Difference Between Conduction Convection and Radiation

The physical act of the transfer of thermal energy between two between two systems by the dissipation of heat is known as heat transfer. The three modes of heat transfer are conduction, convection and radiation. Let us look at the differences between all the three heat transfer methods to understand them better.

Difference Between Conduction Convection and Radiation

Conduction

Convection

Radiation

In conduction, the heat transfer takes place between objects by direct contact.

In convection, the heat transfer takes within the fluid.

In radiation, the heat transfer occurs through electromagnetic waves without involving particles.

The heat transfer takes place due to the difference in temperature.

The heat transfer occurs due to the difference in density.

The heat transfer occurs in all object with temperature greater than 0 K.

The heat transfer in conduction is slow

The heat transfer in convection is faster.

The heat transfer in radiation is fastest.

The heat transfer occurs through a heated solid object.

The heat transfer occurs through intermediate objects. For example, heat transfer between air and water.

The heat transfer occurs through electromagnetic waves.

It does not follow the law of reflection and refraction.

It does not follow the law of reflection and refraction.

It follows the law of reflection and refraction.

The difference between between the modes of heat transfer should be understood clearly as these are an important topic in thermodynamics. To Know more about conduction, convection and radiation Visit BYJU’S.


Practise This Question

You are riding in an automobile of mass 3000 kg. Assuming that you are examining the oscillation characteristics of its suspension system, the suspension hangs 15 cm when the entire automobile is placed on it. Also, the amplitude of oscillation decreases by 50% during one complete oscillation. The values of the spring constant k and the damping constant b for the spring and shock absorber system of one wheel (assuming that each wheel supports 750 kg) are: