Figure P4.101 shows a pumped-hydro energy storage system delivering water at steady state from a… 1 answer below »

Figure P4.101 shows a pumped-hydro energy storage system delivering water at steady state from a lower reservoir to an upper reservoir using off-peak electricity.Water is delivered to the upper reservoir at a volumetric flow rate of 150 m^3/s with an increase in elevation of 20 m. There is no significant change in temperature,pressure, or kinetic energy from inlet to exit. Heat transfer from the pump to its surroundings occurs at a rate of 0.6 MW and g=9.81 m/s^2. Determine the pump powerrequired, in MW.

 

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