Equation of Friction Loss Along the Plastic Pipe of Micro-Irrigation System

The equation for friction loss along the plastic pipe of micro irrigation is presented adopting the multiple regression analysis according to existing friction loss equation. The new equation is superior to existing equation in calculated results owing to considering pipe diameter, flow velocity and water temperature at the same time. The calculated result is more precise. The error analysis shows that the equation is satisfied with the requirement of project design. The developed equation can be employed in the design of micro irrigation pipe system.