Why do refigerators heat up so much on the outside?

Question

I understand all the cooling liquid and whatnot but what makes the fridge hear up from the outside? Also for freezers.

In: 0

Answer 1

You know that refrigerators work by pumping a fluid back and forth from the inside to the outside. What you might not know is that pumping doesn’t juts move the fluid, it’s changes it’s temperature. As the fluid is pumped *into* the fridge the pumping cools it down. Inside the fridge the fluid wants to warm up so it sucks up heat from the food and stuff and then it gets pumped back outside. This time the pumping *heats* the fluid up a lot. So now the opposite happens, outside the fridge the fluid is really, really hot and it gives that heat off to the room, that’s the heat you’re feeling outside the fridge. Eventually the fluid returns to room temperature and then gets pumped back inside the fridge (and becomes cold as it does so, etc.)