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Mixing hot air and steam

  1. Nov 10, 2014 #1
    Hi, everyone!

    I have a question: if we quickly fill a cylinder with steam from one end and with hot air from another end, both at atmospheric pressure and equal volume, with hot air 4 times hotter than steam, and then immediately seal that cylinder -- will pressure change as steam and hot air mix together or not? Let's say that cylinder is insulated and no vacuum happens because of external cooling. And what's going to happen with pressure if we admit hot and cold air respectively and let them mix after sealing?..
  2. jcsd
  3. Nov 10, 2014 #2


    User Avatar

    Staff: Mentor

    Welcome to pf!

    Why don't you pick some values and try using a steam table and the ideal gas equation to solve this? I don't think it has a simple answer.
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