0
Research Papers: Heat Transfer Enhancement

Tapered Twisted Tape Inserts for Enhanced Heat Transfer

[+] Author and Article Information
B. V. N. Ramakumar

Honeywell Technology Solutions,
Bangalore 560103, India
e-mail: Ramakumar.bommisetty@honeywell.com

J. D. Arsha

Honeywell Technology Solutions,
Bangalore 560103, India
e-mail: Arsha.JD@honeywell.com

Praveen Tayal

Honeywell Technology Solutions,
Hyderabad 500032, India
e-mail: Praveen.Tayal@Honeywell.com

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received August 21, 2014; final manuscript received July 28, 2015; published online August 25, 2015. Assoc. Editor: Sujoy Kumar Saha.

J. Heat Transfer 138(1), 011901 (Aug 25, 2015) (9 pages) Paper No: HT-14-1554; doi: 10.1115/1.4031207 History: Received August 21, 2014; Revised July 28, 2015

Insertion of twisted tapes in smooth channels is one of the passive methods used for enhancing heat transfer. Flow and associated heat transfer characteristics of these channels are very complex. Understanding this complex flow is helpful while designing new passive methods. Numerical methods like computational fluid dynamics (CFD) are gaining much popularity for analyzing and designing these heat transfer enhancement techniques. This paper focuses on such a numerical study. The preliminary study is focused on development of numerical methodology through validation. Successive studies are aimed at development of an innovative design for twisted tape. Twisted tapes with taper angle (tapered twisted tapes, i.e., tape width decreases along the flow direction) are developed and evaluated on the basis of the performance of these tapes with those of conventional tapes. A circular tube with tapered twisted tape with a twist ratio of 3 and taper angles of 0.3, 0.4, 0.5, 0.6, and 0.7 is considered for this study along with a plain tube. Three Reynolds numbers (Re) of 8545, 11393, and 13333 are considered to examine the sensitivity of the performance. Simulations are performed with a commercially available CFD tool, ansys fluent (v14.0). Heat transfer and pressure drop results are presented in the form of Nusselt number (Nu), friction factor (f), and overall enhancement ratio (η). An increase of 17% in overall enhancement is predicted with taper angle of 0.5.

FIGURES IN THIS ARTICLE
<>
Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.

