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Self Heating Can of Soup

What?

Self-heating cans have dual chambers, one surrounding the other.

The chemicals are in the inner chamber and the beverage surrounds it in the outer chamber. When the user wants to heat the contents of the can, they push on the bottom of the can to break the barrier separating the water from the chemicals.

How?

The source of the heat for the self-heated can is an exothermic reaction that the user initiates by pressing on the bottom of the can. The can is manufactured as three containers. A container for the beverage surrounds a container of the heating agent separated from a container of water by a thin breakable membrane. When the user pushes on the bottom of the can, a rod pierces the membrane, allowing the water and heating agent to mix. The resulting reaction releases heat thus warms the beverage surrounding it.

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