# Btu definition

Btu means a British Thermal Unit and is the amount of heat required to raise the temperature of one (1) pound of water 1° Fahrenheit at 60° Fahrenheit.

## Examples of Btu in a sentence

• Fd = Ratio of the volume of dry effluent gas to the gross calorific value of the fuel from Method 19, dsm3/J (dscf/106 Btu).

• Additionally, natural gas must either be composed of at least 70 percent methane by volume or have a gross calorific value between 34 and 43 megajoules (MJ) per dry standard cubic meter (910 and 1,150 Btu per dry standard cubic foot).

• Coal refuse means any by-product of coal mining or coal cleaning operations with an ash content greater than 50 percent (by weight) and a heating value less than 13,900 kilojoules per kilogram (kJ/kg) (6,000 Btu per pound (Btu/lb) on a dry basis.

• Fd= Ratio of the volume of dry effluent gas to the gross calorific value of the fuel from Method 19, dsm3 /J (dscf/106 Btu).

• Natural gas-fired combustion sources with heat input equal to or less than ten million (10,000,000) Btu per hour.

## More Definitions of Btu

Btu means the amount of energy required to raise the temperature of one pound of pure water one degree Fahren­heit from 59 degrees Fahrenheit to 60 degrees Fahrenheit. The term "MMBtu" means one million Btus.
Btu mean the quantity of heat required to raise the temperature of one (1) avoirdupois pound of pure water from fifty-nine degrees Fahrenheit (59°F) to sixty degrees Fahrenheit (60°F) at an absolute pressure of fourteen decimal six nine six pounds per square inch (14.696 psi).
Btu means British thermal unit, which is a measure of the amount of energy required to raise the temperature of one pound of water one degree Fahrenheit.
Btu means British thermal units, a measure of heating value.
Btu means a British Thermal Unit and is the amount of heat required to raise the temperature of one (1) pound of water 1 Fahrenheit at 600 Fahrenheit.
Btu means British Thermal Unit, the quantity of heat necessary to raise the temperature of one pound of water one degree Fahrenheit.
Btu means one British Thermal Unit, and shall be the quantity of heat required to raise the temperature of one (1) pound of water from fifty-eight and five-tenths degrees (58.5 degrees) to fifty-nine and five-tenths degrees (59.5 degrees) Fahrenheit. The reporting basis for Btu is 14.73 dry psia and