Conduction- The OG heat transfer method
The transfer of heat is an important process in nature and engineering. Two distinct types of heat transfer occur in nature: conduction and convection. In addition, mechanical transmission occurs between objects in mechanical systems. Conduction, convection and mechanical transmission are three different ways to transfer heat. Conduction transfers heat quickly and is used for short distances, whereas radiation transfers heat slowly and is used for long distances. Some past research has shown that convective transfer can be faster than conduction when transferring large amounts of heat.
Conduction is the transfer of heat by contact between materials. It is one of the four main methods of transferring heat. In this method, the transferring material becomes hotter as it contacts the contacting one. This method is used to cool down a hot object and to warm up a cold object. Conductive methods are used in electronics, thermal management in machines and refrigeration for preserving food, and medical treatments for curing diseases.
Conductive heat transfer occurs when a material transfers heat to a material against which it is touching. The touching material becomes hotter as it contacts the contacting one. This method is used to warm up cold objects and to cool down hot objects. For example, an electrician uses conductive methods when installing electrical equipment- he uses conductive methods to make contact with the metal parts of electrical switches and fixtures. He warms up his hands by making contact with them against metal parts then transfers his warmth to his hands and then to the metal parts of the equipment he is working on. On the other hand, a person who needs to stay warm during winter does this same thing by making contact with his body against something warm, such as a radiator or an animal's hot skin.
Many uses exist for conductive methods such as wiring and heating systems in cars and buildings. It isn't limited to these applications either; people use conductive methods in treatment of skin diseases or in keeping their body temperature at normal levels. These methods can be used for solving many problems by allowing humans to control or modify the way they generate or transfer heat.
Heat transfer also occurs rapidly among molecules and among objects- it occurs rapidly when two or more objects come into direct contact with each other or with a medium. For example, when two metal plates come into contact with each other, they will become hotter due to rapid molecular transfers of heat among the molecules in both objects. In addition, rapid transfers occur when one object comes into direct contact with a liquid such as water or oil. This happens rapidly when water or oil comes into contact with an object due to rapid molecular transfers between water and oil molecules and between the water and the object itself. However, convection is usually more efficient at rapid heat transfer when large amounts of heat are being transferred among molecules or between objects and a liquid or gas medium.
Although there are several ways to transfer heat in nature, conduction is usually more efficient when transferring large amounts of heat- it's fastest when two objects come into direct contact with each other or with a hot surface (radiation). However, convection is usually more efficient when transferring large amounts of heat among molecules- it's fastest when two or more objects come into direct contact with each other or with a cold surface (radiation). Therefore, most natural processes use both conduction and convection for efficient heat transfer at desired rates and temperatures.