how does an air condioner work?

Question

refrigeration and air conditioning

Answer 1

There are 4 basic parts: the refrigeration fluid, two 'radiators' and a compressor. It is also assumed that there is a "cold" side and a "hot" side separated by some insulating material.

Let's start with the fluid as it gets compressed. Energy is added to the fluid by the compression action, so it heats up. the fluid passes to the radiator on the hot side, but because it is hotter than the surrounding atmosphere (even when it's 100 degrees outside) heat is transferred from the radiator to the outside (hot side), so the fluid cools.

The fluid then passes through a check valve into an expansion tube, where it expands and by that action cools *way* down. It is now very cold. The cold fluid passes through another radiator ( which may be part of the expansion) on the cold side (inside), where heat from the room (or automobile interior) moves to heat up the cold fluid. The now warmer fluid passes back to the compressor, and the cycle starts over.

Heat is transferred from the cold side to the hot side.
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Answer 2

As I am still an engineering student, I would like to protest anything thermodynamic and completely deny its existence.

I support the Entropic death of the universe immediately.