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<p>The inefficiency of photovoltaic collector designs presents a significant challenge, particularly in hot climates. Therefore, this study undertakes a comprehensive analysis focusing on energy, exergy, entropy, and economical (4E) aspects of an innovative collector. The newly developed collector incorporates innovative design features, including ribbed and petal-patterned inner and outer surfaces, as well as helical twisted tapes. Furthermore, the study utilizes nanofluids and nanophase change materials, employing silicon carbide at volume concentrations of 0.6% and 1%. The experiment was conducted using an indoor solar simulator with irradiances of (400 to 1000) W/m<sup>2</sup>, flow rates of (0.01 to 0.085) kg/s, and various coolant types. The results demonstrated a positive correlation between all studied parameters and flow rates, except for thermal exergy efficiency. When solar irradiance reaches 1000&#xa0;W/m<sup>2</sup>, the systems' electrical energy and exergy efficiency face a decline, while at the other solar irradiances, the relationship is positive. Utilizing advanced cooling techniques improves all the studied parameters. The system obtained its optimal overall energy and exergy efficiencies at 97.34% and 11.86%, respectively. Incorporating silicon carbide-enhanced nanofluids and nanophase change materials makes the system more cost-effective. Specifically, the most economical configuration was achieved with a coolant consisting of 1% nanophase change material and 0.6% nanofluid, resulting in the lowest cost-effectiveness factor of 0.820.</p>

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4E Investigation of a Solar Collector Design Featuring Ribs, Petals, and Helical Twisted Tapes in a Photovoltaic Thermal System

  • 期刊论文

  • 发表日期：

    2025年1月18日

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  • Banw Omer Ahmed,
  • Adnan Ibrahim,
  • Hariam Luqman Azeez,
  • Mahmoud Jaber,
  • Ali H. A. Al-Waeli,
  • Hasila Jarimi

摘要

The inefficiency of photovoltaic collector designs presents a significant challenge, particularly in hot climates. Therefore, this study undertakes a comprehensive analysis focusing on energy, exergy, entropy, and economical (4E) aspects of an innovative collector. The newly developed collector incorporates innovative design features, including ribbed and petal-patterned inner and outer surfaces, as well as helical twisted tapes. Furthermore, the study utilizes nanofluids and nanophase change materials, employing silicon carbide at volume concentrations of 0.6% and 1%. The experiment was conducted using an indoor solar simulator with irradiances of (400 to 1000) W/m2, flow rates of (0.01 to 0.085) kg/s, and various coolant types. The results demonstrated a positive correlation between all studied parameters and flow rates, except for thermal exergy efficiency. When solar irradiance reaches 1000 W/m2, the systems' electrical energy and exergy efficiency face a decline, while at the other solar irradiances, the relationship is positive. Utilizing advanced cooling techniques improves all the studied parameters. The system obtained its optimal overall energy and exergy efficiencies at 97.34% and 11.86%, respectively. Incorporating silicon carbide-enhanced nanofluids and nanophase change materials makes the system more cost-effective. Specifically, the most economical configuration was achieved with a coolant consisting of 1% nanophase change material and 0.6% nanofluid, resulting in the lowest cost-effectiveness factor of 0.820.