THERMAL SCIENCE

International Scientific Journal

Swaminathan Selvam

,

Periyakaruppan Thiyagarajan

,

Sivan Suresh

EXPERIMENTAL STUDIES ON EFFECT OF BONDING THE TWISTED TAPE WITH PINS TO THE INNER SURFACE OF THE CIRCULAR TUBE

ABSTRACT
Heat transfer and friction factor characteristics are studied for water flowing through the tube in tube heat exchanger for two different configurations, namely,(1) twisted tape with pins (TTP) and (2) twisted tape with pins bonded to the inner surface of the test section (TTPB). Experiments are carried out for different twist pitch to the width of the twisted tape ratios (y/w) for TTP and TTPB. But very few research works have been done based on the above mentioned heat transfer enhancement techniques. This paper presents the effect of twisted tape with pins on the heat transfer for a fully developed turbulent flow. Experiments are conducted by maintaining constant wall temperature. The heat transfer rate and pressure drop is found to be high for TTPB of y/w=3.33 when compared to all other configurations. The empirical correlations developed for different twisted tape with pins results in ±7.28% deviation for Nusselt number and ±7.16% for friction factor.
KEYWORDS
turbulent flow; bonding, twisted tape with pins, twist pitch, Heat Transfer Enhancement, friction factor
PAPER SUBMITTED: 2012-08-07
PAPER REVISED: 2013-02-27
PAPER ACCEPTED: 2013-03-30
PUBLISHED ONLINE: 2013-04-21
DOI REFERENCE: https://doi.org/10.2298/TSCI120807036S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2014, VOLUME 18, ISSUE Issue 4, PAGES [1273 - 1283]
REFERENCES
  1. Manglik.R.M., A.E. Bergles.A.E., Heat transfer and pressure drop correlations for twisted-tape inserts in isothermal tubes, Part I. Laminar flows, ASME Journal of Heat Transfer 115 (4) (1993),pp. 881-889.
  2. Manglik.R.M., Bergles.A.E., Heat transfer and pressure drop correlations for twisted-tape inserts in isothermal tubes: Part II Transition and turbulent flows, ASME Journal of Heat Transfer 115 (1993), pp. 890-896.
  3. Agarwal.S.K., Raja Rao.M., Heat transfer augmentation for the flow of a viscous liquid in circular tubes using twisted tape inserts, International Journal of Heat and Mass Transfer, 39 (1996), pp.3547-3557.
  4. Naphon.P., Effect of coil-wire insert on heat transfer enhancement and pressure drop of the horizontal concentric tubes, International Communications in Heat and Mass Transfer 33(2006), pp.753-763.
  5. Naphon.P., Sriromruln.P., Single-phase heat transfer and pressure drop in the micro-fin tubes with coiled wire insert, International Communications in Heat and Mass Transfer 33(2006), pp.176-183.
  6. Gul.H., Evin.D., Heat transfer enhancement in circular tubes using helical swirl generator insert at the entrance, International Journal of Thermal Sciences 46 (2007), pp.1297-1303.
  7. Eiamsa-ard.S., Promvonge.P., Heat transfer characteristics in a tube fitted with helical screw-tape with/without core rod inserts, International Communications in Heat and Mass Transfer 34 (2007), pp.176-185.
  8. Sivashanmugam.P., Suresh.S., Experimental studies on heat transfer and friction factor characteristics in turbulent flow through a circular tube fitted with helical screw-tape inserts, Journal of Chemical Engineering and Process 46, (2007), pp.1292-1298.
  9. Promvonge.P., Thermal augmentation in circular tube with twisted tape and wire coil turbulators, Energy conversion and Management 49(2008), pp. 2949-2955.
  10. Sreenivasulu.T., Prasad. B.V.S.S.S., Flow and heat transfer characteristics in an annulus wrapped with a helical wire, International Journal of Thermal Sciences 48(2009), pp. 1377-1391.
  11. Eiamsa-ard.S., Thianpong.C., Eiamsa-ard.P., Promvonge.P., Thermal characteristics in a heat exchanger tube fitted with dual twisted tape elements in tandem, International Communications in Heat and Mass Transfer 37(2010), pp.39-46.
  12. Eiamsa-ard.S., Wongcharee.K., Eiamsa-ard.P., Thianpong.C., Thermohydraulic investigation of turbulent flow through a round tube equipped with twisted tape consisting of centre wings and alternate-axes, Experimental Thermal Fluid Science 34 (2010), pp. 1151-1161.
  13. Eiamsa-ard.S., Seemawute.P., Wongcharee.K., Influences of peripherally-cut twisted tape insert on heat transfer and thermal performance characteristics in laminar and turbulent tube flows, Experimental Thermal Fluid Science 34 (2010), pp. 711-719.
  14. CUI Yong-zhang., TIAN Mao-cheng., Three-dimensional numerical simulation of thermal-hydraulic performance of a circular tube with edge fold-twisted-tape inserts, Journal of Hydrodynamics. 22(5) (2010), pp. 662-670.
  15. Seemawute.P., Eiamsa-ard.S., Thermohydraulics of turbulent flow through a round tube by a peripherally-cut twisted tape with an alternate axis, International Communications in Heat and Mass Transfer 37(2010), pp.652-659.
  16. Naphon.P., Suchana.T., Heat transfer enhancement and pressure drop of the horizontal concentric tube with twisted wires brush inserts, International Communications in Heat and Mass Transfer 38(2011), pp.236-24.
  17. Selvam.S., Thiyagarajan.PR., Suresh.S., Experimental studies on effect of wire coiled coil matrix turbulators with and without bonding on the wall of the test section of concentric tube heat exchanger, Thermal Science Scientific Journal 16(4)(2012),pp.1151-1164.
  18. Moffat.R.J., Describing the uncertainties in experimental results, Experimental Thermal Fluid Science, 1(1988), pp. 504-564.
  19. Sieder.E.N., Tate. G.E., Heat transfer and pressure drop of liquids in tubes, Industrial and Engineering Chemistry 28 (1936) PP.1429-1439.
  20. Petukhov.B.S., Heat transfer and fraction in turbulent pipe flow with variable physical properties, in: Advances in Heat Transfer, Vol6. Academic Press, San Diego, 1970, pp.504-564.
PDF VERSION [DOWNLOAD]
Experimental studies on effect of bonding the twisted tape with pins to the inner surface of the circular tube

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence