Single-Phase Heat Transfer and Pressure Drop of Developing Flow at a Constant Heating Flux Inside Horizontal Helical Finned Tubes

  • Zhixian MaEmail author
  • Nan Zhao
  • Anping Zhou
  • Jili Zhang
Conference paper
Part of the Environmental Science and Engineering book series (ESE)


An experimental investigation was carried out to determine the friction factor and heat transfer coefficients under the uniform heat flux boundary condition. Heat transfer and pressure drop data were obtained from two different types of internal helical finned tubes with diameters of 22.48 and 16.662 mm, a fin height to diameter ratio of 0.0222 and 0.0534, number of starts of 60 and 38 and helix angles of 45 and 60°. Reynolds numbers ranged between 300 and 30,000, while Prandtl number was in the order of 12.1 to 47.5. Results show that friction factors of single-phase flow in the internal helical finned tube were higher than the counterpart of the plain tube. The heating boundary condition has a significant effect on friction factors of internal helical finned tubes in the laminar and transition flow regions. Transitions of single-phase flow in the internal helical finned tube under uniform heat flux were delayed when compared with the adiabatic result. In turbulent region, heat transfer results showed an overall increase when compared with the smooth tubes. With the same Re or q, the heat transfer enhancement of tested tubes was in the range of 1.0–6.8 in the turbulent region and the heat transfer enhancement increase with Reynolds number.


Internal helical-finned tube Adiabatic Secondary transition Developing flow Friction factor Experiment Single-phase 



The project is supported by the National Natural Science Foundation of China (Grant No. 51606029) which is greatly acknowledged.


  1. 1.
    Reynolds, O.: An experimental investigation of the circumstances which determine whether the motion of water shall be direct or sinuous, and of the law of resistance in parallel channels. Philos. Trans. R. Soc. A: Math., Phys. Eng. Sci. 174, 935–982 (1883)Google Scholar
  2. 2.
    Tam, L.M., Ghajar, A.J.: Transitional heat transfer in plain horizontal tubes. Heat Transf. Eng. 27(5), 23–38 (2006)CrossRefGoogle Scholar
  3. 3.
    Fujie, K., Itoh, M., Innami, T.: NO. 4044797, 30 Aug 1977Google Scholar
  4. 4.
    Tam, H.K., et al.: Experimental investigation of heat transfer, friction factor, and optimal fin geometries for the internally microfin tubes in the transition and turbulent regions. J. Enhanc. Heat Transf. 19(5), 457–476 (2012)CrossRefGoogle Scholar
  5. 5.
    Meyer, J.P., Olivier, J.A.: Transitional flow inside enhanced tubes for fully developed and developing flow with different types of inlet disturbances: part II–heat transfer. Int. J. Heat Mass Tran. 54(7–8), 1598–1607 (2011)CrossRefGoogle Scholar
  6. 6.
    Meyer, J.P.: Heat transfer in tubes in the transitional flow regime (2014)Google Scholar
  7. 7.
    Siddique, M., Alhazmy, M.: Experimental study of turbulent single-phase flow and heat transfer inside a micro-finned tube. Int. J. Refrig. 31(2), 234–241 (2008)CrossRefGoogle Scholar
  8. 8.
    Li, X., et al.: Experimental study of single-phase pressure drop and heat transfer in a micro-fin tube. Exp. Therm. Fluid Sci. 32(2), 641–648 (2007)CrossRefGoogle Scholar
  9. 9.
    Kline, S.J., Mclintock, F.A.: Describing uncertainties in single-sample experiments. Mech. Eng. 75, 3–8 (1953)Google Scholar
  10. 10.
    Wang, Y., et al.: Experimental determination of single-phase pressure drop and heat transfer in a horizontal internal helically-finned tube. Int. J. Heat Mass Tran. 104, 240–246 (2017)CrossRefGoogle Scholar
  11. 11.
    Ma, Z., et al.: Experimental investigation on the friction characteristics of water-ethylene glycol mixture flow in internal helical finned horizontal tubes. Exp. Therm. Fluid Sci. 89, 1–8 (2017)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Institute of Building Energy, Dalian University of TechnologyDalianChina

Personalised recommendations