231 W/m²·K = 40.6815 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 216 W/m²·K | 38.0398 |
| 221 W/m²·K | 38.9204 |
| 226 W/m²·K | 39.8009 |
| 231 | 40.6815 |
| 236 W/m²·K | 41.562 |
| 241 W/m²·K | 42.4426 |
| 246 W/m²·K | 43.3231 |
231 W/m²·K = 40.6815 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)