[Amps] Tubes vs. Solid State

[Joe Subich, W4TV]

On 5/2/2012 10:09 AM, Dave Hachadorian wrote:
 > Or, use methanol (BP=148F) or acetone (BP=133F).

What is the energy required for phase change?  If it's too low
you lose the benefit of the reduced boiling point.

In addition, the vapors of both are explosive if you have a
leak in the vicinity or a spark!

73,

    ... Joe, W4TV


On 5/2/2012 10:09 AM, Dave Hachadorian wrote:
> Or, use methanol (BP=148F) or acetone (BP=133F).
>
> Dave Hachadorian, K6LL
> Yuma, Arizona
>
>
> -----Original Message-----
> From: Pete Smith N4ZR
> Sent: Wednesday, May 02, 2012 3:44 AM
> To: Amps at contesting.com
> Subject: Re: [Amps] Tubes vs. Solid State
>
> Regarding vapor phase cooling, I had to smile when I read Dick's
> suggestion to evacuate the cooling system to 1 PSIA, lowering the
> boiling point to 100F.  Seems like this would change everything -
> at the
> cost of additional complexity, of course.  Whoever would have
> thought we
> might see ham amps with vacuum pumps?
>
> 73, Pete N4ZR
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