Does anyone know what effect entrained air
in an accumulator will affect the power density.\ ie;would a 10 gallon accumulator
charged to say 5000 psi.
one has virtually no entrained air the second
has 20% entrained air.
How much energy loss will there be?

Never - Never use Air in an hydraulic accumulator.
So the energy loss is not relevant.

Try your question at this web site on all things Oil:
http://forums.noria.com/eve

Also take a look at this writeup:
http://www.insidersecretstohyd...r-contamination.html

Look at www.Hydac.com you can download a tool to calculate a Accumulator.

use only nitrogen in accumulators !!!!!

Ya, ya, ya, only use nitrogran in the accumaltor. OK.
I know the answer to this too assuming the 20& is air in the accumulator. The answer should have units of energy/volume. Joules/cubic meter would be good.

So does any body want the answer? Just ask Bud to resign as moderator. He has had his chance. It is obvious that I can wait to provide the answer.
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This message has been edited. Last edited by: Peter Nachtwey,