Convection Vs Conduction Vs Radiation

Convection Vs Conduction Vs Radiation: Hello Learners, In this amazing post we will look at what is the difference between convection, conduction, and radiation. Let’s know the concept of these terms which are used in thermal engineering.

  • Conduction – The transfer of energy between objects that are in physical contact.
  • Convection – The transfer of energy between an object and its environment, due to fluid motion.
  • Radiation – The transfer of energy by the emission of electromagnetic radiation.
Convection Vs Conduction Vs Radiation
Fig1.1 – Modes of heat transfer

Convection Vs Conduction Vs Radiation

DifferencesIn this process, heat transfers take place between objects by direct contact.It refers to the form of heat transfer in which energy transition occurs within the fluid.In this process, heat is transmitted without any physical contact between objects.
ShowsHeat travels between objects in direct contact.Heat passes through fluids.Heat flows through empty spaces.
CauseDue to temperature differences.Due to density differences.Occurs from all objects, at temperatures greater than 0 K.
OccurrenceIt occurs in solids, through molecular collisions.It occurs in fluids, by the actual flow of matter.It occurs through electromagnetic waves.
Transfer of heatUses heated solid substance.Uses intermediate substance. Like air and waterUses electromagnetic waves.
SpeedHeat transfer is slowHeat transfer is slowHeat transfer is fast
Law of reflection and refractionIt does not followIt does not followIt follows

Also Read: What do you mean by ‘Sustainable Development’?

Trick To remember this concept – Imagine Solid, Liquid, Gaseous, and mode of heat transfer through them. Then solid – conductor, liquid – convection, gaseous – radiation.

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