An experimental study on the drying kinetics of quince

Kaya A., Aydin O., Demirtas C., Akguen M.

DESALINATION, cilt.212, ss.328-343, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 212
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.desal.2006.10.017
  • Dergi Adı: DESALINATION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.328-343
  • Anahtar Kelimeler: convective drying, quince, experimental, drying kinetics, drying rate, effective diffusivity, moisture content, moisture ratio, MOISTURE DIFFUSIVITY, SORPTION, DEHYDRATION
  • Karadeniz Teknik Üniversitesi Adresli: Evet

Özet

In this experimental study, drying kinetics of quince slices was investigated as a function of drying conditions. Experiments were conducted using air temperatures of 35, 45 and 55 degrees C, mean velocities of 0.2, 0.4 and 0.6 m/s and, relative humidity values of 40, 55 and 70%. The experimental moisture data were fitted to some models (namely Henderson and Pabis, Lewis and two-term exponential models) available in the literature, and a good agreement was observed. In the ranges covered, the values of the effective moisture diffusivity, D-eff were obtained between 0.65x10(-10) and 6.92x10(-10) m(2)/s from the Fick's diffusion model. Using D-eff, the value of activation energy (E-a) was determined assuming the Arrhenius-type temperature relationship, which varied from 33.83 to 41.52 kJ/mol. Finally, the sorption isotherms of the dried quince slices were determined.