scholarly journals Design and Performance Evaluation of a Cherry Tomato Calyx Remover

2021 ◽  
Vol 11 (22) ◽  
pp. 11016
Author(s):  
Yeongsu Kim ◽  
Seokho Kang ◽  
Hyunggyu Park ◽  
Seungmin Woo ◽  
Daniel Dooyum Uyeh ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Optimal Design ◽  
Removal Rate ◽  
Performance Tests ◽  
Cherry Tomato ◽  
Design Factor ◽  
Tomato Variety ◽  
Damage Rate ◽  
And Performance

A prototype for the remover of cherry tomato calyxes was designed and manufactured. The tap remover was designed and manufactured considering the conveyor transport speed, brush length and clearance, and diameter. These were adjusted in three levels to determine the optimal design factor. Performance tests were conducted using Icon 513, a circular-shaped cherry tomato variety, and Minimaru, a jujube-shaped cherry tomato variety. Conveyor transport speeds were set at 210, 280, and 350 mm/s; brush lengths at 70, 80, and 90 mm; brush clearances at 20, 22, and 24 mm; and brush diameters at 0.8, 1.0, and 1.2 mm. The two varieties showed a similar damage rate during calyx removal. However, Minimaru showed a higher calyx removal rate than Icon 513, indicating that it is most suitable for the calyx removal mechanization process.

Optimal design and performance evaluation of a metal fiber filter for capturing radioactive aerosols

2015 ◽  
Vol 34 (3) ◽  
pp. 359-365 ◽  
Author(s):  
Minchan Park ◽  
Seunguk Lee ◽  
Jongwon Kim ◽  
Byunghyun Lee ◽  
Jaekeun Lee ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Optimal Design ◽  
Metal Fiber ◽  
Radioactive Aerosols ◽  
And Performance ◽  
Fiber Filter

scholarly journals Performance Testing and Evaluation of Drum-Type Stem-Separation Device for Pepper Harvester

2021 ◽  
Vol 11 (19) ◽  
pp. 9225
Author(s):  
Seo-Yong Shin ◽  
Myoung-Ho Kim ◽  
Yongjin Cho ◽  
Dae-Cheol Kim
Keyword(s):  
Rotational Speed ◽  
Separation Efficiency ◽  
Performance Testing ◽  
Performance Tests ◽  
Separation Device ◽  
Damage Rate ◽  
Separation Capacity ◽  
And Performance ◽  
Separation Devices ◽  
Additional Labor

The chili pepper harvester has shown potential problems of low pepper stem separation and a high pepper damage rate. The low pepper stem separation has required additional labor, which consists of separating the pepper and stem after pepper harvesting. To improve the stem separation and sorting function of pepper harvesters, three-shaft and four-shaft drum-type stem-separation devices were manufactured, and performance tests were conducted to assess these devices. In an attempt to reduce the damage rate, a brush was used as the teeth in the drum-type stem-separation device. In the factor test, the rotational speeds of shaft 1(A), shaft 2(B), shaft 3(C), and the conveyor for the three-shaft drum were 0.9, 2.7, 1.3, and 0.5 m/s, respectively. The rotational speed of the four-shaft drum was the same as that of the three-shaft drum except for shaft 4(D), and the rotational speed of this additional D was set to 1.3 m/s, which was the same as that of C. In the non-moving status during the non-picking operation of the pepper harvester, the average stem-separation efficiency (SSE) of the four-shaft drum increased by 1.2%, the average pepper with twig rate (PTR) decreased by 5.9%, and the average damage rate (DR) increased by 3.7% compared to the three-shaft drum. In the moving status during the picking operation of the pepper harvester, the SSE of the four-shaft drum increased by 3.6%, the PTR decreased by 9.1%, and the DR increased by 3.8% compared to the three-shaft drum, so an improvement in the pepper stem-separation capacity was observed.

Development and performance evaluation of dehusked coconut grading machine

2021 ◽  
Author(s):  
A. Asha Monicka ◽  
T. Pandiarajan ◽  
S. Ganapathy
Keyword(s):  
Performance Evaluation ◽  
Inclination Angle ◽  
Gravitational Force ◽  
Tangential Force ◽  
Performance Tests ◽  
Belt Conveyor ◽  
Significance Level ◽  
Belt Speed ◽  
And Performance

AbstractThe objective of this research is to develop a dehusked coconut grading machine for coconut cultivators and entrepreneurs. The basis of design is characterized by a tapered belt conveyor and sizing board with openings of increasing aperture which run along the edge of the belt conveyor. Dehusked coconuts are fed onto the tapered belt conveyor where the gravitational force pushes the nut towards the edge until it comes in contact with sizing board. Due to the tangential force, the nut reels along the sizing board, where dehusked coconuts are graded and allowed to fall through aperture according to their sizes. Performance tests indicated that the inclination angle and velocity of the belt significantly affected contamination ratio, grading efficiency and capacity at 5% significance level. The most efficient configuration for fully husked coconut and semi husked was a belt speed of 1.3 m/s with the inclination angle of 15° and belt speed of 1.5 m/s with the inclination angle of 15° respectively. The machine is acceptable by coconut growers and entrepreneurs.

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