MEC442 Pump Selection Assignment 2: Evaluate Head & Flow for Pump A and B in Series and Parallel Configurations

Your company has been assigned to evaluate two pumps; Pump A and Pump B to be used at piping system for transferring water from one large reservoir to another large reservoir that is at a higher elevation as shown in Figure 1. The free surfaces of both reservoirs are exposed to atmospheric pressure.

The piping system specifications at the various parameters are provided in Table 1. Kindly use the data for H_required or system curve

Table 1: Dimensions and minor loss coefficients for piping system

The performance curve (manufacturer data) for Pump A is given by an equation while Pump B is given in tabulated form. Kindly use the data for H_available for both pump A and pump B to be installed in the same piping system in Figure 1 and Table 1.

1. For Pump A

The pump performance curve (manufacturer data) is approximated by the expression:

By varying Q from 0 Lpm to 20 Lpm, plot the H_required and H_available on a clearly labeled graph and determine the operating head and flow rate.

[20 Marks]

2. For Pump B

The impeller has uniform blade height of 50 mm, with the impeller inlet of 40 mm and outlet radius of 80 mm, respectively. The exit blade angle is 15° and that the tangential velocity component of the water entering the blade is zero. Assuming ideal flow conditions, fill in the pump performance curve (manufacturer data) as shown in Table 2 below.

Plot the H_required and H_available versus Q from 0 Lpm to 30 Lpm. Clearly label the graph and indicate the operating point. State the equation represents by the curve.

Table 2: Pump B performance data

[20 Marks]

3. Evaluate the sum of Head and Volume Flow Rate, Q if Pump A and B connected in

a) Series

b) Parallel

[10 Marks]

Show all work, calculations, and tabulated data.