Share

Advanced micro-fin tubes for condensation.

Author(s) : CHAMRA L. M., WEBB R. L.

Type of article: Article

Summary

The new geometries include both single-helix and cross-grooved surfaces. The single-groove geometries have 74-80 internal fins, 0.35-mm fin height, and 30 deg fin included angle. The cross-groove geometries are formed by applying a second set of grooves at the same helix angle, but opposite angular direction as the first set. Data are provided for varying second groove depths with R22. The data show that the heat transfer coefficient increases with the helix angle, up to the maximum 27 deg tested, with 27% higher condensation coefficient than the single-helix tube. The pressure drop is 6% higher than in the single-helix tube.

Details

  • Original title: Advanced micro-fin tubes for condensation.
  • Record ID : 1997-0177
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 39 - n. 9
  • Publication date: 1996/06

Links


See other articles in this issue (5)
See the source

Indexing