There are liquid cooling systems available for CPUs and graphics cards,
used by gamers and overclockers. Have no idea how this would compare to
cooling a 1500 watt RF power amplifier but probably more analogous than
an airplane engine.
73,
Drew
AF2Z
On 06/02/18 17:09, Dauer, Edward wrote:
I have been following this thread with interest because I have a KPA1500 on
order, and I have very limited flexibility as to where the RF deck can go
compared to where I will have to sit.
Don's video was very well done and a great help in understanding the realities.
I know zero about thermodynamics, and so wanted only to say thanks to everyone
who is contributing ideas, and to make but two comments.
First, as to water cooling, I suspect it would be a huge weight penalty to get
the cooling fluid everywhere it needs to be. So far as I know there is only
one reciprocating engine made for aircraft that has a water jacket. (There
might be others nowadays - I haven't owned an airplane for some years.) The
reasons others don't are reliability, safety, complexity, and - mostly -
weight. Second, isn't this largely a contest-operating issue? I believe we
are still governed by the rule that we may use only that amount of power
necessary for the communication. I contest too, so I'll face the problem on
those occasions, but not for casual ragchews. I plan to make some graphs of
when in terms of time, power, mode and band the fans on mine kick up a notch,
and use it as a general operating guideline if I need to.
Ted, KN1CBR
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