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Homework Help: Airflow and Preassure

  1. Dec 2, 2016 #1
    1. The problem statement, all variables and given/known data
    Engine needs airflow of 1 m3/min (std. p=101.325kPa, T=293.15K) it is suplied by machine working at p=700kPa.

    2. Relevant equations
    How big flow is requied from the machine to supply engine with air?

    3. The attempt at a solution
    Tryed using ideal gas law pV=nRT
    1) I found out n, using n=(pV)/(RT)=(101,325*1)/(8,314*293,15)=0,04157
    2)I used 2nd preasure to add to to eq. V2=(nRT)/p=(0,04157*8,314*293,15)/700=0,14475m3/min

    Have no way to check if that is correct or not.
    Last edited: Dec 2, 2016
  2. jcsd
  3. Dec 2, 2016 #2
    You must show some attempt. Tell us what you know. This must be relevant to something you are learning in a textbook.
  4. Dec 2, 2016 #3
    hope that will do, I honestly dont know tho
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