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Numerical Modeling of Effective Parameters on the Performance and Efficiency of Energy Piles

Sobhdam, Mohammad Hossein | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57566 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Ahmadi, Mohammad Mehdi
  7. Abstract:
  8. In recent years, with the growth of industrial societies, the amount of energy consumption in the world has been increasing. On the other hand, the most consumed energy sources in the world are non-renewable energy sources. For this reason, governments and industries have invested to facilitate and make renewable energy sources cheaper. One of these renewable energies is geothermal energy, which is one of the most economical ways to use this energy, using heat exchange systems in piles and foundations. Using a heat exchange fluid, energy piles transfer the heat of the earth's surface to the ground with a lower temperature in the hot seasons of the year and use the thermal energy of the ground for heating during the cold seasons. Various construction methods have been used to implement energy piles and many parameters are involved in their design. In this research, the effect of each of these parameters on the thermal performance of the energy pile is investigated using 3D numerical modeling and using the finite element method with COMSOL. Flow rate, pile length, pipe diameter and thickness and center-to-center distance of pipes are the parameters that have been investigated in this research. The obtained results have shown that reducing the flow rate, increasing the length of the pile, reducing the diameter and thickness of the pipe improves the thermal performance of the energy pile. Also, the short distance from the center to the center of the pipes and causing thermal interference can have a negative effect on the thermal performance of the energy pile
  9. Keywords:
  10. Geothermal Energy ; Energy Pile ; Thermal Performance ; Numerical Modeling ; Heat Exchangers ; Renewable Energy Resources

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