Why Does Water Boil at 155°C Under 600 psi Pressure?

AI Thread Summary
Water should boil at approximately 252°C under 600 psi pressure, but the user is experiencing boiling or evaporation at only 155°C. The chamber contains small drops of water (100 mg max) and is purging CO2, which may affect the boiling process. The discussion suggests that the low amount of water and the large chamber size could lead to rapid evaporation rather than boiling. Additionally, the vapor pressure of steam at 155°C is 80 psi, indicating that the conditions may not support boiling at that temperature. Understanding Dalton's Law and the properties of water under pressure may clarify the observed behavior.
abhipatel
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Boiling Point H20 @ 600 psi?

According to the psychometric chart boiling point of water @ 600 psi is 252 C.

I have a chamber with water inside (in forms of weight measured drops). I am purging CO2 at 600 psi in the chamber. After am heating the chamber to 155 deg C expecting the water to stay.

It boils or just goes away - I have no idea why it is happening?

Could anyone please explain what are the potential reasons that could be happening?
 
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I think just evaporating because I can't see it boiling...The chamber size is quite big...and water measured would be like 100 mg max.
 


You might want to review Dalton's Law.
 

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