Exergy-Based Sustainability Assessment of ORC Integration for Waste Heat Recovery in Combined Cycle Power Plants
DOI:
https://doi.org/10.51976/cmcb1k75Keywords:
Exergy analysis, Organic Rankine Cycle, Environmental sustainability, Efficiency, Waste heatAbstract
A comprehensive energy and exergy analysis of a combined-cycle power plant (CCPP) operating in both separate and integrated modes is presented in this study. The integration entails the utilization of the exhaust gases in an Organic Rankine Cycle (ORC) boiler to recover waste thermal energy, thereby improving the overall efficiency of the system. Comparing the standalone mode to the ORC-integrated CCPP, the energy analysis results indicated a substantial increase in both thermal efficiency and net work output. By identifying and quantifying irreversibilities across components, exergy analysis provided additional insights into the system's performance. This integrated configuration exhibited superior exergy efficiency, which led to improved fuel utilization. Furthermore, the integration enhances environmental sustainability by reducing the system's carbon footprint through enhanced waste heat recovery. The proposed ORC-integrated CCPP design is a promising solution for efficient and eco-friendly power generation, as it not only optimizes energy usage but also aligns with sustainable development objectives.
References
[1] Wang, M., Jing, R., Zhang, H., Meng, C., Li, N. and Zhao, Y., 2018. An innovative Organic Rankine Cycle (ORC) based Ocean Thermal Energy Conversion (OTEC) system with performance simulation and multi-objective optimization. Applied Thermal Engineering, 145, pp.743-754.Rosen, M.A., 2004. Exergy analysis of energy systems.
[2] Rosen, M.A. and Dincer, I., 1997. On exergy and environmental impact. International Journal of Energy Research, 21(7), pp.643-654.
[3] Chen, Y., Wu, Y., Liu, X., Ma, J., Liu, D., Chen, X. and Liu, D., 2024. Energy, exergy and economic (3E) analysis of a novel integration process based on coal-fired power plant with CO2 capture & storage, CO2 refrigeration, and waste heat recovery. Energy, 299, p.131443.
[4] Quoilin, S., Van Den Broek, M., Declaye, S., Dewallef, P. and Lemort, V., 2013. Techno-economic survey of Organic Rankine Cycle (ORC) systems. Renewable and sustainable energy reviews, 22, pp.168-186.
[5] Bejan, A., and Ikegami, Y. 1998. On the thermodynamic optimization of power plants with heat transfer and fluid flow irreversibilities.
[6] Lemmens, S., 2017. Technological innovation in the energy sector: Case of the organic rankine cycle. University of Antwerp.
[7] Wang, E.H., Zhang, H.G., Fan, B.Y., Ouyang, M.G., Zhao, Y. and Mu, Q.H., 2011. Study of working fluid selection of organic Rankine cycle (ORC) for engine waste heat recovery. Energy, 36(5), pp.3406-3418.
[8] Mu, Y., Zhang, Y., Deng, N. and Nie, J., 2015. Experimental study of a low-temperature power generation system in an organic Rankine cycle. Journal of Energy Engineering, 141(3), p.04014017.
[9]BBao, J. and Zhao, L., 2013. A review of working fluid and expander selections for organic Rankine cycle. Renewable and sustainable energy reviews, 24, pp.325-342.ao, J., & Zhao, L. (2013). Challenges in ORC integration. Energy.
[10] Yari, M., Mehr, A.S., Zare, V., Mahmoudi, S.M.S. and Rosen, M.A., 2015. Exergoeconomic comparison of TLC (trilateral Rankine cycle), ORC (organic Rankine cycle) and Kalina cycle using a low grade heat source. Energy, 83, pp.712-722.
[11] Mishra, A., Arora, B.B. & Arora, A. Exergy-based sustainability analysis of combined cycle gas turbine plant integrated with double-effect vapor absorption refrigeration system. J Braz. Soc. Mech. Sci. Eng. 46, 20 (2024). https://doi.org/10.1007/s40430-023-04600-4
[12] Ahmadi, P., Dincer, I. and Rosen, M.A., 2011. Exergy, exergoeconomic and environmental analyses and evolutionary algorithm based multi-objective optimization of combined cycle power plants. Energy, 36(10), pp.5886-5898.
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