1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Efficiency of Ejector as pump

  1. Feb 23, 2010 #1
    Efficiency of Ejector "as pump"

    I was asked to find the efficiency of a steam ejector experiment "as a pump". So I tried the formula :

    [(m(P/density + V^2/2))discharge - (m(P/density + V^2/2))suction]/
    (m(P/density + V^2/2))steam inlet.

    I am getting an efficiency of 0.5%.

    Is this a reasonable result or am I approaching this wrong?

  2. jcsd
  3. Nov 7, 2010 #2
    Re: Efficiency of Ejector "as pump"

    Hi, I am interested in these pumps but I have no idea what kind of pressure/flow ratios they can get. Can you please tell me for what measured values you got for 0.5% efficiency?

  4. Jul 25, 2012 #3
    Re: Efficiency of Ejector "as pump"

    I don't think your formula is suitable,you can read the paper 《An investigation of ejector design by analysis and experiment》,which can be down load from http://ejector.getbbs.com/ [Broken]
    Last edited by a moderator: May 6, 2017
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Efficiency Ejector pump Date
Car randament (engine efficiency) Feb 17, 2018
Percent power and Efficiency Nov 28, 2017
Multiple rotors on a wind turbine Aug 25, 2017
Efficiency, Loss...is there a more specific term? Apr 3, 2017
Air Ejector Condenser.. Aug 29, 2015