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

Author(s) : LAURINDO J. B., CARCIOFI B. A. M., SILVA R., et al.

Type of article: Article, IJR article

Summary

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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Pages: pp. 600-606

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Details

  • Original title: On-line monitoring of heat transfer coefficients in a stirred tank from the signatures of the resultant force on a submerged body.
  • Record ID : 2010-0066
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 3
  • Publication date: 2010/05

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