b- A centrifugal fan with a redial impeller produces a pressure equivalent to 100 cm Colum of water, the pressure and te
Posted: Tue Jun 07, 2022 3:11 pm
b- A centrifugal fan with a redial impeller produces a pressure
equivalent to 100 cm Colum of water, the pressure and temperature
at its entry are 0.980bar and 0.98 and 310 K. the electric motor
driving the fan runs at 3000 rpm. The efficiencies of the fan and
drive are 82% and 88% respectively the redial velocity remains
constant and has a value of 0.2 u2, the velocity at the inlet eye
is 0.4 u2, if the fan handles 200 m3/ min of air at the entry
conditions. Determine
1- Power required by the motor.
2- Impeller diameter.
3- Inner diameter of the blade ring.
4- Air angle at entry.
5- Impeller width at entry.
6- Draw the velocity triangle
equivalent to 100 cm Colum of water, the pressure and temperature
at its entry are 0.980bar and 0.98 and 310 K. the electric motor
driving the fan runs at 3000 rpm. The efficiencies of the fan and
drive are 82% and 88% respectively the redial velocity remains
constant and has a value of 0.2 u2, the velocity at the inlet eye
is 0.4 u2, if the fan handles 200 m3/ min of air at the entry
conditions. Determine
1- Power required by the motor.
2- Impeller diameter.
3- Inner diameter of the blade ring.
4- Air angle at entry.
5- Impeller width at entry.
6- Draw the velocity triangle