Manufacture of Concave Sieves Group for Small Thresher to Suit Threshing Lentil Crop

El-Haddad, W.Z.; El-Khateeb, Hamada; Ahmed, Ismail F. Sayed

doi:10.21608/mjae.2010.105076

Cited by 3 publications

(4 citation statements)

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“…Generally, the results indicated that total grain damage increased with increasing the cylinder speed, fan speed, concave -drum clearance at rasp-bar type cylinder. Similar results were achieved by Kolganov (1956), Vas and Harison (1969), Singh and Kumar (1976), Kumar and Goss (1979), Joshi and Singh (1980), Sharma and Devnani (1980), Singh et al (1981), Anwar and Gopta (1990), Alonge and Adegbulugbe (2000), Sudajan et al, (2002), Khazaei et al, (2002), Johnson (2003), Khazaei et al, (2003), El-Haddad (2004, Vejasit and Salokhe (2004), El-Haddad et al, (2006), Askari Asli-Ardeh et al, (2008, Chimchana et al, (2008) and Ponican et al, (2009).…”

Section: Effect Of Different Drum Speed Fan Speed Concave -Drum Clear...supporting

confidence: 70%

“…Wheat in the Sudan is predominantly produced in the irrigated production system and has been targeted as a major food security crop in the Sudan since the 1980s (El Faki, 2000). The average area allocated for wheat represented only 3% of total area under cereals but still accounting for about 11.7% of total cereal production during the period from 2006(MoFEP, 2012. Other cereals (mainly sorghum and millet) are produced in the rain fed system.…”

Section: Introductionmentioning

confidence: 99%

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Design, Fabrication and Performance Evaluation of Wheat Crop Thresher for Small-Scale Farmers

2024

NSJ

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Wheat crop thresher had been designed, manufactured and tested in the workshop of the department of agricultural engineering, faculty of agricultural sciences, university of Dongola, northern state of Sudan under collaboration of Alshamaliya for Agricultural Services Company, for small-scale farmers were made simple and includes threshing cylinder, concave, shaker, pulleys and sieve. For purpose of improving thresh efficiency the cylinder-concave clearance was made adjustable at two points. The thresher was tested for wheat variety (Imam) at two levels of concave-clearance (15, 20 mm), two fan speeds (1042, 1390 rpm), two cylinder speeds (650, 900 rpm) and two cylinder types using (rasp-bar type, wire-loop type) three replications in a randomized complete block design. Results obtained showed a high efficiency of threshing at clearance 20 mm in fan speed of 1390 rpm at a cylinder speed of 900 rpm and rasp-bar type cylinder. The shape and diameter of concave and sieve holes which designated according to the geometric mean diameter for tested wheat has given a very good results based on threshing efficiency (TE), separation losses (SL), cleaning efficiency (CE) and product purity (Pp) which were 69.9 %, 30.1 %, 82.3 % and 93.2 % respectively.

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Section: Effect Of Different Drum Speed Fan Speed Concave -Drum Clear...supporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Design, Fabrication and Performance Evaluation of Wheat Crop Thresher for Small-Scale Farmers

2024

NSJ

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“…Moreover, the time to consume rice husks to completely gasify the rice husks in the reactor depends on the density of the rice husk, the volume of the reactor, and the fuel consumption rate, which determines the total time to consume the rice husk. The volumes of the reactors for non-insulated and insulated-type gasifier stoves are 0.019 and 0.010 m 3 , respectively, and the rice consumption per batch was 2.512 and 1.180 kg, respectively. It was observed that the non-insulated type of gasifier stove has a higher fuel consumption rate than the non-insulated one.…”

Section: Fuel Consumptionmentioning

confidence: 99%

Evaluation and Modeling the Performance of Rice Husk Gasifier Cook Stove for Household Energy Use

