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Performance optimization for solar photovoltaic thermal system with spiral rectangular absorber using Taguchi method.

Jitendra Satpute1, Srinidhi Campli2, Dhinesh Balasubramanian3

  • 1Suman Ramesh Tulsiani Technical Campus Kamshet, Pune, 410405, India. jitusatpute12345@gmail.com.

Scientific Reports
|October 11, 2024
PubMed
Summary

This study optimized solar thermal collector performance using the Taguchi method. The rectangular spiral absorber design significantly impacts efficiency, with higher flow rates improving thermal recovery and lowering PV temperature.

Keywords:
Energy efficiencyOptimizationPhotovoltaic thermal systemS/N ratioSpiral rectangular absorberThermal energy recovery

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Area of Science:

  • Renewable Energy Engineering
  • Thermodynamics
  • Materials Science

Background:

  • Solar thermal collectors are crucial for renewable energy generation.
  • Optimizing operating parameters is key to maximizing efficiency in solar energy systems.
  • Photovoltaic-Thermal (PVT) systems offer dual energy generation but require careful parameter tuning.

Purpose of the Study:

  • To determine optimal operating parameters for a solar thermal collector with a rectangular spiral absorber using the Taguchi method.
  • To analyze the influence of absorber design, solar radiation, and mass flow rate on system performance.
  • To evaluate the electrical and thermal efficiencies of the optimized PVT system.

Main Methods:

  • Application of the Taguchi method for experimental design and parameter optimization.
  • Manipulation of controllable parameters: mass flow rate, solar radiation, and absorber design.
  • Assessment of system effectiveness through PV temperature and outlet water temperature measurements.

Main Results:

  • Absorber design was the most significant factor for PV temperature (69.19%) and water output temperature (73.63%).
  • High solar radiation and flow rates enhanced thermal efficiency (63.56%), while lower rates and radiation favored electrical efficiency (14.57%).
  • Predictive regression models showed high accuracy (R² > 97%) with minimal error (<0.68%).

Conclusions:

  • The rectangular absorber design is highly effective in PVT systems.
  • Higher mass flow rates reduce PV temperature and improve thermal energy recovery.
  • The study provides a foundation for further exergy, environmental, and economic analyses.