Thermodynamic Energy Equation

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Thermodynamic Energy Equation

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The mathematical statement of the concept of conservation of energy embodied in the first law of thermodynamics. For reversible processes of a perfect gas, it may

be written in the form pQ = ρc_v (dT/dt) - (p/ρ) (dρ) (dt)

where pQ is the rate of energy addition per unit volume by heating (including the effects of radiation, molecular conduction, condensation water vapor, and the generation of heat by friction); T is the Kelvin temperature; c_v is the specific heat at constant volume; p is pressure; and ρ is density. See energy equation. [[/a>|/a> ]]

References

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