Phase Change Processes of Water ?


compressed liquid or subcooled liquid ?
The meaning of compressed liquid or subcooled liquid is water exists in liquid phase, or it is not about to vaporize.

saturated liquid ?
If any heat is transferred to water, until it reaches 100oC ( P = 1 atm), at this point water is still in liquid phase, but any heat addition is transferred to ­­­water will cause some of the liquid to vaporize. A liquid that is about to vaporize is called a saturated liquid

saturated vapor ?
As we continue transferring heat, the vaporization process continues until the last drop of liquid is vaporized. At this point, the entire liquid is turn into vapor. Any heat loss from this vapor will cause some of the vapor to condense. A vapor that is about to condense is called a saturated vapor.

saturated mixture ?
This condition exists when vaporization proceed, the liquid and vapor phases coexist in equilibrium.

superheated vapor ?
if we transfer some heat from the vapor, the temperature may drop somewhat but no condensation will take place, a vapor that is not about to condense (i.e., not a saturated vapor) is called a superheated vapor.

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