[ATM] A Kiln in a Bell Jar

[Michael Wheatley <atmwheatley@telus.net>]

A kiln in a bell jar sounds like a great idea.

Does anyone out there know off hand how the heat loss from a kiln 
element is distributed, convection/conduction/radiation?

You might need a helium atmosphere rather than a vacuum to keep the 
elements cool and the kiln hot.

Hot gas at the vacuum pump shouldn't be a concern.  Regardless of the 
temperature there would be little heat and a cold trap would be 
desirable in any case.

Michael Wheatley



At 09:27 AM 7/12/06 -0400, James wrote:

>Also, as my obligatory crazy idea of the day, have you considered building a
>vacuum chamber large enough to house your kiln?   No more bubble 
>problems, near
>zero oxidation, reduced thermal mass, and probably better 
>temperature control.
>Doesn't have to be a great vacuum, a few Torrs worth of pressure 
>should be fine.
>
>
>Take Care,
>James Lerch

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