690 W/m²·K = 121.5161 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 675 W/m²·K | 118.8744 |
| 680 W/m²·K | 119.755 |
| 685 W/m²·K | 120.6355 |
| 690 | 121.5161 |
| 695 W/m²·K | 122.3966 |
| 700 W/m²·K | 123.2772 |
| 705 W/m²·K | 124.1578 |
690 W/m²·K = 121.5161 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)