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
|Differences||In 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.|
|Shows||Heat travels between objects in direct contact.||Heat passes through fluids.||Heat flows through empty spaces.|
|Cause||Due to temperature differences.||Due to density differences.||Occurs from all objects, at temperatures greater than 0 K.|
|Occurrence||It occurs in solids, through molecular collisions.||It occurs in fluids, by the actual flow of matter.||It occurs through electromagnetic waves.|
|Transfer of heat||Uses heated solid substance.||Uses intermediate substance. Like air and water||Uses electromagnetic waves.|
|Speed||Heat transfer is slow||Heat transfer is slow||Heat transfer is fast|
|Law of reflection and refraction||It does not follow||It does not follow||It follows|
Trick To remember this concept – Imagine Solid, Liquid, Gaseous, and mode of heat transfer through them. Then solid – conductor, liquid – convection, gaseous – radiation.