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

Onan C., Özkan D. B.

EXPERIMENTAL HEAT TRANSFER, cilt.29, ss.244-265, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1080/08916152.2014.973979
  • Dergi Adı: EXPERIMENTAL HEAT TRANSFER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.244-265
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

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.