Modelling and simulation of a continuous fluidized-bed dryer

Lai, F. S.; Chen, Yiming; Fan, L.T.

doi:10.1016/0009-2509(86)85092-8

Cited by 43 publications

(37 citation statements)

References 4 publications

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“…2a and b illustrates the time variation of particle moisture content and temperature for various superficial gas velocity u in , respectively. The results present, the prediction of the Lai and Chen model [8] for the moisture content of the particle is less than the present model (Fig. 2a) and the temperature of solid particle is higher (Fig.…”

Section: ) Solution and Discussioncontrasting

confidence: 64%

“…In addition, this model predicts profiles of these variables with time. It will be shown that the predictions of this model are more reliable compared to those obtained by Lai and Chen [8].…”

Section: Interface Of Particle and Gas Phasementioning

confidence: 78%

“…To validate the numerical solution, the results of the model has been compared with that of Lai and Chen [8]. Fig.…”

Section: ) Solution and Discussionmentioning

confidence: 99%

“…The emulsion phase remains at the minimum fluidization condition while the excess flow of fluidizing fluid passes through the bed as bubbles. An improvement in Palancz's model [7] has been done by Lai and Chen [8] with the following simplification assumptions:…”

Section: ) Introductionmentioning

confidence: 99%

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Mathematical modeling of a continuous fluidized bed dryer

Garnavi

Kasiri

Hashemabadi

2006

International Communications in Heat and Mass Transfer

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Section: ) Solution and Discussioncontrasting

confidence: 64%

Section: Interface Of Particle and Gas Phasementioning

confidence: 78%

“…To validate the numerical solution, the results of the model has been compared with that of Lai and Chen [8]. Fig.…”

Section: ) Solution and Discussionmentioning

confidence: 99%

Section: ) Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mathematical modeling of a continuous fluidized bed dryer

Garnavi

Kasiri

Hashemabadi

2006

International Communications in Heat and Mass Transfer

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“…Literatürde [5] , Izadifar ve Mowla [6], Assari vd. [7]; Fyhr ve Kemp [8]; Lai ve Chen [9]; Madhiyanon vd. [10]; Palancz [11]; Srinivasakannan ve Balasubramanian [12] ve Zare ve Chen [13] çeltik; Geng vd.…”

Section: Gi̇ri̇ş (Introduction)mentioning

confidence: 99%

Akişkan Yatakli Kurutucuda Zencefi̇li̇n Kuruma Ki̇neti̇ği̇ni̇n İncelenmesi̇

Parlak¹

2014

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETBu çalışmada zencefilin akışkan yataklı kurutucuda kuruma kinetiği incelenmiştir. Yaş baza göre başlangıç nemi %88-89 olan zencefil kökleri, 2 mm kalınlığında dilimlenmiş ve % 4-5 nem içeriğine kadar kurutulmuştur. Kurutma havasının sıcaklığı, hızı ve bağıl neminin kuruma kinetiğine olan etkisini incelemek üzere, deneyler farklı kurutma havası (40, 50, 60 °C) sıcaklıklarında ve farklı (3 ve 4 m/s) hava hızlarında gerçekleştirilmiştir. Kurutma esnasında belli zaman aralıklarında alınan numunelerin kuru baza göre nem değerleri ölçülmüş ve daha sonra belirlenen nem oranları kullanılarak difüzyon katsayıları hesaplanmıştır. Elde edilen deneysel sonuçlar, kurutma havası sıcaklığının, hızının ve neminin kuruma hızında oldukça etkili bir parametre olduğunu göstermiştir. Ayrıca deneysel veriler literatürde var olan ince tabaka kuruma kinetiği modelleri ile karşılaştırılmış, verilerin Page modeli ile uyumlu olduğu görülmüştür.Anahtar kelimeler: Kurutma, akışkan yataklı kurutucu, zencefil INVESTIGATION OF DRYING KINETICS OF GINGER IN A FLUIDIZED BED DRYER ABSTRACTIn the study, drying kinetics of ginger in a fluidized bed dryer are investigated. Ginger roots are sliced with thickness of 2 mm and dried from initial moisture content of 88-89% (w.b.) to the final moisture content of 4-5% (w.b.). Experiments are carried out with three different drying air temperatures of 40, 50,band 60°C by keeping the air velocity fixed at different values (3 and 4 m/s) to investigate temperature, humidity and velocity of drying gas (air). The moisture content of the samples on dry basis is measured at predetermined time intervals and then overall moisture diffusivities are calculated using the moisture ratios. Experimental results show that temperature, humidity and velocity of air are important parameters have an effect on drying rate of sliced ginger in fluidized bed dryer. In addition, experimental moisture loss data has been compared with thin layer drying models available in the literature and Page model has shown a better fit to the experimental data.

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Mathematical Model for Batch Drying in an Inert Medium Fluidized Bed

Lee¹,

Kim²

1999

Chem. Eng. Technol.

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A modified three-phase model is proposed for batch drying of fine powders in an inert medium fluidized bed. The overall heat and mass transfer coefficients between the interstitial gas and solid phases have been determined by the proposed surfacestripping model in which the Biot number is a governing parameter. The effects of gas velocity, inlet gas temperature and mass ratio of starch to inert particles on the drying characteristics of starch in a 0.083 m ID´0.80 m high medium fluidized bed have been determined. Based on the proposed model, the internal resistance of mass transfer at the powder is equal to the external resistance. The model predicts well the bed temperature, humidity of outlet gas, moisture content of solid particles, heat and mass transfer in an inert medium fluidized bed.

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Modelling and simulation of a continuous fluidized-bed dryer

Cited by 43 publications

References 4 publications

Mathematical modeling of a continuous fluidized bed dryer

Mathematical modeling of a continuous fluidized bed dryer

Akişkan Yatakli Kurutucuda Zencefi̇li̇n Kuruma Ki̇neti̇ği̇ni̇n İncelenmesi̇

Mathematical Model for Batch Drying in an Inert Medium Fluidized Bed

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