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A novel type of falling film heat and mass exchanger: spirally wound fin tube.

Un nouveau type d'échangeur de chaleur et de matière à film ruisselant : le tube à ailette spiralée.

Author(s) : SCHWARZER B. P., SOETRISNANTO A. S., LE GOFF H., LE GOFF P.

Summary

A novel type of falling film heat and mass exchanger is presented where the working fluid flows as a thin film on a spirally wound fin formed on either the inside or outside wall of a circular base tube heated by a heat carrier fluid flowing on the other side. The hydrodynamics and the heat transfer were studied for two different types of spiral fin heat exchangers: a graphite tube with a spiral fin on the outside and a brass tube with the spiral fin on the inside. The latter is built up of individual discs of which a given section is cut out. The discs are assembled, turning one with respect to the other in order to make a "spiral staircase". These spiral fin tubes were studied with different geometric parameters.

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Pages: 1993-2

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Details

  • Original title: Un nouveau type d'échangeur de chaleur et de matière à film ruisselant : le tube à ailette spiralée.
  • Record ID : 1994-0180
  • Languages: French
  • Source: Energy Efficiency in Refrigeration and Global Warming Impact.
  • Publication date: 1993/05/12
  • Document available for consultation in the library of the IIR headquarters only.

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