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ar as received basis | ad air dried basis | d dry basis
Specific Energy Conversions
For conversions between units
1 btu/lb = 0.002326 mj/kg
1 kcal/kg 0.0041868 mj/kg
1 metric ton (tonne) 1.10231 short tons
From GAR to NAR
The difference between net and gross as received (NAR v/s GAR) specific energy values is the latent heat of the water vapour which lowers the effective calorific value in the boiler. To convert from GAR to NAR for bituminous coals subtract approximately
1.09 mj/kg
260 kcal/kg
470 btu/lb
Knowledge = Power…
Coal Basics
A picture is worth a thousand words.
Select a term from the list
=coal that includes TOTAL MOISTURE, ASH, VOLATILE MATTER, and FIXED CARBON
Anthracite
Anthracite is the highest rank of coal and is characterized by low volatile matter (always less than 10%) and high carbon content. It has a semi-metallic luster and is capable of burning without smoke. Semi-anthracite is coal midway between low volatile bituminous coal and anthracite.
