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Water is being pumped from a large lake to a reservoir 25
Chapter 5, Problem 73P(choose chapter or problem)
Problem 73P
Water is being pumped from a large lake to a reservoir 25 m above at a rate of 25 L/s by a 10-kW (shaft) pump. If the irreversible head loss of the piping system is 5 m, determine the mechanical efficiency of the pump.
Questions & Answers
QUESTION:
Problem 73P
Water is being pumped from a large lake to a reservoir 25 m above at a rate of 25 L/s by a 10-kW (shaft) pump. If the irreversible head loss of the piping system is 5 m, determine the mechanical efficiency of the pump.
ANSWER:
Solution
Step 1 of 5
The pump is moving the water from the large lake to a higher reservoir at 25m as shown in the figure below. The head loss of the pipe is given to be 5m, here we need to calculate the mechanical efficiency of the pump using the energy equation.