Convert International table BTU per hour per square foot per degree Fahrenheit to Milliwatt per square metre kelvin
Convert International table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) to Milliwatt per square metre kelvin (mW/(m²·K)) instantly and accurately.
Conversion Formula
mW/(m²·K) = BTU(IT)/(h·ft²·°F) × 5678.263341
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).
About Milliwatt per square metre kelvin
The milliwatt per square metre kelvin (mW/(m²·K)) equals 10⁻³ W/(m²·K). Used in thermal characterization of advanced superinsulation panels and cryogenic multilayer insulation (MLI) in space applications, where effective heat transfer coefficients as low as 0.5-5 mW/(m²·K) are achieved in high-vacuum multilayer systems. 1 mW/(m²·K) = 10⁻³ W/(m²·K).
Quick Reference Table
| International table BTU per hour per square foot per degree Fahrenheit (BTU(IT)/(h·ft²·°F)) | Milliwatt per square metre kelvin (mW/(m²·K)) |
|---|---|
| 1 BTU(IT)/(h·ft²·°F) | 5678.26 mW/(m²·K) |
| 2 BTU(IT)/(h·ft²·°F) | 11356.5 mW/(m²·K) |
| 5 BTU(IT)/(h·ft²·°F) | 28391.3 mW/(m²·K) |
| 10 BTU(IT)/(h·ft²·°F) | 56782.6 mW/(m²·K) |
| 25 BTU(IT)/(h·ft²·°F) | 141957 mW/(m²·K) |
| 50 BTU(IT)/(h·ft²·°F) | 283913 mW/(m²·K) |
| 100 BTU(IT)/(h·ft²·°F) | 567826 mW/(m²·K) |