000089690 001__ 89690
000089690 005__ 20210902121706.0
000089690 0247_ $$2doi$$a10.3390/en13082024
000089690 0248_ $$2sideral$$a117822
000089690 037__ $$aART-2020-117822
000089690 041__ $$aeng
000089690 100__ $$0(orcid)0000-0003-0702-733X$$aValero, Antonio$$uUniversidad de Zaragoza
000089690 245__ $$aRelative free energy function and structural theory of thermoeconomics
000089690 260__ $$c2020
000089690 5060_ $$aAccess copy available to the general public$$fUnrestricted
000089690 5203_ $$aThis paper explores the advantages of using relative free energy instead of exergy to build a mathematical theory of thermodynamic costs to diagnose malfunctions in thermal systems. This theory is based on the definition of a linearized characteristic equation that represents the physical behavior of each component. The physical structure of the system described by its energy interrelationships is called “primal”, and its derivatives are the costs and consumptions. The obtained costing structure is the mathematical “dual” of its primal. The theory explains why the F and P cost assessment rules and any other suggestion may (or may not be) rational under a given disaggregation scheme. A result of the theory is a new thermodynamic function, called the relative free energy, and a new parameter called deterioration temperature due to a component''s deterioration cause, characterized by a h-s thermodynamic trajectory describing the effects on the exiting stream. The relative free energy function allows for an exact relationship between the amount of used resources and the increase in entropy generation caused by the deterioration path of the component. This function allows the obtaining of, for the first time, an appropriate characteristic equation for a turbine and a new definition of efficiency that does not depend on the environment temperature but on its deterioration temperature. Also, costing with relative free energy instead of exergy may open a new path for more precise and straightforward assessments of component deteriorations.
000089690 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000089690 590__ $$a3.004$$b2020
000089690 591__ $$aENERGY & FUELS$$b70 / 114 = 0.614$$c2020$$dQ3$$eT2
000089690 592__ $$a0.597$$b2020
000089690 593__ $$aControl and Optimization$$c2020$$dQ2
000089690 593__ $$aElectrical and Electronic Engineering$$c2020$$dQ2
000089690 593__ $$aRenewable Energy, Sustainability and the Environment$$c2020$$dQ2
000089690 593__ $$aEnergy Engineering and Power Technology$$c2020$$dQ2
000089690 593__ $$aFuel Technology$$c2020$$dQ2
000089690 593__ $$aEnergy (miscellaneous)$$c2020$$dQ2
000089690 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000089690 700__ $$0(orcid)0000-0002-6360-1159$$aTorres, César$$uUniversidad de Zaragoza
000089690 7102_ $$15004$$2590$$aUniversidad de Zaragoza$$bDpto. Ingeniería Mecánica$$cÁrea Máquinas y Motores Térmi.
000089690 773__ $$g13, 8 (2020), 2024 [21 pp.]$$pENERGIES$$tEnergies$$x1996-1073
000089690 8564_ $$s310040$$uhttps://zaguan.unizar.es/record/89690/files/texto_completo.pdf$$yVersión publicada
000089690 8564_ $$s517555$$uhttps://zaguan.unizar.es/record/89690/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000089690 909CO $$ooai:zaguan.unizar.es:89690$$particulos$$pdriver
000089690 951__ $$a2021-09-02-09:17:29
000089690 980__ $$aARTICLE