Development of Monograph to Estimate Actual Rotor Speed for a Given Nut Exit Velocity in a Centrifugal Nut Cracker

Abstract

In an attempt to shorten the computational procedure to estimate actual rotor speed for any given nut exit impinging velocity in a centrifugal nutcracker; a Monograph was developed using experimental data, analytical, and systematic approaches. The result showed that direct reading of actual rotor disc speed in rpm corresponding to any chosen nut exit velocity from any given rotor disc radius was achieved based on theoretical rotor speed. T-test comparing actual rotor disc speeds in rpm from the Monograph and model Equation 12 showed no statistically significant difference at 5% level of probability. Therefore, the developed Monograph is reasonably good for predicting the actual rotor disc speed in rpm required during nut cracking operation in a centrifugal nutcracker.