Convert Celsius Heat Unit per hour per square foot per degree Celsius to International table BTU per hour per square foot per degree Fahrenheit
Convert Celsius Heat Unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) to International table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) instantly and accurately.
Conversion Formula
BTU(IT)/(h·ft²·°F) = CHU/(h·ft²·°C) × 1
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).
About International table BTU per hour per square foot per degree Fahrenheit
The international table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) equals 1055.05585262/(3600×0.09290304×5/9) ≈ 5.6783 W/(m²·K). The dominant heat transfer coefficient unit in US engineering: ASHRAE handbooks, ASTM standards, boiler and heat exchanger design, and building envelope U-values are all commonly tabulated in this unit. 1 BTU(IT)/(h·ft²·°F) ≈ 5.6783 W/(m²·K).
Quick Reference Table
| Celsius Heat Unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) | International table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) |
|---|---|
| 1 CHU/(h·ft²·°C) | 1 BTU(IT)/(h·ft²·°F) |
| 2 CHU/(h·ft²·°C) | 2 BTU(IT)/(h·ft²·°F) |
| 5 CHU/(h·ft²·°C) | 5 BTU(IT)/(h·ft²·°F) |
| 10 CHU/(h·ft²·°C) | 10 BTU(IT)/(h·ft²·°F) |
| 25 CHU/(h·ft²·°C) | 25 BTU(IT)/(h·ft²·°F) |
| 50 CHU/(h·ft²·°C) | 50 BTU(IT)/(h·ft²·°F) |
| 100 CHU/(h·ft²·°C) | 100 BTU(IT)/(h·ft²·°F) |