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Scaling out energy-efficient pneumatic drying technology in Tanzania

Scaling out energy-efficient pneumatic drying technology in Tanzania

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Scaling out energy-efficient pneumatic drying technology in Tanzania. [Working Paper]

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Abstract

Pneumatic dryers, also known as flash dryers, are commonly used to dry granular material in many industries. In this kind of dryer, wet solid is transported by a hot airstream, reducing its moisture content as it moves. The solid remains inside the dryer for only a few seconds and this allows heat‐sensitive materials to be dried at relatively high temperatures. State‐of‐the‐art industrial pneumatic dryers are used to process cassava in many tropical countries. However, small‐scale pneumatic dryers are not widely available. Pneumatic dryers are simple to construct, but they must be properly dimensioned for the dryer to operate efficiently. The main components of a pneumatic dryer are burner, heat exchanger, fan, feeder, drying duct and cyclone. This document is separated into three sections, the first section describes the dryer, designed, and dimensioned for an output of 295 kilograms per hour of product, at a moisture content level of 12% on a wet basis (wb). The second section describes the computer simulation of the drying process using Discrete Element Method (DEM) coupled with Computational Fluid Dynamics (CFD). The third section describes the performance evaluation of the dryer built in Tanzania.

Item Type: Working Paper
Additional Information: This RTB Working Paper is intended to disseminate research and practices about production and utilization of roots, tubers and bananas and to encourage debate and exchange of ideas. The views expressed in the papers are those of the author and do not necessarily reflect the official position of RTB, CGIAR or the publishing institution.
Uncontrolled Keywords: cassava processing
Subjects: S Agriculture > S Agriculture (General)
T Technology > TJ Mechanical engineering and machinery
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Natural Resources Institute
Faculty of Engineering & Science > Natural Resources Institute > Food & Markets Department
Related URLs:
Last Modified: 08 Feb 2022 13:30
URI: http://gala.gre.ac.uk/id/eprint/35130

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