Optimizing Thermoelectric Generator Efficiency Through Geometric Management

LAHCEN OUHMAD, ABDESSAMAD MALAOUI

Abstract


Cet article explore la relation complexe entre la disposition spatiale des générateurs thermoélectriques et leur efficacité à exploiter l’électricité à partir de la chaleur perdue. En utilisant un modèle numérique 3D complet comprenant 127 thermocouples, nous effectuons une analyse approfondie des mécanismes de transfert de chaleur et de conduction électrique au sein de ces générateurs. Grâce à des simulations numériques, nous explorons des paramètres critiques tels que la tension en circuit ouvert et la puissance de sortie, qui sont ensuite comparés à des données empiriques. Plus précisément, nous étudions l'impact des distances variables entre les générateurs, imposant des contraintes sur les transferts de chaleur par convection. Nos résultats révèlent une amélioration substantielle de la puissance de sortie lorsque la distance entre les générateurs augmente de 2 cm à 30 cm, bien que dans une plage optimale spécifique. Au-delà de cette plage, les gains deviennent marginaux. Notamment, l’analyse de la puissance par unité de surface en fonction de la longueur présente des tendances intrigantes, la puissance augmentant initialement à mesure que la longueur augmente, culminant à 18 cm. Cette étude souligne le rôle central de la distance entre générateurs dans l’optimisation de l’efficacité du générateur thermoélectrique, en soulignant l’importance d’une plage spécifique de distances pour maximiser la puissance de sortie tout en élucidant les limites qui surviennent au-delà de cette plage.

Keywords


Thermoelectric generator; Heat recovery; Distance between generators; System performance; Numerical simulation.

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v14i4.14687.g8959

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