Why Do Ice Boxes Work?

Portable coolers stay cold with the magic of insulation and ice. The insulation, which is usually made from foam or plastic, lines the inside of your cooler, slowing down the circulation of warm air. The ice, meanwhile, keeps the inside of your cooler nice and chilly.

How did ice boxes stay cold?

Portable coolers stay cold with the magic of insulation and ice. ... The insulation inside the cooler slows down the warm air through a process called convection. If you didn't pay attention in science class, this is when hot air travels around a space and increases the temperature.

How does an ice box works?

A large block of ice is held in a tray or compartment near the top of the box. Cold air circulates down and around storage compartments in the lower section. ... The user has to replenish the melted ice, normally by obtaining new ice from an iceman.