The performance evaluation of a dual-function device for slicing and drying Okra developed at the Federal College of
Agriculture, Ishiagu Nigeria was carried out and reported. The device was designed to slice and dry okra in one single-sequence
operation. To evaluate the device, some physical characteristics including the axial length, mean equivalent diameters and sphericity
of okra samples were measured to determine slicing blade characteristics and other machine considerations. The results showed that
the mean axial length, equivalent diameters and sphericity determined for each okra sample categorized as big (A), medium (B) and
small (C) are; axial length: 74.62, 59.7 and 44.03mm, equivalent diameters: 24.54mm, 19.20mm and 15.79mm, sphericity: 0.56, 0.55,
0.62 respectively. Evaluating the performance of the device, the overall slicing efficiency is 95.29%, with a maximum efficiency of
97.50% recorded while slicing small size okra. The overall machine capacity is 12.59 kg h-1 while the average chip length, width
and thickness are 19.56mm, 7.52mm and 3.39mm, respectively while the drying efficiency of 87.68% was obtained within the drying
chamber. The results showed significant improvement in modified machine performance over the existing machine in terms of
slicing efficiency and output capacity.
About the Authors
Engr. Bello, R S.
Onyeanula P. E.
Nebo E. U.