Convert International table BTU per hour per square foot to Thermochemical calorie per second per square centimetre
Convert International table BTU per hour per square foot (BTU(IT)/(h·ft²)) to Thermochemical calorie per second per square centimetre (cal(th)/(s·cm²)) instantly and accurately.
Conversion Formula
cal(th)/(s·cm²) = BTU(IT)/(h·ft²) × 7.539652832e-5
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 calorie per second per square centimetre
The thermochemical calorie per second per square centimetre (cal(th)/(s·cm²)) equals exactly 41840 W/m² (1 cal(th) = 4.184 J; 1 cm² = 10⁻⁴ m²). The CGS unit for very high heat flux: ablation heat flux during atmospheric re-entry ≈ 1-100 cal/(s·cm²). Used in plasma physics and aerospace thermal protection. 1 cal(th)/(s·cm²) = 41840 W/m².
Quick Reference Table
| International table BTU per hour per square foot (BTU(IT)/(h·ft²)) | Thermochemical calorie per second per square centimetre (cal(th)/(s·cm²)) |
|---|---|
| 1 BTU(IT)/(h·ft²) | 7.54 × 10-5 cal(th)/(s·cm²) |
| 2 BTU(IT)/(h·ft²) | 0.000150793 cal(th)/(s·cm²) |
| 5 BTU(IT)/(h·ft²) | 0.000376983 cal(th)/(s·cm²) |
| 10 BTU(IT)/(h·ft²) | 0.000753965 cal(th)/(s·cm²) |
| 25 BTU(IT)/(h·ft²) | 0.00188491 cal(th)/(s·cm²) |
| 50 BTU(IT)/(h·ft²) | 0.00376983 cal(th)/(s·cm²) |
| 100 BTU(IT)/(h·ft²) | 0.00753965 cal(th)/(s·cm²) |