Ask any of your friends what refrigeration is all about, and you are likely to get many interesting and widely varied answers. For some refrigeration has to do with keeping things cold. For some it has to do with keeping things frozen. And for others its just a necessary evil - with an outside impact on utility bills!.
What if I told you that refrigeration is actually all about heat? Keeping things cold or frozen is the subjective end goal, but the process is actually just moving heat from one "place" to another. From a scientific point of view, this whole topic would be termed thermodynamics - but lets keep things simple and understandable for the purposes of this discussion.