Performance Evaluation of a Locally Fabricated Roasted Groundnut Dehuller (original) (raw)
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Development and performance evaluation of a roasted groundnut dehulling machine
A roasted groundnut dehulling machine was designed, constructed and evaluated. The test results showed that the machine operating speed and the roasted groundnut moisture content has significant effect on the machine capacity and the dehulling efficiency. The efficiency of the machine decreased with increase in moisture content. The machine attained highest efficiency of 80% and 12% moisture content and operating speed of 180rmp. All the materials used for fabrication were sourced locally and the cost of producing a unit of the roasted groundnut dehulling machine was estimated to be forty-five thousand naira (N45, 000.00) including the cost of the electric motor. The machine is affordable, simple to operate and feasible and therefore recommended for both small and medium scale roasted groundnut processors and seller.
Zenodo (CERN European Organization for Nuclear Research), 2020
Groundnut (Arachis hypogeae. L) is an important oil seed grown in over 100 countries for its nutritional value. In order to improve its storability and value, various ways of processing the seeds have been adopted among which is the roasting and removal of husk or rind from the roasted groundnuts. The process of removing of groundnut husk is mostly done manually and inappropriate for large scale processing. In order to improve groundnut seed husk dehulling process through mechanization, a roasted groundnut seed dehulling machine was developed and the effects of operating speed of the machine and moisture content of the seed on the on the efficiency of the machine was studied. 1kg of the roasted groundnut in five replicates with moisture content of 1.4, 1.6, 1.8, 2.0 and 2.2 % (w.b) respectively, was fed into the machine at different speed of 30, 35, 40, 45 and 50 rpm for each replicate. The machine had the best dehulling efficiencies of 80%, 78%, 77%, 90% and 73% at the lowest speed (30 rpm) while the lowest efficiency of 57%, 49%, 53%, 52% and 46% was recorded at the highest speed (50 rpm) in all moisture content (1.4, 1.6, 1.8, 2.0 and 2.2%) respectively. The best performance efficiency of 90% was gotten at 30 rpm and moisture content of 2.0 % (w.b). Hence, an optimum operating condition was established for the machine.
IRJET- Development and Performance Evaluation of a Roasted Groundnut Dehulling Machine
IRJET, 2021
The major problem facing the availability of groundnut in Nigerian market is the post-harvest processing in which removal of chaff is a major. This research was undertaken to develop and evaluate a roasted groundnut dehulling machine. The components of the machine were designed following the standard machine design procedures. Dehulling experiments were carried out at machine speed of 200, 300, 400 and 500 rpm and at clearance values of 0.0095, 0.0090 and 0.0085 m. In each run of the experiment, 1 kg of a well-prepared groundnut was used. Results from this study showed that at machine speed of 300 rpm, optimum dehulling efficiency was achieved and above this speed, the efficiency reduces. Also, it was deduced that change in the separation efficiency depends on machine speed followed by clearance although the effect is not significant (P<0.05). Furthermore, it was revealed that throughput capacity of the developed machine increases with increased speed. The change in the machine capacity significantly (P<0.05) depends on the machine speed followed by the clearance. Conclusively from the study, best conditions for dehulling roasted groundnut are clearance level of 9.50 mm at a machine speed of 300 rpm to yield a dehulling efficiency of 80.96 %, separation efficiency of 91.89 % and mechanical damage at a reduced value of 1.93 % at a throughput capacity of 55.27 kg/h. The study showed that the develop machine is efficient for groundnut dehulling operation.
DEVELOPMENT OF NCAM MOTORIZED TOAST GROUNDNUT SEED DEHULLER
A survey carried out on conventional or traditional method of dehulling roasted groundnut showed that the method consumes time, energy, has low output and efficiency and is also hazardous to health due to low level of hygiene involved. A motorized toasted groundnut dehuller was developed at the National Centre for Agricultural Mechanization (NCAM), Ilorin Nigeria. The machine consists of four major chambers which are hopper, dehulling, cleaning and the collecting chambers. The machine's performance was evaluated at a moisture content of 2.55% and at three different operating speeds namely 210.3 rpm, 286 rpm and 357.5 rpm. The parameters evaluated are; dehulling efficiency, cleaning efficiency, wholes percentage and percentage losses. The data were optimized using the R software version 3.4.3.Results show that the machine performed optimally at 210 rpm resulting to a maximum dehulling efficiency of 93.17%, cleaning efficiency of 94.35%, wholes percentage of 84.4% and least percentage loss of 6.13%. It was concluded from the results that the machine saved time and energy, reduced material wastage and hazards and therefore is more efficient than the conventional method. It is recommended that further evaluations should be carried out on the machine at various toast seed moisture content of the toast groundnut sample.
Step by Step Design Analysis and Calculations of an African Breadfruit Dehulling Machine
JOURNAL OF ADVANCES IN AGRICULTURE, 2016
African breadfruit seeds dehulling is a lucrative business in Nigeria. There is a high demand of the seeds in Southeastern of the Country. A little quantity of it is highly priced in the market. Despite the high demand of the breadfruit seeds for both nutritional and medicinal value, the rural processors usually dodge the production process. This is as a result of hard labour, time wasted and rigorous processes as associated with the manual method of dehulling the seeds – which are usually over 900 seeds in a single fruit, spongy pulp. The seeds have two coats, the outer coat is usually harder and thicker than the inner coat which make dehulling operation more tedious. The dehulling takes about 70% operation of the African breadfruit processing. Therefore, this paper reviewed the types of materials that can be used for fabrication a dehuller; designs considerations; design analysis and calculations of an African breadfruit seeds dehuller so as to provide a working document for des...
