Jitter Investigation and Performance Evaluation of a Small-Scale Probe Storage Device Prototype

2007 ◽  
Author(s):  
Abu Sebastian ◽  
Angeliki Pantazi ◽  
Haralampos Pozidis
Keyword(s):  
Performance Evaluation ◽  
Storage Device ◽  
Small Scale ◽  
And Performance

scholarly journals Development and Performance Evaluation of a Small-scale Maize Harvester for Developing Countries

2020 ◽  
pp. 144-156
Author(s):  
Julus H. Vodounnou ◽  
Emmanuel A. Ajav ◽  
Gontrand C. Bagan ◽  
Victorin K. Chegnimonhan
Keyword(s):  
Developing Countries ◽  
Performance Evaluation ◽  
Engine Speed ◽  
Small Scale ◽  
Drive Power ◽  
Smallholder Farms ◽  
Testing Experiment ◽  
And Performance ◽  
A Chain ◽  
Chain Conveyor

A small-scale maize harvester was designed and fabricated for developing countries and is composed of a harvester header, a chain conveyor, a drive power unit and a five-wheel tricycle. Fabrication of components was made and assembling of the devices on the tricycle was done. The performance evaluation of the small-scale maize harvester was done at 15% kernels moisture content (wet basis). Three rotational speeds of the engine, 1347, 1521 and 1937 rpm were used, while the forward velocity of the harvester was kept at an average of 0.617 km.hr-1. The testing experiment revealed significant effect of physical properties of maize (p<0,05). The highest machine capacity was obtained at 0.05 ha.hr-1, while the highest driving efficiency was 97.30% and the highest picking and conveying efficiencies were 84.11% and 98.21%, respectively. However, it was observed that the machine noise level decreased with increase in engine speed. Also, the engine speed affected both picking and conveying efficiencies. The designed machine is found suitable for most smallholder farms.

Fabrication and Performance Evaluation of Cowpea Thresher for Small Scale Cowpea Farm Holders in Nigeria

2018 ◽  
Vol 31 (6) ◽  
pp. 1-11
Author(s):  
O. W. Muhammed-Bashir ◽  
K. O. Oriola ◽  
B. A. Ogundeji ◽  
M. A. Adesokan
Keyword(s):  
Performance Evaluation ◽  
Small Scale ◽  
And Performance

Development and Performance Evaluation of Irish Potato Peeling Machine

2020 ◽  
pp. 11-23
Author(s):  
Ademola Olagoke Afolabi ◽  
Muhammad Lawal Attanda
Keyword(s):  
Performance Evaluation ◽  
Feed Rate ◽  
Irish Potato ◽  
Small Scale ◽  
Maximum Output ◽  
Household Level ◽  
Output Capacity ◽  
Randomized Design ◽  
And Performance ◽  
Potato Peeling

An Irish potato peeling machine was developed for use at small-scale/household level. Machine performance evaluation was carried out using three locally grown Irish potato varieties namely; Nicola, Bartita and Bawondoya respectively. A 22x3 factorial experiment in completely randomized design (CRD) with three replications was used for evaluation where tuber feed rate, shaft speed and variety were the independent variables and peeling efficiency, tuber flesh loss and machine output capacity were the performance indicators. Analysis of variance (ANOVA) results showed the effects of variety on peeling efficiency and feed rate on output capacity as highly significant (P=.01). Also, the interaction of speed and variety on peeling efficiency and the effect of variety on output capacity was significant (P=.05). The interaction of variety and speed at 480 rpm achieved a maximum mean peeling efficiency of 55.6% for Bawondoya. Similarly, at slightly higher speed of 510 rpm, the maximum mean peeling efficiency of 64.6% was achieved for Bartita. Flesh loss value of 0.84% was the least obtained and this was for Bartita while the highest flesh loss of 1.43% was observed for Nicola. At feed rates of 50 g/sec and 60 g/sec; the minimum and maximum output capacities of 31.3 kg/h and 59.2 kg/h were obtained respectively.

scholarly journals Fabrication and Performance Evaluation of Cowpea Thresher for Small Scale Cowpea Farm Holders in Nigeria

2018 ◽  
pp. 1-11
Author(s):  
O. W. Muhammed-Bashir ◽  
K. O. Oriola ◽  
B. A. Ogundeji ◽  
M. A. Adesokan
Keyword(s):  
Performance Evaluation ◽  
Study Design ◽  
High Efficiency ◽  
Throughput Capacity ◽  
Small Scale ◽  
Maximum Throughput ◽  
Sieve Size ◽  
Dimension Analysis ◽  
The Mean ◽  
And Performance

Aims: To develop and evaluate an affordable, accessible, easy-to-operate and functional small-scale thresher machine to make cowpea farming a profitable venture. Study Design: Fabrication and performance evaluation. Place and Duration of Study: Premises of DAF Technical Services, Ilorin, Nigeria, between June, 2017 and February, 2018. Methodology: Construction of a cowpea thresher machine was carried out by sizing and marking out the plate with the aid of scriber and cutter. The shaft was smoothened and the various components were welded and assembled with the aid of fasteners. The thresher was made-up of the feeding unit, which provided an opening through which the cowpea was introduced into the machine for threshing. As the various components of the cowpea thresher (threshing drum, the lower concave (screen), the spikes and separating unit) were being assembled, dimension analysis was carried out on two varieties of cowpea grains. This was meant to determine the screen sieve size. Results: Findings from this study indicated the mean cowpea grain threshing efficiencies of 71.40, 66.10, and 63.10% at a different speed of 472, 339, and 283 rpm respectively. The maximum throughput capacity (59.78 kg/hr) was obtained at threshing speed of 472 rpm. This revealed that as the speed decreased the threshing efficiency, the throughput capacity and grain loss also decreased, while damaged grains are negligible. Conclusion: The fabricated cowpea thresher is therefore, a suitable machine with high efficiency to carry out necessary small scale post-harvest operations in cowpea production.

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