Electrohydrodynamic conduction pumping-driven liquid film flow boiling on bare and nanofiber-enhanced surfaces

Viral K. Patel, Jamal Seyed-Yagoobi, Suman Sinha-Ray, Sumit Sinha-Ray, Alexander Yarin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Liquid film flow boiling heat transfer driven by electrohydrodynamic (EHD) conduction pumping is experimentally studied on a surface with a novel metal-plated nanofiber-mat coating. The nanotextured surface is formed on a copper substrate covered by an electrospun polymer nanofiber mat, which is copper-plated as a postprocess. The mat has a thickness of about 30 1/4m and is immersed in saturated HCFC-123. The objective is to study electrowetting of the copper-plated nanofiber-enhanced surface via EHD conduction pumping mechanism for the entire liquid film flow boiling regime leading up to critical heat flux (CHF), and compare it to the bare surface without EHD-driven flow. The results show that with the combination of these two techniques, for a given superheat value, enhancement in heat flux and boiling heat transfer coefficient is as high as 555% compared to the bare surface. The results are quite promising for thermal management applications.

Original languageEnglish
Article number041501
JournalJournal of Heat Transfer
Volume138
Issue number4
DOIs
Publication statusPublished - 2016 Apr 1
Externally publishedYes

Keywords

  • boiling
  • conduction pumping
  • electrohydrodynamics
  • heat transfer
  • heat transport
  • nanofiber enhancement

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

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