Research Article Open Access

Mathematical Modeling of Drying Characteristics of Chilies in a Rotating Fluidized Bed Technique

Kittichai Triratanasirichai1, Watcharin Dongbang2 and Worachest Pirompugd2
  • 1 Department of Mechanical Engineering, Khon Kaen University, 123 Mittraparb Road, Muang, Khon Kaen 40002, Thailand
  • 2 Department of Mechanical Engineering, Burapha University, 169 Long-Hard Bangsaen Road, Muang, Chonburi 20131, Thailand

Abstract

Problem statements: The present study investigates experimentally the thin layer drying of chilies in the Rotating Fluidized Bed (RFB) technique and its mathematical modeling. Approach: The layer’s height was fixed at 4±0.5 cm. In addition, the drying air velocity and the centrifugal acceleration ratio were fixed at 2 m sec-1 and G = 2.5 (106 rpm), respectively. With 6 data sets for drying air temperature between 70 and 120°C, the samples were dried from 350±5%db down to 10±1%db. Results: The drying time was in the range of 69-257 min. The chilies from sunlight appear light red. On the other hand, from the RFB, they appear dark red but can be marketable. Conclusion: The comparisons of five outstanding models are predicted. The Modified Page model gives good agreement with prediction of change in moisture ratio.

American Journal of Applied Sciences
Volume 8 No. 10, 2011, 979-983

DOI: https://doi.org/10.3844/ajassp.2011.979.983

Submitted On: 2 August 2011 Published On: 20 August 2011

How to Cite: Triratanasirichai, K., Dongbang, W. & Pirompugd, W. (2011). Mathematical Modeling of Drying Characteristics of Chilies in a Rotating Fluidized Bed Technique. American Journal of Applied Sciences, 8(10), 979-983. https://doi.org/10.3844/ajassp.2011.979.983

  • 2,978 Views
  • 2,532 Downloads
  • 1 Citations

Download

Keywords

  • Rotating fluidized bed
  • drying kinetics
  • chilies
  • drying models