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What are Conduction, Convection and Radiation?

April 26, 2017conduction convection radiation

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What are Conduction, Convection and Radiation?

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3) Radiation – when you stand in front of a hot electric fire or at some distance from a bonfire, you can feel the fire’s heat on your body, this is radiated heat (a form of long wavelength light) and is how the Sun warms the Earth.

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For either a reflective insulation or a radiant barrier, an air space of a minimum thickness is required on the reflective side of the product. (Most Reflectix products are reflective (shiny) on both sides.) The reflective insulation benefit is derived from the interaction of the highly reflective surface with the air space. If the reflective surface is in contact with another building material, it becomes a conductor (transmitting the energy by conduction). An air space may be specified on one or both sides of the product (always on a reflective side). Enclosed air spaces, when instructed, are required to provide the stated R-value.

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These are 3 ways that heat moves from warm regions to cool regions:

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These are the three methods of heat transfer: Conduction is heat flow through a material; Convection is heat flow transferred by the movement of air; and Radiation is the transfer of heat flow by way of infrared waves (Radiant Energy).