RE: water filled tubing primary?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Mccauley, Daniel H by way of Terry Fritz <twftesla-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>



 
> Could you (in theory) use water filled (lets say, 1/4 inch)

> tubing for your primary?

	Sure.
	However:
		Why?
		What advantage?
		or
		What problem is being solved.

	(if heating:
		1) Heating of primaries, at most practical
		powers is not an issue.
		2) Simply filling the tubing with water
		will not cool them: the water would need
		to be piped OUT of the primary to an
		external heat exchanger.  Doable, with
		rubber/plastic plumbing, however there is
		not (generally) a problem with heating.)

Actually, copper tubing won't even work to well.  Remember, that tubulence
needs to be present
in air or liquid to increase efficiency of heat transfer.  If you ever
looked inside the primaries of huge transformers which use liquid cooling,
the interior surface of the (hollow rectangular conductor which they use),
is very irregular with lots of bumps, ridges, etc... to create lots of
turbulence.

Dan