Pushing water up hill

[billybongo]

Could one of you clever bods tell me how you calculate pushing water upwards.
Ie what pressure would you need to push water 10 meters up into a tank from say a six inch water main . cheers mark

 

[GQuigley67]

you would need to find out what downward force gravity has on the water, and then find out how much pressure you need to overcome that force to push it up into the tank. This could be done with a little bit of research.

 

[stevetheplumber]

use a 11metre head pump?

 

[stevetheplumber]

water give roughly 1psi for every 2 foot of drop so i would asume you need the same amount of preasure to raise it
10m =33 ft so 17psi
and back to metric 1.2 bar

 

[billybongo]

Not allowed to use a pump , its local authority supply to private tank and apparently you cant pump there supply ? cheers mark

 

[ecowarm]

Looks like you need to have a break tank at ground level and then pumped to the top tank

 

[Plumbstar Tom]

is it 10 meters = 1 bar?

The same as head from a header tank

This assumes Gravity at 10 m/s2

Its been a while since Physics!

 

[leelister6]

In fire brigade we used to add 1 bar for every 10m vertically and 0.1bar for every 10m horizontally to get required pressure at branch if I remember correctly

 

[GQuigley67]

so in order to get the water up to the tank at 1 bar you'd need to pump 2 bar at least ?

 

[leelister6]

As far as I can remember, yes

 

[Nat]

Unless you are in a particularly low pressure area you should easily get enough mains pressure to get the water up 10 metres. Anything above a bar will do this.6 inch main?! Are you sure? Size of the main doesn't matter anyway.

 

[justlead1]

Hi. To do calculations more information needs to be known. Litres per second, pipe size, length of pipe. This can be used to calculate the head required

 

[kay-jay]

whats wrong with a bucket and a pulley? :joker:

 

[tackleburger]

2bar 22mm pipe will be sufficient to supply a tank at that height.

 

[billybongo]

Thanks for your interest, I am just trying to second guess some project engineers where I work , it's a possible water supply from Anglian water apparently 12 inch into site running in 6 or 8 inch for approx quarter of a mile to a large braithewate tank 200 cubic metres approx. The in coming main is max 3 bar and can be to the minimum which is around 1.7 bar . So my interest was would this pressure be enough . Cheers Mark

 

[justlead1]

hi. Taking the average @ 2.35 bar (23.5 metres head) and 150 mm pipe over 400 m the discharge would be around 43 litres a second. If you minus the 10 m head (rise in ground perhaps) Discharge 32 L/s This is a rough calculation using boxes formula. Full bore discharge, no doubt there will be a ball valve at the cistern end, or some type of water level controlled valve. Which effects the volume of discharge.