality of recuperators that are installed in parallel to each other and exchange heat between the working fluid having passed through the lower turbine unit and the working fluid having passed through the compressor to cool the working fluid having passed through the lower turbine unit, and
- a pre-cooler that cools the working fluid primarily cooled by the lower recuperator unit and supplies the pre-cooled working fluid to the compressor;
- and
- a topping cycle including
- an upper heat exchanger unit that is supplied with the heat from the external heat source to heat the working fluid,
- an upper turbine unit that is driven by the working fluid, and
- an upper recuperator unit having a plurality of recuperators that are installed in series with each other and exchange heat between the working fluid having passed through the upper turbine unit and the working fluid supplied from the bottoming cycle to cool the working fluid having passed through the upper turbine unit, the working fluid cooled by the upper recuperator unit being supplied to the bottoming cycle,
- wherein the bottoming cycle and the topping cycle share the compressor and the pre-cooler of the bottoming cycle.
A complex supercritical CO2 generation system, comprising:
- a bottoming cycle including
- a compressor unit having a plurality of compressors that compress a working fluid,
- a lower heat exchanger unit having a plurality of heat exchangers that are supplied with heat from an external heat source to heat the working fluid,
- a lower turbine unit having a plurality of turbines that are driven by the working fluid,
- a lower recuperator unit having a plurality of recuperators that are installed in parallel to each other and exchange heat between the working fluid having passed through the lower turbine unit and the working fluid having passed through the compressor to cool the working fluid having passed through the lower turbine unit, and
- a pre-cooler unit having a plurality of pre-coolers that cool the working fluid primarily cooled by the lower recuperator unit and supply the pre-cooled working fluid to the compressor;
- and
- a topping cycle including
- an upper heat exchanger unit that is supplied with the heat from the external heat source to heat the working fluid,
- an upper turbine unit that is driven by the working fluid, and
- an upper recuperator unit having a plurality of recuperators that are installed in series with each other and exchange heat between the working fluid having passed through the upper turbine unit and the working fluid supplied from the bottoming cycle to cool the working fluid having passed through the upper turbine unit, the working fluid cooled by the upper recuperator unit being supplied to the bottoming cycle,
- wherein the bottoming cycle and the topping cycle share the compressor and the pre-cooler of the bottoming cycle.
Dependencies are inferred from the claim text.