Convert International table BTU per second per square foot per degree Fahrenheit to Thermochemical calorie per hour per square centimetre per degree Celsius
Convert International table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) to Thermochemical calorie per hour per square centimetre per degree Celsius (cal(th)/(h·cm²·°C)) instantly and accurately.
Conversion Formula
cal(th)/(h·cm²·°C) = BTU(IT)/(s·ft²·°F) × 1758.850213
About International table BTU per second per square foot per degree Fahrenheit
The international table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) equals ≈ 20442 W/(m²·K) (= 3600 × BTU(IT)/(h·ft²·°F)). Encountered in atmospheric re-entry aerodynamic heating analysis, solid rocket motor nozzle throat design, and nuclear reactor thermal-hydraulics with peak surface heat transfer rates. 1 BTU(IT)/(s·ft²·°F) ≈ 20442 W/(m²·K).
About Thermochemical calorie per hour per square centimetre per degree Celsius
The thermochemical calorie per hour per square centimetre per degree Celsius (cal(th)/(h·cm²·°C)) equals 4.184/0.36 ≈ 11.622 W/(m²·K) (1 cal(th) = 4.184 J; 1 cm² = 10⁻⁴ m²). A CGS-derived unit found in older heat transfer textbooks and chemical engineering publications, especially in Eastern European and Japanese technical literature. 1 cal(th)/(h·cm²·°C) ≈ 11.622 W/(m²·K).
Quick Reference Table
| International table BTU per second per square foot per degree Fahrenheit (BTU(IT)/(s·ft²·°F)) | Thermochemical calorie per hour per square centimetre per degree Celsius (cal(th)/(h·cm²·°C)) |
|---|---|
| 1 BTU(IT)/(s·ft²·°F) | 1758.85 cal(th)/(h·cm²·°C) |
| 2 BTU(IT)/(s·ft²·°F) | 3517.7 cal(th)/(h·cm²·°C) |
| 5 BTU(IT)/(s·ft²·°F) | 8794.25 cal(th)/(h·cm²·°C) |
| 10 BTU(IT)/(s·ft²·°F) | 17588.5 cal(th)/(h·cm²·°C) |
| 25 BTU(IT)/(s·ft²·°F) | 43971.3 cal(th)/(h·cm²·°C) |
| 50 BTU(IT)/(s·ft²·°F) | 87942.5 cal(th)/(h·cm²·°C) |
| 100 BTU(IT)/(s·ft²·°F) | 175885 cal(th)/(h·cm²·°C) |