Evaluation of an integrated solar-geothermal energy system to provide power, heat and cooling

Document Type : Original Article

Author

• Amin Kardgar

Department of Mech. Eng.-Faculty of Engineering and Technology-University of Mazandaran-Babolsar-Iran

10.22067/jacsm.2022.76152.1108

Abstract

In the present research, an integrated solar-geothermal energy system is proposed. This energy system consists of a single flash geothermal cycle, single effect absorption refrigeration cycle, heat pump cycle for drying process, solar energy saving comportment, two steam turbines for power production, cooling system for domestic usage and heating for industrial application. The aim of this system is providing cooling and heating for domestic and industrial appliances and drying food products. The energy and exergy efficiency of the system were 92% and 57%, respectively. The effect of parameters such as surrounding temperature, the temperature and the mass flow rate of geothermal tank, and the outlet water temperature of the generator of absorbtion cooling system on energy and exergy efficiency of the system were investigated. The overall energy efficiency does not change by increasing surrounding temperature from 270 K to 320 K, but overall exergy efficiency, turbine 1, and turbine 2 decrease almost 7%, 3% and 4%, respectively.

Keywords

• Exergy
• Geothermal
• Solar energy
• Absorption refrigeration
• Power production

Main Subjects

• Thermodynamics

---

References

[1]   F. Cao, H. Li, Q. Ma, and L. Zhao, , "Design and simulation of a geothermal-solar combined chimney power plant", Energy Conversion and Managmnet, vol. 84, Pp.186–195, (2014).

[2]   J. Choi, B. Kang, H. Cho, "Performance comparison between R22 and R744 solar-geothermal hybrid heat pumps according to heat source conditions", Renewable Energy, vol. 71, Pp. 414–424, (2014).

[3]   H. Ghasemi, E. Sheu, A. Tizzanini, M. Paci, and A. Mitsos, "Hybrid solar-geothermal power generation: Optimal retrofitting", Applied Energy, vol. 131, Pp. 158–170, (2014).

[4]   M. Ayub, A. Mitsos, and H. Ghasemi, "Thermo-economic analysis of a hybrid solar-binary geothermal powerplant", Energy, vol. 87, Pp. 326–335, (2015).

[5]   N. Shokati, F. Ranjbar, "Thermodynamic and Exergoeconomic Analysis of Combination of Single-Flash Geothermal Power Cycle with Kalina and ORC with different Organic Fluids", Journal of Solid Fluid Mechanics vol. 5, Pp. 177–192, (1394).

[6]   F. Heberle, M. Hofera, Ni. Ürlings, H. Schröder, Th. Anderlohr, and D. Brüggemanna, "Techno-economic analysis of a solar thermal retrofit for an air-cooled geothermal Organic Rankine Cycle power plant", Renewable Energy, vol. 113, Pp. 494–502, (2017).

[7]   F. Calise, M. D. D’Accadia, A. MacAluso, A. Piacentino, and L. Vanoli, "Exergetic and exergoeconomic analysis of a novel hybrid solar-geothermal polygeneration system producing energy and water", Energy Conversion and  Management, vol. 115, Pp. 200–220, (2016).

[8]   S. M. Alirahmi, S. Rahmani Dabbagh, P. Ahmadi, and S. Wongwises, "Multi-objective design optimization of a multi-generation energy system based on geothermal and solar energy", Energy Conversion and  Management,  vol. 205, Pp. 112426, (2020).

[9]   R. Elghamry, H. Hassan, "Impact a combination of geothermal and solar energy systems on building ventilation, heating and output power: Experimental study", Renewable Energy, vol. 152, Pp. 1403–1413, (2020).

[10] K. H. M. Al-Hamed, I. Dincer, "Investigation of a concentrated solar-geothermal integrated system with a combined ejector-absorption refrigeration cycle for a small community", International Journal of Refrigeration vol. 106, Pp. 407–426, (2019).

[11] S. Zabihollah, D. Rafiee, and F. Torabi, "Geothermal energy and its combination with other renewable energies in combined cycle of power, refrigeration and heating", Scientific Journal of Mechanical Engineering, vol. 29, Pp. 79–89, (1399).

[12] O. Siddiqui, I. Dincer, "A new solar and geothermal based integrated ammonia fuel cell system for multigeneration", Internation Journal of Hydrogen Energy, (2020). doi:10.1016/j.ijhydene.2020.02.109

[13] V. Okati, A. Ebrahimi-Moghadam, A. Behzadmehr, and M. Farzaneh-Gord, "Proposal and assessment of a novel hybrid system for water desalination using solar and geothermal energy sources", Desalination, vol. 467, Pp. 229–244, (2019).

[14] M. A. Ald, S. K. Aria, and S. Jafrmadar, "Analysis of a new hybrid arrangement by using geothermal wells of Sabalan and the LNG cool enegy", Amirkabir Journal of Mechcanical Enginering, vol. 52, Pp. 525–544, (1399).

[15] M. Ciani Bassetti, D. Consoli, G. Manente, and A. Lazzaretto, "Design and off-design models of a hybrid geothermal-solar power plant enhanced by a thermal storage", Renewable Energy, vol. 128, Pp. 460–472, (2018).

[16] J. D. McTigue, D. Wendt, K. Kitz, J. Gunderson, Ni. Kincaid, G. Zhua, "Assessing geothermal/solar hybridization – Integrating a solar thermal topping cycle into a geothermal bottoming cycle with energy storage", Applied Thermal Engineering, vol. 171, Pp. 115121, (2020).

[17] A. Keshvarparast, S. S. M. Ajarostaghi, and M. A. Delavar, "Thermodynamic analysis the performance of hybrid solar-geothermal power plant equipped with air-cooled condenser", Applied Thermal Engineering, vol. 172, Pp. 115160, (2020).

[18] M. Sandali, A. Boubekri, D. Mennouche, and N. Gherraf, "Improvement of a direct solar dryer performance using a geothermal water heat exchanger as supplementary energetic supply. An experimental investigation and simulation study", Renewable Energy, vol. 135, Pp. 186–196, (2019).

[19] Taherifard A, Shahab M. Case Study: Geothermal power plant of Meshkinshahr. Energy Econ. 1389;125(1):31–9. (In Persian)