[time-nuts] backfill

Charles Steinmetz csteinmetz at yandex.com
Fri Jun 9 02:55:51 EDT 2017

Bob wrote:

> 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 

Best regards,


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