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Significantly increasing consumption and demand in conventional fossil energy sources require energy sources to be more efficient and sustainable. In this study, it is aimed to increase the efficiency of the systems by using thermodynamic cycles from waste heat sources. The designed system is aimed at increasing the efficiency of the system by adding sub-cycles of the waste heat of a gas turbine. The results analyzed with the engineering equation solver program, when all the cycles are combined, the system energy efficiency is 75% and the total exergy efficiency is 24%. Brayton cycle when the system is evaluated alone, the energy efficiency of the system is 65%, the exergy efficiency is 14%. The S-CO2 cycle system when the system is evaluated alone, the exergy efficiency is 23% and the exergy efficiency is 11%. The ORC system when the system is evaluated alone, the exergy efficiency is 19% and the exergy efficiency is 22%. Rankine system when the system is evaluated alone, the exergy efficiency is 17% and the exergy efficiency is 88%. Turbine inlet temperatures tend to decrease as the exergy destruction in the system also affects the subcomponents.
PAPER REVISED: 2023-04-10
PAPER ACCEPTED: 2023-05-11
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THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 4, PAGES [3031 - 3041]
  1. Guo, J., et al., Performance Study of a Supercritical CO2 Brayton Cycle Coupled with a Compressed CO2 Energy Storage System for Waste Heat Recovery of Ship Gas Turbines Under Variable Load Conditions, Sustainable Energy & Fuels, 6 (2022), 24, pp. 5557-5578
  2. Pan, Z., et al., Thermoeconomic Analysis of a Combined Natural Gas Cogeneration System with a Supercritical CO2 Brayton Cycle and an Organic Rankine Cycle, Journal of Energy Resources Technology, 142 (2020), 10, 102108
  3. Wang, S., et al., Exergoeconomic Analysis of a Novel Trigeneration System Containing Supercritical CO2 Brayton Cycle, Organic Rankine Cycle and Absorption Refrigeration Cycle for Gas Turbine Waste Heat Recovery, Energy Conversion and Management, 221 (2020), Oct., 113064
  4. Cao, Y., et al., A Concept of a Supercritical CO2 Brayton and Organic Rankine Combined Cycle for Solar Energy Utilization With Typical Geothermal as Auxiliary Heat Source: Thermodynamic Analysis and Optimization, Energy Reports, 8 (2022), Nov., pp. 322-333
  5. Song, J., et al., Combined Supercritical CO2 (SCO2) Cycle and Organic Rankine Cycle (ORC) System for Hybrid Solar and Geothermal Power Generation: Thermoeconomic Assessment of Various Configurations, Renewable Energy, 174 (2021), Aug., pp. 1020-1035
  6. Baglietto, G., et al., Techno-Economic Comparison of Supercritical CO2, Steam, and ORC Cycles for WHR Applications, Proceedings, Turbo Expo: Power for Land, Sea, and Air, Rotherdam, The Netherlands, Vol. 86083, 2022, p. V009T28A027
  7. Jin, Q., et al., A Modified Recompression S-CO2 Brayton Cycle and Its Thermodynamic Optimization, Energy, 263 Part E (2023), Jan., 126015
  8. Hou, S., et al., Performance Optimization of Combined Supercritical CO2 Recompression Cycle and Regenerative Organic Rankine Cycle Using Zeotropic Mixture Fluid, Energy conversion and management, 166 (2018), June, pp. 187-200
  9. Xia, X., et al., Energy, Conventional and Advanced Exergy Analysis for the Organic Rankine Cycle-Vapor Compression Refrigeration Combined System Driven by Low-Grade Waste Heat, Applied Thermal Engineering, 220 (2023), Feb., 119650
  10. Hai, T., et al., A Low-Temperature Driven Organic Rankine Cycle for Waste Heat Recovery from a Geothermal Driven Kalina Cycle: 4E Analysis and Optimization Based on Artificial Intelligence, Sustainable Energy Technologies and Assessments, 55 (2023), Feb., 102895
