139 W/m²·K = 24.4793 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 124 W/m²·K | 21.8377 |
| 129 W/m²·K | 22.7182 |
| 134 W/m²·K | 23.5988 |
| 139 | 24.4793 |
| 144 W/m²·K | 25.3599 |
| 149 W/m²·K | 26.2404 |
| 154 W/m²·K | 27.121 |
139 W/m²·K = 24.4793 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)