Radiation Constant of Building Materials
Radiation Constant of Building Materials
| Material |
W/m² (°C)⁴ |
Btu/hr ft² (°F)⁴ |
| Black body |
5.72 |
0.173 |
| Cotton |
4.23 |
0.128 |
| Glass |
5.13 |
0.155 |
| Wood |
4.17 |
0.126 |
| Brick |
5.16 |
0.156 |
| Oil paint |
4.30 |
0.130 |
| Paper |
4.43 |
0.134 |
| Lamp black |
5.16 |
0.156 |
| Sand |
4.20 |
0.127 |
| Shavings |
4.10 |
0.124 |
| Silk |
4.30 |
0.130 |
| Water |
3.70 |
0.112 |
| Wool |
4.30 |
0.130 |
| Wrought iron, dull oxidised |
5.16 |
0.156 |
| Wrought iron, polished |
1.55 |
0.047 |
| Cast iron, rough oxidised |
5.09 |
0.154 |
| Copper, polished |
1.19 |
0.036 |
| Brass, dull |
0.152 |
0.0046 |
| Silver |
1.19 |
0.036 |
| Zinc, dull |
0.152 |
0.0046 |
| Tin |
0.26 |
0.0077 |
| Plaster |
5.16 |
0.156 |
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