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A closed system containing a gas is to undergo a reversible process

  1. Apr 8, 2012 #1
    1. The problem statement, all variables and given/known data
    A closed system containing a gas is to undergo a reversible process from an intial specific volume of 2 ft^3/lbm and a intial pressure of 100 psia. The final pressure is 500 psia. Compute the work done per unit mass.

    a. Pv= constant
    b. pv^-2 = constant


    2. Relevant equations
    (1) p2/p1 = (v1/v2)^k

    w = ∫Pdv



    3. The attempt at a solution

    Using equation (1) I solved for v2, w = ∫Pdv, but p is not constant, so i don't know how to find the work. Maybe step one is wrong, but I have the final answer = -59.6 Btu/lbm

    Thanks!
     
    Last edited: Apr 8, 2012
  2. jcsd
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