A locust bean dehulling machine was fabricated and evaluated using locally available materials. The machine performs dual operations of removing the seed coats and cleaning. Components of the machine include the frame, hopper, dehulling chamber, water container, discharge outlets, set of gears and bearings in operation. In operation, locust beans seeds introduced via the hopper moved to the auger which separates the soft pulp and conveys the material into the dehulling chamber. The seeds were washed in the dehulling chamber while the coat (residual waste) passes through the sieve into the water trough where it was discharged through the waste outlet. Throughput capacity, output capacity, recovery percentage and cleaning efficiency were 264.0kg/hr, 98.48%, and 98.75%, respectively. This machine may find applications in the processing of locust beans.
This work is aim at the design and development of a low cost groundnut decorticating machine for home and commercial use in Nigeria.4.36Kg of roasted groundnut was fed into the machine; this produces an average mass of 3.43Kg of peeled roasted groundnut seeds, 0.462Kg of unpeeled groundnut seeds,0.399Kg of partially peeled groundnut seed and 0.07Kg of broken groundnut seed. An average time of 488.8seconds and an average peeling efficiency of 78.46% was recorded. It was observed that the higher the mass of the roasted groundnut seeds the longer the time of peeling. The machine is cheap because the parts are locally fabricated. The technology could provide employment and at the same time make available quality roasted groundnut seeds at low cost for domestic and commercial use in Nigeria.
EVALUATION OF A LOCUST BEANS SEED DEHULLING MACHINE FOR SMALL SCALE FARMERS
IAEME, 2019
A locust bean dehulling machine was fabricated and evaluated using locally available materials. The machine performs dual operations of removing the seed coats and cleaning. Components of the machine include the frame, hopper, dehulling chamber, water container, discharge outlets, set of gears and bearings in operation. In operation, locust beans seeds introduced via the hopper moved to the auger which separates the soft pulp and conveys the material into the dehulling chamber. The seeds were washed in the dehulling chamber while the coat (residual waste) passes through the sieve into the water trough where it was discharged through the waste outlet. Throughput capacity, output capacity, recovery percentage and cleaning efficiency were 264.0kg/hr, 98.48%, and 98.75%, respectively. This machine may find applications in the processing of locust beans.
DEVELOPMENT AND PERFORMANCE EVALUATION OF FLUTED PUMPKIN SEED DEHULLING MACHINE
A machine for dehulling fluted pumpkin seed (Telfairia occidentalis) was developed. The main objective of developing the machine was to provide a better substitute to traditional methods of dehulling the seed which contains edible oil of high medicinal and nutritional values. Traditional methods are full of drudgery, slow, injury prone and would lead to low and poor outputs in terms of quantity and quality of dehulled products. The machine is made of five major parts: the feed hopper (for holding the seeds to be dehulled before getting into the dehulling chamber), dehulling chamber (the part of the machine that impacts forces on seeds thereby causing fractures and opening of seeds coats for the delivery of the oily kernels), discharge unit (exit for oily kernels and seed coats after dehulling), the frame (for structural support and stability of all parts of the machine) and electric motor (power source of the machine).The development process involved design of major components (shaft diameter (20 mm), machine velocity (7.59 m/s), power requirement (3hp single phase electric motor) and structural support of 45í µí±í µí± × 45í µí±í µí± × 3í µí±í µí±mild steel angle iron), selection of construction materials and fabrication. ANSYS R14.5 machine design computer software was used to design the shaft and structural support; while other components were designed with conventional design method of using design equations. The machine works on the principle of centrifugal and impact forces. Performance evaluation was carried out after fabrication and 87.26%, 2.83g/s, 8.9% and 3.84%were obtained for dehulling efficiency, throughput capacity, percentage partially dehulled and percentage undehulled respectively.
Performance Evaluation of an Improved Roasted Groundnut Seeds.pdf
Nigerian Journal of Engineering Science Research (NIJESR), 2018
In this research work, an improved roasted groundnut seeds decorticating machine was successfully designed and fabricated. The major components of the machine were as follows; feed hopper, bearing, collection tray, pulley, V-belt, electric motor, frame, cloth conveyor, rollers, rectangular mild steel plate embedded with foam, bearing and shaft. The roasted groundnut seeds were fed to the machine through the feed hopper, where it settled in a stationary rectangular plate material produced from mild steel material that is embedded with foam underneath it. The cloth conveyor materials move with the help of shaft roller driven by the electric motor and the stationary. When the roasted groundnut seeds come in contact with these two members, decorticating takes place as a result of friction. Ten batches of roasted groundnut seeds of different masses were used to evaluate the designed machine for performance. Time required to completely decorticate the roasted groundnut seeds were recorded and this was used to determine the machine throughput capacity. The results obtained show that a 2hp power electric motor and a torque of 83.67Nm were required by the machine. Besides, an average efficiency of 84.44%, average decorticating time of 122.797seconds, and machine throughput capacity of 0.1204kg/s were recorded. The machine performance was satisfactorily and can replace the traditional method of decorticating roasted groundnut seeds in developing countries.