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2. An oil having density of 833 kg/m3 and a viscosity of 3.3 x 103 Pa.s is pumped from an open tank to a pressurized tank held at 345 k Pa gauge. The oil is pumped from an inlet at the side of the open tank through a line of commercial steel pipe having an inside diameter of 0.07792 m at the rate of 3.494 x 103 m/s. The length of the straight pipe is 122 m and the pipe contains two elbows (90) and a globe valve half open. The level of liquid in the open tank is 20 m above the liquid level in the pressurized tank. The pump efficiency is 65%. Calculate the kW power of the pump.

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35KPa. age Forトip, 이。。 -3 3.494 x 10-3 3.3צ,-3 0.0子91 0-039 z ㆁ.oo守ij For f*elouw 2, 2% 8% 83 3x9.&1 Hr= 63.56m P 63.56x 833x9.81x 344 X103 P= 2.3 kW

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