Interpretation: The hourly energy cost for pumping the water is to be determined.
Concept introduction: The energy cost can be found by calculating the power required by the pump for the given amount of efficiency.
The power for FPS system is given as,
The notations used here are,
P = Power developed by the pump
g = Acceleration due to gravity
H = Head developed by the pump
Q = Flow rate by the pump
The Reynolds number is given as,
The notations used here are,
D = Diameter of pipe
The head developed by the pump is the sum of the original elevation of the pump and the head developed due to energy consumption by the pump.
The developed head in FPS units is calculated as,
L = Length of the pipe
The roughness parameter is given as,
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Unit Operations of Chemical Engineering
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