Experimental study of the startup performance of ferrofluidic open loop Pulsating Heat Pipes

Maziar, M ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1115/HT2012-58056
  3. Publisher: 2012
  4. Abstract:
  5. Pulsating Heat Pipes (PHPs) are new and promising heat transfer devices. To implement the novel idea to vary the startup performance of a PHP using ferrofluid with and without the application of magnetic field, an experimental investigation is conducted. The effects of several important parameters including working fluid, charging ratio, heat input, ferrofluid concentration, internal pressure, and application of magnetic field on the startup performance of Open Loop Pulsating Heat Pipes (Open Loop PHPs) have been considered and described in detail. Obtained results show that using ferrofluid instead of distilled water can improve the startup performance of PHPs in certain conditions. Furthermore, application of magnetic field on the water based ferrofluid helps PHPs to startup at lower temperatures. High concentration of ferrofluids (5 % w/v) degrades startup performance of PHPs. This study helps to design electronic cooling devices to be more efficient. Copyright
  6. Keywords:
  7. Pulsating Heat Pipe (PHP) ; Charging ratios ; Experimental investigations ; Ferrofluid ; Heat transfer device ; Loop pulsating heat pipes ; Lower temperatures ; Pulsating heat pipe ; Start-up performance ; Magnetic fields ; Microchannels ; Heat transfer
  8. Source: ASME 2012 Heat Transfer Summer Conference Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012, Rio Grande, 8 July 2012 through 12 July 2012 ; Volume 2 , 2012 , Pages 585-591 ; 9780791844786 (ISBN)
  9. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1720550