Water Resource- Pump

Water System Design Project Your client has given you the task of designing a piping and pumping system to pump water between two reservoirs. The lower reservoir has a water surface elevation of 3450’ and the upper reservoir has a water surface elevation of 4680’. You can assume that the water surface elevation is constant for both reservoirs (often this is not the case). The distance between the two reservoirs is 4800’. You can consider this the total length of pipe necessary to span the two reservoirs. Your client requires a flowrate of 8 cfs to be pumped from the lower to the upper reservoir. This system will consist of pumps, pipes, and a set of fittings (eight 90° miter bends with vanes, six flanged gate valves, one flanged swing check valve, one bellmouthed entrance, and one outlet). You will need to choose a pipe diameter. To do this you should know that the client would prefer that you keep the velocity in the pipe to around 10 ft/s. Choose a diameter that is evenly dividable by 6” and that gives you a reasonable velocity. For this assignment, you will need to do the following:

1. Develop a system curve for the conditions listed above. Choose the pipe material and a pipe diameter (see comments on velocity above). Include the minor losses in the headloss calculations.

2. Select a pump from a pump manufacturer for your design point using the pump

selection program at pump-flo.com. Choose one pump for each scenario.

a. 1 based on using a single pump (not all companies manufacture big pumps you may try GOULDS or Robbco)

b. 1 based on using 3 series pumps (these 3 pumps will be identical) c. 1 based on using 3 parallel pumps (these 3 pumps will be identical) d. 1 based on using 3 parallel pumps AND 3 series pumps (these 9 pumps

will be identical). Basically, this means that you will have 3 pumping stations that are in series, and each pumping station has 3 pumps in parallel (see figure).

You should have 4 pump selections total (1 pump for each of the 4 different scenarios). For each pump chosen, list the pump manufacturer, type, speed, dimensions, and other related information. Also, print out the data sheet for each pump chosen and include these in your report. To help you in selecting the operating points for each pump in each scenario, fill in the following table:

Single Pump

Operating Point

Scenario

a b c d Q (gpm)

H (ft)

3. Develop four graphs, one for each scenario described above. Each graph will include your system curve and pump curve(s). You will have one pump curve for scenario (a), and two curves each for scenarios (b), (c), and (d). For scenarios (b), (c), and (d) you will have a curve for a single pump and a curve for the combined pump system. To add the pump curve for each scenario, print out the data sheets from pump-flo.com. At the bottom of the data sheet is a table with values of Q and H along the pump curve. Place these values in Excel and add a new series to your graph that has the system curve. Now, calculate what the pump curve will be for the combined pump system for scenarios (b), (c), and (d). Add this as another series to each of the graphs for these scenarios.

4. ONLY for scenario (a), calculate modified system curves for pipes of the following ages: 5, 10, and 15 years. Make a new plot showing the modified system curves (labeled appropriately) as well as the pump curve for this scenario. Also, include the efficiency curve (using the secondary y-axis to plot efficiency). Comment on your results. How does an aging system affect the operating point? How does an aging system impact the operating efficiency of the pump?

5. ONLY for scenario (a), place modified pump curves for your chosen pump operating at 5 different speeds (i.e., if your pump speed is 575 rpm, produce pump curves for 775, 675, 575, 475, and 375 rpm). Comment on when you would run a pump at variable speeds.

Project Delivery:

• You need to submit one excel file with 10 sheets labeled as: o Properties o System Curve (SC) o Case(a) o Case(b) o Case(c) o Case(d) o Modified SC (1) o Modified SC (2) o Modified SC (3) o Variable Speed

• Answer all the questions in its appropriate sheet. • Label figures properly (variables, units, legends, and titles). • Other than the first and second excel sheets, all others must be accompanied by

PUMP-FLO data sheets in pdf. Use insert/Object/Adobe Acrobat Document to attach the pump design specifications to your excel file.

• Contribution of each team member should be included in the Properties sheet as Student A=60% Student B=40%.