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Parameters Affecting the Functioning of Close Loop Pulsating Heat Pipe: A Review

Author Affiliations

  • 1 Department of Mechanical Engineering, Govt. College of Engineering, Amravati, MS, INDIA

Res. J. Engineering Sci., Volume 2, Issue (1), Pages 35-39, January,26 (2013)

Abstract

Advancement is taking place in every field of engineering and increasing the demand of smaller and effective heat transfer devices. This leads to the development of Pulsating Heat Pipe (PHP). PHP is a passive two-phase heat transfer device for handling moderate to high heat fluxes typically suited for power electronics and similar applications. It usually consists of a small diameter tube, closed end-to-end in a loop, evacuated and then partially filled with a working fluid. The internal flow patterns in a PHP are a function of the applied heat flux. This paper highlights the thermo-hydrodynamic characteristics of these devices. State of art indicates that at least three thermo-mechanical boundary conditions have to be met for the device to function properly as pulsating heat pipe. This includes internal tube diameter, applied heat flux and filling ratio. Additionally the numbers of turns and thermo-physical properties of working fluid also play a vital role in determining the thermal behaviour. Apart from this, paper is a literature review on pulsating heat pipe technology; work performed by researchers. Finally, unresolved issues on the mechanism of PHP operation with different type of working fluids, validation techniques and applications are discussed.

References

  1. Akachi H., Structure of a Heat Pipe, U.S. Patent Number 4921041 (1990)
  2. Akachi H., Structure of Micro-Heat Pipe, U.S. Patent Number 5219020 (1993)
  3. Khandekar S., Mamelli M. and Marengo M., An Exploratory Study of a Pulsating Heat Pipe Operated with a Two Component Fluid Mixture, ASME Heat and Mass Transfer conference, IIT Madras, (2011)
  4. Groll M. and Khandekar S., Pulsating Heat Pipes: Progress and Prospects, Proc. International Conference on Energy and the Environment, Shanghai, China. , 723-730 (2003)
  5. Reay D.A. and Kew P.A., Heat pipes theory, design and applications, fifth edition, Applied Thermal Engineering, Elsevier Science, 978-0-7506-6754-8 (2006)
  6. Nishio S., Nagata S. and Baba S., Thermal Performance of SEMOS Heat Pipes, Proc. 12th Int. Heat Transfer Conf. Grenoble, France, 4, 477-482 (2002)
  7. Basiulis A. and Filler M., Operating characteristics and long life capabilities of organic fluid heat pipes, 6th AIAA Thermophys, Conference, Tullahoma, Tennessee, AIAA Paper, 71-408 (1971)
  8. Mamelli M., Marengo M. and Zinna S., Numerical model of a multi-turn Closed Loop Pulsating Heat Pipe: Effects of the local pressure losses due to meanderings, Journal of Heat and Mass Transfer, 55, 10361047, (2011)
  9. Khandekar S. and Groll M., Pulsating Heat Pipes: Attractive Entrants in the Family of Closed Passive Two-Phase System, Journal of Energy, Heat and Mass Transfer, 26, 99-115 (2004)
  10. Meena P. and Rittidech S., Effect of Evaporator Section Lengths and Working Fluids on Operational Limit of Closed Loop Oscillating Heat Pipes with Check Valves, American Journal of Applied Sciences, 6(1), 133-136(2009)
  11. Khandekar S., Groll M., Charoensawan P. and Terdtoon P., Pulsating Heat Pipes: Thermo-fluidic Characteristics and Comparative Study with Single Phase Thermosyphon, Proc. 12th Int. Heat Transfer Conf., Grenoble, France, 4,459-464 (2002)
  12. Khandekar S., Dollinger N. and Groll M., Understanding Operational Regimes of Pulsating Heat Pipes: An Experimental Study, Applied Thermal Engineering, Elsevier Science, (2003)
  13. Shafii M., Faghri A. and Zhang Y., Thermal Modeling of Unlooped and Looped Pulsating Heat Pipes, ASME Journal of Heat Transfer, 123, 1159-1172 (2001)
  14. Groll M. and Khandekar S., Pulsating Heat Pipes: A Challenge and Still Unsolved Problem in Heat Pipe Science, Archives of Thermodynamics, Begell House, 23(4), 17-28 (2002)