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Performance of compressed nickel foam wicks for flat vertical heat pipes

Hansen, Geir; Næss, Erling
Journal article, Peer reviewed
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URI
http://hdl.handle.net/11250/2402625
Date
2015
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  • Institutt for energi og prosessteknikk [4510]
  • Publikasjoner fra CRIStin - NTNU [41867]
Original version
Applied Thermal Engineering 2015, 81:359-367   10.1016/j.applthermaleng.2015.02.040
Abstract
The fabrication and performance of wicks for vertical flat heat pipe applications produced by

compression of nickel foams has been investigated. The permeabilities and the effective pore

radii for the wicks were estimated from rate-of-rise experiments, using the model fluid

heptane. The porosities of the wicks were measured using isopropanol. The results, which

are new and of vital importance for optimum use of such wicks, show that the permeabilities

and the effective pore radii are in the upper range for heat pipe use. The joining pressure

required during the sintering of the wicks was determined, and it was discovered that the

nickel foams turned hydrophilic during the sintering
Publisher
Elsevier
Journal
Applied Thermal Engineering

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