Question

Reflectance, % 100 80 A 60 A B B 40 20 C 0 Scale change C A C -B Polished zinc on polished aluminum Galvanized iron, 22 mil, commercial finished. Tabor solar collector chem. treatment of galvanized iron 0.25 0.50 0.75 1.0 2.0 3.0 4.0 5.0 6.0 7.0 9.0 13 15 17 19 21 23 25 Wavelength, $\mu m$ Figure 4.8.2 Spectral reflectance of several surfaces. From Edwards et al. (1960).

          Reflectance, %
100
80
A
60
A
B
B
40
20
C
0
Scale change
C
A
C
-B
Polished zinc on polished
aluminum
Galvanized iron, 22 mil,
commercial finished.
Tabor solar collector
chem. treatment of
galvanized iron
0.25 0.50 0.75 1.0 2.0 3.0 4.0 5.0 6.0 7.0 9.0
13 15 17 19 21
23 25
Wavelength, $\mu m$
Figure 4.8.2 Spectral reflectance of several surfaces. From Edwards et al. (1960).

Reflectance, %
100
80
A
60
A
B
B
40
20
C
0
Scale change
C
A
C
-B
Polished zinc on polished
aluminum
Galvanized iron, 22 mil,
commercial finished.
Tabor solar collector
chem. treatment of
galvanized iron
0.25 0.50 0.75 1.0 2.0 3.0 4.0 5.0 6.0 7.0 9.0
13 15 17 19 21
23 25
Wavelength, μ m
Figure 4.8.2 Spectral reflectance of several surfaces. From Edwards et al. (1960).

Added by Sharon L.

University Physics with Modern Physics

Hugh D. Young 14th Edition

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Solved by Expert Supratim Pal

Step 1

From Figure 4.8.2, we can see that the wavelength range is from 0.3 to 0.7 micrometers. Show more…

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Estimate the emittance of a surface having characteristics of curve C of Figure 4.8.2 if its temperature is 175Â°C and 30Â°C. 100 c 80 of 60 reflectance, 40 - A Polished zinc on polished aluminum B Galvanized iron, 22 mil, commercial finished c Tabor solar collector chem. treatment of galvanized iron 20 Scale change . 1 : ! 0.25 0.50 0.75 1.02 0.3 0.4 0.5 0.6 0.7 0.6 13 15 17 19 21 23 25 Wavelength (m) Figure 4.8.2 Spectral reflectance of several surfaces. From Edwards et al. (1960).