csteinmetz at yandex.com
Fri Jun 9 02:55:51 EDT 2017
> In this case hydrogen + oxygen (like from oxidized metal) goes to H20. You very much do
> not want water running around inside your crystal holder… Helium is inert.
The insides of mains alternators are almost entirely metal -- tons and
tons of copper tubing, and the casings and rotor shaft are steel. And
the alternators must operate at a relative humidity of absolute zero.
The problem is far from insurmountable, even at that huge scale.
Dealing with it should be very much easier at a scale of cubic centimeters.
They use condensers to remove the water during the hydrogen purge cycle,
which (for mains alternators) lasts several weeks. I watched the
procedure several times 25 years ago, but I don't recall the particulars
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