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Impact of the feeding system on pneumatic dryers’ energy performance

Impact of the feeding system on pneumatic dryers’ energy performance

Precoppe, Marcelo ORCID: 0000-0002-7937-5782 (2021) Impact of the feeding system on pneumatic dryers’ energy performance. Manual. University of Greenwich, London.

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For the good operation of a pneumatic dryer, solids should be fed to the equipment well dispersed and without the presence of lumps. In addition, the material should be introduced to the drying duct at a rate as uniform as possible. Rotary valve feeders and screw feeders are the most common type of feeding mechanisms used in pneumatic dryers. However, before drying, the grated and dewatered cassava is sticky, and therefore rotary valve feeders cannot be used (Figure 1). As part of RTB’s 2020 activities, two feeding systems for pneumatic drying of cassava were developed. One of the feeders uses a screw mechanism (Figure 2) and the other uses a plough mechanism (Figure 3). Both feeders have hoppers with vertical walls, as for cassava grits, V-shaped hoppers, create bridges and consequently stop the material flow (Figure 4). The screw feeder requires a flow aid-device and a disintegrator, while the plough feeder does not require either, being therefore more affordable equipment. The objective of this working paper is to compare the impact that those two feeders have on the energy performance of pneumatic dryers used for cassava processing.

Item Type: Monograph (Manual)
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; pneumatic dryer; flash dryer
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: 16 Feb 2024 09:29

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