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A BTU is a measurement of the quantity of heat required to raise the temperature of ____ of water by 1 degree Fahrenheit
1 pound
When API is more than 10, the fuel is ____ than water
Less dense
A therm is a unit used to measure the heat content of natural gas and is equal to ____ BTU
100,000
____ coal, or soft coal, is a geologically younger coal that contains a low percentage of fixed carbon and a high percentage of volatile gas
Bituminous
A ____ furnace mixes burnable material, such as biomass, with fossil fuel for combustion
Cofiring
____ consists of 40% to 60% methane, depending on the makeup of the constituents forming the gas from the waste
Landfill gas
____ combustion occurs when all of the fuel is burned using only the theoretical amount of air
Perfect
____ air is supplied to a burner to atomize fuel oil or convey pulverized coal and control the rate of combustion
Primary
In combustion, the fuel combines with oxygen in the air to form carbon dioxide, ____, and traces of other compounds
Water
Carbon monoxide in the gases of combustion indicates ____
Incomplete combustion
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