InfRec Thermo Gear G100, Руководство по эксплуатации

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Chapter 7 Appendix
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EMISSIVITY OF VA RIOUS
MA TERIA LS
From ”Infrared Radiation, a Handbook for Applications ”by Michael A. Bramson
Material Temperature °C
Emissivity
ε
Aluminum Polished 50 to 100 0.04 to 0.06
do. Rough surface 20 to 50 0.06 to 0.07
do. Strongly oxidized 50 to 500 0.20 to 0.3
do. Aluminum bronze 20 0.6
do. Aluminum oxide, pure, powder Normal
temperature
0.16
Brass Dull, tarnished 20 to 350 0.22
do.
Oxidized at 600 ° C
200 to 600 0.59 to 0.61
do. Polished 200 0.03
do. Sheet, worked with emery 20 0.2
Bronze Polished 50 0.1
do. Porous, rough 50 to 150 0.55
Chromium Polished 50 0.1
do. do. 500 to 1000 0.28 to 0.38
Copper Commercial, burnished 20 0.07
do. Electrolytic, carefully polished 80 0.018
do. Electrolytic, powder Normal
temperature 0.76
do. Molten 1100 to 1300 0.13 to 0.15
do. Oxidized 50 0.6 to 0.7
do. Oxidized to blackness 5 0.88
Iron Covered with red rust 20 0.61 to 0.85
do. Electrolytic, carefully polished 175 to 225 0.05 to 0.06
do. Freshly worked with emery 20 0.24
do. Oxidized 100 0.74
do. do. 125 to 525 0.78 to 0.82
do. Hot rolled 20 0.77
do. do. 130 0.60
Lead Gray, oxidized 20 0.28
do. Oxidized at 200
°
C 200 0.63
do. Red, powder 100 0.93
do. Lead sulfate, powder Normal
temperature 0.13 to 0.22
Mercury 0 to 100 0.09 to 0.12
Molybdenum 600 to 1000 0.08 to 0.13
do. Filament 700 to 2500 0.10 to 0.30
Nichrome Wire, clean 50 0.65
do. do. 500 to 1000 0.71 to 0.79
95691-2935-0000
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