: Exergy is a very important thermodynamic quantity in several fields such as economy, engineering, and ecology and yet it has attracted little attention in pure physics. One of the main problems of the currently used definition of exergy is its dependence on an arbitrarily chosen reference state, which is the thermodynamic state of a reservoir the system is supposedly in contact with. In this paper, starting from a very general definition of exergy, a formula is derived for the exergy balance of a general open continuous medium without any reference to an external environment. A formula is also derived for the most suitable thermodynamic parameters of the Earth atmosphere when seen as an external environment in the usual exergy applications.

Exergy of an open continuous medium / Becattini, F. - In: PHYSICAL REVIEW. E. - ISSN 2470-0045. - ELETTRONICO. - 107:(2023), pp. 0-0. [10.1103/PhysRevE.107.034135]

Exergy of an open continuous medium

Becattini, F
Conceptualization
2023

Abstract

: Exergy is a very important thermodynamic quantity in several fields such as economy, engineering, and ecology and yet it has attracted little attention in pure physics. One of the main problems of the currently used definition of exergy is its dependence on an arbitrarily chosen reference state, which is the thermodynamic state of a reservoir the system is supposedly in contact with. In this paper, starting from a very general definition of exergy, a formula is derived for the exergy balance of a general open continuous medium without any reference to an external environment. A formula is also derived for the most suitable thermodynamic parameters of the Earth atmosphere when seen as an external environment in the usual exergy applications.
2023
107
0
0
Becattini, F
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1308141
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