Related Resources: thermodynamics

Internal Energy of Various Gases

Internal Energy of Various Gases Given in Btu/ (lb·mol) above 520 °R

The table calculator given below gives the internal energy of various common gases in Btu/ (lb·mol) measured above 520°R (60°F). The corresponding values of the enthalpy are obtained by adding the value of Apv from the last column.

The internal energy of a thermodynamic system is the energy contained within it, measured as the quantity of energy necessary to bring the system from its standard internal state to its present internal state of interest, accounting for the gains and losses of energy due to changes in its internal internal state, such as temperature.

Value are given for the following:

O₂
N₂
Air
CO₂
H₂O
H₂
CO

Source:

L. C. Lichty, "Internal Combustion Engines," p. 582, derived from data given by Hershey, Eberhardt, and Hottel, Trans. SAE, 31, 1936, p. 409.

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