The present study describes a dual-stage electroplating method developed to construct numerous active nucleation sites on a target surface for the purpose of enhancing the pool boiling heat transfer performance. Electroplating with high current densities (0.17 ∼ 1.2 A/cm2) builds micro-scale copper dendrites and nodules on the base surface (oxygen free copper) and low current density electroplating (fixed, 0.05 A/cm2) follows to achieve the strong bonding strength of the micro-structures, which enable the coating to be robust in terms of corrosion and endurance. Pool boiling experiments show that the electroplated surfaces extend the boiling critical heat flux by 40∼70% for two working fluids tested and augment the boiling heat transfer coefficients by ∼700% and ∼600% in saturated R-123 and FC-72, respectively, at atmospheric pressure over a baseline (plain surface).
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ASME 2014 International Mechanical Engineering Congress and Exposition
November 14–20, 2014
Montreal, Quebec, Canada
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4956-9
PROCEEDINGS PAPER
Microporous Coating by Dual-Stage Electroplating to Enhance Pool Boiling Performance of Saturated R-123 and FC-72
Sang M. Kwark,
Sang M. Kwark
University of Texas at Arlington, Arlington, TX
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Joo Han Kim,
Joo Han Kim
University of Texas at Arlington, Arlington, TX
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Seung M. You
Seung M. You
University of Texas at Dallas, Richardson, TX
Search for other works by this author on:
Sang M. Kwark
University of Texas at Arlington, Arlington, TX
Joo Han Kim
University of Texas at Arlington, Arlington, TX
Seung M. You
University of Texas at Dallas, Richardson, TX
Paper No:
IMECE2014-36828, V08BT10A056; 8 pages
Published Online:
March 13, 2015
Citation
Kwark, SM, Kim, JH, & You, SM. "Microporous Coating by Dual-Stage Electroplating to Enhance Pool Boiling Performance of Saturated R-123 and FC-72." Proceedings of the ASME 2014 International Mechanical Engineering Congress and Exposition. Volume 8B: Heat Transfer and Thermal Engineering. Montreal, Quebec, Canada. November 14–20, 2014. V08BT10A056. ASME. https://doi.org/10.1115/IMECE2014-36828
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