A pump is used to draw water from an open reservoir to an open tank on the top of a building. The discharge flow rate is 50 lps. The static suction head of the pump is 6 m and the static discharge head is 20 m. The cast iron, schedule 40, pipe in the suction line is 4 inches nominal diameter and 20 m long. The cast iron, schedule 40, pipe in the discharge line is 6 inches nominal diameter and 65 m long. The fittings and valves installed in the suction line are the following: two 90o standard elbow and one gate valve. For the discharge line, are the following: one check valve, one gate valve, and three 90o standard elbows. Assuming a water viscosity of 0.001002 Pa-s, and a pump efficiency of 82%. Determine a) the total dynamic head b) the pump brake power. Show the neat schematic diagram of pumping system. Note: Use Moody’s equation for the value of friction factor; and table for determining the equivalent length of the components.
2) A pump is used to draw water from an open reservoir to an open tank on the top of a building. The discharge flow rate is 50 lps. The static suction head of the pump is 6 m and the static discharge head is 20 m. The cast iron, schedule 40, pipe in the suction line is 4 inches nominal diameter and 20 m long. The cast iron, schedule 40, pipe in the discharge line is 6 inches nominal diameter and 65 m long. The fittings and valves installed in the suction line are the following: two 90o standard elbow and one gate valve. For the discharge line, are the following: one check valve, one gate valve, and three 90o standard elbows. Assuming a water viscosity of 0.001002 Pa-s, and a pump efficiency of 82%.
Determine
a) the total dynamic head
b) the pump brake power. Show the neat schematic diagram of pumping system. Note: Use Moody’s equation for the value of friction factor; and table for determining the equivalent length of the components.
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