Db, it isn’t cynical if it’s true.
George, excellent explanation, but allow me to suggest it be reworded to say that the heat in the passenger compartment is transferred BY the heat exchanger to the expanded, cooler refrigerant in the AC system. The refrigerant is then recompressed, and the heat from the passenger cabin along with the heat created by compressing the refrigerant is then transferred by the heat exchanger under the hood to the ambient air. The cooled refrigerant is then expanded to drop its temperature and sent back to the passenger cabin heat exchanger to once again absorb the cabin heat.
Its principle is simple. It relies on the principle that expanded matter absorbs heat (it’s cold) and by removing the heat from the compressed refrigerant (matter heats up when compressed) and then expanding (chilling) it, it will by using a heat exchanger absorb the heat energy from the cabin.
It might help readers to understand that cold does not travel, heat does, “heat” being a measurement of atomic activity. For me that helps to understand the process of heat being transferred from the cabin to the refrigerant and the refrigerant to the outside air. That helps clarify the entire process. Cold isn’t added to the cabin air, heat is removed.