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March 3, 2026Applications in Engineering ScienceOpen Access

Geometric optimization for better heat recovery from the lower convective zone of salt-gradient solar pond

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Authors

MEMariem ElakroutUniversity of GabèsWAWalid Ben AmaraUniversity of GabèsABAbdallah BouabidiUniversity of Gabès

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Overview

Numerical simulations demonstrate improved heat extraction in salt-gradient solar ponds, suggesting benefits of optimized heat exchanger designs.

Key Points

  • To evaluate the thermal performance of the Lower Convective Zone in a Salt-Gradient Solar Pond and the effects of heat exchanger geometries.
  • Developed a numerical simulation model based on an experimental prototype.
  • Tested four heat exchanger geometries: standard tube, inverted-U, zigzag with three bends, and zigzag with four bends.
  • Varied mass flow rates from 0.039 kg/s to 0.312 kg/s to assess heat transfer efficiency.
  • Increased mass flow rates lowered LCZ temperatures.
  • The zigzag coil with four bends achieved the highest outlet temperature of 75.55°C.
  • Standard configuration resulted in an outlet temperature of 51.38°C, demonstrating significant improvement with optimized designs.

Cite This Study

Elakrout et al. (2026) studied this question.

synapsesocial.com/papers/69a67f1ff353c071a6f0b13dhttps://doi.org/10.1016/j.apples.2026.100312
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