- #1
Tom C
- 4
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I am studying compressed air flow through a valve at a high pressure differential (3000psig to atmosphere). The air will be saturated at 3000 psig and in other circumstances it will be dried to a dew point of -10 deg F.
My purpose is to calculate the temperature of the air stream at the valve exit and will assume the flow is isenthalpic. The simple equation I would prefer to start with is :
µ = (dT/dP) at constant enthalpy
However, I have not been able to find tabulations of µ for air at at various high and low pressure. Can anyone refer an on-line source for this information?
I suppose an alternative method would be to use enthalpy tables, but can't find enthalpy tables for air at the high pressure condition either.
Suggestions and alternate ideas for solution are gladly received.
Thanks
My purpose is to calculate the temperature of the air stream at the valve exit and will assume the flow is isenthalpic. The simple equation I would prefer to start with is :
µ = (dT/dP) at constant enthalpy
However, I have not been able to find tabulations of µ for air at at various high and low pressure. Can anyone refer an on-line source for this information?
I suppose an alternative method would be to use enthalpy tables, but can't find enthalpy tables for air at the high pressure condition either.
Suggestions and alternate ideas for solution are gladly received.
Thanks