DEVELOPMENT AND PERFORMANCE EVALUATION OF A GROUNDNUT OIL EXPELLER

U.B. Hassan, Z.D. Osunde

Abstract


The research work was carried to develop and evaluate the performance of a groundnut oil expeller. Design analysis and calculations were performed so as to determine and select appropriate materials for the machine component parts. The machine components include kneader shaft, hopper, kneader blades, extraction chamber, oil outlet, bearing, pulleys and frame. The machine was designed to kneed 10 kg of groundnut paste per batch using an electric motor of 1 hp, 1450 rpm speed with head pulley of 50 mm diameter. The kneading speed and kneading time ranged between 250 – 400 rpm and 6 – 12 minutes respectively. The operation of the machine is based on the traditional method of oil extraction. However it saves time, reduces the drudgery and improves the quantity of groundnut oil produce by our local processors. The mean throughput capacity, mean percentage oil yield, mean oil loss and mean oil extraction efficiency were found to be 40.44 kgh-1, 35.9%, 19.4% and 80.6% respectively.

KEYWORDS: Groundnut paste, oil expeller, design, fabrication, throughput capacity, oil yield, extraction efficiency.


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References


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