Dear all,
I'm not familiar at all with pipes' underpinning theory, but I have a request.
If I want to transport seawater:
A) At 2500 litres/second (around 40 000 US gpm) for about 1 km
B) At 45 litres/second (around 700 gpm) for about 100 meter
what are:
1) the most suitable pipe material (and roughness)
2) the most suitable diameter if I want this seawater to flow naturally by gravity (vertical distance between in and out around 1 meter for A) and 5 meters for B))
I can give following data
Fluid: seawater
Temperature:around 15 C
Density: 1030 kg/m3
Kinematic viscosity: 1.05 x 10^-6 m2/s
I need these ASAP
Thank you very much in advance!
Maurizio
SEAWATER PIPES TRASPORT
Re: SEAWATER PIPES TRASPORT
I think that you can solve it easily with calculator at:
http://www.pipeflowcalculations.com/pre ... /index.htm
There you enter flow rate 2500 l/s and other inputs except pressure drop.
Changing pipe diameter and calculating you will have different values for pressure drop. Once you get 1000 mmWS pressure drop than you have the appropriate diameter - which I get 1338 mm for your values - example A.
Pipe roughness is not too important as flow is in regime of hydraulicaly smooth pipe and friction coefficient is not depending on the pipe roughness as boundary layer is thick enough - you have it also in calculator.
Hope this helps.
http://www.pipeflowcalculations.com/pre ... /index.htm
There you enter flow rate 2500 l/s and other inputs except pressure drop.
Changing pipe diameter and calculating you will have different values for pressure drop. Once you get 1000 mmWS pressure drop than you have the appropriate diameter - which I get 1338 mm for your values - example A.
Pipe roughness is not too important as flow is in regime of hydraulicaly smooth pipe and friction coefficient is not depending on the pipe roughness as boundary layer is thick enough - you have it also in calculator.
Hope this helps.
Pipe flow calculations - since 2000