Convert Celsius Heat Unit per hour per square foot to International table BTU per second per square foot
Convert Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) to International table BTU per second per square foot (BTU(IT)/(s·ft²)) instantly and accurately.
Conversion Formula
BTU(IT)/(s·ft²) = CHU/(h·ft²) × 0.0005
About Celsius Heat Unit per hour per square foot
The Celsius heat unit per hour per square foot (CHU/(h·ft²)) equals (9/5)×1055.05585262/(3600×0.09290304) ≈ 5.6783 W/m². The CHU (= 9/5 BTU(IT)) uses a 1 °C temperature interval instead of 1 °F; historically used in UK and Canadian heating engineering. 1 CHU/(h·ft²) ≈ 5.6783 W/m² = (9/5) × BTU(IT)/(h·ft²).
About International table BTU per second per square foot
The international table BTU per second per square foot (BTU(IT)/(s·ft²)) equals 1055.05585262/0.09290304 ≈ 11357 W/m² (= 3600 × BTU(IT)/(h·ft²)). Used for extreme heat flux: atmospheric re-entry aerodynamic heating, solid rocket nozzle throat, and nuclear reactor thermal hydraulics design. 1 BTU(IT)/(s·ft²) ≈ 11357 W/m².
Quick Reference Table
| Celsius Heat Unit per hour per square foot (CHU/(h·ft²)) | International table BTU per second per square foot (BTU(IT)/(s·ft²)) |
|---|---|
| 1 CHU/(h·ft²) | 0.0005 BTU(IT)/(s·ft²) |
| 2 CHU/(h·ft²) | 0.001 BTU(IT)/(s·ft²) |
| 5 CHU/(h·ft²) | 0.0025 BTU(IT)/(s·ft²) |
| 10 CHU/(h·ft²) | 0.005 BTU(IT)/(s·ft²) |
| 25 CHU/(h·ft²) | 0.0125 BTU(IT)/(s·ft²) |
| 50 CHU/(h·ft²) | 0.025 BTU(IT)/(s·ft²) |
| 100 CHU/(h·ft²) | 0.05 BTU(IT)/(s·ft²) |