For Problem, the total power input to the pumps is 75 kW. At what efficiency are the pumps operating?
Problem
Pump A and pump B are connected in parallel in a system that includes 10 km of 600-mm pipe. The following data describe the head-discharge relationship for each pump:
Q, L/s | TDH, m | |
Pump A | Pump B | |
0 | 28 | 3 |
50 | 27 | 33 |
100 | 24 | 31 |
150 | 20 | 26 |
200 | 12 | 19 |
250 | — | 10 |
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