[Amps] SS amps watercooling - was PowerGenius XL

donroden at hiwaay.net donroden at hiwaay.net
Tue Mar 7 10:42:32 EST 2017


On the big 55KW  UHF TV klystrons, we just used steam distilled water.
   ( Forty years maintaining water cooled klystrons. )

There may have been some copper or solder contamination after several  
years, and when the distilled water evaporated ( open to atmosphere ),  
we just added more distilled water.    Some time between the first  
fill and subsequent re-fills, there was probably an equilibrium of  
leached metals. ( subject to discussion )

We always ran our vapor-phase klystrons WAAY below steam ( 212degrees )
typically more like 160 degrees.    We were able to do that because we  
had a 120KW water-to-air radiator and the transmitter was only 66KW.   
I understood the physics of vapor phase, but saw no advantage of  
keeping everything at boiling.  It just created more problems than it  
was worth.


Quoting Joe <nss at mwt.net>:

> In the big Eimac water cooled tubes, what and how did they use  
> liquid cooling?
> Joe WB9SBD

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