Thin layer solar drying of some vegetables

Yaldiz O., Ertekin C.

DRYING TECHNOLOGY, cilt.19, sa.3-4, ss.583-597, 2001 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 19 Sayı: 3-4
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1081/drt-100103936
  • Dergi Adı: DRYING TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.583-597
  • Anahtar Kelimeler: drying models, moisture ratio, solar air heater, solar cabinet dryer, vegetable drying, PERFORMANCE
  • Akdeniz Üniversitesi Adresli: Evet

Özet

In this study, a solar cabinet dryer consisting of a solar air heater and a drying cabinet, was used in drying experiments. Pumpkin, green pepper, stuffed pepper, green bean, and onion were dried in thin layers. Three different drying air velocities were applied to the process of drying to determine their effects on drying time. Fresh materials were dried by a natural sun drying method. Tn order to explain drying curves of these products different moisture ratio models were performed and evaluated based on their determination coefficients (R-2). Our results revealed that drying air temperature could increase up to about 46 degreesC. Drying air velocity had an important effect on drying process. Drying time changed between 30.29 and 90.43 hours for different vegetables by the solar drying. This drying time was between 48.59 and 121.81 hours for the natural sun drying. Drying curves could be explained by determined thin layer drying models satisfactorily with very high determination coefficients.