Pressure Change Due to Varying Temperature of a Closed Cell Oil Tank with No Expansion Chamber
Pressure Change Due to Varying Temperature of a Closed Cell Oil Tank with No Expansion Chamber
(OP)
I am trying to calculate the pressure change due to temperature fluctuations of an incompressible fluid (Transmission Fluid) inside a closed reservoir tank.
According to an equation I have found, h2 - h1 = c(T2-T1) + v(P2-P1), provides property changes of incompressible fluids where:
h = enthalpy
c = specific heat
T = Temperature
v = specific volume
P = Pressure
First, is this this the correct equation? Second, is there a good place to find these values for Transmission Fluid?
THANKS!!
According to an equation I have found, h2 - h1 = c(T2-T1) + v(P2-P1), provides property changes of incompressible fluids where:
h = enthalpy
c = specific heat
T = Temperature
v = specific volume
P = Pressure
First, is this this the correct equation? Second, is there a good place to find these values for Transmission Fluid?
THANKS!!





RE: Pressure Change Due to Varying Temperature of a Closed Cell Oil Tank with No Expansion Chamber
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P.E. Metallurgy, Plymouth Tube
RE: Pressure Change Due to Varying Temperature of a Closed Cell Oil Tank with No Expansion Chamber
http://www.eng-tips.com/faqs.cfm?fid=1339
Liquids are not incompressible and you need to include the bulk modulus to get a sensible answer.
However even the smallest amount of compressible gas will nullify any liquid expansion case.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Pressure Change Due to Varying Temperature of a Closed Cell Oil Tank with No Expansion Chamber
The first equation listed gives the change in enthalpy, but I don't see that it immediately relates to the problem at hand.
RE: Pressure Change Due to Varying Temperature of a Closed Cell Oil Tank with No Expansion Chamber
RE: Pressure Change Due to Varying Temperature of a Closed Cell Oil Tank with No Expansion Chamber
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.