$Q=70\frac{l}{s},$ pump efficiency $h=0\mathrm{.}6,$ electricity price $E=20TR\frac{Y}{k}Wh,$ pump running duration $b=4380$

hour$/$year$,$ interest and payback rate $p=13\%.$ Find economic pipe diameter using Darcy$-$Weisbach

formula

$=0\mathrm{.}02$

D$,$ mm $200250300350400500$

P$,$ TL$/$m $3300360049006200790012000$

$d_{\text{e}\text{c}\text{o}}=1\mathrm{.}5****Q=1\mathrm{.}5**0\mathrm{.}07$ Bresse formula

$J=(\frac{}{d})(\frac{v^2}{2}(g))$