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Effects of gull-wing baffles on the performance of a single-row, annularly finned tube heat exchanger.

Author(s) : KEARNEY S. P., JACOBI A. M.

Type of article: Article

Summary

These effects were quantified for Reynold's numbers from 5000 to 13,000. A novel adaptation of the naphthalene sublimation technique provides optically measured sublimation depths that are used to determine local mass-transfer coefficients with a spatial resolution superior to those reported previously. The data indicate that the unbaffled geometry provides nearly the same heat transfer as the baffled arrangement, but the unbaffled geometry incurs only 20 to 25% of the baffled pressure drop in the range of Reynold's numbers studied. The use of baffles as a heat-transfer enhancement method should be restricted to very low Reynold's numbers or to applications where pressure drop is not a factor.

Details

  • Original title: Effects of gull-wing baffles on the performance of a single-row, annularly finned tube heat exchanger.
  • Record ID : 1996-3352
  • Languages: English
  • Source: HVAC&R Research - vol. 1 - n. 4
  • Publication date: 1995/10
  • Document available for consultation in the library of the IIR headquarters only.

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