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Heat
Description
Heat is a form of energy [J]. The relationship between heat and work provides the foundation of thermodynamics, which describes transformations from an initial to a final state of a system. In energy transformations heat may pass through the boundary of the system, at an external heat flow of deQ/dt.
Abbreviation: Q, Qth [J]
Reference: Energy
Communicated by Gnaiger E (2019-01-05) last update 2020-11-25
Symbol Q
- To distinguish Q in thermodynamics and electricity, Qth [J] is used for heat, and Qel [C] for charge.
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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
