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Modeling Asd Optimization of Fluidized Bed and Rotary Dryers

 

作者: C.T. Kiranoudis,   Z.B. Maroulis,   D. Marinos-Kouris,  

 

期刊: Drying Technology  (Taylor Available online 1997)
卷期: Volume 15, issue 3-4  

页码: 735-763

 

ISSN:0737-3937

 

年代: 1997

 

DOI:10.1080/07373939708917260

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Fluidized bed and rotary dryers are two popular types of dryers utilized in almost every area of dryine. In this study, both dryers are analysed regarding their design and operational performance, so that they could be compared in a straightforward way. The mathematical models describing the convective drying process were evaluated for both types of dryers. Design procedures aiming at the determination of optimum sizing and operational characteristics for each type involved were carried out by appropriately optimizing the total annual cost of each structure for a given production capacity. Both dryer types were compared explicitely by evaluating optimum configurations for a wide range of production capacity values. Once the dryer sizing parameters are defined, its operational performance can be evaluated by comparing the optimum operational cost versus production capacity for predefined optimum designed structures. Rotary dryers turn out to be rather expensive compared to fluidized bed dryers, regarding design. On operational grounds, however, it is the other way around, due to the understandably favored heat transfer achieved in rotarv dryers. Characteristic examples covering a wide range of materials - from food products to inorganic minerals -are included in order to demonstrate the performance of each process as well as the effectiveness of the proposed approach.

 

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