Abstract
<p>The article deals with a heat radiation model used for heat flux calculation of an infrared heater. In general, we consider a system consisting of a set of objects, whereas a single object could stand for a heater, a reflector or a heated body. Each of the objects is defined by its bounding surface. The presented model applies a 2D restriction of the real system. The aim of a particular simulation is to obtain a heat flux distribution all over the heated body under given conditions such as objects temperature and material properties. Furthermore, the implemented model is used to design a reflector profile to obtain a desired heat flux distribution. The paper presents the implemented model, a comparison of simulated and measured data and an example of reflector design.</p>
Highlights
In high temperature applications, e.g. with infrared heating, thermal radiation is the dominant mode of heat transfer
It is necessary to determine the optimal location for heaters, aiming at almost uniform distribution for radiation intensity all over the shell form surface
A model of a complex system consisting of a shell form and dozens of heaters [5] works with a heat flux distribution function that determines the heat flux at various points under the emitter
Summary
E.g. with infrared heating, thermal radiation is the dominant mode of heat transfer. Among other methods, to heat-up shell-forms in the production of artificial leathers in the automotive industry In this case, it is necessary to determine the optimal location for heaters, aiming at almost uniform distribution for radiation intensity all over the shell form surface. A model of a complex system consisting of a shell form and dozens (or hundred) of heaters [5] works with a heat flux distribution function that determines the heat flux at various points under the emitter. A similar topic, i.e., radiative heat transfer simulation, can be found in the work of Takami, Danielson and Mahmoudi [6], where the authors present simulations for the purpose of optimizing the high power reflector with respect to heat power and temperature distribution. Our model is applicable to other purposes: (1), to verify a multiple infrared heat source interaction, or (2) to design an alternative reflector shape suitable for specific criteria, such as focusing the heat flux in the desired direction or (3) to design a reflector that achieves a desired heat flux distribution all over the heated body
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