Question

Characterstics of conduction, convection, Radiation

Answer 1

● Conduction :-

◆ It takes place in a solid medium only.
◆ It is a slow process.
◆ Heat transfer in conduction process can be in any direction.

● Convection :-

◆ It needs a liquid / gaseous medium.
◆ It is faster than conduction
◆ Heat transfer is vertically upwards.

pp ● Radiation :-

◆ The process doesn't need any medium.
◆ It is the fastest process than all other processes.
◆ Heat can be transferred in any direction but of straight path.

Answer 2

What are the modes of heat transfer discuss conduction convection and radiation?

The image above, provided by NASA, highlights how all three heat-transfer methods (conduction, convection, and radiation) work in the same environment. Conduction transfers heat via direct molecular collision. An area of greater kinetic energy will transfer thermal energy to an area with lower kinetic energy.