Convert Watt per square metre kelvin to Celsius Heat Unit per hour per square foot per degree Celsius
Convert Watt per square metre kelvin (W/(m²·K)) 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) = W/(m²·K) × 0.1761101837
About Watt per square metre kelvin
The watt per square metre kelvin (W/(m²·K)) is the SI coherent unit for heat transfer coefficient (ISO 80000-5). Typical values: free convection in still air 2-25 W/(m²·K), forced-air cooling 25-250 W/(m²·K), natural water convection 200-1000 W/(m²·K), forced water up to 10 000 W/(m²·K), nucleate boiling up to 100 000 W/(m²·K). 1 W/(m²·K) = 1 J/(s·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
| Watt per square metre kelvin (W/(m²·K)) | Celsius Heat Unit per hour per square foot per degree Celsius (CHU/(h·ft²·°C)) |
|---|---|
| 1 W/(m²·K) | 0.17611 CHU/(h·ft²·°C) |
| 2 W/(m²·K) | 0.35222 CHU/(h·ft²·°C) |
| 5 W/(m²·K) | 0.880551 CHU/(h·ft²·°C) |
| 10 W/(m²·K) | 1.7611 CHU/(h·ft²·°C) |
| 25 W/(m²·K) | 4.40275 CHU/(h·ft²·°C) |
| 50 W/(m²·K) | 8.80551 CHU/(h·ft²·°C) |
| 100 W/(m²·K) | 17.611 CHU/(h·ft²·°C) |