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Re: [Amps] re cooling of coils

To: Traian <yo9fzs@office.deck.ro>
Subject: Re: [Amps] re cooling of coils
From: R.Measures <r@somis.org>
Date: Mon, 6 Sep 2004 02:21:31 -0700
List-post: <mailto:amps@contesting.com>

On Sep 6, 2004, at 12:35 AM, Traian wrote:


As I know, the sodium is used for heat transfer for some
power plant nuclear reactors also?!...

However, the coolant of choice for large electric generators is hydrogen gas since it carries away about 5-times as much heat as air.

73, Traian


Vic Rosenthal wrote:


CLIVE COLLINS wrote:

 Their answer after a
lot of research was to make the exhaust valve stem hollow and fill it
with Sodium with significantly good results.

Sodium valves were used in a lot of internal combustion engines, not
just Nortons! The idea is that the liquid sodium inside the valve stem
would actually flow, thus transferring heat by convection away from the
valve face and through the valve guide to the cylinder head. In the
case of coils, there's no obvious analogue for the cylinder head to
dissipate heat.


--
73,
Vic, K2VCO


Richard L. Measures, AG6K, 805.386.3734. www.somis.org

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