2003
DOI: 10.1111/j.1745-4530.2003.tb00597.x
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DRYING of COFFEE BERRIES IN A VIBRATED TRAY DRYER OPERATED WITH SOLIDS RECYCLE and SINGLE‐STAGE1

Abstract: A vibrated tray dryer was tested for drying coffee berries. It consists of a vertical chamber (0.33 m × 0.18 m × 1.30 m) provided with four trays. the trays are supported by a vibrated shaft. Experimental tests were carried out at a vibration amplitude of 1 mm and at a variable frequency. the process itself consisted of feeding the vibrated tray dryer with an initial mass of coffee berries: after leaving the dryer through the discharge channel, the berries were fed again to the top of the dryer by a bucket ele… Show more

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Cited by 9 publications
(7 citation statements)
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“…Neste caso, as partículas, ao vibrarem, modificam a espessura da camada-limite em torno da partícula, aumentando o coeficiente convectivo de transferência de calor. Já no leito fixo, essas influências não acontecem e, como resultado, a taxa de secagem é menor durante toda a secagem (FINZER e KIECKBUSCH, 1992;FINZER et al, 2003).…”
Section: Determinação Da Massa Específica Dos Frutosunclassified
“…Neste caso, as partículas, ao vibrarem, modificam a espessura da camada-limite em torno da partícula, aumentando o coeficiente convectivo de transferência de calor. Já no leito fixo, essas influências não acontecem e, como resultado, a taxa de secagem é menor durante toda a secagem (FINZER e KIECKBUSCH, 1992;FINZER et al, 2003).…”
Section: Determinação Da Massa Específica Dos Frutosunclassified
“…Coffee is harvested in the form of ripe berries and has a MC of more than 60% [ 8 ]. These ripe berries are processed through several steps of (wet or dry) postharvest treatments resulting in green coffee beans.…”
Section: Introductionmentioning
confidence: 99%
“…The vibration provides for a more uniform drying of agglomerated materials and elimination of dead zones in the equipment, resulting in more hygienic operation for food products and a reduction in the risk of microorganism growth (Finzer, Limaverde, Freitas, Limaverde Jú nior, & Sfredo, 2003). 0260 Due to the importance of drying in coffee processing and of vibration in drying, the purpose of this work was to promote the improvement in taste and aroma of beverages prepared from Arabica coffees through controlled drying of coffee cherries with associated vibration.…”
Section: Introductionmentioning
confidence: 99%