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Old Aug 6th 2017, 02:50 AM   #1
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Vacuum evaporation

Hi, pondering what would occur in a sealed evacuated system containing water, when having a 20,320 micron vacuum and temperature above 22.22 degrees Celsius the water should evaporate/boil, what would happen over time in the sealed system, is it possible for the boiling process to go on for a longer/indefinite period of time provided temperature of 22.2 is available? Does the boiling process have an impact on the vacuum level?
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Old Aug 6th 2017, 05:34 AM   #2
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Originally Posted by Jens737 View Post
.... 20,320 micron vacuum and temperature above 22.22 degrees C...
1000 microns = 1mm Hg vapour pressure water @22.22 is 20320

So ...you specified a sealed container with free liquid water , water vapour ,no air .....

As the temperature is evenly raised , more water would boil, becoming water vapour ,and increasing the pressure , to the level of the Vapour pressure of water at that temp...

If you raised it to100C the pressure would be one atmosphere , assuming there was enough liquid water in the container to start with...
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