Comparative assessment of the various split flow supercritical CO2 Brayton cycles for Marine gas turbine waste heat recovery

Supercritical CO2 Brayton cycle (sCO2 BC) can become easily utilized in marine gas turbine waste heat recovery applications due to their high efficiency, compact size, and low-cost advantages. In this study, the performance of the three different split flow sCO2 BCs, including turbine split flow-1 (TSF-1), turbine split flow-2 (TSF-2), and turbine split-3 (TSF-3), for the recovery of marine gas turbine waste heat is compared. The Engineering Equation Solver (EES) application is used to compare the three different split flow sCO2 BCs' performances. Moreover, to investigate the influence of important thermodynamic parameters on cycle performance, a parametric analysis is carried out. The effect of variable exhaust gas temperature, turbine input pressure, and compressor inlet pressure on net power, the energy efficiency of the system, system's exergy efficiency, and exergy destruction are examined. The results suggest that the energy efficiencies of the TSF-1 sCO2 BC, the TSF-2 sCO2 BC, and the TSF-3 sCO2 BC are calculated by 28.71%, 34.5%, and 29.42%, respectively. The TSF-2 sCO2 BC has more advantages in efficiency among all the cycle layouts while the TSF-3 sCO2 BC layout has better performance in the net power. In addition, the TSF-3 sCO2 BC has the highest exergy destruction at 99.71 kW, followed by the TSF-1 sCO2 BC at 91.83 kW and the TSF-2 sCO2 BC at 41.75 kW. It has been determined that the cycle's net power increases with rising exhaust gas temperature and turbine input pressure and decreases with compressor input pressure. Exhaust gas temperature and turbine inlet pressure have a positive effect on the performance of all split flow sCO2 BCs.

Keywords:

Marine gas turbine waste heat recovery, Supercritical CO2 Brayton cycle Thermodynamic analysis,

