Re: [AMBIENTENERGY] Fwd: Re: Magnet refrigeration
- I think the best method is a hot side and a cold side, the material inside
in a vacuum.
A box shaped like a book with the gadolinium visiting the cover then the
If you expose it to air a metal would be the best coating.
needs to be thick enough that you don't get a hole.
It will self destruct if you do.
Gadolinium is shipped in argon.
----- Original Message -----
From: "Charles Ford" <cjford1@...>
Sent: Thursday, February 21, 2002 7:50 AM
Subject: Re: [AMBIENTENERGY] Fwd: Re: Magnet refrigeration
> --- kirk <kirk@...> wrote:
> > I don't think gadolinium's operating range is cold enough for
> > food
> > preservation.
> > We were looking at it to cool avionics over 10 years ago.
> > At that time it was $200 a pound. Compared to $30 a gram at
> > lab supply
> > companies that is a lot cheaper.
> > Gadolinium is pretty reactive. You would have to plate
> > something over it to
> > protect it from oxygen and water.
> > Kirk
> Yes. In the case of the video head it is coated with acrylic.
> Another thought is that the ultimate final cooling medium is
> air. Why not go direct? Skip the losses of moving that water
> around. Plus I was thinking that maybe they are approaching it
> all wrong. Recycle hard disk plates. :-) They are already
> built into the right shape.
> Charles Ford