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Originally Posted by Random Precision
I'm guessing that using platinum instead is not an option.
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Good guess! Neither is titanium or zirconium or a bunch of other metals, because this has to be a castable alloy. Which means I only have a handful of choices in stainless steel.
Quote:
Originally Posted by Random Precision
In that case I suppose you're left with increasing the surface area to volume ratio and getting a bigger fan.
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I already maximized the surface to volume ratio for this class of shapes, and this thing more or less is the fan. The primary heat exchange surfaces can be modeled as a pair of semi-infinite planes, where the surface to volume ratio depends only on the size of the gap between the walls. I can't get it any thinner or it won't be castable. And trust me, there is no other way to make this thing. Imagine an exploded view of an orange with a whole whack of tiny fins between all the slices. So anyway, I'm going to try kind of popping it inside out and work the HX numbers on that family of shapes. It keeps me off the streets.