×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

Jobs

Cavitation increase power consumption??

Cavitation increase power consumption??

Cavitation increase power consumption??

(OP)
when troublshooting a pump stop, I heard somebody saying that the increase of power consumption was due to cavitation. Is it reasonable to think so??

RE: Cavitation increase power consumption??


One reason I can think of, for a centrifugal pump otherwise working properly to consume too much power is when the pump operates too far out on its head-capacity curve, necessitating a higher NPSH, and as concurrent result starts cavitating at the so-called cutoff capacity.

RE: Cavitation increase power consumption??

cavitation limits the discharge flow of the pump.
first indication of cavitation is a drop in efficiency, even before other signs are present - e.g. noise. (karassik)

in radial pumps (low Specific speed) cavitation may be detected as a drop in power consumption (HP curve rises with  increasing flow)

in axial pumps (high  specific speed) cavitation may be detected as an increase in power consumption (HP curve rises with decreasing flow)
 

saludos.
a.

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!


Resources