Mr. Williams has a small swimming pool in his backyard. The pump that
pumps water from a well to the pool is broken. However, he found a used
pump in a second-hand
electric utility store. To insure
that the pump matches his motor, he needs to figure out the
power required to run the pump.
What is known:
- The pump is capable of increasing the pressure of water up
to 300 kPa.
- The flow rate through the pump is 20 kg/min.
- The pump has an isentropic efficiency of 85%.