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Comparision of Convection vs. Infrared

From Heraeus Noblelight, Inc.
 

 

How is heat transfer different? Convection can only be controlled by air temperature and airspeed. With infrared emitters a far greater flexibility in heat up rates and temperatures can be achieved using different energy densities and wavelengths. How energy efficient are the technologies? Convection can waste a lot of energy when switching from large to small components, Infrared emitters can target energy to areas that require heating. How long are the reaction times of the heating systems? It may take 30 minutes to 2 hours depending on the size of the convection oven, so an oven will be left running all-day even when there is no production. Infrared emitters can be switched on and off within seconds to suit production conditions. How is the influence of mass change? In convection oven the heat up rates will be influenced by mass (number) of components. Infrared is an "energy source" and is not influenced by the number of components in the oven.

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