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An experimental study has been done to define the capillary characteristics of a novel a type of copper metal foam which is to be used as a wick in flat heat pipes for electronic cooling. Capillary properties such as permeability (K) and effective pore radius (reff) are critical in defining the capillary limit of heat pipes, because their ratio (K/reff) i s a measure of pumping capacity of the wicking...
A methodology for the design of commercial-scale sources for the evaporation of Cu, Ga, and In is described. Semi-empirical flow equations are utilized in predicting the internal pressure profile, and compared against temperature profiles generated by finite element modeling. This approach allows for the prediction of condensation within the source, and subsequent droplet ejection towards the substrate...
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