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Convective heat transfer, often referred to simply as convection, is the transfer of heat from one place to another by the movement of fluids. Convection is usually the dominant form of heat transfer in liquids and gases. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of unknown conduction and advection.
Most of out experience is heat moving through conduction - molecules banging against â¦ each other - or convection - a mass of warmer liquid or gas moving into an area of lower temperature. In a vacuum however, there is no mass to move or molecules to bang into each other. The only mode of heat transfer in a vacuum is by way of radiation.