What is a convection?

Convection is generally the movement of any molecules in any state of fluid, including liquids and gases. It is the primary form of heat transfer and matter on the ground and can be found in many systems around the world. Many people are familiar with it from heating food or houses and also plays a key role in creating weather conditions on the planet.

There are two main types of convection: forced and natural. Forced convection occurs when the medium is transmitted by heat in itself, for example when air is pushed by a fan. In this case, the heat is paid by the movement of the fluid air, but in fact it does not cause movement. Sometimes forced convection will also be referred to as thermal council. It happens both because the medium expands, as it warms up, as in the case of gases, and also because the buoyancy causes the more tbet fluid. This form is also sometimes referred to as free convection. Both types, forced and natural, often occur at the same time where the heat causes the liquid to move somewhat butKé moves because of other strength. In this case, it is referred to as mixed convection.

Forced convections can be seen in many places in the world, both in human -created and in the natural world. For example, the convection oven forces heated air to circulate with a fans. Although the air can move somewhat itself, the force allows even the heat payment. In the human body, the circulatory system is another big example of forced convection. Blood among many other uses acts as a heating agent and a cooling agent for the body and is forced through the circulatory system.

natural convection can be easily seen on a placement above a non -created heat source such as the radiator heater. When the air is heated directly above the heater, it rises because it is floating than the cold air around it. If you put a piece of silk paper above the heating, you will see that it is carried up by natural air movement. PYou can see the same effect when working by heating one liquid that is colored and placed in a cooler liquid of another color. The warm liquid rises.

Convection plays a key role in creating ocean streams, thereby helping to regulate weather patterns around the world through a massive convection system. Warm water currents, heated by the sun, the head of the equator towards the poles and as they travel, constantly cool and help them drop. Once they are building there and start moving again to create a massive conveyor belt that can in some cases take 1,600 years to complete their way.