138 W/m²·K = 24.3032 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 123 W/m²·K | 21.6616 |
| 128 W/m²·K | 22.5421 |
| 133 W/m²·K | 23.4227 |
| 138 | 24.3032 |
| 143 W/m²·K | 25.1838 |
| 148 W/m²·K | 26.0643 |
| 153 W/m²·K | 26.9449 |
138 W/m²·K = 24.3032 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)