Oil heat capacity 2

[AndreChE]

Does anyone know the name/author of this correlation for heat capacity of an oil?

cp = (1.63 + 0.0034*T) * SG ^ (-0.5)

cp in J/kg.ºC
T in ºC
SG - Specific gravity

Where is it referenced?

Thank you.
AndreChE

 

[25362]

One small correction: Cp is in kJ/(kg.^oC) not J/....
A clarification: specific gravity in this case refers to the ratio of the mass of a given volume of oil to the mass of an equal volume of water, both taken at 60^oF.

The above formula appears in Engineering Tribology by Stachowiak and Batchelor, as Vol. 24 of Elsevier's Tribology Series. The formula is said to give a rough estimation of Cp values. They quote it from A. Cameron, Basic Lubrication Theory, Ellis Horwood Limited, 1981.

 

[AndreChE]

Sorry, I know that is kJ//kg.ºC)....

In which issue of Elsevier Vol.24 is this correlation stated?

Thank you
AndreChE

 

[25362]

1993.

ISBN 0 444 89235 4

formula 2.21 .

Good luck.