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Experimental investigation of a pulsating heat pipe using ferrofluid (magnetic nanofluid)

Mohammadi, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1115/1.4004805
  3. Abstract:
  4. In this work, a four-turn pulsating heat pipe (PHP) is fabricated and tested experimentally. The novelty of the present PHP is the capability to obtain various thermal performances at a specific heat input by changing the magnetic field. The effects of working fluid (water and ferrofluid), charging ratio (40% and 70%), heat input (35, 45, 55, 65, 75, and 85 W), orientation (horizontal and vertical heat mode), ferrofluid volumetric concentration (2.5% and 7%), and magnetic field on the thermal performance of PHPs are investigated. The results showed that applying the magnetic field on the water-based ferrofluid reduced the thermal resistance of PHP in all orientations. In the presence of a magnetic field, the best thermal performance was achieved at the higher charging ratios (70%) in all orientations
  5. Keywords:
  6. Charging ratio ; Ferrofluid (magnetic nanofluid) ; Pulsating heat pipe (PHP) ; Thermal resistance ; Charging ratios ; Experimental investigations ; Ferrofluid ; Heat input ; Heat-mode ; Nano-fluid ; Pulsating heat pipe ; Thermal Performance ; Volumetric concentrations ; Water based ; Working fluid ; Heat pipes ; Heat resistance ; Magnetism ; Mixed convection ; Nanofluidics ; Magnetic field effects
  7. Source: Journal of Heat Transfer ; Volume 134, Issue 1 , 2012 ; 00221481 (ISSN)
  8. URL: http://heattransfer.asmedigitalcollection.asme.org/article.aspx?articleid=1450384