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Thermodynamic problem, need help.

  1. Apr 17, 2008 #1
    1. The problem statement, all variables and given/known data

    An air-conditioning system is to be filled from a rigid container that initially contains 5 kg of liquid R-134a at 24 degrees Celsius . The valve connecting this container to the air-conditioning system is now opened until the mass in the container is .25 kg, at which time the valve is closed. During this time, only liquid R-134a flows from the container. Presuming that the process is isothermal while the valve is open, determine the final quality of the R-134a in the container and the total heat transfer. (Answers: 0.506, 22.6 KJ)

    If someone could show me how to work this problem, I am having a hard time understanding it.
  2. jcsd
  3. Apr 25, 2008 #2
    Nobody's going to just do your homework for you. Push in the right direction: problem relates to quality, so you need vapor dome tables.
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