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Modelling of Fluidized-bed Drying of Black Tea

✍ Scribed by S.J. Temple; A.J.B. van Boxtel

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 224 KB
Volume: 74
Category: Article
ISSN: 0021-8634
DOI: 10.1006/jaer.1999.0454

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✦ Synopsis

Notation a air mass #ow, kg/s A air mass, kg c , c constants C N speci"c heat, kJ/kg K h enthalpy #ow, kJ/s H total enthalpy, kJ H T latent heat of evaporation, kJ/kg J evaporation rate, kg H O/kg dm s k drying rate constant, s\ ¸bed depth, m m #ow rate of dry matter, kg/s M dry matter mass, kg ¹ temperature, 3C t time, s u super"cial air velocity, m/s w water, mass #ow rate, kg/s = water, mass, kg X moisture content, decimal d.b. (kg water/kg dry matter) z @ bed area, m density, kg/m Subscripts a air b bed d dhool e equilibrium h weir i in m dry matter o output w water

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