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TECHNICAL PAPERS: Heat Transfer Enhancement

Laminar Flow Heat Transfer and Pressure Drop Characteristics of Power-Law Fluids Inside Tubes With Varying Width Twisted Tape Inserts

[+] Author and Article Information
A. G. Patil

Department of Chemical Engineering, Bharti Vidyapith’s College of Engineering, Dhankawadi, Pune-411 043, Maharashtra, India

J. Heat Transfer 122(1), 143-149 (Aug 18, 1999) (7 pages) doi:10.1115/1.521448 History: Received February 28, 1999; Revised August 18, 1999
Copyright © 2000 by ASME
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References

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Hong,  S. W., and Bergles,  A. E., 1976, “Augmentation of Laminar Flow Heat Transfer in Tubes by Means of Twisted Tape Inserts,” ASME J. Heat Transfer, 98, pp. 251–256.
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Marner, W. J., and Bergles, A. E., 1978, “Augmentation of Tube Side Laminar Flow Heat Transfer by Means of Twisted Tape Inserts, Static Mixer Inserts and Internally Finned Tubes,” Proceedings of Sixth International Heat Transfer Conference, Toronto, Hemisphere, Washington, D.C., Vol. 2, pp. 583–588.
Shivkumar, C., and Raja Rao, M., 1988, “Compound Augmentation of Laminar Flow Heat Transfer to Generalized Power Law Fluids in Spirally Corrugated Tubes by Means of Twisted Tape Inserts,” ASME Proceedings of National Heat Transfer Conference, Houston, Vol.1, ASME, New York, pp. 685–692.
Dasmahapatra, J. K., and Raja Rao, M., 1991, “Laminar Flow Heat Transfer to Generalized Power Law Fluids Inside Circular Tubes Fitted with Regularly Spaced Twisted Tape Elements for Uniform Wall Temperature Condition” Fundamentals of Heat Transfer in Non-Newtonian Fluids, ASME, New York, pp. 51–58.
Date, A. W., and Singham, J. R., 1972, “Numerical Prediction of Friction and Heat Transfer Characteristics of Fully Developed Laminar Flow in Tubes Containing Twisted Tapes,” ASME Paper No. 72-HT-17.
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Shah, R. K., and London, A. L., 1978, “Laminar Flow Forced Convection in Ducts,” Advances in Heat Transfer, Vol. 1, Supplement-1, Academic, New York, pp. 379–381.
Manglik, R. M., and Bergles, A. E., 1987, “A Correlation for Laminar Flow Enhanced Heat Transfer in Uniform Wall Temperature Circular Tubes With Twisted Tape Inserts,” Advances in Enhanced Heat Transfer, Vol. 68, ASME, New York, pp. 19–25.
Zhu  , 1992, “Augmentation of Heat Transfer for Viscous Fluids Using the Turbolator,” Gaoxiao Huaxue Gongcheng Xuebao 6, pp. 56–61 (Chinese).
Mukherjee, R., 1994, “Augmentation of Heat Transfer in Low Reynolds Number Flow Inside Tubes by the Use of Wire-Fin Inserts,” Proceedings of the 10th International Heat Transfer Conference, Institute of Chemical Engineering London, UK, pp. 173–176.
Gibson,  W. D., 1998, “Heat Exchangers: Warming up to Special Needs,” Chem. Eng., 105, No. 13, pp. 45–53.
Monheit, M., 1987, “Experimental Evaluation of the Convective Characteristics of Tubes with Twisted Tape Inserts,” Advances in Enhanced Heat Transfer, AMSE, New York, pp. 11–18.
Al-Fahed,  S., and Chakroun,  W., 1996, “Effect of Tube-Tape Clearance on Heat Transfer for Fully Developed Turbulent Flow in a Horizontal Isothermal Tube,” Int. J. Heat Fluid Flow, 17, No. 2, pp. 173–178.
Al-Fahed,  S., Chamra,  L. M., and Chakroun,  W., 1998, “Pressure Drop and Heat Transfer Comparison for Both Microfin Tube and Twisted-Tape Inserts in Laminar Flow,” Exp. Therm. Fluid Sci., 18, No. 4, pp. 323–333.
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Patil, A. G., 1991, “Heat Transfer Augmentation in Laminar and Turbulent Flows in a Circular Tube Fitted with Varying Width Twisted Tapes,” M. tech. dissertation, IIT Powai, pp. 31–36.

Figures

Grahic Jump Location
Schematic diagram of experimental setup
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Heat transfer data for one percent SCMC solution in swirl and axial flow (Nul versus Gz)
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Heat transfer data for one percent SCMC solution in swirl and axial flow (Nui versus Resgen)
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Performance ratio R3 for varying width tapes in smooth tube in one percent SCMC solution under constant pumping power
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Isothermal friction factors for swirl and axial flow
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Illustration of the full width and reduced width twisted tapes inside a circular tube
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Variation of performance ratio R3 with fraction of tube diameter occupied by tape

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