Publicado

2010-07-01

NUMERICAL SIMULATION OF THIN LAYER COFFEE DRYING BY CONTROL VOLUMES

Palabras clave:

Coffee, drying, numerical simulation, thin layer. (es)

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Autores/as

  • HÉCTOR J. CIRO-VELÁSQUEZ Department of Agricultural and Food Engineering, UNAL Sede Medellín
  • LUIS C. ABUD-CANO Mechanical Engineer, M.Sc
  • LUIS. R. PÉREZ-ALEGRÍA Department of Agricultural and Biosystems Engineering, University of Puerto Rico-Mayagüez Campus
The thin layer drying model proposed by Sokhansanj and Bruce (1987) was implemented to model the drying process of parchment coffee beans. A computational model based on a control volume approach was developed to simulate the drying process of parchment coffee. A one dimensional transient analysis was implemented in the radial direction applied to a spherical coffee bean of equivalent radius. The results found that, even though the numerical value for the mass transfer coefficient is a small number (about of 10⁷ m/sec), moisture content predictions were sensitive to this value. The predicted drying curve compared favorably with published results.

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