W·h/K
watt-hour per kelvin
Heat capacityexact by definition
The watt-hour per kelvin is exactly 3600 J/K. Building services use it because heat loads are in watts and a thermal mass expressed in W·h/K tells you directly how many hours of load the mass will absorb per degree of drift.
| 1 W·h/K | 3,600 J/K |