Influence of design and operating parameters on separating the coarse wheat bran by cyclone [electronic resource].
Language: English Summary language: Arabic Description: p. 185-212Other title:- العوامل التصميمية والتشغيلية المثلى المؤثرة على عملية فصل ردة القمح الخشنة باستخدام السيكلون [Added title page title]
- Misr journal of agricultural engineering, 2020 v.37 (2) [electronic resource].
| Item type | Current library | Call number | Status | Date due | Barcode | |
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Main | ART MJAE V37 NO2 2 (Browse shelf(Opens below)) | Available |
Includes bibliographic reference.
Experimental study and predicted models were used to investigate the effect of cyclone geometry and operating parameters
such as cone height (30, 50 and 70 cm), vortex finder length (0, 10, 20, 30 and 40 cm), dipleg length (25, 40 and 55 cm)
and inlet air velocity (14, 16, 18 and 20 m/s) on separating the coarse wheat bran from air stream. The performance parameters
via cut-off diameter (d50), overall collection efficiency (?o) and pressure drop (?P) were evaluated to determine the appropriate
design of the cyclone under local operating conditions. The results showed that, ?P increased with the increase of inlet air velocity
and cone height. The optimum operating and design parameters at cone height of 70 cm were inlet air velocity 14 m/s and vortex finder
length 40 cm, which lead to high ?o 99.93 % and low ?P 80.63 Pa. While at cone height of 50 cm, the optimum operating and design parameters
were: inlet air velocity 18 m/s under vortex finder length 40 cm which lead to high ?o 99.97 % and low ?P 121.52 Pa. whereas the cone height
30 cm and vortex finder length zero cm were undesirable because they have low ?o. The d50 decreased with increase inlet air velocity
and lead to increase ?o; for instance at cone height of 30 cm the d50 of Lapple model were 31.95, 29.88, 28.17 and 26.73 ?m for coarse
wheat bran at inlet air velocity 14, 16, 18 and 20 m/s, respectively. Moreover the statistical indicators presented that the
Hoffmann & Stein model was the best model and more validation to predict coarse wheat bran ?o at cone height 30 and 50 cm.
The Lapple model was the best model and more validation to predict coarse wheat bran ?o at cone height 70 cm. There is a wide
range of the optimum ?o depend on the design, operating parameters and the price of the separated material and this is subject
to the operator's decision; in other words balancing operating economics cost and the price of the separated material.
Summary in Arabic.
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