321 W/m²·K = 56.5314 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 306 W/m²·K | 53.8897 |
| 311 W/m²·K | 54.7703 |
| 316 W/m²·K | 55.6509 |
| 321 | 56.5314 |
| 326 W/m²·K | 57.412 |
| 331 W/m²·K | 58.2925 |
| 336 W/m²·K | 59.1731 |
321 W/m²·K = 56.5314 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)