821 W/m²·K = 144.5865 BTU/hr·ft²·°F
| W/m²·K | BTU/hr·ft²·°F |
|---|---|
| 806 W/m²·K | 141.9449 |
| 811 W/m²·K | 142.8254 |
| 816 W/m²·K | 143.706 |
| 821 | 144.5865 |
| 826 W/m²·K | 145.4671 |
| 831 W/m²·K | 146.3476 |
| 836 W/m²·K | 147.2282 |
821 W/m²·K = 144.5865 BTU/hr·ft²·°F
1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)