Water Pressure Loss through Piping
Water Pressure Loss Through Piping formulas
| \(\large{ p_l = \frac{ \mu \; l \; {v_w}^2 \; \rho \; SG }{ 24 \;d \; g } }\) | |
| \(\large{ p_l = 4.53 \; l \; \frac{ \frac{ Q_w }{ C }^{1.852} }{ d^{4.857} } }\) |
Where:
| Units | 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 | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |
Tags: Pressure Equations Pipe Sizing Equations Water Equations