Convert Watt-hour per kilogram kelvin to Thermochemical BTU per pound per degree Fahrenheit
Convert Watt-hour per kilogram kelvin (Wh/(kg·K)) to Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) instantly and accurately.
Conversion Formula
BTU(th)/(lb·°F) = Wh/(kg·K) × 0.8604206501
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).
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).
Quick Reference Table
| Watt-hour per kilogram kelvin (Wh/(kg·K)) | Thermochemical BTU per pound per degree Fahrenheit (BTU(th)/(lb·°F)) |
|---|---|
| 1 Wh/(kg·K) | 0.860421 BTU(th)/(lb·°F) |
| 2 Wh/(kg·K) | 1.72084 BTU(th)/(lb·°F) |
| 5 Wh/(kg·K) | 4.3021 BTU(th)/(lb·°F) |
| 10 Wh/(kg·K) | 8.60421 BTU(th)/(lb·°F) |
| 25 Wh/(kg·K) | 21.5105 BTU(th)/(lb·°F) |
| 50 Wh/(kg·K) | 43.021 BTU(th)/(lb·°F) |
| 100 Wh/(kg·K) | 86.0421 BTU(th)/(lb·°F) |