Superheat And Subcooling Made Simple  January 11, 2004 The
purpose of this article is to provide a simple explanation of
these terms for those who desire a concise understanding as well
as a review for those who understand the terms but want to take
another look. An understanding of these terms and the concepts
related to them is essential to understanding the air
conditioning and refrigeration mechanical-refrigerant cycle as
well as being necessary to troubleshooting problems.  Norm
Christopherson   Most materials can exist in three forms:
solids, liquids, and gases. Water is a common example. Water can
exist as a solid (ice), a liquid, or a gas or vapor (steam).
Only a gas or vapor (these are interchangeable terms) can be
superheated. Let's use water as an example as we explain these
terms.  Water at sea level boils at 212 degrees F. When heated
to 212 degrees F, the molecules that make up water are moving at
a high enough speed that they overcome the air pressure above
the water. As additional heat is adde