Convert Second-degree Fahrenheit per BTU to Kilokelvin per watt
Convert Second-degree Fahrenheit per BTU (s·°F/BTU) to Kilokelvin per watt (kK/W) instantly and accurately.
Conversion Formula
kK/W = s·°F/BTU × 5.265650668e-7
About Second-degree Fahrenheit per BTU
The second-degree Fahrenheit per BTU (s·°F/BTU) equals (5/9)/1055.05585262 K/W ≈ 5.265 × 10⁻⁴ K/W. Used in US aerospace and nuclear engineering where thermal transient analyses express power as BTU/s and temperature in °F, e.g. rocket engine heat rejection and reactor coolant loop calculations. 1 s·°F/BTU ≈ 5.265 × 10⁻⁴ K/W.
About Kilokelvin per watt
The kilokelvin per watt (kK/W) equals exactly 1000 K/W. Used for high thermal resistances in aerogel films, vacuum insulation panels with small contact area, and micron-scale thin-film insulation layers in microelectronics packaging. Numerically identical to °C/mW; both notations denote the same thermal resistance in different engineering contexts. 1 kK/W = 1000 K/W = 1 °C/mW.
Quick Reference Table
| Second-degree Fahrenheit per BTU (s·°F/BTU) | Kilokelvin per watt (kK/W) |
|---|---|
| 1 s·°F/BTU | 5.266 × 10-7 kK/W |
| 2 s·°F/BTU | 1.053 × 10-6 kK/W |
| 5 s·°F/BTU | 2.633 × 10-6 kK/W |
| 10 s·°F/BTU | 5.266 × 10-6 kK/W |
| 25 s·°F/BTU | 1.316 × 10-5 kK/W |
| 50 s·°F/BTU | 2.633 × 10-5 kK/W |
| 100 s·°F/BTU | 5.266 × 10-5 kK/W |