Problem Solved: Energy Savings Due to Pump Efficiency - Wastewater Math

The problem reads:
A 6-year old pump motor is to be replaced. The new motor, just like the old one, would
run 75% of the time. Both existing and replacement motors would operate at 100
OUTPUT HP. The existing motor efficiency is 86% while the replacement motor would be guaranteed at 94% efficiency. Electricity currently averages $0.0780 per KWH. Calculate the energy cost savings per year (to the nearest dollar, assume 365 days/yr) if the existing pump is replaced with the new pump (neglect any consideration of impact upon demand charges or interest on capital)

[gingera]

This is a gold mine. Easy to understand

[AsgharAli-hgng]

Thank you very much it's very informative videos

[arifmohamed]

Can you please help me how to find the high pressure pump required in reverse osmosis system for commercial plant

[DabishsekyenSimon]

Pls what theory or principle does this work with, is it the Bernoulli theory.