THE DESIGN AND OPTIMIZATION OF AN INDUSTRIAL DRYER FOR SULTANA RAISINS

被引：37

作者：

VAGENAS, GK

MARINOSKOURIS, D

机构：

[1] Department of Chemical Engineering, National Technical University of Athens, GR-10682, Athens

来源：

DRYING TECHNOLOGY | 1991年 / 9卷 / 02期

关键词：

AIR-RECIRCULATION; DESIGN VARIABLES; MATHEMATICAL MODEL; OPTIMIZATION VARIABLES; THERMAL LOAD;

D O I：

10.1080/07373939108916675

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A mathematical model of a tunnel dryer for sultana grapes is presented and applied for the determination of size and optimal operating conditions of the dryer. The optimum condition is given by the minimization of heat consumption, expressed as the ratio of thermal load to production, with some constraints regarding the production rate of the dryer and the maximum permissible air temperature. The optimization variables are temperature and humidity of the drying air, and product loading thickness on the trays. The optimum condition requires the operation of the dryer on the maximum permissible air humidity, which corresponds to a high degree of recirculation of exhaust air. This can be accomplished using automatic control of fresh air and humid air inlet and exhaust dampers along the length of the dryer, during the entire drying cycle.

引用

页码：439 / 461

页数：23

共 11 条

[1]

Bertin R., Blazquez M., Modeling and optimization of a dryer, Drying Technol., 4, (1986)

[2]

Finlayson B., Non-linear Analysis in Chemical Engineering, (1980)

[3]

Maroulis Z., Tsami E., Marinos-Kouris D., Saravacos G.D., Application of the GAB model to the moisture sorption isotherms for dried fruits, J. Food Eng., 7, (1988)

[4]

Nonhebel M.A., Moss A.A.H., Drying of Solids in the Chemical Industry, (1971)

[5]

Patankar S.V., Numerical Heat Transfer and Fluid Flow, (1980)

[6]

Thygeson J.R., Grossmann E.D., Optimization of a continuous through-circulation dryer, AIChE J., 16, (1970)

[7]

Vagenas G.K., An application of heat and mass transfer principles to the drying of food materials, (1988)

[8]

Vagenas G.K., Marinos-Kouris D., Saravacos G.D., An analysis of mass transfer in air-drying of foodstuffs, Drying Technol., 8, (1990)

[9]

Van Brakel J., Advances in Drying, Mass transfer in convective drying, 1, (1980)

[10]

Van Arsdel W.B., Copley M.J., Food Dehydration, 2, (1963)

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