🚀 go-pugleaf

In <78885@ncratl.AtlantaGA.NCR.COM> mwilson@ncratl.AtlantaGA.NCR.COM (Mark Wilson) writes:

>What you have done in essence is vaporized the flywheel.  If anyone knows
>the heat of vaporization of carbon-carbon please post it.

>My intuition is that while it will take more energy to vaporize than does
>iron, it won't absorb anywhere near enough to make a difference.

Sorry about responding to my own post, but I forgot something.

The vaporized carbon-carbon will deposit itself on the first thing that
it encounters that is cold enough to cause it to condense.
In this case, the inside of the containment vessel.  By condensing the fluff
will transfer the heat of vaporization to the containment vessel.
By vaporizing the flywheel, you have not diverted the energy, but mostly
just delayed it a bit.

The only way to get rid of this energy is to vaporize material.
If the containment was made out of carbon-carbon as you suggest, then it
must be massive enough that after the requisite amount of material has
vaporized, there is still a thick enough wall to withstand the pressure
of all of that hot gas inside the containment vessel until the unit
as a whole has had enough time to radiate the energy away as heat.

As I see these are the data points we need for carbon-carbon.

Heat of vaporization.  (how much material is needed to absorb the energy)
Vaporization temperature of carbon-carbon.
       (This will be the temperature of the gas inside the containment
       vessel.  If it were any hotter it would vaporize more of the
       containment and cool itself off.  Since we know the amount of
       c-c that has vaporized, and the gases temperature, we ought
       to be able to calculate the pressure inside the containment.)
Tensile strength of c-c.  (This will tell us how thick the remaining
	containment vessel will have to be to contain the pressure
	we calculated above.  Does anyone know if heat affects the
	strength of c-c, since the inside surface of the vessel will
	be just below the vaporization point.
It might be nice if we knew the thermal resistance of c-c.  (That way
	we could calculate just how hot the outside surface of the
	containment will get, and how long it will take to cool
	down.)
-- 
Mob rule doesn't become any prettier, just because the mob start to call itself
a government.
It ain't charity if you are using someone else's money.
Mark.Wilson@AtlantaGA.NCR.com