Fahrenheit hour per BTU
Thermal resistanceexact by definition
The Fahrenheit-hour per BTU is the customary US unit of absolute thermal resistance, equal to 1.895634 K/W. The relation is exact by definition, being the reciprocal of the exact 0.52752792631 W/K, though the decimal shown is a rounding of that exact ratio. It is the reciprocal of a UA value in BTU/(h·°F).
Watch out: Do not confuse this with the R-value of insulation, which carries an extra per-square-foot and is a different quantity type entirely. This unit is °F·h/BTU; R-value is °F·h·ft²/BTU.
| 1 | 1.8956342 |
One fahrenheit hour per btu in every thermal resistance unit
| 1,895.63 | Celsius degree per kilowatt (°C/kW) | |
| 1,895.63 | kelvin per kilowatt (K/kW) | |
| 2.20315 | Celsius hour per kilocalorie (°C·h/kcal) | |
| 1.89563 | kelvin per watt (K/W) | |
| 1.89563 | Celsius degree per watt (°C/W) | |
| 1 | Fahrenheit hour per BTU (°F·h/BTU)this unit | |
| 1 | Rankine hour per BTU (°R·h/BTU) | |
| 0.00189563 | kelvin per milliwatt (K/mW) |
Solvers that use thermal resistance