Question

explain the principle of heat exchange

Answer 1

Heat is transferred to and from object by three process : conduction, radiation, and convection.
Conduction is the heat traveling through a solid material.

Radiation traveling heat in the form of visible and non visible light.

Convection is the another type of heat traveling in the form of gases.

Answer 2

The Principle of heat exchange is "the heat lost by the hot body = the gained by the cold body".

Explanation:

The Principle of heat exchange is "the heat lost by the hot body = the gained by the cold body".

• The hot and cold objects present in the surrounding continue to exchange heat until there is a thermal equilibrium attained between the objects.
• The principle of "Heat lost by the hot body is equal to the heat gained by the cold body".
• When objects of opposing temperatures are kept in contact they absorb the temperature of the other object to reach a equilibrium (it is a state of balance among two opposite extremes).
• There will no more be an exchange if the objects are separated.