Re: Cooling MOFSETS and IGBT's.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jimlux-at-earthlink-dot-net>



> 
> However....  I would hope a SSgap would not require anything but modest air
> heat sinks.  If I go pumping hundreds of watts into heating the water, that
> energy is coming directly out of the streamers energy...  I think the trick
> is to keep the power dissipated in a solid state gap as low as possible so
> the streamer gets all the power.
> 

But, shouldn't we be looking forward to multi kilowatt systems.  If your SS
gap is, say, 95% efficient, at 30 kW, you're still looking at dissipating
150W, which is certainly within air cooling range, but....  And, as you
move up to 100 kW and up... 

Actually, sinking the entire thing in oil or even running it in a
pressurized air tank at 5 Atm (the fan will still work just fine at 5 Atm
(although, a bit slower running from the increased load), but now, you get
5 times better transfer efficiency...