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!
  • Students Click Here

*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


Turbine Design for fire-hose driven shaft.

Turbine Design for fire-hose driven shaft.

Turbine Design for fire-hose driven shaft.

I am working on a design for a water powered drive shaft. The water source would be from a 2.5 inch diameter hose, at approx 75-100 psi. The goal would be to get 55-115 RPM from the shaft and max torque in the smallest possible handheld device. That being said, it seems my best options for driving such a shaft would be a turbine of one of three designs: crossflow vs turgo vs pelton or other... What do you think is the best drive to get these results? A pressure of at least 344 kilopascals (kPa) (75 pounds per square inch (psi)), and a flow rate of at least 300 liters per minute (lpm) (80 gallons per minute (gpm)); So we are talking about .3m^3/m @ about 75 psi. So approx 0.005 m^3/s

RE: Turbine Design for fire-hose driven shaft.

There was a very good paper presented at the International Pump Users Symposium about using a centrifugal pump as a hydraulic turbine. This paper was focused on using these hydraulic turbines for power generation in rural India. I would search the proceedings of the syposium at the Texas A&M Turbomachinery Laboratory site. It was presented several years ago.


Johnny Pellin

RE: Turbine Design for fire-hose driven shaft.

PAT (pump as turbine). So, basically here is where the Physics comes in....

That pressure/flow, 75psi min and 80 gpm min is what is available at the hose/inlet to PAT. What I need out of the PAT is approx 336 in-lb torque or 40 Nm @ 55-115 RPM.... can this be done?

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!


eBook - Efficient and Effective Production Support with 3D Printed Jigs and Fixtures
Jigs and fixtures offer manufacturers a reliable process for delivering accurate, high-quality outcomes, whether for a specific part or feature, or for consistency across multiples of parts. Although the methodologies and materials for producing jigs and fixtures have evolved beyond the conventional metal tooling of years past, their position as a manufacturing staple remains constant due to the benefits they offer. Download Now
Overcoming Cutting Tool Challenges in Aerospace Machining
Aerospace manufacturing has always been on the cutting edge, from materials to production techniques. However, these two aspects of aerospace machining can conflict, as manufacturers strive to maintain machining efficiency with new materials by using new methods and cutting tools. 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