Quality of Soybean Seeds Undergoing Moving Bed Drying: Countercurrent and Crosscurrent Flows

Barrozo, M. A. S.; Felipe, Carlos Alberto Severo; Sartori, D. J. M.; Freire, José Teixeira

doi:10.1080/07373930600611638

Cited by 26 publications

(20 citation statements)

References 14 publications

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“…Sinnecker et al 2005Li et al 2002;Freire et al 2004;Overhults et al 1973), fluidized bed drying (Soponronnarit et al 2001;Osella et al 1997), concurrent sliding moving bed drying (Pfeifer et al 2010;Felipe and Barrozo 2003;Barrozo et al 2006), spouted bed drying (Duarte et al 2004;Wiriyaumpaiwong et al 2003), rotary dryer (Luz et al 2010), near-infrared radiation-fluidized-bed drying (Dondee et al 2011), microwave-hot air drying (Gowen et al 2008). These studies focused mainly the effects of air temperature, relative humidity and initial moisture content on quality of soybean such as urease activity, cracking, breakage, fatty acids, protein and germination.…”

Section: Introductionmentioning

confidence: 99%

Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

2014

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Moisture content of soybean kernel at harvest time is too high for storage, and needs to be reduced. In this research, drying characteristics, quality and energy requirement for microwave-fluidized bed drying of soybean kernels were studied. The results showed that air temperature (80-140°C), velocity (1.8-4.5 m/s) and microwave power (200-500 W) significantly influenced drying time, moisture diffusivity, rehydration capacity, cracking, and specific energy consumption (P≤0.05). Among the applied models, Page's model has the best performance to estimate the microwavefluidized bed drying behavior of the soybean kernels. Moisture diffusivity values increased (6.25×10 −10 to 42.14×10 -10 m 2 /s) as the air velocity decreased and air temperature and microwave power increased. Activation energy was foundto be between 3.33 and 17.70 kJ/mol. Minimum cracking percentage of soybean kernels (12.96 %) was obtained at 80°C, 1.8 m/s and 200 W treatments. The increase in microwave power and decrease in air velocity level decreased the rehydration capacity. Specific energy consumption varied from 50.94 to 338.76 MJ/kg water and the lowest specific energy consumption were obtained at 80°C, 4.5 m/s and 500 W.

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Section: Introductionmentioning

confidence: 99%

Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

2014

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“…Due to compression, two distant points of contacting bodies can approach each other at a distance , called normal overlap, which is defined as follows: (6) In this model, the normal force, F n , is based on the Hertzian contact theory [18] and is a function of the normal overlap ( ) of the effective Young modulus Y * , considering the effective radius R * . Thus, the normal force is given by:…”

Section: The Modelmentioning

confidence: 99%

Repose angle of monoparticles and binary mixture: An experimental and simulation study

et al. 2016

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“…As condições experimentais foram determinadas através de um planejamento composto central (BOX; HUNTER ;HUNTER, 1978). Foram 16 condições operacionais, considerando três repetições no ponto central.…”

Section: Condições Operacionaisunclassified

“…A literatura traz relatos sobre alterações na qualidade das sementes durante a secagem, seja em leitos móveis (FELIPE; BARROZO, 2003;BARROZO et al, 2006;LISBOA et al, 2007) ou em leitos fixos (KRZYZANOWSKI; WEST; FRANÇA NETO, 2006;. Os gradientes de temperatura e umidade ocasionam expansão, contração e alterações na densidade e porosidade durante o processo de secagem, desse modo as sementes sofrem mudanças físicas.…”

Section: Introductionunclassified

Transferência Simultânea De Calor E Massa Entre O Ar E Sementes De Soja Em Leito Fixo

Souza¹,

Miranda²,

Lobato³

et al. 2015

Anais Do XXXVII Congresso Brasileiro De Sistemas Particulados

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RESUMOO objetivo deste trabalho foi realizar um estudo do processo de secagem de sementes de soja em leito fixo, levando em consideração a heterogeneidade da umidade das sementes e temperatura das sementes e do ar neste tipo de secador. Foi realizada a simulação matemática do processo de secagem utilizando o modelo a duas fases. Através dos experimentos de secagem de sementes de soja em leito fixo e camada espessa, foi possível determinar a umidade das sementes e as temperaturas das sementes e do ar de secagem ao longo do leito, em diferentes posições axiais no decorrer do tempo. Foi constatada a heterogeneidade desse procedimento, neste tipo de secador. Com relação a modelagem, as respostas simuladas comparadas com os valores experimentais mostraram uma boa concordância, com desvios médios de 1,4 a 5,7%.

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Quality of Soybean Seeds Undergoing Moving Bed Drying: Countercurrent and Crosscurrent Flows

Cited by 26 publications

References 14 publications

Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

Effects of microwave - fluidized bed drying on quality, energy consumption and drying kinetics of soybean kernels

Repose angle of monoparticles and binary mixture: An experimental and simulation study

Transferência Simultânea De Calor E Massa Entre O Ar E Sementes De Soja Em Leito Fixo

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