Energy and Exergy Investigation of a Multigeneration System Based on Solar and Geothermal Energy Sources

Document Type : Research Paper

Authors

Department of Mechanical Engineering, Engineering Faculty, Urmia University, Urmia, Iran

Abstract

The research focuses on evaluating the energetic and exergetic sights of a newly developed multigeneration system utilizing geothermal energy and PVT solar collectors to create electricity, cooling, heat, hydrogen, and fresh water. This setup includes an organic Rankine cycle, a single-effect absorption chiller, a heat pump, a RO desalination unit and a PEM electrolyzer. The EES software was utilized to analyze thermodynamic and various parameters. Findings indicate that the system achieves energetic and exergetic outcomes of 10.29% and 36.77%, respectively. The net power output of the system totals 2004.86 kW, primarily driven by the ORC turbine. In addition, the cooling system realizes energetic and exergetic COPs of 0.54 and 0.22 based on the specified hypothesis. The system generates hydrogen at a daily rate of 796.8 kg and freshwater at a rate of 5.52 kg/s. Exergy destruction rate analysis reveals that the organic Rankine cycle suffers the most significant exergy loss.

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References

[1] Izadyar N, Miller W, Rismanchi B, Garcia-Hansen V, Matour S. Balcony design and surrounding
constructions effects on natural ventilation performance and thermal comfort using CFD simulation: a case study. Journal of Building Performance Simulation. 2023;16(5):537–556.
[2] Van Ruijven BJ, De Cian E, Sue Wing I. Amplification of future energy demand growth due to climate change. Nature communications. 2019;10(1):2762.
[3] Gupta DK, Kumar R, Kumar N. Performance analysis of PTC field based ejector organic Rankine cycle integrated with a triple pressure level vapor absorption system (EORTPAS). Engineering Science and Technology, an International Journal. 2020;23(1):82–91.
[4] Heidarnejad P, Genceli H, Asker M, Khanmohammadi S. A comprehensive approach for optimizing a biomass assisted geothermal power plant with freshwater production: Techno-economic and environmental evaluation. Energy Conversion and Management. 2020;226:113514.
[5] Assareh E, Alirahmi SM, Ahmadi P. A Sustainable model for the integration of solar and geothermal energy boosted with thermoelectric generators (TEGs) for electricity, cooling and desalination purpose. Geothermics. 2021;92:102042.
[6] Alirahmi SM, Assareh E. Energy, exergy, and exergoeconomics (3E) analysis and multi-objective optimization of a multi-generation energy system for day and night time power generation-Case study: Dezful city. International Journal of Hydrogen Energy. 2020;45(56):31555–31573.
[7] Dezhdar A, Assareh Ea. Modeling, Optimization and exergoeconomic analysis a multiple energy production system based on solar Energy, Wind Energy and Ocean Thermal Energy Conversion (OTEC) in the onshore region. Journal of
Energy Conversion. 2020;7(3).
[8] Boroomand A, Assareh E. Hybrid of Brayton cycle and a Heliostat field collector (HFC) for Electricity, freshwater and cooling bar production. Journal of Energy Conversion. 2021;8(3):13–29.
[9] Prajapati M, Shah M. Geothermal-solar hybrid systems for hydrogen production: A systematic review. International Journal of Hydrogen Energy. 2024;67:842–851.
[10] Mohammadi M, Mahmoudan A, Nojedehi P, Hoseinzadeh S, Fathali M, Garcia DA. Thermoeconomic assessment and optimization of a multigeneration system powered by geothermal and solar energy. Applied Thermal Engineering.
2023;230:120656.
[11] Klein SA. Engineering Equation Solver (EES) V9, F-Chart Software. Madison, USA; 2015.
Hydrogen, Fuel Cell & Energy Storage
Volume 12, Issue 3
October 2025
Pages 193-202

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