List of thermodynamic properties: Difference between revisions
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Specific properties are expressed on a per mass basis; in some circumstances other dimensions could be used, such as per-mole. |
Specific properties are expressed on a per mass basis; in some circumstances other dimensions could be used, such as per-mole. |
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'''Regarding Work and Heat:''' |
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Note that [[Work (thermodynamics)|work]] and [[heat]] above are listed as ''process quantities:'' They are, in fact, not thermodynamic properties, but flows of energy across a system boundary. Systems do not ''contain'' work, but can ''perform'' work, and likewise, in formal thermodynamics, systems do not ''contain'' heat, but can ''transfer'' heat. Informally, however, a difference in the energy of a system that occurs solely because of a difference in its temperature is commonly called ''heat'', and the energy that flows across a boundary as a result of a temperature difference is, in fact, heat in the technical sense. |
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==See also== |
==See also== |
Revision as of 16:46, 20 April 2014
Specific properties are expressed on a per mass basis; in some circumstances other dimensions could be used, such as per-mole.
Regarding Work and Heat:
Note that work and heat above are listed as process quantities: They are, in fact, not thermodynamic properties, but flows of energy across a system boundary. Systems do not contain work, but can perform work, and likewise, in formal thermodynamics, systems do not contain heat, but can transfer heat. Informally, however, a difference in the energy of a system that occurs solely because of a difference in its temperature is commonly called heat, and the energy that flows across a boundary as a result of a temperature difference is, in fact, heat in the technical sense.
See also
References
- ^ Aylward, Gordon; Findlay, Tristan (2002), SI Chemical Data 5th ed. (5 ed.), Sweden: John Wiley & Sons, p. 202, ISBN 0-470-80044-5
- ^ Cengel, Yunus A.; Boles, Michael A. (2002). Thermodynamics: an engineering approach. Boston: McGraw-Hill. p. 79. ISBN 0-07-121688-X.