Problem: Hot water in an open storage tank at 82.2°C is being pumped at the rate of 0.379 m3/min from this storage tank. The line from the storage tank to the pump sunction is 6.1m of 2-in. schedule 40 steel pipe and it contains three elbows. The discharge line after the pump is 61 m of 2-in. pipe and contains two elbows. The water discharges to the atmosphere at a height of 6.1 m above the water level in storage tank. a. Calculate all frictional losses ƩF. b. Make a mechanical-energy balance and calculate Ws of the pump in J/kg. c. What is the kW power of the pump if its efficiency is 75%?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Friction Losses and Pump Horsepower

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Hot water in an open storage tank at 82.2°C is being pumped at the rate of 0.379 m3/min from this storage tank. The line from the storage tank to the pump sunction is 6.1m of 2-in. schedule 40 steel pipe and it contains three elbows. The discharge line after the pump is 61 m of 2-in. pipe and contains two elbows. The water discharges to the atmosphere at a height of 6.1 m above the water level in storage tank. a. Calculate all frictional losses ƩF. b. Make a mechanical-energy balance and calculate Ws of the pump in J/kg. c. What is the kW power of the pump if its efficiency is 75%?

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