One Question per Day (January 15, 2018)
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In coal quality analysis, how are the air-dried basis and ash-free dried basis converted? Dried ash-free basis = Air-dried basis ÷ (1 – Ash content of air-dried basis – Moisture content of air-dried basis)
Answer: Dry ash-free basis = Air-dried basis ÷ (1 – Ash content of air-dried basis – Moisture content of air-dried basis)
Xdaf=100Xad/(100-Mad-Aad)%
Aar (dry ash-free basis) = (air-dry basis) Aad * (100 – Mf (its external moisture content)) / (100 – Mad)
Dried ash-free basis = Air-dried basis ÷ (1 – Ash content of air-dried basis – Moisture content of air-dried basis)
Is it this? Aar=Aad*(100-Mf)/(100-Mad)
Dry, anhydrous, ash-free = (1 – air dry weight – internal moisture – ash content) / air dry weight
In coal quality analysis, how are the air-dried basis and ash-free dried basis converted? Answer: Dry ash-free basis = Air-dried basis ÷ (1 – Ash content of air-dried basis – Moisture content of air-dried basis)
Xdaf=Xad*100/(100-Mad-Aad)%
Dried ash-free basis = Air-dried basis ÷ (1 – Ash content of air-dried basis – Moisture content of air-dried basis)
Dried ash-free basis = Air-dried basis ÷ (1 – Ash content of air-dried basis – Moisture content of air-dried basis)