Recent content by Woaiyumi

  1. W

    Pressure inside sealed container

    Hi Chet, no, not at all. Your answer posed 20 new questions, some that I didn't completely understand, so I did a little more digging to see if I could find a succinct formula to work out this kind of problem. It seems like such a common scenario to solve! I was not able to find anything more...
  2. W

    Pressure inside sealed container

    I found a formula for calculating "Pressure increase due to thermal expansion of a trapped liquid" at this link: http://www.eng-tips.com/faqs.cfm?fid=1339 Made a quick excel table to play with values. Could quickly see how even a 1 deg C change in temperature (near room temperature) causes an...
  3. W

    Pressure inside sealed container

    Thank you for this tip, I will work on that. One more question. Suppose the water temperature is changing from 20C to 90C. How can I solve for change in pressure, or final pressure, with all other factors the same as above? (Suppose 1L sealed container, 1/3 air, 2/3 water) I very much...
  4. W

    Pressure inside sealed container

    : ) Thank you for the warning. There is a safety valve. It blows when the mixture is anything but 1/3 air to 2/3 water. All air, and the valve opens, all water, the valve opens. I am trying to better understand what is happening inside the container, mathematically.
  5. W

    Pressure inside sealed container

    Interesting, I will look into solving this in that direction. In the real world situation, the water in the container is not changing to gas, so the internal temperature must be lower than 100C.. I was thinking that maybe the pressure was preventing the water from boiling...
  6. W

    Pressure inside sealed container

    Hi all : ) I have a basic physics question: Let's say I have a sealed metal cylinder with a volume of 1L. It contains 1/3 air and 2/3 water. I heat the container from 20C to 140C. How can I determine the change in pressure or final pressure? I guess I can calculate the pressure change of the...
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