639.5 W/m²·K = 112.6225 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 624.5 W/m²·K | 109.9809 |
| 629.5 W/m²·K | 110.8614 |
| 634.5 W/m²·K | 111.742 |
| 639.5 | 112.6225 |
| 644.5 W/m²·K | 113.5031 |
| 649.5 W/m²·K | 114.3836 |
| 654.5 W/m²·K | 115.2642 |
639.5 W/m²·K = 112.6225 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)