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Journal of Enhanced Heat Transfer
IF: 0.562 5-Year IF: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

ISSN Print: 1065-5131
ISSN Online: 1563-5074

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v13.i2.60
pages 175-184

Enhanced Pool Boiling CHF in FC-72 from a Modulated Porous Layer Coating

Klemen Ferjancic
Fagot, d.o.o., Ljubljana, Slovenia
D. Rajselj
Kekovaricon, d.o.o., Zuzemberk, Slovenia University of Ljubljana, Faculty of Mechanical Engineering, Ljubljana, Slovenia
Iztok Golobic
Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, Ljubljana, 1000, Slovenia

ABSTRACT

A modulated porous layer coating is effective in enhancing the nucleate boiling curve and critical heat flux. This coating, which is defined as periodically non-uniform thickness, was made from 200 μm or 50 μm copper particles sintered to form protuberances of 1 mm height at distances of 0.5 mm or 1mm. With respect to a plain copper surface, the critical heat flux for saturated pool boiling in FC-72 with the use of modulated porous layer coatings, at a cluster cone height of 0.5 mm was greater by a factor of 1.34, and at a height of 1 mm it was greater by a factor of 2.23.