Distinguish between free convection and forced convection.

Monjur Alahi

Distinguish between free convection and forced convection.


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Salim Ahmed Kawsar

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Free convection Forced convection
i. When a hot body is in contact with air under ordinary conditions, like air around a firewood, the air removes heat from the body by a process called free or natural convection. The convection process can be accelerated by employing a fan to create a rapid circulation of fresh air. This is called forced convection. 
ii. Land and sea breezes are formed as a result of free convection currents in air. Heat convector, air conditioner, heat radiators in IC engine etc. operate using forced convection.

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