Development and Valuation of an On-Farm Fluidized Bed Drying System
Description: An on-farm farm fluidized bed dryer was developed and constructed in the Rice Research and Extension Center, Stuttgart, AR, USA. The fluidized bed was used to dry wheat from an initial moisture content of 22% w. b. The effects of the bed depth (15, 30 and 45 cm), air temperature (25, 40 and 55 oC) and drying time (10, 20 and 30 minutes) on the wheat moisture content, the drying rate and the dynamic bed height were investigated. The lowest wheat moisture content was observed at lowest bed height, the highest air temperature and the longest drying time. Conversely, the highest wheat moisture content was observed at highest bed height, the lowest air temperature and the shortest drying time. A finite difference model was developed to describe the fluidized bed drying process and to solve the partial differential equations of mass and heat transfer describing the fluidized bed drying phenomenon. The experimental and the model results will be presented in this paper. Although, the developed fluidized bed dryer is a lab-scale system, the experimental results gave an exceptional indication to scale up the dryer to dry coarse particles as well as crop grains on the farm.
Keywords: Wheat drying; fluidized bed; drying rate; Moisture content.
Conference name: CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Session name: Poster Session (Regular)
Citation: . 2016. Development and Valuation of an On-Farm Fluidized Bed Drying System. CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering