Conduct a 24-hour simulation of the operation of the water distribution system in Problem...

Conduct a 24-hour simulation of the operation of the water distribution system in Problem 4.32 using a 1-hour computational time step. The demands are to be adjusted for each time step using global demand factors from fig.4.16 for the maximum day of the year. The elevated storage tanks are variable-level tanks with the elevation and storage information listed below.

The two pumps in the system are variable speed pumps is adjusted according to the elevation of the HGL at node 8 for pumps in line 9 and line 17 according to the following

Can the system meet the demands with pressures greater than 240 kPa (35psi)? If the system cannot, what changes in the pipe network system are needed?

Problem 4.32

The pipe network system in Problem 4.31 was expanded to a 24-pipe system shown below. The water levels in the two elevated storage tanks are 96.0 m (315 ft) and the water levels in the two ground-level storage tanks are the same 47.3 m (155.0 ft). The pump characteristics for the new pump in line 17 are the same as the existing pump in line 9 Compute the flow in each line and the pressure at each junction node.

Problem 4.31

The pipe network system in  problem  4.30 was expanded to a 14-pipe system  and includes a ground-level storage tank located near junction node 4. A pump is installed in a 457-mm (18-in) diamenter pipe extending 152m (500 ft) from the ground-level orage tank [WSEL = 47.3 m (155 ft)] to junction node 4. Three points on the pump characteristic curve are listed below. Compute the flow in each line and the pressure at each junction node.

Problem  4.30

Compute the discharge in each pipe and the pressure at each junction node for the 8-pipe system show below. The water surface elevated storage tank is 96.0m (315.0 ft).