Pregunta: The system in the figure consists of 1200 m of 5cm diameter cast iron pipe, two 45º(0.2) and four 90º(0.3) elbows, all coupled, an open globe valve (8.5), also coupled, and one output (1). If the elevation of point 1 is 400m, what gauge pressure in mca is needed at point 1 to provide a rate Q=0.005 m3/s of water at 20ºC in the tank? Assume a temperature of

The system in the figure consists of 1200 m of 5cm diameter cast iron pipe, two 45º(0.2) and four 90º(0.3) elbows, all coupled, an open globe valve (8.5), also coupled, and one output (1). If the elevation of point 1 is 400m, what gauge pressure in mca is needed at point 1 to provide a rate Q=0.005 m3/s of water at 20ºC in the tank? Assume a temperature of 20°C. kinematic viscosity 1.003X10-6 m2/s cast iron roughness = 0.26 mm.

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