A new approach to modelling of single droplet drying

被引：139

作者：

Farid, M ^{[1
]}

机构：

[1] Univ Auckland, Dept Chem & Mat Engn, Auckland, New Zealand

来源：

CHEMICAL ENGINEERING SCIENCE | 2003年 / 58卷 / 13期

关键词：

moving boundary; drying; droplet; modelling; skim milk; silica;

D O I：

10.1016/S0009-2509(03)00161-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A model was developed to predict the change in droplet mass and temperature when it is exposed to hot air, as in spray drying of droplets containing solids. The droplet was assumed first to undergo sensible rapid heating with no mass change. Then the droplet experiences some shrinkage, with no temperature change but rapid mass losses, followed by a period of crust formation with a significant change in droplet mass and temperature and finally a short period of sensible heating of the dried particle. The model, unlike previous models, accounts for shrinkage and for the temperature distribution in the droplet. It provided a good prediction for the change in droplet temperature and mass for some of the experimental measurements available in the literatures. (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：2985 / 2993

页数：9

共 14 条

[1]

Bylund G., 1995, Dairy processing handbook, V5, P13, DOI DOI 10.1533/9781855737075.3.448

[2] Fingerprints of the drying behaviour of particulate or thin layer food materials established using a reaction engineering model [J].

Chen, XD ;

Xie, GZ .

FOOD AND BIOPRODUCTS PROCESSING, 1997, 75 (C4) :213-222

[3]

CHEN XD, 1999, CHEMECA99 NEWC AUST

[4] A RECEDING INTERFACE MODEL FOR THE DRYING OF SLURRY DROPLETS [J].

CHEONG, HW ;

JEFFREYS, GV ;

MUMFORD, CJ .

AICHE JOURNAL, 1986, 32 (08) :1334-1346

[5] The moving boundary problems from melting and freezing to drying and frying of food [J].

Farid, M .

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 2002, 41 (01) :1-10

[6] EFFECT OF NATURAL-CONVECTION ON THE PROCESS OF MELTING AND SOLIDIFICATION OF PARAFFIN WAX [J].

FARID, MM ;

MOHAMED, AK .

CHEMICAL ENGINEERING COMMUNICATIONS, 1987, 57 (1-6) :297-316

[7] The analysis of heat and mass transfer during frying of food using a moving boundary solution procedure [J].

Farid, MM ;

Chen, XD .

HEAT AND MASS TRANSFER, 1998, 34 (01) :69-77

[8] THERMAL PERFORMANCE OF A HEAT-STORAGE MODULE USING PCMS WITH DIFFERENT MELTING TEMPERATURES - MATHEMATICAL-MODELING [J].

FARID, MM ;

KANZAWA, A .

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 1989, 111 (02) :152-157

[9]

LIAPIS AI, 1999, FREEZE DRYING HDB IN, P314

[10]

MILS AF, 1992, HEAT TRANSFER

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