1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: M*P(v2-v1) because pressure is constant

  1. Sep 29, 2008 #1
    1. The problem statement, all variables and given/known data

    HI I have a couple of questions pertain to the sample test 1 could you please help me ?
    I am working on problem 3 .

    This is what I got so far.

    I know that the boundary work will be M*P(v2-v1)
    because pressure is constant .

    OK, so they give me pressure 150 psi
    and X=.8 SM. Therefore I can find my V/me =2.4156 ft ^3/lbm
    Therefore I can find my mass =V/(V/m)= 4.13976 lbm
    Now I am to go to state 2 where pressure = 150 psi and I am a saturated vapor therefore I need to take the value of vg on my table =3.0150 ft^3/lbm.

    NOW this is where the confusion comes in is my final temp tsat because I am still in a mixture ????? How do I find final temp?

    Please help......

    2. Relevant equations

    3. The attempt at a solution

    Attached Files:

  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted