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Effect of turbulator modifications on the thermal performance of cost-effective alternative solar air heater

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  • Afshari, Faraz
  • Sözen, Adnan
  • Khanlari, Ataollah
  • Tuncer, Azim Doğuş
  • Şirin, Ceylin

Abstract

Over the past years, there has been a huge growth in the solar energy research, development and progress, due to being a renewable, economical and non-polluting energy source. In this research, different design and placement of turbulators inside a cost-effective tube-type solar air heater (TSAH) has been analyzed to upgrade thermal performance. Both experimental and CFD analysis have been performed in order to survey the performance of solar heating systems. Numerical method has been done by utilizing Fluent program in order to simulate real models and also verified with experimental results. It is proposed to improve the thermal efficiency of TSAH by integrating turbulators in different modifications. According to the experimental outcomes maximum instantaneous heater efficiency was reached to 72.41%. Also, experimental and numerical average temperature difference values in TSAHs varied in the range of 9.16–14.54 °C and 9.50–14.95 °C, respectively. The experimental and numerical simulation results exhibited successful design of this simple and inexpensive alternative hot air generation system. Manufactured simple-structured TSAHs in the present work have acceptable thermal performance in comparison to more complex solar heaters in the literature. This type of solar heater could be used in different applications such as; drying, greenhouse heating, space heating and air preheating.

Suggested Citation

  • Afshari, Faraz & Sözen, Adnan & Khanlari, Ataollah & Tuncer, Azim Doğuş & Şirin, Ceylin, 2020. "Effect of turbulator modifications on the thermal performance of cost-effective alternative solar air heater," Renewable Energy, Elsevier, vol. 158(C), pages 297-310.
    • Handle: RePEc:eee:renene:v:158:y:2020:i:c:p:297-310
    DOI: 10.1016/j.renene.2020.05.148
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    References listed on IDEAS

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    3. Tuncer, Azim Doğuş & Khanlari, Ataollah & Sözen, Adnan & Gürbüz, Emine Yağız & Şirin, Ceylin & Gungor, Afsin, 2020. "Energy-exergy and enviro-economic survey of solar air heaters with various air channel modifications," Renewable Energy, Elsevier, vol. 160(C), pages 67-85.
    4. Khanlari, Ataollah & Tuncer, Azim Doğuş & Sözen, Adnan & Aytaç, İpek & Çiftçi, Erdem & Variyenli, Halil İbrahim, 2022. "Energy and exergy analysis of a vertical solar air heater with nano-enhanced absorber coating and perforated baffles," Renewable Energy, Elsevier, vol. 187(C), pages 586-602.
    5. Ravanbakhsh, Mohammad & Gholizadeh, Mohammad & Rezapour, Mojtaba, 2023. "3E thermodynamic modeling and optimization a novel of ARS-CPVT with the effect of inserting a turbulator in the solar collector," Renewable Energy, Elsevier, vol. 209(C), pages 591-607.
    6. Salman, Mohammad & Chauhan, Ranchan & Kim, Sung Chul, 2021. "Exergy analysis of solar heat collector with air jet impingement on dimple-shape-roughened absorber surface," Renewable Energy, Elsevier, vol. 179(C), pages 918-928.
    7. Afshari, Faraz & Khanlari, Ataollah & Tuncer, Azim Doğuş & Sözen, Adnan & Şahinkesen, İstemihan & Di Nicola, Giovanni, 2021. "Dehumidification of sewage sludge using quonset solar tunnel dryer: An experimental and numerical approach," Renewable Energy, Elsevier, vol. 171(C), pages 784-798.
    8. Nidhul, Kottayat & Yadav, Ajay Kumar & Anish, S. & Arunachala, U.C., 2022. "Thermo-hydraulic and exergetic performance of a cost-effective solar air heater: CFD and experimental study," Renewable Energy, Elsevier, vol. 184(C), pages 627-641.
    9. Çiftçi, Erdem & Khanlari, Ataollah & Sözen, Adnan & Aytaç, İpek & Tuncer, Azim Doğuş, 2021. "Energy and exergy analysis of a photovoltaic thermal (PVT) system used in solar dryer: A numerical and experimental investigation," Renewable Energy, Elsevier, vol. 180(C), pages 410-423.
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    11. Al-Zahrani, Salman, 2023. "Thermal performance augmentation of solar air heater with curved path," Energy, Elsevier, vol. 284(C).
    12. Khanlari, Ataollah & Sözen, Adnan & Afshari, Faraz & Tuncer, Azim Doğuş, 2021. "Energy-exergy and sustainability analysis of a PV-driven quadruple-flow solar drying system," Renewable Energy, Elsevier, vol. 175(C), pages 1151-1166.

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