Encontro de Energia no Meio Rural

Abstract

GRECO, Marcelo, CAMPOS, Alessandro Torres, MOLIN, Roberto Natal Dal et al. Study of the energy efficiency of coffee drying with different revolving combinations time. In Procedings of the 5th Encontro de Energia no Meio Rural, 2004, Campinas (SP) [online]. 2004 [cited 15 October 2024]. Available from: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022004000100057&lng=en&nrm=iso> .

This work objectified to evaluate the energy efficiency in the coffee (Coffea arábica L.) drying with different combinations of revolving time in a fixed bed dryer. The experiment was developed the months of June and July of 2003, in a farm located in the municipal district of Jesuítuas-Paraná State, Brazil. The product quality evaluations were accomplished in the Consolata Agricultural Cooperative Ltda (COPACOL). The grains parameters were evaluated at the Seeds Technology Laboratory, at the UNIOESTE Campus Marechal Cândido Rondon. A fixed bed model dryer was used, with a metallic drying chamber, of cylindrical format, with an adapted grain revolving system, keeping the air temperature at 75ºC. It was observed that the energy consumed for burning the fuel (wood) overcame the electric energy consumed by the motors. The air relative humidity and temperature exercised influence in the drying time. The combination that provided larger energy efficiency was the continuous ventilation drying, with revolving times of 40 minutes each 2 hours.

Keywords : Secador de grãos; energia; eficiência energética; café.