Why do we use energy to remove energy from rooms?

Question

I’m talking about air conditioning. Why can’t we just use the ambient energy to move the excess energy out of the room somehow?

In: Engineering

Answer 1

The only reason energy will leave a room is if there’s less of it in another (hot inside and cold outside for instance) and it’s balancing itself out. The same is true for fluids, like water and air. So if we want to move it we need to do something. And no matter what that something is, it’s going to take energy to do.