Simulations and Optimizations for a Low-Temperature Hybrid Geothermal-Solar Power Plant

Authors

  • Abdelghani Djemaa Department of Mechanical Engineering, Laboratory of Renewable Energy and Durability Development, University of Freres Mentouri Constantine 1, Algeria
  • Abderrezak Merabet Department of Mechanical Engineering, Laboratory of Mechanical, University of Freres Mentouri Constantine 1, Algeria
  • Redha Rebhi LERM - Renewable Energy and Materials Laboratory, University of Medea, Medea, 26000, Algeria
  • Giulio Lorenzini Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze, 181/A, Parma 43124, Italy
  • Rachid Bessaih Department of Mechanical Engineering, Laboratory LEAP, University of Freres Mentouri Constantine 1, Algeria
  • Younes Menni Department of Technology, University Centre of Naama, P.O. Box 66, Naama 45000, Algeria

DOI:

https://doi.org/10.37934/arfmts.90.2.109123

Keywords:

Solar geothermal system, solar energy, hybrid power plant, optimization, simulation

Abstract

The possibility of producing electrical power in Algeria from low geothermal and solar heat resources is addressed using a hybrid power generation hypothetical system based on a combined flash-binary cycle with equal contributions from solar and geothermal energy. To improve their efficiency, energy integration techniques were used to recover waste heat from the steam turbine by preheating the working fluid R134a in the bottoming binary, which represents 30% of the energy acquired from the ORC cycle. The Aspen HYSYS application was used for power cycle simulation and modeling. A contact between the wane pressure and the pressure at the ORC binary cycle turbine's intake must be made to obtain the greatest power out of the hybrid power plant. According to the findings, the perfect flashing pressure of the flash cycle and the optimal intake pressure of the working fluid to the binary cycle's turbine are 450 kPa and 3340 kPa, respectively. The overall power generation and thermal efficiency of the hybrid plant were calculated to be 3823 kW and 16.1 %, respectively, at these pressures, demonstrating a significant thermodynamic advantage over each of the component systems.

Author Biographies

Abdelghani Djemaa, Department of Mechanical Engineering, Laboratory of Renewable Energy and Durability Development, University of Freres Mentouri Constantine 1, Algeria

abdelgh.dje.con@gmail.com

Abderrezak Merabet, Department of Mechanical Engineering, Laboratory of Mechanical, University of Freres Mentouri Constantine 1, Algeria

mera.abder.univ@gmail.com

Redha Rebhi, LERM - Renewable Energy and Materials Laboratory, University of Medea, Medea, 26000, Algeria

rere.univ26000@gmail.com

Giulio Lorenzini, Department of Engineering and Architecture, University of Parma, Parco Area delle Scienze, 181/A, Parma 43124, Italy

giulio.lorenzini@unipr.it

Rachid Bessaih, Department of Mechanical Engineering, Laboratory LEAP, University of Freres Mentouri Constantine 1, Algeria

rabeas.dmelufmc@gmail.com

Younes Menni, Department of Technology, University Centre of Naama, P.O. Box 66, Naama 45000, Algeria

menniyounes.cfd@gmail.com

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Published

2022-01-05

How to Cite

Abdelghani Djemaa, Abderrezak Merabet, Redha Rebhi, Giulio Lorenzini, Rachid Bessaih, & Younes Menni. (2022). Simulations and Optimizations for a Low-Temperature Hybrid Geothermal-Solar Power Plant. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 90(2), 109–123. https://doi.org/10.37934/arfmts.90.2.109123

Issue

Vol. 90 No. 2: February (2022)

Section

Articles

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