Optimization of sorting efficiency of size grading machine using oscillating sieve with swing along width direction

Grading according to the sizes is an important value adding technique for Robusta green coffee bean. Mechanical grading can increase the sorting efficiency and the need for workers is decreased. Therefore, the sorting efficiency of size grading machine was optimized based on inclined angle and oscil...

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Bibliographic Details
Published inMATEC Web of Conferences Vol. 293; p. 4003
Main Authors Chungcharoen, Thatchapol, Limmun, Warunee, Chanpaka, Watcharapong, Srisang, Naruebodee
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 2019
Subjects
Correlation coefficients
Design optimization
Efficiency
Grading machines
Response surface methodology
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Summary:Grading according to the sizes is an important value adding technique for Robusta green coffee bean. Mechanical grading can increase the sorting efficiency and the need for workers is decreased. Therefore, the sorting efficiency of size grading machine was optimized based on inclined angle and oscillating speed. The Response Surface Methodology (RSM) combined with central composite design (CCD) was applied in the optimization of the sorting efficiency of the machine. A quadratic model was suggested for the sorting efficiency of size grading machine. The results showed that the optimum operating parameters for size grading machine using oscillating sieve with swing along width direction were inclined angle of 5.06 degree and oscillating speed of 183.28 rpm with a sorting efficiency of 79.99%. The high correlation coefficient (R 2 = 0.9676) indicated that the data predicted using RSM were in good agreement with the experimental results.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/201929304003