PDA

View Full Version : Waterflow in plastic tube







Peter_1
21-04-2004, 04:38 PM
One of our techs asked me today if it's possible to calculate the waterflow (15C entering) through a plastic pipe of 8 mm OD - 6 mm ID (or +/- 1/4 inch ID)with a DP of 3 bar over it and a lenght of 1 m and 5 m.

A practical test could of course tell it straight away but how can it be calculated?

Peter

I haven't post in under industrial cooling :D

chemi-cool
21-04-2004, 06:05 PM
plastic is a big word peter.

what is the material the plastic pipe is made of?

is it polypropilene, polybutilene or what?

they all have different conditional flow.
at this diameter, they are usualy made for compressed air so I doubt if you can find an answer.

chemi

Peter_1
22-04-2004, 09:22 AM
I know Chemi, I think that Reynolds (both for liquid and plastic tubes) comes around the corner for this kind of equations.

But it was justa theoretical question because you can measure it in some minutes via a practical test.

shogun7
23-04-2004, 01:09 AM
Should be about 9.5 GPM if pressure is constant