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Steam temps at altitude

SeanBeans Member Posts: 520
Can anyone point me to a quick table showing the relationship between steam pressure and temperature at one mile above sea level?


  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,565
  • Zman
    Zman Member Posts: 7,605
    @DanHolohan That is a good one, I'll save it to the library.
    @SeanBeans Here are a few more. The air density chart will keep you out of trouble running the numbers for forced air heating an cooling. The gas deration is a must if you size gas lines or clock gas meters.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • Keith M
    Keith M Member Posts: 78
    I was taught to use "absolute" pressure when using steam tables. Here are ambient pressures at various altitudes.
    Sea Level = 14.7 PSI
    5000 feet = 12.2 PSI
    6000 feet = 11.8 PSI
    7000 feet = 11.3 PSI
    8000 feet = 10.9 PSI
    9000 feet = 10.5 PSI
    10000 feet = 10.1 PSI
    Read you "gauge" pressure for steam and add the "ambient" pressure to arrive at your "absolute" pressure. Then read your steam table using the "absolute" pressure.
    Also attached is approximate water temperatures at different altitudes above sea level.
    Interesting stuff.
    I hope this helps.

  • SeanBeans
    SeanBeans Member Posts: 520
    edited May 2019
    Was standing in front of 30-110psi..was a bit unnerving.

    Steam kettles were sitting at 30 and pressure reliefs were rated at 35