Hello everyone,
Having a reflectance data of absorber coating measured from UV-Vis spectrometer in the wavelength range 300-2500 nm, how can I calculate solar absorbance using a standard reference AM 1.5 solar spectrum and also thermal emittance using black body radiation spectrum at 500 degrees?
Thank you all.
Chris Gueymard
The irradiance below 300 and above 2500 is very small, so that you can use your measurement to obtain the solar absorptance, as the integral of your reflected irradiance divided by that of your incident irradiance.
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