0.23 BTU/(h·ft²·°F) = 4.35 R (ft²·°F·h/BTU)
Also equals
How it works
R (ft²·°F·h/BTU) = 1 ÷ BTU/(h·ft²·°F)Fuel economy and fuel consumption are upside down from each other: the farther a car goes on its fuel, the less fuel it needs for a set distance. So instead of multiplying, divide 1 by your number. The 1 comes from 100 × 3.785411784 ÷ 1.609344. For example, 0.3 BTU/(h·ft²·°F) is about 3.333 R (ft²·°F·h/BTU).
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Divide 1 by your number
1 ÷ 0.23 = 4.35 R (ft²·°F·h/BTU) -
Nearby values
| BTU per hour-square foot-degree Fahrenheit | R-value (US) | Kilocalories per hour-square meter-degree Celsius | Watts per square meter-kelvin |
|---|---|---|---|
| 0.2 BTU/(h·ft²·°F) | 5 R (ft²·°F·h/BTU) | 0.98 | 1.14 |
| 0.21 BTU/(h·ft²·°F) | 4.76 R (ft²·°F·h/BTU) | 1.03 | 1.19 |
| 0.22 BTU/(h·ft²·°F) | 4.55 R (ft²·°F·h/BTU) | 1.07 | 1.25 |
| 0.23 BTU/(h·ft²·°F) | 4.35 R (ft²·°F·h/BTU) | 1.12 | 1.31 |
| 0.24 BTU/(h·ft²·°F) | 4.17 R (ft²·°F·h/BTU) | 1.17 | 1.36 |
| 0.25 BTU/(h·ft²·°F) | 4 R (ft²·°F·h/BTU) | 1.22 | 1.42 |
| 0.26 BTU/(h·ft²·°F) | 3.85 R (ft²·°F·h/BTU) | 1.27 | 1.48 |
Printed from rocketcalc.io/heat-transfer/u-factor-to-r-value/0.23