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Standard grades coal heat values.
Approximate Lower Heating values of standard grades of coal:
Standard Grade Coal - Heat Values
|Coal Grade||Heating Value|
|Anthracite ||12910 ||30080 |
|Semi-Anthracite ||13770 ||32084 |
|Low-volatile bituminous ||14340 ||33412 |
|Medium-volatile bituminous ||13840 ||32247 |
|High-volatile bituminous A ||13090 ||30499 |
|High-volatile bituminous B ||12130 ||28262 |
|High-volatile bituminous C ||10750 ||25047 |
|Sub-bituminous B ||9150 ||21319 |
|Sub-bituminous C ||8940 ||20830 |
|Lignite ||6900 ||16077 |
- Anthracite Coal is very shiny, hard black coal, high carbon content and energy density, repels moisture, for domestic industrial uses, including smokeless fuel
- Bituminous Coal is softer and shiny, moisture content is 8 -20%, possible for coking coals, volatile matter from 16% - 40%, can be used for thermal or metallurgical applications
- Sub-bituminous Coal is soft and black with energy density lower than bituminous coal, most common type for electricity generation
- Lignite Coal is light brown with high moisture content and low energy density, used mainly for electricity generation
- Boiler house topics, fuels like oil, gas, coal, wood - chimneys, safety valves, tanks - combustion efficiency.
- Anthracite coal is available in a number of different grades.
- Classification of coal based on volatile matter and cooking power of clean material.
- Environmental emission of carbon dioxide CO2 when combustion fuels like coal, oil, natural gas, LPG and bio energy.
- Combustion heat values of some foods.
- Net (low) and gross (high) energy content in fossil and alternative fuels.
- Autoignition points for fuels and chemicals like butane, coke, hydrogen, petroleum and more.
- Chemical composition of gaseous fuels like coal gas, natural gas, propane and more.
- The gross (high) and net (low) heating values.
- Emission of Nitrogen Oxides - NOx - with combustion of fuels like oil, coal, propane and more.
- Common solids - like brick, cement, glass and many more - and their specific heats - in Imperial and SI units.
- Coal stokers classified on basis of coal burning capacities.
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