490 W/m²·K = 86.294 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 475 W/m²·K | 83.6524 |
| 480 W/m²·K | 84.5329 |
| 485 W/m²·K | 85.4135 |
| 490 | 86.294 |
| 495 W/m²·K | 87.1746 |
| 500 W/m²·K | 88.0551 |
| 505 W/m²·K | 88.9357 |
490 W/m²·K = 86.294 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)