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<p>The heat exchanger plays a vital role in every thermal system. The growing emphasis on enhancing heat transfer augmentation techniques has sparked increased interest in the advancement of high-performance thermal systems. The present article describes how the modified twisted tape insert will affect the Nusselt number and the friction factor. The study was carried out to resolve the heat transfer coefficient for the tube side and the friction factor using inserted twisted tape. Twisted tape finds extensive application in improving heat transfer within heat exchangers, as it boosts heat transfer through the creation of a swirling flow in the flow channel. Numerical analysis was conducted under turbulent flow conditions, employing twisted tape inserts with various ratios twist (<i>y</i> = 5) while maintaining a constant flow rate. The Nusselt numbers were determined to be 2.88, 2.78, 2.5, 2.36, 2.39 and 2.29 times better than the values observed for plain tubes when using V-cut and rectangular-cut twisted tape, perforated stainless steel twisted tape, copper, aluminum and stainless steel respectively. The obtained results have been authenticated using conventional correlations existing in the literature.</p>

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Experimental investigation for twisted tape as an augmentation device in plain tube

  • 期刊论文

  • 发表日期：

    2025年6月10日

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  • Sudesh Ayare,
  • Sonali Jadhav,
  • Jayesh Mapara

摘要

The heat exchanger plays a vital role in every thermal system. The growing emphasis on enhancing heat transfer augmentation techniques has sparked increased interest in the advancement of high-performance thermal systems. The present article describes how the modified twisted tape insert will affect the Nusselt number and the friction factor. The study was carried out to resolve the heat transfer coefficient for the tube side and the friction factor using inserted twisted tape. Twisted tape finds extensive application in improving heat transfer within heat exchangers, as it boosts heat transfer through the creation of a swirling flow in the flow channel. Numerical analysis was conducted under turbulent flow conditions, employing twisted tape inserts with various ratios twist (y = 5) while maintaining a constant flow rate. The Nusselt numbers were determined to be 2.88, 2.78, 2.5, 2.36, 2.39 and 2.29 times better than the values observed for plain tubes when using V-cut and rectangular-cut twisted tape, perforated stainless steel twisted tape, copper, aluminum and stainless steel respectively. The obtained results have been authenticated using conventional correlations existing in the literature.