What are the three modes of heat transfer?
What are the three modes of heat transfer?
There are three modes of heat transfer:
1. Conduction
Heat conduction is a process in which heat is transferred from the hotter part to the colder part of a body without involving any actual movement of the molecules of the body.
For example: When frying vegetables in a pan. Heat transfer takes place from the flame to the pan and then to the vegetables.
2. Convection
In this process, heat is transferred in the liquid and gases from a region of higher temperature to a region of lower temperature. Heat transfer through convection occurs partly due to the actual movement of molecules or due to the mass transfer.
For example. Heating of milk in a milk bowl.
3. Radiation
It is the process in which heat is transferred from one body to another body without involving the molecules of the medium. Heat transfer through radiation does not depend on the medium.
For example Heat energy transfers from the sun to earth through radiation.
There are three modes of heat transfer:
1. Conduction
Heat conduction is a process in which heat is transferred from the hotter part to the colder part of a body without involving any actual movement of the molecules of the body.
For example: When frying vegetables in a pan. Heat transfer takes place from the flame to the pan and then to the vegetables.
2. Convection
In this process, heat is transferred in the liquid and gases from a region of higher temperature to a region of lower temperature. Heat transfer through convection occurs partly due to the actual movement of molecules or due to the mass transfer.
For example. Heating of milk in a milk bowl.
3. Radiation
It is the process in which heat is transferred from one body to another body without involving the molecules of the medium. Heat transfer through radiation does not depend on the medium.
For example Heat energy transfers from the sun to earth through radiation.
