[Amps] really outrageous amps

[Jim Thomson]

##  Not that I know of.  The 3CW20000A7 is a water cooled version of a 3x10.
The plate + grid current ratings are the same, so you cant run any more 
po...
just more pd.

##  water cooling has its merits, but can be a pita to implement.   You 
still need a
10-25 gpm pump to move the distilled water into a big rad, with a big fan. 
You still have
to dump all that heat.  20 kw pd =  63,000 btu.   1 watt pd = 3.15 btu.

##  in the uk  ...VO stokes book, they say to avoid water cooling like the 
plague.
IMO, I don’t believe it would be that difficult to implement.   Its just a 
simple closed loop system.
The advantages would be the external radiator + fan could be located 
anywhere.... and hot air
exhausted to the outside in summer..and indoors in winter.

##  vapour phase cooling or multi-phase cooling would be the real ticket. 
But eimac discontinued
the smaller vapour phase cooled triodes years ago.   Too bad, With vapour 
phase cooling, the pump
is eliminated.

##  water cooling has its advantages though...like 1000 watts per square cn 
of anode area, vs just
135 watts for vapour phase cooling....... vs  50 watts for air cooled 
triodes.

Jim   VE7RF



-----Original Message----- 
From: Carl
Sent: Thursday, January 22, 2015 2:59 PM
To: Jim Thomson ; amps at contesting.com
Subject: Re: [Amps] really outrageous amps

Has anyone built up a 3CW20000A7?



--------------------------------------------------
From: "Jim Thomson" <jim.thom at telus.net>
Sent: Wednesday, January 21, 2015 12:05 PM
To: <amps at contesting.com>
Subject: [Amps] really outrageous amps

> Date: Tue, 20 Jan 2015 22:11:23 -0600
> From: Ed Hatcher <ed.kv5i at gmail.com>
> To: amps at contesting.com
> Subject: [Amps] Help with QRO ham's web page
>
> I know I had it book marked, but I can't find it. Seems like he was out of
> California. He had breakdown testers and built really outrageous amps and
> had designs and parts as well.
> Thanks and 73,
> Ed-kv5i
>
> ##  You wanted outrageous amps, the real deal ?   Here it is.
>
> http://bear-el.com/    You can get a lot of ideas and how he did various 
> concepts.
>
> Scroll down a bit for the master list.
>
> Jim   VE7RF
>
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