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Development of Cashew nut Shelling Machine

Kilanko, O. O and Ojolo, S.J and Inegbenebor, A.O. and Ilori, T. A and Leramo, R.O. and Babalola, P.O. and Oyedepo, Sunday Olayinka and Ishola, Felix and Onwordi, Patrick Nwanne (2019) Development of Cashew nut Shelling Machine. In: International Conference on Engineering for Sustainable World, 2019, Online.

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Cashew nut shelling machine was designed using impact method to improve shelling efficiency and whole kernel recovery for nuts roasted in hot oil. This was based on the principle of the optimum kinetic energy that could break the cashew nut shell. Deformation energy used was 4.8763 Joules, angular velocity of the impeller calculated from the energy was 26.43 rad/s which was equal to 252 rpm and minimum power required was calculated to be 257.7 Watts. The prototype of cashew nut sheller was constructed and evaluated for its shelling efficiency and whole kernel recovery using three levels of moisture content (7.00%w.b., 8.46%w.b. and 9.83% w.b.), three levels of impeller speeds and three nut sizes (large, medium and small). The results showed that moisture content has significant effect (at P < 0.05) on the shelling efficiency and whole kernel recovery of the nut for the three nut sizes while the impeller speed showed no significant effect. The optimal performance of the machine on large nuts for whole kernel recovery and shelling efficiency were 59.65% and 82.0% respectively at 1759 rpm and 7.00% w.b. For medium nut, they were 53.2% and 92.2% respectively at 1538rpm and 9.83% w.b. For small nut, they were 45.1% and 79.7% respectively at 1704 rpm and 7.00% w.b. Impact shelling methods works well with large cashew nuts as these exhibit higher whole kernel recovery than medium and small nuts.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Cashew nut, Moisture content, nut size, speed, Hot-oil roasting, Shelling efficiency, Whole kernels
Subjects: S Agriculture > S Agriculture (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 06 May 2020 11:32
Last Modified: 06 May 2020 11:32

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