The spectral emissivity and spectral reflectivity of a diffuse surface are given below: 1.0 0.2 0.2 0.1 1.40 3.0 λίμm) 1.40 3.0 λ(μη) i- K. Determine the total emissive power of the surface (in W/m²) if the surface is at 2000 Determine the absorptivity and reflectivity of the surface for radiation coming from the source at temperature of 1000 K. ii- iii- Sketch the spectral transmissivity, t iv- What is the total absorptivity of the surface for the irradiation depicted below? 5000 1.0 2.0 3.0 4.0 5.0 1 (um)
The spectral emissivity and spectral reflectivity of a diffuse surface are given below: 1.0 0.2 0.2 0.1 1.40 3.0 λίμm) 1.40 3.0 λ(μη) i- K. Determine the total emissive power of the surface (in W/m²) if the surface is at 2000 Determine the absorptivity and reflectivity of the surface for radiation coming from the source at temperature of 1000 K. ii- iii- Sketch the spectral transmissivity, t iv- What is the total absorptivity of the surface for the irradiation depicted below? 5000 1.0 2.0 3.0 4.0 5.0 1 (um)
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