Heat Transfer

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Heat Transfer

Heat Transfer


Heat transfer, also referred to simply as heat, is the movement of thermal energy from one thing to another thing of different temperature. These objects could be two solids, a solid and a liquid or gas, or even within a liquid or gas.

The process of heat or electricity is directly transmitted through a substance when there is a different temperature or of electrical potential between adjoining regions, without movement of the material.

The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.



This is an example of Conduction

This is an example of Convection

This is an example of Radiation

The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.



A real life example of Conduction is A boy grabs a penny from his tabletop, and it feels very cold to the touch. After holding it for a few seconds, the heat from his hand is conducted to the metal coin

A real life example of Convection is Boiling water - The heat passes from the burner into the pot, heating the water at the bottom. Then, this hot water rises and cooler water moves down to replace it, causing a circular motion.

Some real life examples of Radiation are -X-rays-Nuclear power production-Nuclear weapons-Coal mining and power production from coal-CT scans


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