Feser's New Lineup

[gmat]

What I think is funny is that even when the research money is available for advanced concepts for heat rejection for things like advanced fuel cells and space applications, heat pipes, louvered fins, and microchannels are what they use. Of course, there are expensive tweaks which increase efficiency like advanced materials or extensive optimizaation but essentially that is state of the art I think. This is part of the reason why I'm really curious about this launch and especially with the claims above.

That was the meaning of my post too. Cray dont mind one second about costs. They are providing the most powerful computing solutions on earth (along with NEC and IBM), i dont think they would cut corners on anything. The cooling system used for the Jaguar for instance is a very interesting design, but again i see fins and microchannels... I know the army use watercooling on some equipments, they have specialist engineers who develop full board WB's for their rackable computer boards, those look a lot like what EK does.
I have seen that kind of tube rad (from what i guess on limited photos we have for now) but it was for liquid-to-liquid heat exchangers, not liquid-to-air. As air has a very very low density and heat capacity (well, compared to water), the heat transfer coefficient has to be improved by huge surface area, and that where fins come in. I'm curious to see a proper closeup of their tubes, what counts is the total surface area exposed to airflow, and of course the air flow itself.
(edit) and what kind of exchangers are there on the Bugatti Veyron for example ? We know they spared no expense on R&D on that project and selling the cars almost at cost, just for them being technological demonstrators.