Convert International table BTU per second per square foot per degree Fahrenheit to Celsius Heat Unit per hour per square foot per degree Celsius
Convert International table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) to Celsius Heat Unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) instantly and accurately.
Conversion Formula
CHU/(h·ft²·°C) = BTU(IT)/(s·ft²·°F) × 3600
About International table BTU per second per square foot per degree Fahrenheit
The international table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) equals ≈ 20442 W/(m²·K) (= 3600 × BTU(IT)/(h·ft²·°F)). Encountered in atmospheric re-entry aerodynamic heating analysis, solid rocket motor nozzle throat design, and nuclear reactor thermal-hydraulics with peak surface heat transfer rates. 1 BTU(IT)/(s·ft²·°F) ≈ 20442 W/(m²·K).
About Celsius Heat Unit per hour per square foot per degree Celsius
The Celsius heat unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) equals ≈ 5.6783 W/(m²·K) - numerically identical to BTU(IT)/(h·ft²·°F). Used in UK and Canadian steam and process engineering; the temperature-interval ratio °F/°C = 5/9 is exactly compensated by the energy ratio CHU/BTU(IT) = 9/5, making both units numerically equal. 1 CHU/(h·ft²·°C) = 1 BTU(IT)/(h·ft²·°F) ≈ 5.6783 W/(m²·K).
Quick Reference Table
| International table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) | Celsius Heat Unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) |
|---|---|
| 1 BTU(IT)/(s·ft²·°F) | 3600 CHU/(h·ft²·°C) |
| 2 BTU(IT)/(s·ft²·°F) | 7200 CHU/(h·ft²·°C) |
| 5 BTU(IT)/(s·ft²·°F) | 18000 CHU/(h·ft²·°C) |
| 10 BTU(IT)/(s·ft²·°F) | 36000 CHU/(h·ft²·°C) |
| 25 BTU(IT)/(s·ft²·°F) | 90000 CHU/(h·ft²·°C) |
| 50 BTU(IT)/(s·ft²·°F) | 180000 CHU/(h·ft²·°C) |
| 100 BTU(IT)/(s·ft²·°F) | 360000 CHU/(h·ft²·°C) |