water 20 degrees C in a 10-cm diameter , flow rate of 0.02m^3/s. drop over 130m of the pipe.

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Water at 20C is transported in a 10-cm-diameter cast iron horizontal pipe at a flow rate of 0.02 m/s. The pressure drop over 130 m of the pipe is nearest: Solution: 1. From conservation of energy, the pressure drop is found to be equal to Ap = y m/s 2. The average velocity is U = 3. Find frictional factor f: o Cast iron, roughness e- m; o Relative roughness e = o Reynolds number Re= X10 o From Moody diagram, find f 4. The frictional head loss is then m 5. Thus the pressure drop is kPa