(Solved): Problem 4 A certain part of cast iron piping of a water distribution svstem imvolves a parallel sec ...
Problem 4 A certain part of cast iron piping of a water distribution svstem imvolves a parallel section. Both parallel pipes have a diameter of 30cm, and the flow is fully turbulent. One of the branches (pipe A) is 1500m long while the other branch (pipe B) is 2500m long. Properties of wateri ?=999.1kg/m2 and ?=1.138x101kg/ms. The rouchness of cast iron pipe is c=0.00026m. 1) Determine the average velocity and volume flow rate through pine B. If the flow rate through pipe A is 0.4m2/s and fA? is assumed to be equal to fnt?. Disregard minor losses. The structure of the piping system is changed now, and pipe A has a halfway-closed gate valve (K4?=2.1) while pipe B has a fully open globe valve (KL?=10). Solve following problem (2) and (3) with assumption of fA?=fE?, and the other minor losses are negligible. 2) Determin the losses in the pipe A (i.e. sum of major and minor head losses). 3) Determine the average velocity and volume flow rate through pipe B.