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Heat Transfer Enhancement Studies in a Circular Tube Fitted with Right-Left Helical Inserts with Spacer

Authors: P. K. Nagarajan, P. Sivashanmugam

Abstract:

Experimental investigation of heat transfer and friction factor characteristics of circular tube fitted with 300 right-left helical screw inserts with 100 mm spacer of different twist ratio has been presented for laminar and turbulent flow.. The experimental data obtained were compared with those obtained from plain tube published data. The heat transfer coefficient enhancement for 300 RL inserts with 100 mm spacer is quite comparable with for 300 R-L inserts. Performance evaluation analysis has been made and found that the performance ratio increases with increasing Reynolds number and decreasing twist ration with the maximum for the twist ratio 2.93. Also, the performance ratio of more than one indicates that the type of twist inserts can be used effectively for heat transfer augmentation.

Keywords: Heat transfer augmentation, right-left helical screw inserts with spacer, Twist ratio, Heat Transfer

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1085908

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References:


[1] Bergles, A. E., Techniques to Augment Heat Transfer. In: Rohsenow, W. M.,Hartnett, J. P., Ganie, E. (Eds.), Handbook of Heat Transfer Application. McGraw-Hill, New York, 1985.
[2] Bergles, A. E., November , "Some Perspectives on Enhanced Heat Transfer, Second-Generation Heat Transfer Technology," ASME Journal of Heat Transfer, Vol. 110,1988, 1082-1096.
[3] E. Smithberg, F.Landis, "Friction and Forced Convection Heat transfer characteristics in tubes fitted with twisted tape swirl Generators", ASME Journal of Heat Transfer, 2, 1964, 39-49
[4] A. W. Date, J.R.Singham, "Numerical prediction of friction factor and heat transfer characteristics of fully developed laminar flow in tubes containing twisted tapes", ASME Paper No. 72-HT-17, 1972.
[5] Date, A.W., " Prediction of fully developed flow in a tube containing a twisted tape". International Journal Heat and Mass Transfer. 17,1974, 845-859
[6] Hong, S.W., Bergles, A.E., "Augmentation of laminar flow heat transfer in tubes by means of twisted-tape inserts". ASME J. Heat Transfer. 98, 1976, 251-256
[7] Duplessis, J.P., Kroeger, D.G., "Numerical prediction of laminar flow with heat transfer in tube with a twisted tape insert." Proceedings of the International Conference on Numerical Methods in Laminar and Turbulent Flow, 1983, 775-785.
[8] R.M. Manglik, A.E. Bergles, "A correlation for laminar flow enhanced heat transfer in uniform wall temperature circular tubes with twistedtape inserts", Advances in Heat Transfer-1987, HTD vol. 1987, ASME, New York,1987, 19-25.
[9] C. Shivkumar, M. Raja Rao, "Studies on compound augmentation of laminar flow heat transfer to generalized power law fluids in spirally corrugated tubes by means of twisted tape inserts", ASME, HTD 96 ,1988, 685-692.
[10] R.M. Manglik, A.E Bergles "Heat transfer and pressure drop correlations for twisted-tape inserts in isothermal tubes", Part I. Laminar flows. ASME J. Heat Transfer. 115, 4,1993a, 881-889.
[11] R.M. Manglik, A.E Bergles, "Heat transfer and pressure drop correlations for twisted-tape inserts in isothermal tubes: Part ll- Transition and turbulent flows." ASME J. Heat Transfer. 115, 1993b, 890-896.
[12] V.V.B. Pinjala, M. Raja Rao, "Heat transfer correlations for laminar non-Newtonian flow in tubes with twisted-tape inserts", ASME, HTD 174 ,1991, 59-64.
[13] W.M. Chakroun, S. Al-Fahed, "The effect of twisted-tape width on heat transfer and pressure drop for fully developed laminar flow", Journal of Engineering for Gas Turbines and Power 118, 1996, 584-589.
[14] S.K. Agarwal, M. Raja Rao,"Heat transfer augmentation for the flow of a viscous liquid in circular tubes using twisted tape inserts", International Journal of Heat Mass Transfer 39, 1996, 3547-3557.
[15] M.S. Lokanath, " Performance evaluation of full length and half length twisted tape inserts on laminar flow heat transfer in tubes", Proceedings of the 14th National Heat and Mass Transfer Conference and Third ISHMT-ASME Joint Heat and Mass Transfer Conference, IIT Kanpur, India, Paper No. HMT-97-031,1997, 319-324.
[16] S.Al-Fahed, L.M.Chamra, W.Charoun "Pressure drop and heat transfer comparison for both micro tube and twisted tape inserts in laminar flow", Experimental Thermal and Fluid Sicence,18, 1999, 323-333.
[17] A.G. Patil, " Laminar flow heat transfer and pressure drop characteristics of power-law fluids inside tubes with varying width twisted tape inserts", ASME J. Heat Transfer 22, 1, 2000, 143-149.
[18] S.K. Saha, A. Dutta, S.K. Dhal, "Friction and heat transfer characteristics of laminar swirl flow through a circular tube fitted with regularly spaced twisted- tape elements", International Journal of Heat and Mass Transfer 44,2001, 4211 - 4223.
[19] SmithEiamsa-ard,PongjetPromvonge, "Enhancement of heat transfer in a tube with regularly-spaced helical tape swirl generators", Solar Energy 78, 2005, 483-494.
[20] W.J.Marner and A.E.Bergles "Augmentation of Highly viscous laminar heat transfer inside the tube with constant wall temperature", Experimental Thermal and Fluid Science, 2, (1989) 252-267.
[21] Z.Lejaks, I .Machad and J.Sir "Heat transfer to a Newtonian liquid flowing through a tube with an internal helical element", International Chemical Engineering 27,2,(1987) 210-217
[22] Sivashanmugam, P and S Suresh " Experimental studies on heat transfer and friction factor characteristics in laminar flow through a circular tube fitted with helical screw-tape inserts", Journal of Applied Thermal Engineering 26, 2006, pp 1990-1997.
[23] Sivashanmugam, P, and Nagarajan P.K; "Experimental studies on heat transfer and friction factor characteristics in laminar flow through a circular tube fitted with right-left helical screw-tape inserts ",Journal of Experimental Thermal and Fluid Science. 32, 1, 2007, 192-197.
[24] Sivashanmugam, P, and Nagarajan P.K; "Experimental studies on heat transfer and friction factor characteristics in turbulent flow through a circular tube fitted with right-left helical screw-tape inserts" Journal of Chemical Engineering Communication,195,2008,977-987.
[25] Q.Liau, M.D.Xin , " Augmentation of convective heat transfer inside tubes with three-dimensional internal extended surfaces and twisted tape inserts", Chemical Engineering Journal,78, 2000, 95-105.
[26] E.N.Sieder ,G.E. Tate, Ind. Eng. Chem. 28, 1936, 1429.
[27] A.E.Bergles, A.R.Blumenkrantz, J. Taborek, "Performance Evaluation Criteria for Enhanced Heat Transfer Surfaces", paper FC 6.3, proc. 5th Int. Heat Transfer Conf., Tokyo, Vol.II, (1974)239-243,
[28] H.Usui Y Sano, K Iwashita A Isozaki "Enhancement of heat transfer by a combination of internally grooved rough tube and twisted tape", Int Chem Eng 26, 1 (1996), 97-104