Emissivity tables
21
Table 21.1
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
Plastic
polyurethane iso-
lation board
70
SW
0.29
9
Plastic
PVC, plastic floor,
dull, structured
70
SW
0.94
9
Plastic
PVC, plastic floor,
dull, structured
70
LW
0.93
9
Platinum
100
T
0.05
4
Platinum
1000–1500
T
0.14–0.18
1
Platinum
1094
T
0.18
4
Platinum
17
T
0.016
4
Platinum
22
T
0.03
4
Platinum
260
T
0.06
4
Platinum
538
T
0.10
4
Platinum
pure, polished
200–600
T
0.05–0.10
1
Platinum
ribbon
900–1100
T
0.12–0.17
1
Platinum
wire
1400
T
0.18
1
Platinum
wire
500–1000
T
0.10–0.16
1
Platinum
wire
50–200
T
0.06–0.07
1
Porcelain
glazed
20
T
0.92
1
Porcelain
white, shiny
T
0.70–0.75
1
Rubber
hard
20
T
0.95
1
Rubber
soft, gray, rough
20
T
0.95
1
Sand
T
0.60
1
Sand
20
T
0.90
2
Sandstone
polished
19
LLW
0.909
8
Sandstone
rough
19
LLW
0.935
8
Silver
polished
100
T
0.03
2
Silver
pure, polished
200–600
T
0.02–0.03
1
Skin
human
32
T
0.98
2
Slag
boiler
0–100
T
0.97–0.93
1
Slag
boiler
1400–1800
T
0.69–0.67
1
Slag
boiler
200–500
T
0.89–0.78
1
Slag
boiler
600–1200
T
0.76–0.70
1
Snow: See Water
Soil
dry
20
T
0.92
2
Soil
saturated with
water
20
T
0.95
2
Stainless steel
alloy, 8% Ni, 18%
Cr
500
T
0.35
1
Stainless steel
rolled
700
T
0.45
1
Stainless steel
sandblasted
700
T
0.70
1
Stainless steel
sheet, polished
70
SW
0.18
9
#T810252; r. AA/41997/41997; en-US
82
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