Hi paul, Thanks for your help There is lots of parameters required to design a pipe, I hadn't thought about that. I can give you only some parameters. 1.Material:mild steel 2.Water is being pumped up to to 6 m hieght through a 7  meter long pipe. 3.Pump type( filter feed pump). Centrifugal. 4.4.It a industrial wastwater treatment plant. 5.Rest of the parameters you can consider. And please share with me the procedure of doing all calculation. Thanks again Regards MOHD ARSHAD

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Hi paul,

Thanks for your help

There is lots of parameters required to design a pipe, I hadn't thought about that.

I can give you only some parameters.

1.Material:mild steel

2.Water is being pumped up to to 6 m hieght through a 7  meter long pipe.

3.Pump type( filter feed pump). Centrifugal.

4.4.It a industrial wastwater treatment plant.

5.Rest of the parameters you can consider.

And please share with me the procedure of doing all calculation.

Thanks again

Regards

MOHD ARSHAD

1 Comment

Hi Mohd, so sorry about the late reply, i didn't realise you had replied to my answer.

 

I can tell you that in irrigation (PVC) mainlines we use a maximum velocity of 1.5m/s. This is for two main reasons: 1. To reduce the risk of water hammer, and 2. To reduce any excessive friction loss in the pipe (because of increased pumping cost).

In steel pipework however, I  go up to a maximum of 2.2m/s because the pipe is generally going to handle any water hammer issues better than PVC.

Unfortunately, with your system we don't have any pressures (pump/pipe discharge) to work with so I can't really give you an estimate of size. If we knew the pressure differences between the pump and the discharge then we could calculate the headloss through the length of pipe and find a size.

Obviously there would be a drop of 60kPa (if a static lift of 6.0m) because of the height, but this isn't anything to do with friction. I'm sorry that I can't be of any more help to you Mohd.

Paul.

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