  11. Qin, L., et al., Thermodynamic Analysis and Multi-Objective Optimization of a Waste Heat Recovery System with a Combined Supercritical/Transcritical CO2 Cycle, Energy, 265 (2023), Feb., 126332
  12. Gao, W., et al., Performance of S-CO2 Brayton Cycle and Organic Rankine Cycle (ORC) Combined System Considering the Diurnal Distribution of Solar Radiation, Journal of Thermal Science, 28 (2019), 3, pp. 463-471
  13. AlZahrani, A. A., Dincer, I., Comparative Energy and Exergy Studies of Combined CO2 Brayton-Organic Rankine Cycle Integrated with Solar Tower Plant, International Journal of Exergy, 26 (2018), 1-2, pp. 21-40
  14. Sahin, M. E., Autoclave Device Exergy and Energy Analysis in Hospital Sterilization Units, Thermal Science, 26 (2022), 4A, pp. 2955-296
  15. Khan, Y., Mishra, R. S., Performance Evaluation of Solar Based Combined Pre-Compression Supercriti-cal CO2 Cycle and Organic Rankine Cycle, International journal of Green energy, 18 (2021), 2, pp. 172- 186
  16. Ping, X., et al., Dynamic Response Assessment and Multi-Objective Optimization of Organic Rankine Cycle (ORC) Under Vehicle Driving Cycle Conditions, Energy, 263 (2023), Jan. Part A, 125551
  17. Manente, G., Fortuna, F. M., Supercritical CO2 Power Cycles for Waste Heat Recovery: A Systematic Comparison Between Traditional and Novel Layouts with Dual Expansion, Energy Conversion and Management, 197 (2019), Oct, 111777
  18. Zhang, R., et al., Thermodynamic Analysis and Parametric Optimization of a Novel S-CO2 Power Cycle for the Waste Heat Recovery of Internal Combustion Engines, Energy, 209 (2020), Oct., 118484
  19. Ruiz-Casanova, E., et al., Thermodynamic Analysis and Optimization of Supercritical Carbon Dioxide Brayton Cycles for Use with Low-Grade Geothermal Heat Sources, Energy Conversion and Management, 216 (2020), July, 112978
  20. Liu, Y., et al., Supercritical CO2 Brayton Cycle: A State-of-the-Art Review, Energy, 189 (2019), Dec., 115900
  21. Papingiotis, T., et al., Thermodynamic Analysis and Optimization of Transcritical and Supercritical Organic Rankine and Brayton Cycles Coupled to Parabolic Trough Collectors, Proceedings, IOP Conference Series: Materials Science and Engineering , Athens, Greece, Vol. 1037, No. 1, (2021), p. 012044
  22. Seyed Mahmoudi, S. M., et al., Integration of Supercritical CO2 Recompression Brayton Cycle with Organic Rankine/Flash and Kalina Cycles: Thermoeconomic Comparison, Sustainability, 14 (2022), 14, 8769
  23. Ozer, S., Dogan, B., Thermodynamic Analyzes in a Compression Ignition Engine Using Fuel Oil Diesel Fuel Blends, Thermal Science, 26 (2022), 4, pp. 3079-3088
  24. Dogan, B., et al., Exergy, Exergoeconomic, and Exergoenviroeconomic Evaluations of the Use of Diesel/Fusel Oil Blends in Compression Ignition Engines, Sustainable Energy Technologies and Assessments, 53 (2022), Oct. Part A, 102475
  25. Шкляр, В. И., et al., Эксергетический анализ работы газотурбинной установки, (Gas Turbine Unit Exergy Analys - in Russian), Промышленная теплотехника, 32 (2010), 1, pp. 108-112
  26. Cengel, Y. A., Boles M. B., Thermodynamics: An Engineering Approach, McGraw-Hill, New York, 2011
  27. Dincer, I., Rosen, M. A., Exergy: Energy, Environment and Sustainable Development, Elsevier Science, Amsterdam, The Netherlands, 2012
  28. Bejan, A., et al., Thermal Design and Optimization, Jonh Wiley and Sons, New York, USA, 1996
  29. Klein, S. A., Engineering Equation Solver (EES) (2020), F-Chart Software, Version 10.835-3D

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