in heat transfer, conduction (or heat conduction) is the transfer of heat energy by microscopic diffusion and collisions of particles or quasi-particles within a body due to atemperature gradient. The microscopically diffusing and colliding objects include molecules, electrons, atoms, and phonons. They transfer microscopically disorganized kinetic energy. Conduction takes place in all forms of ponderable matter, such as solids, liquids, gases and plasmas.
By conduction, as well as by thermal radiation, heat spontaneously flows from a body at a higher temperature to a body at a lower temperature. In the absence of external driving fluxes, temperature differences, over time, approach thermal equilibrium.
During conduction, the heat flows through the body itself, as opposed to its transfer by the bulk motion of the matter as in convection, and by thermal radiation. In solids, it is due to the combination of vibrations of the molecules in a lattice or phonons and diffusion of free electrons. In gases and liquids, conduction is due to the collisions and diffusion of the molecules during their random motion. Photons in this context do not collide with one another, and heat transport by electromagnetic radiation is conceptually distinct from heat conduction by microscopic diffusion and collisions of material particles and phonons. In condensed matter, such as a solid or liquid, the distinction between conduction and radiative transfer of heat is clear in physical concept, but it is often not phenomenologically clear, unless the material is semi-transparent. In a gas the distinction is both conceptually and phenomenologically clear.
In the engineering sciences, heat transfer includes the processes of thermal radiation, convection, and sometimes mass transfer. Usually more than one of these processes occurs in a given situation. The conventional symbol for the material property, thermal conductivity, is .
Heating conduction is the process of transferring internal energy by microscopic diffusion and the collision of particles. It is also known as thermal conduction.
rejecting heat
Two examples of heat conduction that are observable in everyday life:- heat conduction through walls- heat conduction through clothing- heat conduction from many home appliances
That sounds like a description of heat conduction.
Conduction is the term for heat transfer because of direct contact.
the process of transfer of heat energy in solids is known as conduction.. For more info-- the process of transfer of heat energy in liquids and gases is known as convection.. And the process of transfer of heat energy without any material medium is known as radiation..
Conduction.
no, conduction describes how the heat is transported not how it is generated. With conduction, a heat source is still needed.
Two examples of heat conduction that are observable in everyday life:- heat conduction through walls- heat conduction through clothing- heat conduction from many home appliances
conduction by itself is slower to heat but conduction and convection is faster to heat
Conduction is one way that heat spreads.
That sounds like a description of heat conduction.
Conduction is the term for heat transfer because of direct contact.
Conduction heat moves by using movement of fluids.
Conduction heat moves by using movement of fluids.
Heat con conduction is efficient metals
In Conduction the heat flows by molecular contact (i.e.) by touch)
Why is conduction important?
Conduction.Convection.Radiation