Effects of surface coating of nanoparticles on thermal performance of Open Loop Pulsating Heat Pipes

Mehdi, T ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1115/HT2012-58064
  3. Publisher: 2012
  4. Abstract:
  5. Homogenous dispersing of nanoparticles in a base fluid is an excellent way to increase the thermal performance of heat transfer devices especially Heat Pipes (HPs). As a wickless, cheap and efficient heat pipe, Pulsating Heat Pipes (PHPs) are important candidates for thermal application considerations. In the present research an Open Loop Pulsating Heat Pipe (OLPHP) is fabricated and tested experimentally. The effects of working fluid namely, water, Silica Coated ferrofluid (SC ferrofluid), and ferrofluid without surface coating of nanoparticles (ferrofluid), charging ratio, heat input, and application of magnetic field on the overall thermal performance of the OLPHPs are investigated. Experimental results show that ferrofluid has better heat transport capability relative to SC ferrofluid. Furthermore, application of magnetic field improves the heat transfer performance of OLPHPs charged with both ferrofluids
  6. Keywords:
  7. Open Loop Pulsating Heat Pipes (OLPHPs) ; Surface coating ; Thermal resistance ; Dispersing of Nanoparticles ; Ferrofluid ; Heat transfer device ; Heat transfer performance ; Heat transport capability ; Loop pulsating heat pipes ; Surface coatings ; Thermal applications ; Coatings ; Heat pipes ; Heat resistance ; Heat transfer ; Magnetic fluids ; Microchannels ; Nanoparticles
  8. Source: ASME 2012 Heat Transfer Summer Conf. Collocated with the ASME 2012 Fluids Engineering Div. Summer Meeting and the ASME 2012 10th Int. Conf. on Nanochannels, Microchannels and Minichannels, HT 2012, 8 July 2012 through 12 July 2012 ; Volume 2 , 2012 , Pages 593-599 ; 9780791844786 (ISBN)
  9. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1720551