Convert Watt per square metre kelvin to Thermochemical kilocalorie per hour per square metre per degree Celsius
Convert Watt per square metre kelvin (W/(m²·K)) 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) = W/(m²·K) × 0.8604206501
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 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
| Watt per square metre kelvin (W/(m²·K)) | Thermochemical kilocalorie per hour per square metre per degree Celsius (kcal(th)/(h·m²·°C)) |
|---|---|
| 1 W/(m²·K) | 0.860421 kcal(th)/(h·m²·°C) |
| 2 W/(m²·K) | 1.72084 kcal(th)/(h·m²·°C) |
| 5 W/(m²·K) | 4.3021 kcal(th)/(h·m²·°C) |
| 10 W/(m²·K) | 8.60421 kcal(th)/(h·m²·°C) |
| 25 W/(m²·K) | 21.5105 kcal(th)/(h·m²·°C) |
| 50 W/(m²·K) | 43.021 kcal(th)/(h·m²·°C) |
| 100 W/(m²·K) | 86.0421 kcal(th)/(h·m²·°C) |