(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 $30\mathrm{cm}$, and the flow is fully turbulent. One of the branches (pipe A) is $1500\mathrm{m}$ long while the other branch (pipe B) is $2500\mathrm{m}$ long. Properties of wateri $?=999.1\mathrm{kg}/{\mathrm{m}}^2$ and $?=1.138\mathrm{x}$ $10^1\mathrm{kg}/\mathrm{ms}$. The rouchness of cast iron pipe is $\mathrm{c}=0.00026\mathrm{m}$. 1) Determine the average velocity and volume flow rate through pine B. If the flow rate through pipe $A$ is $0.4{\mathrm{m}}^2/\mathrm{s}$ and $f_A$ is assumed to be equal to $f_{nt}$. Disregard minor losses. The structure of the piping system is changed now, and pipe A has a halfway-closed gate valve $\left(K_4=2.1\right)$ while pipe $B$ has a fully open globe valve $\left(K_L=10\right)$. Solve following problem $(2)$ and $(3)$ with assumption of $f_A=f_E$, 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 $B$.