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5. (20 points) Mechanical Energy Balances Water is pumped from a reservoir to a tank suspended 30m above the reservoir. The water flows through the
5. (20 points) Mechanical Energy Balances Water is pumped from a reservoir to a tank suspended 30m above the reservoir. The water flows through the same size pipe throughout the process. Both the reservoir and the tank are open to the atmosphere. If friction in the pipes consumes 35% of the pump energy, determine the mass flow of water if a 2hp pump is used. Assume the liquid water has a density of 1g/cm3. a. Draw a picture of your system. Label parameters of interest in a mechanical energy balance. Use variables to define unknowns. b. Write the open system mechanical energy balance and eliminate unnecessary terms. Justify any eliminated terms. c. What is the mass flow rate of water? Please give your answer in kg/min. 5. (20 points) Mechanical Energy Balances Water is pumped from a reservoir to a tank suspended 30m above the reservoir. The water flows through the same size pipe throughout the process. Both the reservoir and the tank are open to the atmosphere. If friction in the pipes consumes 35% of the pump energy, determine the mass flow of water if a 2hp pump is used. Assume the liquid water has a density of 1g/cm3. a. Draw a picture of your system. Label parameters of interest in a mechanical energy balance. Use variables to define unknowns. b. Write the open system mechanical energy balance and eliminate unnecessary terms. Justify any eliminated terms. c. What is the mass flow rate of water? Please give your answer in kg/min
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