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Water is to be pumped from the Umgeni River up to a new open - air reservoir near Inchanga. The length of the water pipeline
Water is to be pumped from the Umgeni River up to a new openair reservoir near Inchanga. The length of the water pipeline is about a mile, and it rises from an altitude of above sea level to a height of above sea level. The Umgeni River flows at about into the inlet pipe, and the discharge velocity into the reservoir is about The outlet diameter of the pipeline at the reservoir is about The pump has an efficiency of This setup is shown below:
Answer the following questions:
Estimate the kinetic energy change of the water across the pipeline in Wkg
Calculate the power that must be supplied to the pump in during summer when the air temperature is @
It is expected that this reservoir can be emptied back into the river in an emergency to alleviate load shedding, by passing the water through a turbine to generate electricity. Calculate the maximum power that can be generated using this scheme in if the water trickles slowly back into the river. You may assume the inlet velocity is zero for this analysis.
Will the pumping requirements change in winter, provided all fluid velocities remain constant? Explain briefly.
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