CONVENTIONAL DRAINAGE SYSTEM | SIPHONIC DRAINAGE SYSTEM |
---|---|
No air baffle plate (conventional flow with vortex) |
With air baffle plate(siphonic flow,no vortex) |
Water flows along the wall of the main pipe under gravity drainage system. Mostly 1/3 of the pipe is filled by water, and the other 2/3 of the pipe is air |
Conceptually, if there is no air in the pipe and water velocity V2>V1, we can use 1/3 diameter of the conventional pipe to drain the same amount of water. |
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