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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 N·m = 1 V·C; 1 cal = 4.184 J
- Units
- Fundamental relationships
- » Energy
- » Exergy
- » Extensive quantity
- Fundamental relationships
- Contrast
- » Force
- » Pressure
- » Intensive quantity
- Contrast
- Forms of energy
- » Internal-energy, dU
- » Enthalpy, dH
- » Heat, deQ
- » Bound energy, dB
- Forms of energy
- Forms of exergy
- » Helmholtz energy, dA
- » Gibbs energy, dG
- » Work, deW
- » Dissipated energy, diD
- Forms of exergy
MitoPedia concepts:
Ergodynamics