0
Research Papers: Evaporation, Boiling, and Condensation

Subcooled Boiling of PF-5060 Dielectric Liquid on Microporous Surfaces

[+] Author and Article Information
Mohamed S. El-Genk1

Regents’ Professor and Founding Director of Institute for Space and Nuclear Power Studies, Department of Chemical and Nuclear Engineering; Department of Mechanical Engineering, University of New Mexico, Albuquerque, NM 87131-0001mgenk@unm.edu

Amir F. Ali

Department of Mechanical Engineering and Institute for Space and Nuclear Power Studies, University of New Mexico, Albuquerque, NM 87131-0001

1

Corresponding author.

J. Heat Transfer 133(8), 081503 (May 03, 2011) (8 pages) doi:10.1115/1.4003748 History: Received August 18, 2010; Revised March 01, 2011; Published May 03, 2011; Online May 03, 2011

Presented are the results of experiments that investigated nucleate boiling of PF-5060 on microporous Cu surface layers at saturation and 10 K, 20 K, and 30 K subcooling. The three microporous layers, electrochemically deposited on 10×10mm2 Cu substrates and investigated herein, are 139μm, 171μm, and 220μm thick. The critical heat flux increases linearly with increased subcooling, ΔTsub, at an average rate of 4.5%/K. For the 171μm thick, Cu microporous surface, saturation boiling CHF of 27.8W/cm2 increases to 63.25W/cm2 at ΔTsub=30K, while the saturation hMNB of 13.5W/cm2K decreases slightly to 12.7W/cm2K at ΔTsub=30K. The values of the surface superheat, ΔTsat, at hMNB and CHF increase from 2.0 K and 2.16 K at saturation to 4.2 and 6.42 K at 30 K subcooling.

FIGURES IN THIS ARTICLE
<>
Copyright © 2011 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Electrochemical disposition of nanodendrite layers

Grahic Jump Location
Figure 2

SEM images. The deposited Cu nanodendrites and microporous surface layers

Grahic Jump Location
Figure 3

Cross-sectional views of the assembled test section

Grahic Jump Location
Figure 4

Reproducibility of saturation boiling and hNB Curves of PF-5060 on conditioned 230 μm thick, microporous surface layer

Grahic Jump Location
Figure 5

Comparison of saturation boiling and hNB curves on Cu microporous surface layers of different thicknesses

Grahic Jump Location
Figure 6

Subcooled boiling curves on Cu microporous surfaces

Grahic Jump Location
Figure 7

Subcooled nucleate boiling heat transfer coefficient curves on Cu microporous surfaces

Grahic Jump Location
Figure 8

Effect of subcooling on hMNB on Cu microporous surfaces

Grahic Jump Location
Figure 9

Effect of subcooling on CHF on Cu microporous surfaces

Grahic Jump Location
Figure 10

Linear dependence of CHF on liquid subcooling

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In