A typical duct operates at about-25 inches ( 160 psf . ) total suction pressure, with roughly 75 % of the pressure loss in the bag house, and 10 % of pressure lost in duct friction, and 15 % ( nominal ) lost in elbow turbulence.
22.
According to this theory, the root cells behave as ideal osmotic pressure system through which water moves up from soil solution to root xylem along an increasing gradient of D . P . D . ( suction pressure, which is the real force for water absorption ).
