An electrically driven pump operating at steady state
Chapter 6, Problem 6.182(choose chapter or problem)
An electrically driven pump operating at steady state draws water from a pond at a pressure of 1 bar and a rate of 50 kg/s and delivers the water at a pressure of 4 bar. There is no significant heat transfer with the surroundings, and changes in kinetic and potential energy can be neglected. The isentropic pump efficiency is 75%. Evaluating electricity at 8.5 cents per kW \(\cdot \) h, estimate the hourly cost of running the pump
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