Determine the total head for the pump ( total maximum differential pump head ) f

Question

Determine the total head for the pump (total maximum differential pump head) for the system shown in the following figure. The pump is to transfer 200 gallons per minute of heavy acid (specific gravity 1.5) from the suction tank to the discharge tank. The liquid level in the suction tank is 5 feet below the centerline of the pump. The friction losses in the suction line are 4.5 feet at the rated flow. The liquid level in the discharge tank is 100 feet above the suction nozzle centerline. Friction losses in the discharge line are 25 feet at the rated flow. [134.5 ft]

Explanation / Answer

Total head = static height + static lift + friction loss

where

Static height = discharge head = 100 ft

Static lift = suction head = 5 ft

Friction loss = 4.5 + 25 = 29.5 ft

Total Head = 100 + 5 + 29.5

= 134.5 ft

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