THEORETICAL AND EXPERIMENTAL HEAT AND MASS TRANSFER ANALYSIS FOR A FALLING FILM OUTSIDE A GROOVED TUBE

Onan C., Özkan D. B.

EXPERIMENTAL HEAT TRANSFER, vol.29, pp.244-265, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29
  • Publication Date: 2016
  • Doi Number: 10.1080/08916152.2014.973979
  • Journal Name: EXPERIMENTAL HEAT TRANSFER
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.244-265
  • Yıldız Technical University Affiliated: Yes

Abstract

The heat and mass transfer from a grooved tube is investigated experimentally for a falling-film flow. The experiments are conducted on a helical trapezoidal grooved tube at three temperatures of the feeding water: 30 degrees C, 35 degrees C, and 40 degrees C. The Reynolds number (Re) of the air ranges between 1,500 and 3,500. Nusselt number (Nu) is expressed as a function of the Prandtl number (Pr), Re for air (Re-a), Re for water (Re-w); Sherwood number (Sh) is expressed as a function of the Schmidt number (Sc), Re-a, and Re-w, and the correlation coefficients are determined.