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Acta Scientiarum. Agronomy

versão On-line ISSN 1807-8621

Resumo

GRECO, Marcelo; CAMPOS, Alessandro Torres  e  KLOSOWSKI, Elcio Silvério. Evaluation of different revolving time in a fixed bed-coffee drier. Acta Sci., Agron. (Online) [online]. 2010, vol.32, n.4, pp.577-583. ISSN 1807-8621.  https://doi.org/10.4025/actasciagron.v32i4.3670.

This study aimed to evaluate the energetic efficiency in coffee drying (Coffee arabica L.) with different combinations of revolving time in a fixed-bed coffee dryer. The experiment was conducted in July 2004 in Jesuítas - Paraná state/Brazil. The dryer featured a mechanic system with rotating blades to revolve of the product at different intervals. The drying air temperature was 75ºC ± 5ºC. The ventilation and drying was kept constant during the tests. It was observed that the average energy efficiency was 12.3 MJ kg-1 and there was no significant difference between the treatments. For the adopted dryer model, the revolving system is recommended with three-hour intervals and continuous drying.

Palavras-chave : coffee processing; energy; efficiency; drying.

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