Details:LongWave
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Long-wave Radiation Emissivity
For non-metallic component surfaces, the long-wave radiation emissivity is usually 0.9 or thereabout.
WUFI automatically determines the long-wave emissivity from the type of surface selected for the short-wave absorptivity or employs user-defined values for both.
The emissivity coefficients are entered in the dialog "Surface Transfer Coefficients". [##update##]
