British thermal unit (39 ºF)
type: Concept
definition: Unit of heat energy according to the Imperial system of units in a reference temperature of 39 °F.
in scheme: unit-of-measure
notation: N66
dimension vector: L2 M1 T-2
rec20 quantity: heat, quantity of heat, energy, thermodynamic energy, enthalpy, Helmholtz function, Helmholtz free energy
rec20 sector: Heat
unit symbol: Btu (39 ºF)