explain heat transfer process in conduction, convection, radiation.
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Heya...
Hereis your answer ---
As we all know, the three processes of heat transfer are :- Conduction, Convection and Radiation.
CONDUCTION : Conduction is the flow of heat through a substance without the movement of the particles of the substance.
Let us take an example of heating a solid rod by the process of conduction. The molecules in the solid rod are oscillating about their fixed position. As the molecule at one end get heated, they get kinetic energy and start oscillating vigorously. They collide with the neighbouring molecules and transfer the extra energy to them. These gain kinetic energy and transfer it to their neighbouring molecules. In this way, heat is transmitted from one molecule to the next, down the whole rod, without the molecules actually moving from their positions. This process by which heat travels in solids is called conduction.
Conduction is a process of heat transfer from hotter end to the colder end from particle to particle of the medium. Thus, medium is required for the transfer of heat by conduction, therefore, conduction is not possible in vacuum. In solids, heat is mainly transferred by conduction.
CONVECTION : Convection is a process of heat transfer by the actual movement of the medium particles. Liquids and gases are the bad conductors of heat. They are heated mainly by the process of convection. In a solid, atoms cannot move, leaving their positions. So solids are not heated by convection.
One example of convection is Land and Sea Breeze. In the coastal regions, during summer it is noticed that a breeze generally blows from land towards the sea during the night, which is called the land breeze. The opposite happens in the night. So there is sea breeze during the night.
RADIATION : Radiation is the process of heat transfer in which heat directly passes from one body to the other body without affecting the medium. Thus, no medium is required for the heat transfer by the process of Radiation. In vacuum, heat transfer takes place only by the process of Radiation.
Some example of Radiation is :
Metal teapots are kept shining as shining teapots are bad radiators of heat and hence tea remains hot for a long time.
I HOPE THIS MUCH IS ENOUGH AND YOU UNDERSTOOD IT WELL....
HOPE IT HELPS...!!
Hereis your answer ---
As we all know, the three processes of heat transfer are :- Conduction, Convection and Radiation.
CONDUCTION : Conduction is the flow of heat through a substance without the movement of the particles of the substance.
Let us take an example of heating a solid rod by the process of conduction. The molecules in the solid rod are oscillating about their fixed position. As the molecule at one end get heated, they get kinetic energy and start oscillating vigorously. They collide with the neighbouring molecules and transfer the extra energy to them. These gain kinetic energy and transfer it to their neighbouring molecules. In this way, heat is transmitted from one molecule to the next, down the whole rod, without the molecules actually moving from their positions. This process by which heat travels in solids is called conduction.
Conduction is a process of heat transfer from hotter end to the colder end from particle to particle of the medium. Thus, medium is required for the transfer of heat by conduction, therefore, conduction is not possible in vacuum. In solids, heat is mainly transferred by conduction.
CONVECTION : Convection is a process of heat transfer by the actual movement of the medium particles. Liquids and gases are the bad conductors of heat. They are heated mainly by the process of convection. In a solid, atoms cannot move, leaving their positions. So solids are not heated by convection.
One example of convection is Land and Sea Breeze. In the coastal regions, during summer it is noticed that a breeze generally blows from land towards the sea during the night, which is called the land breeze. The opposite happens in the night. So there is sea breeze during the night.
RADIATION : Radiation is the process of heat transfer in which heat directly passes from one body to the other body without affecting the medium. Thus, no medium is required for the heat transfer by the process of Radiation. In vacuum, heat transfer takes place only by the process of Radiation.
Some example of Radiation is :
Metal teapots are kept shining as shining teapots are bad radiators of heat and hence tea remains hot for a long time.
I HOPE THIS MUCH IS ENOUGH AND YOU UNDERSTOOD IT WELL....
HOPE IT HELPS...!!
BrainlyHulk:
hmmmm.
thanx everyone :-)
woah!
amazing answer!!!!!!!!!! superb.. well explained..
:)
gottli.. alu.... love u both ^_^
dhanyavaad kiaa
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