Convert Celsius Heat Unit per hour per square foot per degree Celsius to Thermochemical kilocalorie per hour per square metre per degree Celsius
Convert Celsius Heat Unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) to Thermochemical kilocalorie per hour per square metre per degree Celsius (kcal(th)/(h·m²·°C)) instantly and accurately.
Conversion Formula
kcal(th)/(h·m²·°C) = CHU/(h·ft²·°C) × 4.885695035
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 Thermochemical kilocalorie per hour per square metre per degree Celsius
The thermochemical kilocalorie per hour per square metre per degree Celsius (kcal(th)/(h·m²·°C)) equals 4184/3600 ≈ 1.1622 W/(m²·K) (1 kcal(th) = 4184 J; 1 °C = 1 K). Widely used in continental European and Soviet-era building physics, HVAC standards, and heat exchanger design manuals where wall U-values were tabulated in this unit. 1 kcal(th)/(h·m²·°C) ≈ 1.1622 W/(m²·K).
Quick Reference Table
| Celsius Heat Unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) | Thermochemical kilocalorie per hour per square metre per degree Celsius (kcal(th)/(h·m²·°C)) |
|---|---|
| 1 CHU/(h·ft²·°C) | 4.8857 kcal(th)/(h·m²·°C) |
| 2 CHU/(h·ft²·°C) | 9.77139 kcal(th)/(h·m²·°C) |
| 5 CHU/(h·ft²·°C) | 24.4285 kcal(th)/(h·m²·°C) |
| 10 CHU/(h·ft²·°C) | 48.857 kcal(th)/(h·m²·°C) |
| 25 CHU/(h·ft²·°C) | 122.142 kcal(th)/(h·m²·°C) |
| 50 CHU/(h·ft²·°C) | 244.285 kcal(th)/(h·m²·°C) |
| 100 CHU/(h·ft²·°C) | 488.57 kcal(th)/(h·m²·°C) |