An experimental investigation has been carried out for turbulent flow in a tube with perforated twisted tape inserts. The mild steel twisted tape inserts with circular holes of different diameters (i.e., perforation) are used in the flow field. An intensive laboratory study is conducted for heat transfer and pressure drop characteristics in the tubes for turbulent flow with various airflow rates. Heat transfer and pressure drop data are engendered for a wide range Reynolds number . Tube wall temperature, pressure drop, air velocity, and its temperature are measured both for plain tube and for tube with perforated twisted tape inserts. Heat transfer coefficients, Nusselt number, pumping power, and heat transfer effectiveness are calculated for both cases. Experimental results showed that perforated twisted inserts of different geometry in a circular tube enhanced the heat transfer rate with an increase in friction factor and pumping power for turbulent flow. The pumping power, heat transfer coefficient, and effectiveness in the tube with the twisted tape inserts are found to increase up to 1.8, 5.5, and 4.0 times of those for the plain tube for same Reynolds number, respectively. Finally, a correlation is developed for prediction of the heat transfer rate for turbulent flow through a circular tube with perforated twisted tape inserts.
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e-mail: jamal239@yahoo.com
e-mail: awazed@gmail.com
e-mail: ahmed@um.edu.my
e-mail: nukman@um.edu.my
e-mail: tyusoff@um.edu.my
e-mail: rashid@me.buet.ac.bd
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Enhancement and Prediction of Heat Transfer Rate in Turbulent Flow Through Tube With Perforated Twisted Tape Inserts: A New Correlation
J. U. Ahamed,
J. U. Ahamed
Department of Mechanical Engineering,
e-mail: jamal239@yahoo.com
Chittagong University of Engineering and Technology (CUET)
, Chittagong 4349, Bangladesh
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M. A. Wazed,
M. A. Wazed
Department of Engineering Design and Manufacture,
e-mail: awazed@gmail.com
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysia
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S. Ahmed,
S. Ahmed
Department of Engineering Design and Manufacture,
e-mail: ahmed@um.edu.my
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysia
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Y. Nukman,
Y. Nukman
Department of Engineering Design and Manufacture,
e-mail: nukman@um.edu.my
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysia
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T. M. Y. S. Tuan Ya,
T. M. Y. S. Tuan Ya
Department of Engineering Design and Manufacture,
e-mail: tyusoff@um.edu.my
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysia
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M. A. R. Sarkar
M. A. R. Sarkar
Department of Mechanical Engineering,
e-mail: rashid@me.buet.ac.bd
Bangladesh University of Engineering and Technology (BUET)
, Dhaka 1000, Bangladesh
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J. U. Ahamed
Department of Mechanical Engineering,
Chittagong University of Engineering and Technology (CUET)
, Chittagong 4349, Bangladeshe-mail: jamal239@yahoo.com
M. A. Wazed
Department of Engineering Design and Manufacture,
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysiae-mail: awazed@gmail.com
S. Ahmed
Department of Engineering Design and Manufacture,
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysiae-mail: ahmed@um.edu.my
Y. Nukman
Department of Engineering Design and Manufacture,
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysiae-mail: nukman@um.edu.my
T. M. Y. S. Tuan Ya
Department of Engineering Design and Manufacture,
University of Malaya (UM)
, 50603 Kuala Lumpur, Malaysiae-mail: tyusoff@um.edu.my
M. A. R. Sarkar
Department of Mechanical Engineering,
Bangladesh University of Engineering and Technology (BUET)
, Dhaka 1000, Bangladeshe-mail: rashid@me.buet.ac.bd
J. Heat Transfer. Apr 2011, 133(4): 041903 (9 pages)
Published Online: January 14, 2011
Article history
Received:
March 8, 2010
Revised:
September 11, 2010
Online:
January 14, 2011
Published:
January 14, 2011
Citation
Ahamed, J. U., Wazed, M. A., Ahmed, S., Nukman, Y., Ya, T. M. Y. S. T., and Sarkar, M. A. R. (January 14, 2011). "Enhancement and Prediction of Heat Transfer Rate in Turbulent Flow Through Tube With Perforated Twisted Tape Inserts: A New Correlation." ASME. J. Heat Transfer. April 2011; 133(4): 041903. https://doi.org/10.1115/1.4002635
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