Rich said:
>A blower is too large when it blows the tube out of the socket.
My sentiments,too, but a couple of years back, somebody here said that he'd
worked at a broadcast station where the blower revs had been turned up and tube
life went for a chop because of overheating.
Seemed strange, but is it possible that higher airflow speeds could lead to
vortices developing that could actually cause small volumes around the tube to
have a partial vacuum and no air flow around them, thus leading to localised
overheating?
It's certainly a case with ejectors that the steam speed can be too high for
effective vacuum production: there's an optimum size of cone for a given steam
pressure. I'm assuming that air and steam act much the same.....
I suppose if the blower is arrranged to suck enough air through the anode cooler
in the 'wrong' direction, you don't need any tube retention mechanism!!
73
Peter G3RZP
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