Thermodynamic and Exergo-economic Analyses of Waste Heat Recovery of a Two-shaft Turbofan Engine Using Supercritical Carbon Dioxide Brayton Cycle

In this study, first-law, second-law, and exergo-economic investigations are accomplished to recover the waste heat of a two-shaft turbofan engine applying supercritical carbon dioxide Brayton cycle. The efficacy different operating parameters including inlet temperature turbine, pressure ratio compressor, Mach number on performance proposed system in terms energy exergy performance, destruction rate, annual levelized cost investment have been examined. results indicate that cycle is specified as 42.94%, second-law calculated 85.88% whole power generation amount achieved be 9806 kW. Also, display among various components system, maximum occurred low-pressure fan, mixer. It found by increasing high-pressure first-law efficiency decrease while total rate increase. Moreover, it inferred thermodynamic rises when compressor outcomes also demonstrate concerning capital costs components, highest obtained for turbine recuperator, which 326.3 $/h 358.4 $/h, respectively.