THERMAL SCIENCE

International Scientific Journal

Authors of this Paper

External Links

Harshal Jagtap

,

Uday Wankhede

EXPERIMENTAL INVESTIGATIONS OF EFFECT OF SOUND WAVES ON OSCILLATION AND STARTUP CHARACTERISTICS OF OSCILLATING HEAT PIPE AT DIFFERENT ORIENTATIONS

ABSTRACT
This research deals with the effects of working fluid and use of sound waves on the startup and heat transfer characteristics in terms of thermal resistance of a closed loop oscillating heat pipe. The performance of the oscillating heat pipe is checked for different orientations as 90° (vertical position), 60°, and 30°. Initially water is used as working fluid and performance of the oscillating heat pipe is checked with and without sound waves. Then 0.1 wt.% Al2O3-water nanofluid is utilized as working fluid in oscillating heat pipe and its performance is analyzed with and without sound waves. In this work, sound waves of 1 kHz frequency are passed through the evaporator section of closed-loop oscillation heat pipe. Application of sound waves improved the oscillation characteristics of the CLOHP with reduced startup time and enhanced thermal performance at all orientations. In comparison between working fluids, 0.1 wt.% Al2O3-water nanofluid showed better oscillation characteristics at all orientations of CLOHP except at 90° where use of sound waves leads to dry-out condition.
KEYWORDS
pulsating/ oscillating heat pipe, sound waves, thermal performance, working fluid
PAPER SUBMITTED: 2015-08-04
PAPER REVISED: 2016-01-25
PAPER ACCEPTED: 2016-01-31
PUBLISHED ONLINE: 2016-07-12
DOI REFERENCE: https://doi.org/10.2298/TSCI150804142J
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 6, PAGES [2587 - 2597]
REFERENCES
  1. Honghai Yang, et al., Operational limit of closed loop pulsating heat pipes, Applied Thermal Engineering, 28 (2008), pp.49-593
  2. Piyanun Charoensawan, et al., Closed loop pulsating heat pipes Part A: parametric experimental investigations, Applied Thermal Engineering, 23 (2003), pp.2009-2020
  3. Suchana Akter Jahan, et al., Effect of inclination angles on heat transfer characteristics of a closed loop pulsating heat pipe (CLPHP), Procedia Engineering, 56 (2013), pp.82 - 87
  4. Haizhen Xian, et al., Heat Transfer Characteristics of Oscillating Heat Pipe With Water and Ethanol as Working Fluids, ASME Journal of Heat Transfer, 2010, Vol. 132 / 121501-1
  5. Harshal B. Jagtap and Uday S. Wankhede, Review on Thermal Performance of Oscillating Heat Pipe with Different Working Fluids, International Journal of Applied Engineering Research, 10 (2015),4, pp.9335-9353
  6. H. B. Ma, et al., "An Experimental Investigation of Heat Transport Capability in a Nanofluid Oscillating Heat Pipe, ASME Journal of Heat and Mass Transfer, 2006,128/1213
  7. Lin Y H, et al., Effect of silver nanofluid on pulsating heat pipe thermal performance, Applied Thermal Engineering, 28 (2008), pp.1312-1317
  8. S. Wannapakhe1, et al., Heat transfer rate of a closed-loop oscillating heat pipe with check valves using silver nanofluid as working fluid, Journal of Mechanical Science and Technology, 23 (2009), pp.1576-1582
  9. Jian Qu, et al., Thermal performance of an oscillating heat pipe with Al2O3 water nanofluids, International Communications in Heat and Mass Transfer, 37 (2010), pp.111- 115
  10. Ji Y L, et al., Particle size effect on heat transfer performance in an oscillating heat pipe, Experimental Thermal and Fluid Science, 35 (2011), pp.724-727
  11. Jian Qu and Huiying Wu, Thermal performance comparison of oscillating heat pipes with SiO2/water and Al2O3/water nanofluids, International Journal of Thermal Sciences, 50 (2011), pp.1954-1962
  12. Wang S F, et al., Experimental study on pulsating heat pipe with functional thermal fluids, International Journal of Heat and Mass Transfer, 52 (2009), pp.5276-5279
  13. N. Bhuwakietkumjohn and S. Rittidech, Internal flow patterns on heat transfer characteristics of a closed-loop oscillating heat-pipe with check valves using ethanol and a silver nano-ethanol mixture, Experimental Thermal and Fluid Science, 34 (2010), pp.1000-1007.
  14. Nannan Zhao, et al., Ultrasonic Effect on the Startup of an Oscillating Heat Pipe, ASME Journal of Heat Transfer, 2013, Vol. 135 / 074503-1
  15. Z.W.Douglas and M.K.Smith, A. Glezer, Acoustically enhance boiling heat transfer,@EDA publishing/THERMINIC 2007, ISBN: 978-2-35500-002-7
  16. Ho-Young Kim, et al., Enhancement of natural convection and pool boiling heat transfer via ultrasonic vibration, International Journal of Heat and Mass Transfer, 47 (2004), pp.2831-2840
  17. D.W. Zhou, Heat transfer enhancement of copper nanofluid with acoustic cavitation, International Journal of Heat and Mass Transfer, 47 (2004), pp.3109-3117
PDF VERSION [DOWNLOAD]
Experimental investigations of effect of sound waves on oscillation and startup characteristics of oscillating heat pipe at different orientations

© 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