Analysis of entropy generation and convective heat transfer of Al 2O 3 nanofluid flow in a tangential micro heat sink

Shalchi Tabrizi, A ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ijheatmasstransfer.2012.04.005
  3. Publisher: 2012
  4. Abstract:
  5. Effect of using Al 2O 3-water nanofluids with different volume fractions and particle diameters on generated entropy, hydrodynamic performance and heat transfer characteristics of a tangential micro-heat sink (TMHS) was numerically investigated in this research. Results indicated that considerable heat transfer enhancement is possible when using Al 2O 3-water nanofluids as coolant and clearly the enhancement improves with increasing particles concentration and decreasing particles size. However, using nanofluid has also induced drastic effects on the pumping power that increases with particles volume fraction and Reynolds number. Finally, it was found that generated total entropy decreases with increasing volume fraction and Reynolds number and decreasing particles size
  6. Keywords:
  7. Tangential microchannel heat sink ; Convective heat transfer ; Entropy generation ; Heat Transfer enhancement ; Hydrodynamic performance ; Micro channel heat sinks ; Micro heat sink ; Nano-fluid ; Nanofluid flow ; Nanofluids ; Particle diameters ; Particles concentration ; Particles sizes ; Pumping power ; Total entropy ; Water nanofluids ; Aluminum ; Cooling systems ; Entropy ; Heat sinks ; Heat transfer ; Reynolds number ; Volume fraction ; Nanofluidics
  8. Source: International Journal of Heat and Mass Transfer ; Volume 55, Issue 15-16 , July , 2012 , Pages 4366-4375 ; 00179310 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0017931012002475