130756 20240131210810.0 doi 10.1016/j.energy.2019.05.077 sideral 112406 ART-2019-112406 eng Sun, Henan Structure optimization and exergy analysis of a two-stage TEC with two different connections 2019 This paper develops three dimensional numerical models of a two-stage series-connected TEC model and a two-stage parallel-connected TEC model. NSGA-II is used to optimize their electric current, height of lower stage and ratio of channel width and thickness of fin in the case of constant thermoelectric material volume. Two objectives, exergy efficiency and irreversibility are considered simultaneously. The optimal values one Pareto front are obtained by three decision making methods, Shannon''s entropy, TOPSIS and LINMAP, while deviation index is a criterion for evaluating three decision making methods. Sensitive analysis has been carried out to investigate the influence of three variables to be optimized. And TEC with and without plate-fin heat exchanger have been compared. The results show that solution selected by LINMAP is the most compromising solution. The parallel connected TEC saves about 50% of the power consumption compared to the series connected TEC under the same temperature difference. Optimal variables are discussed to obtain the most energy efficient solution with optimal configuration and plate-fin heat exchanger. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/UZ/JIUZ-2017-TEC-10 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 6.082 2019 THERMODYNAMICS 3 / 61 = 0.049 2019 Q1 T1 ENERGY & FUELS 20 / 112 = 0.179 2019 Q1 T1 2.166 2019 Electrical and Electronic Engineering 2019 Q1 Energy (miscellaneous) 2019 Q1 Energy Engineering and Power Technology 2019 Q1 Management, Monitoring, Policy and Law 2019 Q1 Civil and Structural Engineering 2019 Q1 Fuel Technology 2019 Q1 Industrial and Manufacturing Engineering 2019 Q1 Building and Construction 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Usón Gil, Sergio Universidad de Zaragoza (orcid)0000-0002-9279-1959 Liu, Wei Liu, Zhichun 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 180 (2019), 175-191 Energy Energy 0360-5442 2926106 http://zaguan.unizar.es/record/130756/files/texto_completo.pdf Postprint 1673914 http://zaguan.unizar.es/record/130756/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:130756 articulos driver 2024-01-31-19:18:17 ARTICLE