Thermodynamic modelling of a power generation plant using solar concentrators assisted by organic Rankine cycle for João Pessoa city, Brazil
DOI:
https://doi.org/10.24425/ather.2025.154187Abstract
The potential for generating electricity through solar energy makes Brazil a very promising country in this segment, with several possibilities for the use of solar energy, whether in the thermal or photovoltaic part, due to the high incidence of solar radiation throughout much of the country, especially in the Northeast region. In this study, an analysis of the performance of the organic Rankine cycle (ORC) that produces electricity using solar concentrators was performed. The fluids used in the system were classified as dry type toluene, isobutane, isopentane, R227ea, R113, R114, R245fa and R600. During the study, the energy and exergy analysis of the system was conducted for different evaporator pressures (500−2500 kPa), and two types of solar collectors were tested (parabolic trough collector and parabolic compound collector). In addition, a system case study was simulated for radiation and temperature conditions in the city of João Pessoa, Brazil. Based on this analysis, the performance of the cycle components was examined, and the first and second law efficiencies of the system were compared for different configurations. The solar collector (parabolic trough collector) proved to be the most suitable for the studied cycle. With the adequate selection of the refrigerant, collector and evaporation pressure, the first and second law efficiencies of the cycle improve up to 41% and 44%, respectively. For the city of João Pessoa, the highest exergy efficiency occurs in the month of January, the hottest month of the year when the sun shines brightly, and the lowest exergy efficiency occurs in the month of June.References
[1] Colonna, P., Casati, E., Trapp, C., Mathijssen, T., Larjola, J., Turunen-Saaresti, T., & Uusitalo, A. (2015). Organic Rankine cycle power systems: From the concept to current technology, applications, and an outlook to the future. Journal of Engineering for Gas Turbines and Power, 137(1), 1–19. https://doi.org/10.1115/1.4029884
[2] Loni, R., Mahian, O. M., Markides, C. N., Bellos, E., Roux, W. G. L., Kasaeian, A., Najafi, G., & Rajaee, F. (2021). A review of solar-driven organic Rankine cycles: Recent challenges and future outlook. Renewable and Sustainable Energy Reviews, 150, 111410. https://doi.org/10.1016/j.rser.2021.111410
[3] Petrollese, M., Cau, G., & Cocco, D. (2020). The Ottana solar facility: Dispatchable power from small-scale CSP plants based on ORC systems. Renewable Energy, 147, 2932–2943. https://doi.org/10.1016/j.renene.2018.07.013
[4] Ancona, M. A., Bianchi, M., Branchini, L., De Pascale, A., Melino, F., Peretto, A., Poletto, C., & Torricelli, N. (2022). Solar-driven micro-ORC system assessment for residential application. Renewable Energy, 195, 167–181. https://doi.org/10.1016/j.renene.2022.06.007
[5] Delgado-Torres, A. M., & García-Rodríguez, L. (2010). Analysis and optimization of the low-temperature solar organic Rankine cycle (ORC). Energy Conversion and Management, 51(12), 2846–2856. https://doi.org/10.1016/j.enconman.2010.06.022
[6] Jing, L., Gang, P., & Jie, J. (2010). Optimization of low temperature solar thermal electric generation with Organic Rankine Cycle in different areas. Applied Energy, 87(11), 3355–3365. https://doi.org/10.1016/j.apenergy.2010.05.013
[7] Kumar, A., & Shukla, S. K. (2016). Analysis and performance of ORC-based solar thermal power plant using benzene as a working fluid. Procedia Technology, 23, 454–463. https://doi.org/10.1016/j.protcy.2016.03.050
[8] Sonsaree, S., Asaoka, T., Jiajitsawat, S., Aguirre, H., & Tanaka, K. (2018). A small-scale solar organic Rankine cycle power plant in Thailand: Three types of non-concentrating solar collectors. Solar Energy, 162, 541–560. https://doi.org/10.1016/j.solener.2018.01.038
[9] Stand, L. M., Ochoa, G. V., & Forero, J. D. (2021). Energy and exergy assessment of a combined supercritical Brayton cycle–ORC hybrid system using solar radiation and coconut shell biomass as energy source. Renewable Energy, 175, 119–142. https://doi.org/10.1016/j.renene.2021.04.118
[10] Gupta, P. R., Tiwari, A. K., & Said, Z. (2022). Solar organic Rankine cycle and its polygeneration applications – A review. Sustainable Energy Technologies and Assessments, 49, 101732. https://doi.org/10.1016/j.seta.2021.101732
[11] Lakhani, S., Raul, A., & Saha, S. K. (2017). Dynamic modelling of ORC-based solar thermal power plant integrated with multitube shell-and-tube latent heat thermal storage system. Applied Thermal Engineering, 123, 458–470. https://doi.org/10.1016/j.applthermaleng.2017.05.115
[12] Li, J. F., Guo, H., Wu, Y. T., Lei, B., Ye, F., Ma, C. F., Zhang, Y., & Jiao, X. L. (2022). Experimental investigation of solar organic Rankine cycle with parabolic trough concentrator using nitrate salt as heat transfer and storage fluid. International Journal of Energy Research, 46, 6847–6865. https://doi.org/10.1002/er.7628
[13] Ahmadi, A., El Haj Assad, M., Jamali, D. H., Kumar, R., Li, Z. X., Salameh, T., Al-Shabi, M., & Ehyaei, M. A. (2020). Applications of geothermal organic Rankine Cycle for electricity production. Journal of Cleaner Production, 274, 122950. https://doi.org/10.1016/j.jclepro.2020.122950
[14] Saadatfar, B., Fakhrai, R., & Fransson, T. (2014). Conceptual modeling of nanofluid ORC for solar thermal polygeneration. Energy Procedia, 57, 2696–2705. https://doi.org/10.1016/j.egypro.2014.10.301
[15] Rejeb, O., Alirahmi, S. M., Assareh, E., El Haj Assad, M., Jemni, A., Bettayeb, M., & Ghenai, C. (2022). Innovative integrated solar-powered polygeneration system for green hydrogen, oxygen, electricity and heat production. Energy Conversion and Management, 269, 116073. https://doi.org/10.1016/j.enconman.2022.116073
[16] Jiang, Y., Zhang, X., Zhang, Z., Hao, L., Cao, Z., Li, S., Guo, B., Zheng, Y., Dong, C., & Zhao, L. (2024). Performance evaluation and working fluid screening of direct vapor generation for solar ORC using low-global warming potential working fluids. Energies, 17, 3133. https://doi.org/10.3390/en17133133
[17] Maytorena, V. M., & Buentello-Montoya, D. A. (2022). Multiphase simulation and parametric study of direct vapor generation for a solar organic Rankine cycle. Applied Thermal Engineering, 216, 119096. https://doi.org/10.1016/j.applthermaleng.2022.119096
[18] Hepbasli, A. (2008). A key review on exergetic analysis and assessment of renewable energy resources for a sustainable future. Renewable and Sustainable Energy Reviews, 12(3), 593–661. https://doi.org/10.1016/j.rser.2006.10.001
[19] Nafey, A. S., & Sharaf, M. A. (2010). Combined solar organic Rankine cycle with reverse osmosis desalination process: Energy, exergy, and cost evaluations. Renewable Energy, 35(11), 2571–2580. https://doi.org/10.1016/j.renene.2010.03.034
[20] Kalogirou, S. A. (2013). Solar energy engineering: Processes and systems. Academic Press.
[21] Klein, S. A. (1977). Calculation of monthly average insolation on tilted surfaces. Solar Energy, 19(4), 325–329. https://doi.org/10.1016/0038-092X(77)90001-9
