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DETERMINATION OF SHELL-SIDE HEAT TRANSFER COEFFICIENTS BY THE NAPHTHALENE SUBLIMATION TECHNIQUE.

Author(s) : PEREZ J. A., SPARROW E. M.

Type of article: Article

Summary

SHELL-SIDE HEAT TRANSFER COEFFICIENTS FOR A SHELL AND TUBE HEAT EXCHANGER WERE DETERMINED FROM MASS TRANSFER MEASUREMENTS, USING THE NAPHTHALENE SUBLIMATION TECHNIQUE. THE EXTERNAL SURFACE OF THE TUBES IS COATED WITH A FILM OF NAPHTHALENE, WHICH SUBLIMES WHEN EXPOSED TO AN AIR FLOW. MASS TRANSFER COEFFICIENTS WERE MEASURED FOR FULLY DEVELOPED FLOW CONDITIONS AT EACH OF THE TUBES IN THE CROSS SECTION AND WERE TRANSFORMED TO HEAT TRANSFER COEFFICIENTS BY EMPLOYING THE ANALOGY. DETAILED PRESSURE DROP MEASUREMENTS WERE MADE INTERNAL TO THE HEAT EXCHANGER. THE CROSS-SECTIONALLY AVERAGED MASS (HEAT) TRANSFER COEFFICIENTS AND THE PRESSURE DROP WERE COMPARED WITH THE PREDICTIONS FROM TWO WELL-ESTABLISHEDMETHODS FOR THE THERMAL-HYDRAULIC DESIGN OF SHELL AND TUBE HEAT EXCHANGERS.

Details

  • Original title: DETERMINATION OF SHELL-SIDE HEAT TRANSFER COEFFICIENTS BY THE NAPHTHALENE SUBLIMATION TECHNIQUE.
  • Record ID : 1986-0527
  • Languages: English
  • Source: Heat Transf. Eng. - vol. 6 - n. 2
  • Publication date: 1985
  • Document available for consultation in the library of the IIR headquarters only.

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