> > > Suggestion - invert what you have so the liquid is on the bottom with
> > the coolant line at the bottom of the vessel. Place the spring on the
> > air side with a shutoff valve at the base of the coolant for
> > pre-filling
> > the unit with liquid during maintenance. The package would be at the
> > low
> > point in the system to maintain fluid in the system. At the high
> > point
> > in the system have a small accumulator / air bleed valve with sight
> > glass - at preflight you look for trapped air in the sight glass and
> > crack the valve to let out the small amount of air. This should not
> > be
> > regular as the constant pressure accumulator will expand and contract
> > with the 10% change in volume the system will experience every fight.
> > Ideas ?
> > -dave
> > Dave,
> I had some thoughts along those lines, i.e. coolant at the bottom, air
> raises to the surface - could have a one way valve in the sealing section
> which separates the  coolant from the spring/air side (top). Or something
> like a pool filter air release valve( as you say).
> Question, if you have a spring do you still need air pressure?
> George ( down under)
>
Dave, George

Interesting direction you are heading. If I understand it correctly you need
to  separate gases from liquid right?  Paul's/Mazda's bringing liquid in
from the side creates a spin which along with a column and lesser pressure
area (increased volume) helps to degas the liquid.

For reference only <http://www.mazzei.net/degsep.htm>
here is how we used to do it for industrial ozone gas and water purification
systems

Doug in Japan.

Yes, the sring is a bit redundnat with air pressure - maybe you'd drop a
few grams to leave it out.

I think what we are trying to accomplish is 2 fold - in the conventional
radiator the top of the tanks are the highest point in the system. They
sever to separate gass from liquid. They also allow for the expansion/
contraction during cycles. We don't want our planes to look like a Jenny,
so we move the radiator elsewhere such that it can't be the separator and
then why have the large tanks on it that can't be the resurve capacity for
the cycles.

So, IMHO we need these two separte funtions the radiator can't preform for
us now it its great location below the engine. I think a sealed system
offers the best solution and most automakers have found with their pink
long life coolant systems.

-dave



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