Encontro de Energia no Meio Rural

Abstract

CAMPOS, Alessandro Torres, MELO, Evandro de Castro and SILVA, Juarez de Sousa e. Energetic analysis of a wood fired grain drier. 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=MSC0000000022004000100014&lng=en&nrm=iso> .

Aiming at the attendance of a small and medium size group of producers a four chambers fixed-bed dryer prototype with a mechanical revolving system was designed, constructed and energy performance tested. During drying for the prototype test, using coffee the revolving operation proceeded in two chambers which were connected to the dryer plenum at different positions and at a regular three-hours intervals; the other chambers remained static. The dryer operated at a drying-air temperature of 43ºC and an air-flow of 21 m³ min^-1 m^{-2. In the realized test the product moisture content was reduced from 43.1 to 12.7% w.b. over a 42-hours period. The specific energy consumption was 12.752 kJ per kilogram of evaporated water. The obtained results showed that chamber 1 which was submitted to the revolving operation presented the best work conditions due to your plenum connection position.}

Keywords : Secador de grãos; energia; eficiência energética; construções rurais; sustentabilidade.