Radiation Exchange Between Surfaces

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Chapter 1Radiation Exchange Between Motivation and ObjectivesThermal Radiation , as you know, constitutes one of the threebasic modes (or mechanisms ) of heattransfer, , conduction, convection, and Radiation . Actually, on a physical basis, there are onlytwo mechanisms of heat transfer; diffusion (the transfer of heat via molecular interactions) andradiation (the transfer of heat via photons/electomagnetic waves). Convection, being the bulktransport of a fluid, is not precisely aheattransfer physics of Radiation transport are distinctly differentthan diffusion transport. The latteris alocalphenomena, meaning that the rate of diffusion heat transfer,at a point in space, preciselydepends only on the local nature about the point, , the temperature gradient and thermalconductivity at the point. Of course, the temperature field will depend on the boundary and initialconditions imposed on the system.

Radiation Exchange Between Surfaces 1.1 Motivation and Objectives Thermal radiation, as you know, constitutes one of the three basic modes (or mechanisms) of heat transfer, i.e., conduction, convection, and radiation. Actually, on a physical basis, there are only

  Basics, Radiation, Mechanisms