Joe,
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.
Don W4DNR
Quoting Joe <nss@mwt.net>:
In the big Eimac water cooled tubes, what and how did they use
liquid cooling?
Joe WB9SBD
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