Convert Thermochemical calorie per hour per square centimetre per degree Celsius to International table BTU per hour per square foot per degree Fahrenheit
Convert Thermochemical calorie per hour per square centimetre per degree Celsius (cal(th)/(h·cm²·°C)) to International table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) instantly and accurately.
Conversion Formula
BTU(IT)/(h·ft²·°F) = cal(th)/(h·cm²·°C) × 2.04679169
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).
About International table BTU per hour per square foot per degree Fahrenheit
The international table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) equals 1055.05585262/(3600×0.09290304×5/9) ≈ 5.6783 W/(m²·K). The dominant heat transfer coefficient unit in US engineering: ASHRAE handbooks, ASTM standards, boiler and heat exchanger design, and building envelope U-values are all commonly tabulated in this unit. 1 BTU(IT)/(h·ft²·°F) ≈ 5.6783 W/(m²·K).
Quick Reference Table
| Thermochemical calorie per hour per square centimetre per degree Celsius (cal(th)/(h·cm²·°C)) | International table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) |
|---|---|
| 1 cal(th)/(h·cm²·°C) | 2.04679 BTU(IT)/(h·ft²·°F) |
| 2 cal(th)/(h·cm²·°C) | 4.09358 BTU(IT)/(h·ft²·°F) |
| 5 cal(th)/(h·cm²·°C) | 10.234 BTU(IT)/(h·ft²·°F) |
| 10 cal(th)/(h·cm²·°C) | 20.4679 BTU(IT)/(h·ft²·°F) |
| 25 cal(th)/(h·cm²·°C) | 51.1698 BTU(IT)/(h·ft²·°F) |
| 50 cal(th)/(h·cm²·°C) | 102.34 BTU(IT)/(h·ft²·°F) |
| 100 cal(th)/(h·cm²·°C) | 204.679 BTU(IT)/(h·ft²·°F) |