Heat Energy Removed: Latent Heat of Sublimation/Fusion

[bwd111]

What is the heat energy removed from a liquid when vapor is no longer present. This has been bugging me all day. I was thinking latent heat of sublimation cause ice seems to just melt in a ice machine due to door opening and closing and heat from air . Next guess was latent heat of fusion

 

[mathman]

You need to better describe the scenario you are thinking about. In general if something is warmer than its surroundings it will lose heat.

 

[bwd111]

True so It would be subcooling . Sublimation is the process of ice becoming water vapor without first going through a liquid stage.

Subcooling is reducing the temperature of a liquid below its boiling point. If you have water sitting in a pan on the stove in your house, it is subcooled liquid water. It is below 212°F.
Subcooling...latent heat of fusion relates to melting/freezing point, condensing/boiling relate to latent heat of vaporization and sublimation is a direct change of state from solid to vapor.

 

[256bits]

What is the heat energy removed from a liquid when vapor is no longer present.

As mathman has asked, what condition do you have where there is no vapour present and only liquid.
For example, water in a pipe has no vapor present, and heat would be exchanged through the pipe walls via conduction, and perhaps convection, to the surroundings.

 

[bwd111]

As mathman has asked, what condition do you have where there is no vapour present and only liquid.
For example, water in a pipe has no vapor present, and heat would be exchanged through the pipe walls via conduction, and perhaps convection, to the surroundings.

In an ac system condenser