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Une nouvelle analyse et des développements dans les échangeurs de chaleur: Échangeurs de chaleur

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Description

Dans le présent travail, des investigations expérimentales et de simulation ont été menées pour étudier le transfert de chaleur, les caractéristiques du facteur de friction d'un conduit carré uni et torsadé, avec et sans inserts. Les expériences sont réalisées pour le débit d'air à travers le conduit testé équipé d'inserts pour un nombre de Reynolds variant de 8000 à 40 000. Afin de réduire la perte de charge et d'améliorer le transfert de chaleur, le conduit carré torsadé est nouvellement introduit sans que des recherches précédentes soient disponibles. Le travail d'investigation a été effectué et l'expérimentation est entièrement basée sur la conception d'expériences pour obtenir le taux de transfert de chaleur optimal et une chute de pression moindre. Par conséquent, les différents paramètres du processus étudiés sont : la température, la vitesse, le débit massique, la géométrie du conduit et la forme des inserts. Les paramètres pertinents des éléments de conduits testés sont les inserts circulaires, les conduits carrés tordus avec un rapport de torsion de 6,12. Les influences de ces paramètres sur le transfert de chaleur et la perte d'énergie due à la friction sont étudiées en termes de nombre de Nusselt et de facteur de friction. Il semble que le conduit carré torsadé ait plus de potentiel en termes de transfert de chaleur en raison de la turbulence plus élevée et de la forme torsadée.

Product Specifications

Format
paperback
Domain
Amazon UK
Release Date
27 September 2021
Listed Since
28 September 2021

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