考虑水温的塑料硬管沿程水头损失计算公式探讨

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

根据已有的塑料硬管沿程水头损失计算公式 ,采用多元线性回归计算方法 ,提出了微灌塑料硬管沿程水头损失计算公式 ,这一公式同时考虑了管径、流速和水温等影响因素 ,使计算结果更加符合实际。通过分析 ,认为这一公式能满足设计要求 。

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.