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Pneumatic drying of cassava starch: Numerical analysis and guidelines for the design of efficient small-scale dryers

Pneumatic drying of cassava starch: Numerical analysis and guidelines for the design of efficient small-scale dryers

Chapuis, A., Precoppe, M., Méot, J. M., Sriroth, K. and Tran, T. (2016) Pneumatic drying of cassava starch: Numerical analysis and guidelines for the design of efficient small-scale dryers. Drying Technology, 35 (4). pp. 393-408. ISSN 0737-3937 (Print), 1532-2300 (Online) (doi:10.1080/07373937.2016.1177537)

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Abstract

In a number of tropical countries, the expansion of cassava processing is tied to the development of small-scale, energy-efficient pneumatic dryers used to dry flour and starch. To facilitate this development, in this study a model of the pneumatic drying of starch particles was developed, to be fitted to measurements taken from large cassava processing factories. After that, numerical simulations were performed to analyze the effects of geometry and operating conditions on the energy efficiency and pipe length required to dry the product. The results clarified the influence of processing capacity, air inlet conditions, and starch particle size, emphasizing that air velocity as well as the dilution of the starch should be minimized. In light of the findings described here, we offer guidelines for the design of efficient small-capacity flash dryers.

Item Type: Article
Uncontrolled Keywords: Cassava starch, Design guidelines, Energy efficiency, Modeling, Pneumatic dryer
Subjects: S Agriculture > S Agriculture (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Natural Resources Institute
Faculty of Engineering & Science > Natural Resources Institute > Food & Markets Department
Faculty of Engineering & Science > Natural Resources Institute > Food Systems Research Group
Last Modified: 30 Apr 2018 15:01
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: GREAT a
URI: http://gala.gre.ac.uk/id/eprint/17207

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