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Journal of Nanoparticle Research

, Volume 13, Issue 11, pp 6207–6216 | Cite as

Self-rewetting carbon nanofluid as working fluid for space and terrestrial heat pipes

  • R. Di PaolaEmail author
  • R. Savino
  • D. Mirabile Gattia
  • R. Marazzi
  • M. Vittori Antisari
Special Issue: Nanostructured Materials 2010

Abstract

Thermal management is very important in modern electronic systems. Recent researches have been dedicated to the study of the heat transfer performances of binary heat transfer fluids with peculiar surface tension properties and in particular to that of “self-rewetting fluids”, i.e., liquids with a surface tension increasing with temperature and concentration. Since in the course of liquid/vapor-phase change, self-rewetting fluids behavior induces a rather strong liquid inflow (caused by both temperature and concentration gradients) from the cold region (where liquid condensates) to the hot evaporator region, this fluids have been proposed and investigated as new heat transfer fluids for advanced heat transfer devices, e.g., heat pipes or heat spreaders for terrestrial and space applications (Savino et al. in Space Technol 25(1):59–61, 2009). The present work is dedicated to the study of the thermophysical properties of a new class of heat transfer fluids based on water/alcohol solutions with suspended carbon nanostructures, in particular single-wall carbon nanohorns (SWNH), synthesized by a homemade apparatus with an AC arc discharge in open air (Mirabile Gattia et al. in Nanotechnology 18:255604, 2007). SWNHs are cone-shaped nanoparticles with diameters between 1 and 5 nm and lengths in the range of 20–100 nm. SWNHs could be found in the form of quite-spherical aggregates with diameters ranging from 20 to 100 nm. The paper also discusses the results of these investigations and laboratory characterization tests of different heat pipes, including reference ordinary heat pipes and innovative pipes filled with self-rewetting fluids and self-rewetting nanofluids. The potential interest of the proposed studies stems from the large number of possible industrial applications, including space technologies and terrestrial applications, such as cooling of electronic components.

Keywords

Single-wall nanohorns Nanofluids Self-rewetting Heat pipe 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • R. Di Paola
    • 1
    Email author
  • R. Savino
    • 1
  • D. Mirabile Gattia
    • 2
  • R. Marazzi
    • 2
  • M. Vittori Antisari
    • 2
  1. 1.DIAS DepartmentUniversity of Naples Federico IINaplesItaly
  2. 2.UTTMAT, ENEARomeItaly

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