Heat Transfer Handbook part 59. The Heat Transfer Handbook provides succinct hard data, formulas, and specifications for the critical aspects of heat transfer, offering a reliable, hands-on resource for solving day-to-day issues across a variety of applications. | CHAPTER 8 Thermal Radiation MICHAEL F MODEST College of Engineering Pennsylvania State University University Park Pennsylvania Fundamentals Emissive power Solid angles Radiative intensity Radiative heat flux Radiative properties of solids and liquids Radiative properties of metals Wavelength dependence Directional dependence Hemispherical properties Total properties Surface temperature effects Radiative properties of nonconductors Wavelength dependence Directional dependence Temperature dependence Effects of surface conditions Surface roughness Surface layers and oxide films Semitransparent sheets Summary Radiative exchange between surfaces View factors Direct integration Special methods View factoralgebra Crossed-strings method Radiative exchange between black surfaces Radiative exchange between diffuse gray surfaces Convex surface exposed to large isothermal enclosure Radiation shields Radiative exchange between diffuse nongray surfaces Semigray approximation method Band approximation method 573 574 THERMAL RADIATION Radiative properties of participating media Molecular gases Particle clouds Soot Pulverized coal and fly ash dispersions Mixtures of molecular gases and particulates Radiative exchange within participating media Mean beam length method Diffusion approximation P-1 approximation Other RTE solution methods Weighted sum of gray gases Other spectral models Nomenclature References FUNDAMENTALS Radiative heat transfer or thermal radiation is the science of transferring energy in the form of electromagnetic waves. Unlike heat conduction electromagnetic waves do not require a medium for their propagation. Therefore because of their ability to travel across vacuum thermal radiation becomes the dominant mode of heat transfer in low pressure vacuum and outer-space applications. Another distinguishing .
