User's Manual

Emissivity tables20
Table 20.1 T: Total spectrum; SW: 2–5 µm; LW: 8–14 µm, LLW: 6.5–20 µm; 1: Material; 2: Specification;
3:Temperature in °C; 4: Spectrum; 5: Emissivity: 6:Reference (continued)
1 2 3 4 5 6
Water frost crystals
–10 T 0.98 2
Water ice, covered with
heavy frost
0 T 0.98 1
Water ice, smooth 0 T 0.97 1
Water ice, smooth –10 T 0.96 2
Water layer >0.1 mm
thick
0–100 T 0.95–0.98 1
Water
snow
T 0.8 1
Water
snow –10 T 0.85 2
Wood 17
SW
0.98 5
Wood 19 LLW 0.962 8
Wood ground T 0.5–0.7 1
Wood pine, 4 different
samples
70
SW
0.67–0.75 9
Wood pine, 4 different
samples
70 LW 0.81–0.89 9
Wood planed 20 T 0.8–0.9 1
Wood planed oak 20 T 0.90 2
Wood planed oak 70
SW
0.77 9
Wood planed oak 70 LW 0.88 9
Wood plywood, smooth,
dry
36
SW
0.82 7
Wood plywood,
untreated
20
SW
0.83 6
Wood white, damp 20 T 0.7–0.8 1
Zinc
oxidized at 400°C
400 T 0.11 1
Zinc oxidized surface
1000–1200 T 0.50–0.60 1
Zinc polished 200–300 T 0.04–0.05 1
Zinc sheet 50 T 0.20 1
#T559828; r. AK/40423/40423; en-US
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