×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

(OP)
A simple pump that lifts 1,178 gallons per lever stroke. I ask this question because the bottom chamber has a larger diameter than the cylinder it's pumping water up into.(PHOTO) The math makes sence on a seesaw drawing but I'm unsure with this pump due to the different sized cylinders as friction will occur.

The lever is 80 ft long with 620(lb) load at the very end. The other end of the FULCRUM is 10ft long.

At this end is the pump rod & the piston in the bottom chamber needing to lift approximately 1,178 gallons (which is the amount of water in the well. = 9,810(lb). Here's the math with a drawn photo of the pump.

Bottom chamber = 24inch PIPE 5ft High. = 15.7 ft(3) or 118 gallons. =980(lb)

Smaller chamber is half the diameter. = 12 inch PIPE 180ft High = 141ft(3) or 1,060 gallons. =8,830(lb)

Together a total of = 9,810 (lb) must be lifted.

Lever is 10ft by (FULCRUM) 80ft long. With a 620(lb) load at the very end.

Again on,a seesaw this would work but will this pump work even though there will be friction from the different cylinder sizes? Thanks!

RE: Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

I might of missed something but I cant see how that would work, there isn't enough force at the 80ft end.

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

RE: Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

This drawing is not a credible thing.

The 24" pipe is drawn flat, not vertical. how can a 24" pipe be 5 feet high??

You don't have enough force to lift your water column

There are no valves to stop the column going down.

Each lift action will only lift a small fraction of your 1100 odd gallons at time.

what is this thing??

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

Keith Cress
kcress - http://www.flaminsystems.com

RE: Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

(OP)
I'm sorry guys. It was actually a 160ft lever not an 80ft lever. At 160ft with that load on a seesaw will be more than equalibrium to lift the other load.

RE: Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

(OP)
Also LittleInch it's 24inch diameter pipe that's 5ft in height. I know that little friction will occur if the well was exactly the same size and it will pump. I ask the question because the 2 cylinders in this drawing are of different dimensions.

RE: Will a pump work with the added friction due to different cylinder dimensions?(Math&Photo) below

(OP)
With the same loads just different dimensions of the well will it still pump due to the added friction? From a wide cylinder to a smaller but longer cylinder. Disregard the pump flaws (like the missing valves) because this is just a drawing.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now