129606 20240104102230.0 doi 10.1016/j.applthermaleng.2019.02.012 sideral 111187 ART-2019-111187 eng Acevedo, L. Local exergy cost analysis of cullet glass heating by microwaves 2019 In this paper, the analysis of the local exergy costs of a cullet glass heated by microwaves in a cubical cavity activated by a susceptor is presented. The analysis is based on a previously validated 3-D electromagnetic model, but goes further by applying the concepts of local exergy efficiency and local unit exergy consumption, what enables a local analysis (in time and space) of the process efficiency. Furthermore, local exergy cost quantifies in detail the path of the exergy cost formation during microwave heating, which is determined by the local irreversibilities taking place in this transient process. Four different susceptor positions have been also compared, in order to find out not only which one is the most efficient but also to justify in detail this result by the time and space evolution of efficiency, unit exergy consumption (both external microwave power and conduction contributions) and unit exergy cost. The best conclusion of the paper is that the local exergy cost approach can contribute to the design of more efficient energy conversion systems, as it could be noted in its application to a complex process like this 3-D example of microwave cullet heating. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.725 2019 ENGINEERING, MECHANICAL 13 / 130 = 0.1 2019 Q1 T1 THERMODYNAMICS 6 / 61 = 0.098 2019 Q1 T1 MECHANICS 13 / 136 = 0.096 2019 Q1 T1 ENERGY & FUELS 34 / 112 = 0.304 2019 Q2 T1 1.78 2019 Industrial and Manufacturing Engineering 2019 Q1 Energy Engineering and Power Technology 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Usón, S. Universidad de Zaragoza (orcid)0000-0002-9279-1959 Uche, J. Universidad de Zaragoza (orcid)0000-0003-4408-6881 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 152 (2019), 778-795 Appl. therm. eng. Applied Thermal Engineering 1359-4311 3303196 http://zaguan.unizar.es/record/129606/files/texto_completo.pdf Postprint 503563 http://zaguan.unizar.es/record/129606/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:129606 articulos driver 2024-01-04-09:04:43 ARTICLE