A fan blows into a container that contains ice. There is a hole/vent where the air comes out from. The air that comes out is cold. This is a mini do-it-yourself air conditioner. A battery attached to the side of the container powers the fan.

Describe in thermodynamic terms how does this do-it-yourself air conditioner works?

How could you improve this air conditioner in terms of energy consumption and efficiency? give 3 examples