If a tube is convection, conduction, radiation, liquid or vapor phase
cooled has to do with how heat ,produced by the kinetic energy from
colliding electrons, is removed from the anode. From there it may pass
from one place to another until ultimately dissipated into the environment
by all sort of heat transfer mechanisms. There are some very minor points
about this that can be argued, such as, in the case of the convection
cooled tubes or even the radiation cooled tubes where there is thermal
conduction from the side of the anode where the electrons collide to the
surface where it is dissipated. But that is a very minor point except to
the nitpicking purest.
73
Bill wa4lav
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