669 W/m²·K = 117.8178 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 654 W/m²·K | 115.1761 |
| 659 W/m²·K | 116.0567 |
| 664 W/m²·K | 116.9372 |
| 669 | 117.8178 |
| 674 W/m²·K | 118.6983 |
| 679 W/m²·K | 119.5789 |
| 684 W/m²·K | 120.4594 |
669 W/m²·K = 117.8178 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)