期刊
ARCHIVES OF THERMODYNAMICS
卷 34, 期 2, 页码 23-38出版社
DE GRUYTER OPEN LTD
DOI: 10.2478/aoter-2013-0008
关键词
Inverse Brayton cycle; Brayton cycle; gas-steam unit; oxy combustion; CCS; thermodynamic analysis; numerical analysis; CFM
In this paper, thermodynamic analysis of a proposed innovative double Brayton cycle with the use of oxy combustion and capture of CO2, is presented. For that purpose, the computation flow mechanics (CFM) approach has been developed. The double Brayton cycle (DBC) consists of primary Brayton and secondary inverse Brayton cycle. Inversion means that the role of the compressor and the gas turbine is changed and firstly we have expansion before compression. Additionally, the working-fluid in the DBC with the use of oxy combustion and CO2 capture contains a great amount of H2O and CO2, and the condensation process of steam (H2O) overlaps in negative pressure conditions. The analysis has been done for variants values of the compression ratio, which determines the lowest pressure in the double Brayton cycle.
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