4.16 A 40% propylene glycol solution at 25°C is being delivered from a large storage tank with the gravity-feed pipe network shown in Figure P4.16. A concentric reducer is used to reduce the pipe size from 3-nom sch 40 to 2-nom sch 40 as shown in the figure. All pipes are commercial steel. Determine the following:

a. The volumetric flow rate of propylene glycol delivered by this system (L/s)

b. The velocity of the propylene glycol in each of the pipes (m/s)
The resistance coefficient for the concentric reducer can be estimated using Equations 4.18 and 4.20.