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Thermal Analysis of Supercritical Carbon Dioxide Brayton Cycle with Two Recompression Configurations

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The qualitative and the quantitative analysis used to describe the energy transfer processes, which define the turbulent flow transport into the mechanical devices and thermal effects generated during the energy production processes, have been evolved in recent years with the application of the numerical method and computational tools used to generate an inexpensive analysis of the performance of the mechanical components and their influence in the energy production of the main thermodynamic cycles studied in science and engineering. The increase in energy production, conversion, and consumption has been influenced by the economic growth, which probably has caused the main effects of the current environmental pollution. Therefore, non-conventional energy resources have been applied in order to minimize conventional energy consumption and improve the energy transfer processes, which describe the application of the thermodynamic cycle. In this sense, a novel supercritical carbon dioxide (S – CO2) Brayton cycle has been computed in a virtual environment with MATLAB software in order to analyze the physical values that describe the thermodynamic behavior of the carbon dioxide flow into the two main variants: Recompression Cycle (RC), and Recompression with Main Compression Intercooling (MCIC). The first and the second laws of thermodynamics have been applied in a computational code in order to generate an inexpensive thermal efficiency prediction under real working conditions and verify the exergy destruction of the mechanical components, which conform to the thermodynamic cycles studied in this research. A good agreement has been determined during the comparison of the numerical data against the results of the previous research, with a low error rate of less than 2 percent.
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Brayton Cycle; Carbon Dioxide; Model; Recompression; Thermodynamic

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