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Description
Exergy includes external and internal work. Exergy as the external work is defined in the First Law of thermodynamics as a specific form of energy. Exergy as the dissipated Gibbs or Helmholtz energy is the irreversibly dissipated (internal) loss of the potential of performing work as defined in the Second Law of Thermodynamics.
Changes of exergy dG plus bound energy yield the enthalpy change:
dH = dG + T∙dS = dG + dB [Eq. 1]
Abbreviation: E; various [J]
Reference: Gnaiger 1993 Pure Appl Chem
Communicated by Gnaiger E 2022-07-11
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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
References
- Gnaiger E (1993) Nonequilibrium thermodynamics of energy transformations. Pure Appl Chem 65:1983-2002. - »Bioblast link«
MitoPedia concepts:
Ergodynamics