help ASAP A pump send the pure water at 20degreeC from the mechanical room of a

Question

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A pump send the pure water at 20degreeC from the mechanical room of a building to the fourth floor which is 15 meters above the pump level through a single pipe with constant diameter. The fluid flow is steady; the velocity distribution is uniform everywhere. Pressure at the pump inlet is the atmospheric pressure and the required gauge pressure head at the fourth floor is 12 meters. The friction loss of the pipe is 3 meters. The volume flow rate of the fluid is 0.005 m3/s. Find the horsepower required for the pump if it is 85 percent efficient. 1 hp = 746 W rhowater = 998 kg/m3

Explanation / Answer

P = Q*rho*g*h /( efficiency) W ; Q = 0.005 m^3/s rho = 998 g= 9.81 h = 12+3 = 15 m P = 734.2785/0.85 W =0. 9843/0.85 hp = 1.158 hp

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