×
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

Pumps as mini hydros

Pumps as mini hydros

Pumps as mini hydros

(OP)
We are looking at using pumps as small turbines in an effort to reduce the cost of small turbine installations (30-100kW). Does anyone have any experience with the use of pumps in this application.


Thanks,

RE: Pumps as mini hydros

I can't imagine a hydraulic pump or motor operating at the low pressure I think you are dealing with. Usually these pumps or motors require 50-200 PSI to overcome internal friction when new and don't go much lower until they wear out.

I saw a turbine type motor at a Grist Mill in Tennessee driving the mill operations. It was operating on water that was coming from a pipe fed by a water source about 150 feet above its inlet. As I remember it was only about 15" diameter. Looked similar to a centrifugal water pump.

Bud Trinkel CFPE
HYDRA-PNEU CONSULTING, INC.
fluidpower1 @ hotmail.com
http://www.fluidpower1.us

RE: Pumps as mini hydros


From my readings in the "energy crisis" 1970s

Centrifugal pumps of suitable pressure and flow work at quite high efficiencies when working in "reverse".

Search "microhydro"

Nice nomograph here to get you started

http://www.windstreampower.com/microhydro/nomograph.html


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

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close