Convert Thermochemical BTU per pound per degree Fahrenheit to Watt-hour per kilogram kelvin
Convert Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) to Watt-hour per kilogram kelvin (Wh/(kg·K)) instantly and accurately.
Conversion Formula
Wh/(kg·K) = BTU(th)/(lb·°F) × 1.162222222
About Thermochemical BTU per pound per degree Fahrenheit
The thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) equals exactly 4184 J/(kg·K) (derived: 1 BTU(th) = 1054.350264 J; /lb/°F). Numerically identical to cal(th)/(g·°C) because both are defined via the thermochemical calorie. Used in older American thermodynamic tables. Water ≈1 BTU(th)/(lb·°F). 1 BTU(th)/(lb·°F) = 4184 J/(kg·K).
About Watt-hour per kilogram kelvin
The watt-hour per kilogram kelvin (Wh/(kg·K)) equals exactly 3600 J/(kg·K). Used in battery and thermal energy storage engineering to express the heat capacity of phase-change materials (PCM), molten salts, and battery cells where energy is quantified in watt-hours. Paraffin wax ≈0.055 Wh/(kg·K). 1 Wh/(kg·K) = 3600 J/(kg·K) = 3.6 kJ/(kg·K).
Quick Reference Table
| Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) | Watt-hour per kilogram kelvin (Wh/(kg·K)) |
|---|---|
| 1 BTU(th)/(lb·°F) | 1.16222 Wh/(kg·K) |
| 2 BTU(th)/(lb·°F) | 2.32444 Wh/(kg·K) |
| 5 BTU(th)/(lb·°F) | 5.81111 Wh/(kg·K) |
| 10 BTU(th)/(lb·°F) | 11.6222 Wh/(kg·K) |
| 25 BTU(th)/(lb·°F) | 29.0556 Wh/(kg·K) |
| 50 BTU(th)/(lb·°F) | 58.1111 Wh/(kg·K) |
| 100 BTU(th)/(lb·°F) | 116.222 Wh/(kg·K) |