The resistances of two splits A and B are 0.35 Ns'm and 0.05 Ns'm respectively. The...
The resistances of two splits A and B are 0.35 Ns'm and 0.05 Ns'm respectively. The combined resistance of the shafts and trunk airways is 0.4 Nsm8. A booster fan is planned to be installed in split A to increase the quantity flowing through it. Assuming that the surface fan continues to operate at a constant pressure of 1000 Pa, the critical pressure of the booster fan in Pa is