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Suivi en ligne des coefficients de transfert de chaleur dans un bac sous agitation grâce aux forces agissant sur un objet submergé.

On-line monitoring of heat transfer coefficients in a stirred tank from the signatures of the resultant force on a submerged body.

Auteurs : LAURINDO J. B., CARCIOFI B. A. M., SILVA R., et al.

Type d'article : Article, Article de la RIF

Résumé

A new procedure for on-line monitoring of heat transfer coefficients (h) during immersion cooling is presented. The signature of the resultant force acting on a sphere connected to a load cell by a rigid rod and immersed in a stirred tank was used as an indirect measurement of h. Temperature evolutions over time of the sphere initially at 40°C, immersed in water at 1°C, were used to determine h at different positions in a tank. The standard deviation of the resultant force was used as a measurement of force oscillations (force signature). The results indicated that it is possible to estimate h between sphere and water from the force signature. For a given spatial positions in the tank, a transfer function with correlation coefficients up to 0.98 was observed when a logarithm function was used to correlate h with sd of the normalized resultant force on the sphere.

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Format PDF

Pages : pp. 600-606

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    20 €

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    Gratuit

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Détails

  • Titre original : On-line monitoring of heat transfer coefficients in a stirred tank from the signatures of the resultant force on a submerged body.
  • Identifiant de la fiche : 2010-0066
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 3
  • Date d'édition : 05/2010

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