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

[abhipatel]

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?

 

[russ_watters]

Is it boiling or just evaporating? How big are the drops and how big is the chamber? According to a steam table, the vapor pressure of steam at that temp is 80psi and the density is 0.2 lb/ft^3. http://www.efunda.com/Materials/water/steamtable_sat.cfm

 

[abhipatel]

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.

 

[Bystander]

You might want to review Dalton's Law.