Quote:
Originally posted by bigben2k
LN2 is not a refrigerant, nor does it have endothermic capabilities.
|
N2 can be a refrigerant... Not quite a good one but it can be.
Quote:
In short, refrigerants have this unique ability to do the opposite of what most substances do: get hot when compressed from gas to liquid.
|
Oopsie
I hope you didnt check what you just typed.
A basic law of physics wants that *any* material takes heat when 'boiling' and gives back heat when 'solidifying'.
*any* means EVERYHTING from hydorgen to plutonium, including N2, H2O, toilet paper or spraycan paint.
"Takes heat " means the outside "gets cold"
"gives back heat" means the outside "gets hot"
The amount of heat given or taken depends on a fixed number which is specific to the material. Its called "specific heat".
The spec. heat of "common" refrigerants is just average but their main interest is a boiling point between -30°C and -5°C.