Question

Why do we use aluminium foil to pack hot food if aluminium is conductor of heat.

Answer 1

Answer:

Hot food radiates heat out into the room, and as moisture evaporates off the surface of the food, it carries heat with it. Aluminum foil reduces both of these effects. It has very low emissivity, and so lets relatively little radiation out, and it traps most of the moisture inside, reducing the rate of evaporation.

Answer 2

Explanation:

• Hot food radiates heat out into the room, and as moisture evaporates off the surface of the food, it carries heat with it. Aluminum foil reduces both of these effects. It has very low emissivity, and so lets relatively little radiation out, and it traps most of the moisture inside, reducing the rate of evaporation.