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Trying to find thermodynamic equations/properties for SteamTurbine/Condenser/pump/etc

  1. Oct 20, 2008 #1
    I am looking for a table or resource of any kind that can break down properties for me for different devices such as Steam Turbines, Pumps, Nozzles, Diffusers, Throttle, Condenser, Heat Exchanger, etc.

    Basically like for a pump it would be

    1inlet
    1exit

    Mi=Me(constant mass flow)

    de/dt = q - w + sum(Mi)(u) - sum(Me)(u)
    which would show that w = hi-he

    then

    dS/dt = 0+0+0+Mi(si)-Me(se) +0 (reversible process)

    Si = Se

    inlet state is compressed liquid, exit state is compressed liquid, typical efficiencies for a pump.

    like that kind of thing...trying to get a complition cause im working with this book and its confusing and everything is all over the place :(
     
  2. jcsd
  3. Oct 20, 2008 #2

    russ_watters

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    Staff: Mentor

    Re: Trying to find thermodynamic equations/properties for SteamTurbine/Condenser/pump

    This information is specific to the particular piece of equipment. You'd have to look at a manufacturer's catalog or use selection software.
     
  4. Oct 20, 2008 #3
    Re: Trying to find thermodynamic equations/properties for SteamTurbine/Condenser/pump

    Are you looking for properties of the 'devices'? Or of the substances that will be used in the devices? Enthalpy and entropy are properties of substances and not devices as far as I know. But, maybe I am mistaken.

    Casey
     
  5. Oct 21, 2008 #4
    Re: Trying to find thermodynamic equations/properties for SteamTurbine/Condenser/pump

    What you want is to learn chemical process engineering in 1 simple step. I'm afraid that it's not all that simple...

    (Almost) all of these devices have "ideal situation" equations... but those almost all again depend on the mode of operation (are you having a gas, liquid?... is it boiling?... is it turbulent?... any solids present (in suspension) perhaps?)

    Power of a (liquid) pump: P = g*flow*dh
    Power of a gas pump is different... and I'm not in the mood to explain. Anyway, it's not even called a pump... it's a compressor.
    The efficiency of the pump (and of the engine powering it) is indeed something that you must ask a manufacturer.

    It would really help a lot if you are a lot more specific, so we can focus on just one case and explain that. Now you are asking us to explain you all there is. And all I could do is refer to something massive as "Perry's Handbook". It is definitely "a table or resource", but in fact, it's well over 3000 pages of it... :tongue2:
     
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