Enthalpy

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Enthalpy

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A mathematically defined thermodynamic function of state h = u + pv where h is specific enthalpy; u is specific internal energy; p is pressure; and v is specific volume. Also called heat function. </dd>
The change in enthalpy measures the heat imparted to a system during a reversible isobaric process:

dh = dq where dq is the heat increment per unit mass. For a

perfect gas,

dh = c_pdTwhere c_p is the specific heat

at constant pressure and dT is the temperature increment. [[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use