The Impact of Circular Holes in Twisted Tape Inserts on Forced Convection Heat Transfer
Authors
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Department of Mechanical Engineering, Dr. D. Y. Patil Institute of Technology, Pimpri, Pune - 411018, Maharashtra ,IN
Anant Sidhappa Kurhade -
Department of Mechanical Engineering, PCET’s Pimpri Chinchwad College of Engineering and Research, Ravet, Pune - 412101, Maharashtra ,INGulab Dattrao Siraskar
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Department of Mechanical Engineering, Marathwada Mitramandal's College of Engineering, Karvenagar, Pune - 411052, Maharashtra ,INSwapna Swapnil Jawalkar
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Department of Mechanical Engineering, Marathwada Mitramandal's College of Engineering, Karvenagar, Pune - 411052, Maharashtra ,INTushar Gadekar
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Department of Mechanical and Industrial Engineering, College of Engineering, National University of Science and Technology, Muscat ,OMParimal Sharad Bhambare
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School of Engineering and Technology, PCET’s Pimpri Chinchwad University, Sate, Pune - 412106, Maharashtra ,INRamdas Biradar
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Department of Mechanical Engineering, Marathwada Mitramandal's College of Engineering, Karvenagar, Pune - 411052, Maharashtra ,INRahul Shivaji Yadav
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Department of Mechanical Engineering, Dr. D. Y. Patil Institute of Technology, Pimpri, Pune - 411018, Maharashtra ,INShital Yashwant Waware
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Department of Chemistry, Dr. D. Y. Patil Institute of Technology, Pimpri, Pune - 411018, Maharashtra ,INChaitalee Naresh Mali
DOI:
https://doi.org/10.18311/jmmf/2024/45505Keywords:
Heat Exchanger, Heat Transfer Rate, Nusselt Number, Reynold Number, Twist RatioAbstract
This study investigated heat transfer and friction characteristics in a forced convection system using wavy twisted tape inserts with circular holes. The inserts, with twist ratios (TR) of 8.5, 7.5, and 6.5, were placed inside a test pipe to create turbulent flow. The tapes measured 700 mm in length and 18 mm in width, while the test pipe had an outer diameter of 35 mm and an inner diameter of 30 mm, with a test section length of 700 mm. Airflow rates were adjusted to achieve different bulk mean temperatures. Experimental data were used to develop new correlations for the Nusselt number and friction factor. The Reynolds number (Re) ranged from 4,000 to 14,000. Comparisons between the wavy twisted tape inserts with varying twist ratios and pitches and a smooth tube showed that the highest heat transfer rate was achieved with a twist ratio of 6.5.
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Accepted 2024-08-29
Published 2024-10-16
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