Fetene,

Tikuneh

2024

Preprint

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This research paper aims to evaluate and model the performance of rice husk gasifier cook stoves for household energy use, a byproduct of rice milling. The study aims to address environmental issues and promote the use of rice husk as a renewable energy source and pest repellent in stoves. The study compared insulated and non-insulated gasifier stoves using rice husk gasification. The study compared the start-up time of insulated and non-insulated gasifier stoves, where the insulated stove showed a lower start-up time, but there was no significant difference at a 5% probability level. The temperature change also was not significant, as heat transfer and temperature change started when the husk was ignited. The burner stoves had different size and volume. The maximum operated or flame temperature was 1,190.30oC at room or minimum temperature of 27.33 oC, whereas the average temperature was 758.916oC for the non-insulated type of gasifier stove. The insulated gasifier stove also observed maximum and average temperatures of 518.30 oC and 289.014oC respectively at the same room temperature. The operating time of stoves directly influences the fuel consumption rate, specific gasification rate, and combustion zone rate of stoves. The fuel consumption rate has a significant effect on the type of gasifier stove, with the maximum rates being 3.820 and 2.099 kg/hr. The time to consume rice husks to gasify them depends on the density of the rice husk, reactor volume, and fuel consumption rate. The average specific gasification rate for insulated and non-insulated stoves is 106.45 and 120.63 kg/m2h, respectively. The fuel or rice husk holding capacity of each type of stove is significant at a 5% level, with the amount of rice husk and biochar produced being 1.18kg and 0.27kg for insulated stoves, and 2.511kg and 0.688kg for non-insulated stoves, respectively. The performance of gasifier stoves varies based on the bio char conversion rate, with non-insulated stoves producing a higher bio char mass per rice husk. Multiple regression analysis was used to model the relationship between time elapse with temperature and heat energy. The Squirrel-2020 data logger was used to measure the temperature produced by burning rice husks in the reactor of the stove as well as related generated and losses of heat. A relationship between the heat energy produced and the operating time of gasifier stoves was conducted to estimate the model. The cubic polynomial model was found to be the best predictive model fit for all variables of this study.

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“…Dhande concluded that the power operated paddy winnower after been tested at three feed rates 112 kg/hr, 127 kg/hr and 138 kg/hr, respectively that the highest cleaning efficiency of 99.3 per cent was found at feed rate of 127 kg/hr and highest output capacity was found at feed rate of 138 kg/hr. The percentages of blown grain were less than 1 per cent in case of all three feed rate" [7][8][9][10][11]. Usman D. Drambi et al also concluded that "as the feed rate and fan speed increases, the cleaning efficiency decreases, hence the need to determine the optimum cleaning efficiency and minimum percentage grain loss.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of a Sorghum Winnowing Machine

Oyegunwa, O. A.,

Adejugbe, I. T.,

Olorunsola, I. T.

et al. 2023

JERR

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The process of winnowing grains such as SORGHUM has been widely done manually in a lot of developing countries, such as Nigeria and this comes with a lot of stress and reduced output/productivity hence the need to develop a machine that will ease such burdens so that there is a better productivity and a reduced human effort in the winnowing process. As such, an electric-powered sorghum winnowing machine was designed and fabricated with locally sourced materials to ensure ease of maintenance and at no compromise to its efficiency and reliability. The machine component parts include the blower, hopper, feed gate, lever, and the machine frame. Sorghum sample was tested with the machine for operational effectiveness and the result shows that the machine has a winnowing capacity of 530kg/hr and a winnowing efficiency of 96%. The fabricated winnowing machine performed well with high winnowing efficiency, reliability, and durability with an estimated cost of $450. It was also discovered that the cost of winnowing 1kg sorghum is highly encouraging. The study was carried out in Akure, Ondo State, Nigeria. A performance evaluation was carried out on the machine and a cleaning efficiency of 96% was achieved.

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Manufacture of Concave Sieves Group for Small Thresher to Suit Threshing Lentil Crop

Cited by 3 publications

References 0 publications

Design, Fabrication and Performance Evaluation of Wheat Crop Thresher for Small-Scale Farmers

Design, Fabrication and Performance Evaluation of Wheat Crop Thresher for Small-Scale Farmers

Evaluation and Modeling the Performance of Rice Husk Gasifier Cook Stove for Household Energy Use

Design and Development of a Sorghum Winnowing Machine

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