| dc.description.abstract | CHESYA RITONGA : The effect of pulley diameter sizes of Screw Press Coconut
Milk Extractor. Supervised by ACHWIL PUTRA MUNIR and SULASTRI
PANGGABEAN.
The coconut milk extractor that had been designed previously was not
effective in its process, so the author suspected that the performance of the
machine will be better if pulley with right diameters were used. The research’s
purpose was to examine the effect of various pulley diameter on the effective
capacity, yield, and the percentage of left material of the coconut milk extractor.
This research was conducted in March 2017 to July 2017 in the Laboratory of
Agricultural Engineering, Faculty of Agriculture, University of North Sumatra,
using factorial randomized block design with one factor (R1, R2, R3, R4 and R5).
The parameters observed were effective capacity, yield and the percentage of left
material on The coconut milk extractor. From Duncan Multiple Range Tests it
was found that the pulley diameter had highly significant effect on the effective
capacity and had significant effect on percentage of material left behind and had
no effect on yield.
The result showed that the highest effective capacity was 34,75 kg/hour
at R5, the highest yield with treatment R5 was 77,75, and the percentage of
material left behind was the lowest at treatment R5 was 12%. | en_US |
