Question: A $90 %$ efficient pump driven by a $50 mathrm{hp}$ motor is used to transfer water at $70^{circ} mathrm{F}$ from a cooling pond to a

A $90 %$ efficient pump driven by a $50 \mathrm{hp}$ motor is used to transfer water at $70^{\circ} \mathrm{F}$ from a cooling pond to a heat exchanger through a 6 in. sch 40 pipeline. The heat exchanger is located $25 \mathrm{ft}$ above the level of the cooling pond, and the water pressure at the discharge end of the pipeline is $40 \mathrm{psig}$. With all valves in the line wide open, the water flow rate is $650 \mathrm{gpm}$. What is the rate of energy dissipation (friction loss) in the pipeline in kilowatts ( $\mathrm{kW})$ ?

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