Energy And Exergy Analysis For A New Models With Gradual Expansion Combined With Multiple Power Generation Systems
Abstract
Our utilization of waste heat sources, combined with multiple power generation systems and systems featuring gradual expansion, constitutes a crucial domain in terms of energy and exergy analysis. Within these systems, the utilization of energies derived from various power sources reveals the availability of system components, highlighting the importance of meticulous analysis during design and operation to mitigate energy and exergy losses. Energy and exergy analysis stands as a pivotal method employed throughout the design, operation, and maintenance phases of these systems. This study initiates with the commencement of the combustion chamber temperature and turbine output temperature of a UGT-25000 gas turbine, followed by the development of the system through gradual expansion processes. A comprehensive thermodynamic analysis of the integrated power generation system was conducted, encompassing heat transitions across the H2O Rankine cycle, R113 ORC cycle, S-CO2 cycle, electrolyzer, and NH3H2O absorption cycle along with successive sub-cycles. Additionally, energy extraction from turbines was facilitated through the gradual expansion of the air-Brayton, R113-ORC, H2O-Rankine, and S-CO2 cycles. The resulting net powers are as follows: 0.0034 kg/s of hydrogen produced with the electrolyzer from the Air Brayton cycle, 34,314 kW; H2O Rankine cycle, 1,828 kW; R113 ORC, 681 kW; NH3H2O absorption cycle, 2,985 kW; and S-CO2 cycle, 1,720 kW. The energy efficiency of the multi-integrated system is calculated to be 66.35%, with an exergy efficiency of 35%.
Keywords
Energy analysis 1, Exergy analysis 2, Brayton cycle 3, Rankine cycle 4, Organic rankine cycle 5, Absorption cycle 6, Electolyzer 7
References
- [1] Mohammadi, K., Ellingwood, K., & Powell, K. (2020). A novel triple power cycle featuring a gas turbine cycle with supercritical carbon dioxide and organic Rankine cycles: Thermoeconomic analysis and optimization. Energy Conversion and Management, 220, 113123.
- [2] Ran, P., Zhou, X., Wang, Y., Fan, Q., Xin, D., & Li, Z. (2023). Thermodynamic and exergetic analysis of a novel multi-generation system based on SOFC, micro-gas turbine, S-CO2 and lithium bromide absorption refrigerator. Applied Thermal Engineering, 219, 119585.
- [3] Khan, M. S., Mubeen, I., Jingyi, W., Zhang, Y., Zhu, G., & Yan, M. (2022). Development and performance assessment of a novel solar-assisted multigenerational system using high temperature phase change material. International Journal of Hydrogen Energy, 47(62), 26178-26197.
- [4] Khani, N., Manesh, M. H. K., & Onishi, V. C. (2022). 6E analyses of a new solar energy-driven polygeneration system integrating CO2 capture, organic Rankine cycle, and humidification-dehumidification desalination. Journal of Cleaner Production, 379, 134478.
- [5] Peng, W., Chen, H., Liu, J., Zhao, X., & Xu, G. (2021). Techno-economic assessment of a conceptual waste-to-energy CHP system combining plasma gasification, SOFC, gas turbine and supercritical CO2 cycle. Energy Conversion and Management, 245, 114622.
- [6] Khosravi, N. (2017). Design and Analysis of a Novel Renewable Multi-Generation System through Energetic and Exergetic. Investigation (Master's thesis, Eastern Mediterranean University EMU-Doğu Akdeniz Üniversitesi (DAÜ)).
- [7] Panahirad, B. (2017). Thermodynamic Analysis of a Multi-Generation Plant Driven by Pine Sawdust as Primary Fuel (Master's thesis, Eastern Mediterranean University EMU-Doğu Akdeniz Üniversitesi (DAÜ)).
- [8] Zhang, T., & Zhao, H. (2022). Thermodynamic analysis of a new hybrid system combined heat and power integrated solid oxide fuel cell, gas turbine, Rankine steam cycle with compressed air energy storage. Energy, 2004, 2965.
- [9] Hai, T., Zhou, J., Almojil, S. F., Almohana, A. I., Alali, A. F., Mehrez, S., ... & Almoalimi, K. T. (2023). Deep learning optimization and techno-environmental analysis of a solar-driven multigeneration system for producing sustainable hydrogen and electricity: A case study of San Francisco. International Journal of Hydrogen Energy, 48(6), 2055-2074.
- [10] Wu, B., Luo, Y., Feng, Y., Zhu, C., & Yang, P. (2023). Design and thermodynamic analysis of solid oxide fuel cells–internal combustion engine combined cycle system based on Two-Stage waste heat preheating and EGR. Fuel, 342, 127817.