Internal-energy

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Internal-energy

Description

Internal-energy, U [J], can neither be destroyed nor created (first law of thermodynamics: diU/dt = 0). Note that internal (subscript i), as opposed to external (subscript e), must be distinguished from "internal-energy", U, which contrasts with "Helmholtz energy", A, as enthalpy, H, contrasts with Gibbs energy, G.

Abbreviation: U [J]

Reference: Energy


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Units
  • Joule [J]; 1 J = 1 NΒ·m = 1 VΒ·C; 1 cal = 4.184 J
Fundamental relationships
Β» Energy
Β» Exergy
Β» Extensive quantity
Contrast
Β» Force
Β» Pressure
Β» Intensive quantity
Forms of energy
Β» Internal-energy dU
Β» Enthalpy dH
Β» Heat deQ
Β» Bound energy dB
Forms of exergy
Β» Helmholtz energy dA
Β» Gibbs energy dG
Β» Work deW
Β» Dissipated energy diD



MitoPedia concepts: Ergodynamics 

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