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Steady Flow Energy Equation for a Water Pump

  1. Aug 30, 2015 #1
    1. The problem statement, all variables and given/known data
    I'm not too sure about my attempt to this question, but what is the simplified Steady Flow Energy Equation for a water pump that has one inlet at the bottom and one outlet at the top, and a work input?

    2. Relevant equations
    Q^ = W^ + m^[(h2 - h1) + 1/2 (c22 - c12) + g(z1 - z2)]

    3. The attempt at a solution
    I have attached a picture of my attempt to the solution to this thread. IMG_0474.JPG
     
  2. jcsd
  3. Aug 30, 2015 #2
    Is there a question here?

    Chet
     
  4. Aug 31, 2015 #3
    Yes, my question, as stated already, is

    My attempt to the solution along with the picture of what I'm talking about is attached too...as well as the steady-flow energy equation that I need to be simplified for this particular situation.
    Is my simplification correct? If not, please advise further
     
    Last edited: Aug 31, 2015
  5. Aug 31, 2015 #4
    Yes. It looks like what you did is correct. With regard to the Δh, don't forget to include the Δp/ρ term.

    Chet
     
  6. Aug 31, 2015 #5
    @Chestermiller , okay, but isn't that already included, as h = u + pv ?
     
  7. Aug 31, 2015 #6
    Yes. But some people would have just written Δh=CΔT. Since I don't know you, I was unaware of whether you might make that mistake.

    Chet
     
  8. Aug 31, 2015 #7
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