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[1] Poulsen RT, Johnson H. The logic of business vs. the logic of energy management practice: understanding the choices and effects of energy consumption monitoring systems in shipping companies. Journal of Cleaner Production 2016; 112: 3785-3797.
[2] Alagumalai A. Internal combustion engines: Progress and prospects. Renewable and Sustainable Energy Reviews 2014; 38: 561-571.
[3] Jiaqiang E, Zhang Z, Chen J. Pham M, Zhao X, Peng Q, Zhang B, Yin Z. Performance and emission evaluation of a marine diesel engine fueled by water biodiesel-diesel emulsion blends with a fuel additive of a cerium oxide nanoparticle. Energy Conversion and Management 2018; 169: 194-205.
[4] MAN Diesel & Turbo. 8S90ME-C10.5 with high load tuning. CEAS Engine Data Report.
[5] Pan P, Yuan C, Sun Y, Yan X, Lu M, Bucknall R. Thermo-economic analysis and multi-objective optimization of S-CO2 Brayton cycle waste heat recovery system for an ocean-going 9000 TEU container ship. Energy Conversion and Management 2020; 221: 113077.
[6] Zhu S, Zhang K, Deng K. A review of waste heat recovery from the marine engine with highly efficient bottoming power Cycles. Renewable and Sustainable Energy Reviews 2020; 120: 109611.
[7] Larsen U, Sigthorsson O, Haglind F. A comparison of advanced heat recovery power cycles in a combined cycle for large ships. Energy 2014; 74: 260-268.
[8] Yang Y, Huang Y, Jiang P, Zhu Y. Multi-objective optimization of combined cooling, heating, and power systems with supercritical CO2 recompression Brayton cycle. Applied Energy 2020; 271: 115189.
[9] Han F, Wang Z, Ji Y, Li W, Sundén B. Energy analysis and multi-objective optimization of waste heat and cold energy recovery process in LNG-fueled vessels based on a triple organic Rankine cycle. Energy Conversion and Management 2019; 195: 561-572.
[10] Ouyang T, Wang Z, Wang G, Zhao Z, Xie S, and Li X. Advanced thermo-economic scheme and multi- objective optimization for exploiting the waste heat potentiality of marine natural gas engine. Energy 2021; 236: 121440.
[11] Cha JE, Park JH, Lee G, Seo H, Lee S, Chung HJ, Lee SW. 500 kW supercritical CO2 power generation system for waste heat recovery: System design and compressor performance test results. Applied Thermal Engineerinhg 2021; 194: 117028.
[12] Sharma OP, Kaushik SC, Manjunath K. Thermodynamic analysis and optimization of a supercritical CO2 regenerative recompression Brayton cycle coupled with a marine gas turbine for shipboard waste heat recovery. Thermal Science and Engineering Progress 2017; 3: 62-74.
[13] Hou S, Wu Y, Zhou Y, Yu L. Performance analysis of the combined supercritical CO2 recompression and regenerative cycle used in waste heat recovery of marine gas türbine. Energy Conversion and Management 2017; 151: 73-85.
[14] Manjunath K, Sharma OP, Tyagi SK, Kaushik SC. Thermodynamic analysis of a supercritical/transcritical CO2 based waste heat recovery cycle for shipboard power and cooling applications. Energy Conversion and Management 2018; 155: 262-275.
[15] Feng Y, Du Z, Shreka M, Zhu Y, Zhou S, Zhang W. Thermodynamic analysis and performance optimization of the supercritical carbon dioxide Brayton cycle combined with the Kalina cycle for waste heat recovery from a marine low-speed diesel engine. Energy Conversion and Management 2020; 206: 112483.
[16] Uusitalo A, Ameli A, Turunen-Saaresti T. Thermodynamic and turbomachinery design analysis of supercritical Brayton cycles for exhaust gas heat recovery. Energy 20019; 167: 60-79.
[17] Wang Z, Jiang Y, Ma Y, Han F, Ji Y, Cai W. A partial heating supercritical CO2 nested transcritical CO2 cascade power cycle for marine engine waste heat recovery: Thermodynamic, economic, and footprint analysis. Energy 2022; 261: 125269.
[18] Ouyang T, Zhao Z, Su Z, Lu J, Wang Z, Huang H. An integrated solution to harvest the waste heat from a large marine solid oxide fuel cell. Energy Conversion and Management 2020; 223: 133318.
[19] Qin L, Xie G, Ma Y, Li S. Thermodynamic analysis and multi-objective optimization of a waste heat recovery system with a combined supercritical/transcritical CO2 cycle. Energy 2023; 265: 126332.
[20] Wang Z, Jiang Y, Han F, Yu S, Li W, Ji Y, Cai W. A thermodynamic configuration method of combined supercritical CO2 power system for marine engine waste heat recovery based on recuperative effects . Applied Thermal Engineering 2022; 200: 117645.
[21] Sakalis G.N. Design and partial load operation optimization of integrated ship Energy system based on supercritical CO2 waste heat recovery cycle. Sustainable Energy Technologies and Assessments 2022; 51: 101965.
[22] Khatoon S, Kim MH. Potential improvement and comparative assessment of supercritical Brayton cycles for arid climate. Energy Conversion and Management 2019; 200: 112082.
[23] Akbari A.D, Mahmoudi S.M.S. Thermoeconomic analysis & optimization of the combined supercritical CO2 (carbon dioxide) recompression Brayton/organic Rankine cycle. Energy 2014; 78: 501-512.
[24] Dincer I, Rosen MA. Exergy and energy analyses. Exergy 2013; 21-30.
[25] Chen K, Qin J, Sun H, Li H, He S, Zhang S, Bao W. Power optimization and comparison between simple recuperated and recompressing supercritical carbon dioxide Closed-Brayton-Cycle with finite cold source on hypersonic vehicles. Energy 2019; 181: 1189-1201.
[26] Wang K, Li MJ, Guo JQ, Li P, Liu ZB. A systematic comparison of different S-CO2 Brayton cycle layouts based on multi-objective optimization for applications in solar power tower plants. Applied Energy 2018; 212: 109-121.
[27] Al-Sulaiman FA, Atif M. Performance comparison of different supercritical carbon dioxide Brayton cycles integrated with a solar power tower. Energy 2015; 82: 61-71.
[28] K. Sanford, Engineering equation solver (EES), 2023.