Water Pressure Loss through Piping

on 05 April 2016. Posted in Fluid Dynamics

Water Pressure Loss Through Piping formulas
\(\large{ p_l = \frac{ \mu \; l \; {v_w}^2 \; \rho \; SG }{ 24 \;d \; g } }\) \(\large{ p_l = 4.53 \; l \; \frac{ \frac{ Q_w }{ C }^{1.852} }{ d^{4.857} } }\)
Symbol	English	Metric
\(\large{ p_l }\) = water pressure loss	\(\large{\frac{lbf}{in^2}}\)	\(\large{Pa}\)
\(\large{ \rho }\) (Greek symbol rho) = density of water	\(\large{\frac{lb}{ft^3}}\)	\(\large{\frac{kg}{m^3}}\)
\(\large{ \mu }\) (Greek symbol mu) = friction coefficient of water	\(\large{dimensionless}\)
\(\large{ g }\) = gravitational acceleration	\(\large{\frac{ft}{sec^2}}\)	\(\large{\frac{m}{s^2}}\)
\(\large{ l }\) = length of pipe	\(\large{ft}\)	\(\large{m}\)
\(\large{ C }\) = pipe coefficient	\(\large{dimensionless}\)
\(\large{ d }\) = pipe inside diameter	\(\large{in}\)	\(\large{mm}\)
\(\large{ SG }\) = specific gravity of water	\(\large{dimensionless}\)
\(\large{ Q_w }\) = water flow rate	\(\large{\frac{ft^3}{sec}}\)	\(\large{\frac{m^3}{s}}\)
\(\large{ v_w }\) = water velocity	\(\large{\frac{ft}{sec}}\)	\(\large{\frac{m}{s}}\)

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Water Pressure Loss Through Piping formulas