Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Impulse reaction turbine?

  1. Apr 21, 2014 #1
    I have seen modern steam turbines with velocity compounding, they start with impulse stage then reaction stages,can any one tell me, why There is a impulse stage first,why not a reaction stage first???
     
  2. jcsd
  3. Apr 21, 2014 #2

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    When steam is first admitted into the turbine casing, it is traveling at relatively low velocity. The impulse stages are placed first on the turbine rotor so that the steam expanding thru them will increase in velocity, after which reaction stages can be used to take advantage of the now faster flowing steam.
     
  4. Apr 22, 2014 #3
    Doesn't nozzle drop steam pressure and increase its velocity upto super sonic level?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Impulse reaction turbine?
  1. Savonius turbine (Replies: 4)

Loading...