Question

(2) Spectral Emissivity, Total Emissivity, and Emissive Power Material 1 Material 2 1 [um] Professor Dames has synthesized two new materials in his lab, and their spectral emissivities are plotted above For each material you may assume that the measured &, can be extrapolated at constant values above and below the measurement range, as indicated. So for example, in material 1, you may assume E), 0.2 all the way down to 2.0. (SUBMT ONLINE) Assuming we're using these materials in some standard industrial process on the planet Earth, which material will have greater total emissive power E

dont think they are

Answer 1

spectral emissivity Ex = E. Er is changing wont wavelength a for non-grey body. emigiv,' Assuming for is constant E= - I da E- Total emissive power = Ex Eb Material -1: Material-d- Er o.at tô Alum) acum) I da to donar force dat / orada € = 0.654 08454 Total Emisivity of material-t is greater than material- (60 ) A so The Total Emisive power E is more for Material: