Go Back   Physics Help Forum > High School and Pre-University Physics Help > Thermodynamics and Fluid Mechanics

Thermodynamics and Fluid Mechanics Thermodynamics and Fluid Mechanics Physics Help Forum

Like Tree1Likes
  • 1 Post By oz93666
LinkBack Thread Tools Display Modes
Old Jun 17th 2017, 04:53 PM   #1
Junior Member
Join Date: Jun 2017
Posts: 2
How to calculate the conditions for water suction using pressure difference.

I want to make a container with a low pressure inside it to pull water from a reservoir upward using a pipe,
How do I decide on the height, the required pressure difference and the relevant flow rate?
Usama1034 is offline   Reply With Quote
Old Jun 18th 2017, 12:41 AM   #2
Senior Member
Join Date: Apr 2017
Posts: 403
So ...you have a sealed container connected to a reservoir. The reservoir is at a lower height . A pipe exits the bottom of the container and connects to the reservoir . An air pipe exits the top of the container , you want to pump out the air and suck water into the container ...

One atmosphere of air pressure is equivalent to 10 meters of water height , if the reservoir is more than 10 meters below the container ,you can't do it ... up to 10 meters lower you could , with a good vacuum pump.

Rate of flow is dependent on pipe diameter and length.

A hydraulic ramp pump might be a better idea .Powered by the pressure in the reservoir it can raise some water to a greater height , at the cost of transferring a greater quantity to lower than the reservoir height.
kavinmathi likes this.
oz93666 is offline   Reply With Quote

  Physics Help Forum > High School and Pre-University Physics Help > Thermodynamics and Fluid Mechanics

calculate, conditions, difference, fluid mechanics, pressure, pressure difference, pump, suction, vacuum, water

Thread Tools
Display Modes

Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
pressure difference at concave side of bubble ling233 Advanced Mechanics 6 Feb 21st 2016 10:42 AM
How to calculate pressure in a pipeline? Konradktm Thermodynamics and Fluid Mechanics 3 Oct 2nd 2015 10:56 AM
Drag force coefficient difference in water and air greenBird Thermodynamics and Fluid Mechanics 7 Jan 19th 2014 09:57 AM
How to calculate fluid rise rate and Ra during convection due to density difference? zzyzzxs Thermodynamics and Fluid Mechanics 0 Jul 7th 2013 05:20 PM
Calculate pressure arze Thermodynamics and Fluid Mechanics 6 Feb 15th 2010 08:59 PM

Facebook Twitter Google+ RSS Feed