References

Naphon, P. , 2006, “Heat Transfer and Pressure Drop in the Horizontal Double Pipes With and Without Twisted Tape Insert,” Int. Commun. Heat Mass Transfer, 33(2), pp. 166–175. [CrossRef]
Bas, H. , and Ozceyhan, V. , 2012, “Heat Transfer Enhancement in a Tube With Twisted Tape Inserts Placed Separately From the Tube Wall,” Exp. Therm. Fluid Sci., 41, pp. 51–58. [CrossRef]
Bharadwaj, P. , Khondge, A. D. , and Date, A. W. , 2009, “Heat Transfer and Pressure Drop in a Spirally Grooved Tube With Twisted Tape Insert,” Int. J. Heat Mass Transfer, 52(7–8), pp. 1938–1944. [CrossRef]
Eiamsa-ard, S. , and Promvonge, P. , 2010, “Thermal Characteristics in Round Tube Fitted With Serrated Twisted Tape,” Appl. Therm. Eng., 30(13), pp. 1673–1682. [CrossRef]
Thianpong, C. , Eiamsa-ard, P. , Promvonge, P. , and Eiamsa-ard, S. , 2011, “Effect of Perforated Twisted-Tapes With Parallel Wings on Heat Transfer Enhancement in a Heat Exchanger Tube,” Energy Procedia, 14, pp. 1117–1123. [CrossRef]
Eiamsa-ard, S. , Wongcharee, K. , Eiamsa-ard, P. , and Thianpong, C. , 2010, “Heat Transfer Enhancement in a Tube Using Delta-Winglet Twisted Tape Inserts,” Appl. Therm. Eng., 30(4), pp. 310–318. [CrossRef]
Woei Chang, S. , Jena Jan, Y. , and Shuen Liou, J. , 2007, “Turbulent Heat Transfer and Pressure Drop in Tube Fitted With Serrated Twisted Tape,” Int. J. Therm. Sci., 46(5), pp. 506–518. [CrossRef]
Eiamsa-ard, S. , and Promvonge, P. , 2010, “Performance Assessment in a Heat Exchanger Tube With Alternate Clockwise and Counter-Clockwise Twisted-Tape Inserts,” Int. J. Heat Mass Transfer, 53(7–8), pp. 1364–1372. [CrossRef]
Wongcharee, K. , and Eiamsa-ard, S. , 2011, “Heat Transfer Enhancement by Twisted Tapes With Alternate-Axes and Triangular, Rectangular and Trapezoidal Wings,” Chem. Eng. Process., 50(2), pp. 211–219. [CrossRef]
Eiamsa-ard, S. , Thianpong, C. , and Promvonge, P. , 2006, “Experimental Investigation of Heat Transfer and Flow Friction in a Circular Tube Fitted With Regularly Spaced Twisted Tape Elements,” Int. Commun. Heat Mass Transfer, 33(10), pp. 1225–1233. [CrossRef]
Eiamsa-ard, S. , Thianpong, C. , Eiamsa-ard, P. , and Promvonge, P. , 2010, “Thermal Characteristics in a Heat Exchanger Tube Fitted With Dual Twisted Tape Elements in Tandem,” Int. Commun. Heat Mass Transfer, 37(1), pp. 39–46. [CrossRef]
Wongcharee, K. , and Eiamsa-ard, S. , 2011, “Friction and Heat Transfer Characteristics of Laminar Swirl Flow Through the Round Tubes Inserted With Alternate Clockwise and Counter-Clockwise Twisted-Tapes,” Int. Commun. Heat Mass Transfer, 38(3), pp. 348–352. [CrossRef]
Woei Chang, S. , Lirng Yang, T. , and Shuen Liou, J. , 2007, “Heat Transfer and Pressure Drop in Tube With Broken Twisted Tape Insert,” Exp. Therm. Fluid Sci., 32(2), pp. 489–501. [CrossRef]
Eiamsa-ard, S. , Thianpong, C. , and Eiamsa-ard, P. , 2010, “Turbulent Heat Transfer Enhancement by Counter/Co-Swirling Flow in a Tube Fitted With Twin Twisted Tapes,” Exp. Therm. Fluid Sci., 34(1), pp. 53–62. [CrossRef]
Murugesan, P. , Mayilsamy, K. , Suresh, S. , and Srinivasan, P. S. S. , 2011, “Heat Transfer and Pressure Drop Characteristics in a Circular Tube Fitted With and Without V-Cut Twisted Tape Insert,” Int. Commun. Heat Mass Transfer, 38(3), pp. 329–334. [CrossRef]
Eiamsa-ard, S. , Yongsirib, K. , Nanan, K. , and Thianpong, C. , 2012, “Heat Transfer Augmentation by Helically Twisted Tapes as Swirl and Turbulence Promoters,” Chem. Eng. Process., 60, pp. 42–48. [CrossRef]
Naga Sarada, S. , Sita Rama Raju, A. V. , Kalyani Radha, K. , and Shyam Sunder, L. , 2010, “Enhancement of Heat Transfer Using Varying Width Twisted Tape Inserts,” Int. J. Eng. Sci. Technol., 2(6), pp. 107–118.
Gunes, S. , Erdemir, D. , Ozceyhan, V. , and Altuntop, N. , 2012, “Numerical Investigation of Thermal Performance of a Tube Fitted With Regularly Spaced Twisted Tape Elements,” ASME Paper No. HT2012-58078.
Mwesigye, A. , Bello-Ochende, T. , and Meyer, P. , 2013, “Heat Transfer Enhancement in a Parabolic Trough Receiver Using Wall Detached Twisted Tape Inserts,” ASME Paper No. IMECE2013-62745.
Kumar Saha, S. , Kumar Barman, B. , and Banerjee, S. , 2012, “Heat Transfer Enhancement of Laminar Flow Through a Circular Tube Having Wire Coil Inserts and Fitted With Center-Cleared Twisted Tape,” ASME J. Therm. Sci. Eng. Appl., 4(3), p. 031003. [CrossRef]
Giniyatullin, A. , and Tarasevich, S. , 2013, “CFD Modelling of Subcooled Boiling in Tubes With Twisted Tape Insert,” ASME Paper No. FEDSM2013-16298.
Lin, Z.-M. , and Wang, L.-B. , 2009, “Convective Heat Transfer Enhancement in a Circular Tube Using Twisted Tape,” ASME J. Heat Transfer, 131(8), p. 081901. [CrossRef]
Kumar Saha, S. , and Kumar Pai, P. , 2014, “Experimental Investigation of Laminar Flow of Viscous Oil Through a Circular Tube Having Integral Spiral Corrugation Roughness and Fitted With Twisted Tapes With Oblique Teeth,” Exp. Therm. Fluid Sci., 57, pp. 301–309. [CrossRef]
Patil, A. G. , 2000, “Laminar Flow Heat Transfer and Pressure Drop Characteristics of Power-Law Fluids Inside Tubes With Varying Width Twisted Tape Inserts,” ASME J. Heat Transfer, 122(1), pp. 143–149. [CrossRef]
ANSYS, 2011, ICEMCFD User Manual, ANSYS, Inc., Canonsburg, PA.
ANSYS, 2011, FLUENT User Manual, ANSYS, Inc., Canonsburg, PA.
Groves, C. E. , Ilie, M. , and Schallhorn, P. A. , 2012, “Comprehensive Approach to Verification and Validation of CFD Simulations Applied to Backward Facing Step-Application of CFD Uncertainty Analysis,” NASA, Washington, DC, Technical Report No. 20120013081.
Celik, I. B. , 2008, “Procedure for Estimation and Reporting of Uncertainty Due to Discretization in CFD Applications,” ASME J. Fluids Eng., 130(7), p. 078001. [CrossRef]

Figures

Grahic Jump Location
Fig. 1

Computational model: (a) 3D view of classic twisted tape, (b) twisted tape terminology, and (c) meshed geometry

Grahic Jump Location
Fig. 2

Details of configurations: (a) tapered twisted tape inserts and (b) taper angle

Grahic Jump Location
Fig. 3

Variation of velocity along the flow direction

Grahic Jump Location
Fig. 4

Velocity contour at different vertical planes

Grahic Jump Location
Fig. 5

Variation of pressure along the flow direction

Grahic Jump Location
Fig. 6

Variation of turbulent intensity along the flow direction

Grahic Jump Location
Fig. 7

Effect of Reynolds number on the friction factor

Grahic Jump Location
Fig. 8

Effect of taper angle on the friction factor

Grahic Jump Location
Fig. 9

Effect of Reynolds number on the Nusselt number

Grahic Jump Location
Fig. 10

Effect of taper angle on the Nusselt number

Grahic Jump Location
Fig. 11

Effect of Reynolds number on the overall performance ratio

Grahic Jump Location
Fig. 12

Effect of taper angle on the overall performance ratio

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In