How much does the pipe diameter affect pressure?
Thread Content
Dear teachers, I now have a device whose working medium is tap water. The pipes used inside are 1-inch PPR pipes; after that, a 4-inch flow meter is connected, then the pipe size returns to 1 inch again, followed by a 4-inch pressure regulator. Once more, it’s a 1-inch pipe, and finally, a 4-inch corner valve is connected at the end. The total length is about three meters. What I want to ask is: the pipe diameter changes from 1 inch to 4 fractions, then back to 1 inch, then to 4 fractions again, and then back to 1 inch and 4 fractions once more. To what extent does such a structure affect the water pressure? For example, will the water pressure at the outlet be lower, and by how much? I ask for the teachers’ guidance!
The pressure drop will not exceed 0.5 bar.
It will definitely get smaller; exactly how much it will shrink requires calculation, and this is mainly due to local friction losses.