The pressure loss and the cleaning cycle. With the increase of the inlet concentration, the ash content of the same filtration area is rapid, and the pressure loss increases.
It is an effective method for improving test precision that the water head loss tests of hydropower station inlet section are performed by increasing discharge or raising reservoir water level.
同时采用加大流量法和提高库水位进行进水口段的水力损失试验，对提高试验精度是一个行之有效的方法。
3
Based on the theory of variety for researching a low head pump system, a new method to separate inlet conduit from pump system was put forward for measuring its hydraulic loss.