Pool boiling of Novec 7300 and self-rewetting fluids on electrically-assisted supersonically solution-blown, copper-plated nanofibers

Rakesh P. Sahu, Sumit Sinha-Ray, Suman Sinha-Ray, Alexander Yarin

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Pool boiling of Novec 7300 fluid and self-rewetting water-heptanol mixtures on bare copper surface and a copper surface coated with copper-plated nanofibers is studied experimentally. The experimental data revealed a significant increase in the heat removal rate up to the critical heat flux (CHF) on the copper-plated nanofiber surfaces in comparison with bare copper surfaces. Also, the critical heat flux increases on the copper-plated nanofiber surface, albeit it is reached at a lower surface superheat in comparison with bare copper surface. Prolong boiling in water facilitates oxidation of the layer of copper-plated nanofibers, and diminishes its roughness, albeit does not affect the heat transfer rate.

Original languageEnglish
Pages (from-to)83-93
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume95
DOIs
Publication statusPublished - 2016 Apr 1

Keywords

  • Copper-plated nanofibers
  • Nano-textured surfaces
  • Pool boiling enhancement
  • Supersonic solution blowing

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes

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