ABSTRACT

Conversion from horsepower (hp) and revolutions per minute (n) to torque (T) in ft-lb according to

yields

as the required starting torque Upon calculating the moment of inertia of the kiln according to equation (3-7), we

find

From equation (2-1), the equivalent moment of inertia at the clutch is given by

According to equation (3-6), the approximate time for the motor to bring the kiln up to speed is

For a more precise calculation of the time to get up to speed, we may turn to equation (42), which requires the input data shown in Table 1, as read and calculated from the 100% speed difference curve in Figure 6.