British thermal unit (Btu)

by | Jul 30, 2000 | Green Terms "B"

British thermal unit (Btu): the amount of heat required to raise the temperature of 1 pound of liquid 1 ºF. A single gallon of propane contains 91,600 Btu. A cord of wood contains 12 million to 33 million Btu, depending on the type of wood.