Resumo

CIRO-VELASQUEZ, HÉCTOR J.; ABUD-CANO, LUIS C.  e  PEREZ-ALEGRIA, LUIS. R.. NUMERICAL SIMULATION OF THIN LAYER COFFEE DRYING BY CONTROL VOLUMES. Dyna rev.fac.nac.minas [online]. 2010, vol.77, n.163, pp.270-278. ISSN 0012-7353.

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 10^-7 m/sec), moisture content predictions were sensitive to this value. The predicted drying curve compared favorably with published results.

Palavras-chave : Coffee; drying; numerical simulation; thin layer.

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