Convert International table BTU per hour per square foot to Thermochemical kilocalorie per hour per square centimetre
Convert International table BTU per hour per square foot (BTU(IT)/(h·ft²)) to Thermochemical kilocalorie per hour per square centimetre (kcal(th)/(h·cm²)) instantly and accurately.
Conversion Formula
kcal(th)/(h·cm²) = BTU(IT)/(h·ft²) × 0.000271427502
About International table BTU per hour per square foot
The international table BTU per hour per square foot (BTU(IT)/(h·ft²)) equals 1055.05585262/(3600×0.09290304) ≈ 3.15459 W/m². The standard US heat flux unit in ASHRAE, ASTM, and building codes for thermal resistance (R-value), boiler ratings, and heat exchanger design. 1 BTU(IT)/(h·ft²) ≈ 3.15459 W/m².
About Thermochemical kilocalorie per hour per square centimetre
The thermochemical kilocalorie per hour per square centimetre (kcal(th)/(h·cm²)) equals 4184/(3600×10⁻⁴) ≈ 11622 W/m² (= 10⁴ × kcal(th)/(h·m²)). A high-flux variant of the metric heat flux unit found in older combustion engineering and furnace design references. 1 kcal(th)/(h·cm²) ≈ 11622 W/m².
Quick Reference Table
| International table BTU per hour per square foot (BTU(IT)/(h·ft²)) | Thermochemical kilocalorie per hour per square centimetre (kcal(th)/(h·cm²)) |
|---|---|
| 1 BTU(IT)/(h·ft²) | 0.000271428 kcal(th)/(h·cm²) |
| 2 BTU(IT)/(h·ft²) | 0.000542855 kcal(th)/(h·cm²) |
| 5 BTU(IT)/(h·ft²) | 0.00135714 kcal(th)/(h·cm²) |
| 10 BTU(IT)/(h·ft²) | 0.00271428 kcal(th)/(h·cm²) |
| 25 BTU(IT)/(h·ft²) | 0.00678569 kcal(th)/(h·cm²) |
| 50 BTU(IT)/(h·ft²) | 0.0135714 kcal(th)/(h·cm²) |
| 100 BTU(IT)/(h·ft²) | 0.0271428 kcal(th)/(h·cm²) |