Super heat may be described as the amount of heat added to the refrigerant after it has done what?

Superheat refers to the additional heat that is added to a refrigerant after it has evaporated. When refrigerant absorbs heat during its phase change from liquid to vapor in the evaporator, it eventually completes this transformation. After all liquid refrigerant has turned into vapor, any further heat added to the refrigerant is termed superheat. This additional heat raises the temperature of the vapor without increasing its pressure, which is essential for ensuring the refrigerant is completely vaporized before entering the compressor. This prevents potential liquid slugging in the compressor, improving system efficiency and longevity.

In contrast, the other options refer to processes where the refrigerant is either in different states of matter or undergoing transformations that don't involve the addition of heat after full evaporation.