An application of the dynamic balance equation

Document Type

Conference Proceeding

Publication Date

12-1-2001

Abstract

The Onsager formalism (generalized fluxes, sources and variables) is used to construct the dynamic balance equation. Previously this equation has been applied to the investigation of energy balance, which includes all interactions between a system and the environment. In this paper the work and non-work interactions are discussed separately. The corresponding forms of the generic balance equation are considered and the dynamic balances of the representative variables (PV̄ and enthalpy) are examined. It is shown that the equilibrium relations constitute particular cases of the constructed equations. At the same time the dynamic equations also reveal additional information about a system in question, for example, the developed equations determine the available work of a non-steady process. The paper demonstrates that the dynamic thermodynamic functions constitute an effective tool for systems description.

Identifier

0346122828 (Scopus)

Publication Title

American Society of Mechanical Engineers Advanced Energy Systems Division Publication AES

First Page

395

Last Page

398

Volume

41

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