ABSTRACT
Q: How are the HHV (higher heating value) and LHV (lower heating value) of fuels
estimated when the ultimate analysis is known?
A: We can use the expressions [1]
HHV ¼ 14,500 Cþ 62,000 H2 O2 8
þ 4000 S ð1Þ
LHV ¼ HHV 9720 H2 1110W ð2Þ where W is the fraction by weight of moisture in fuel, and C;H2;O2, and S are fractions by weight of carbon, hydrogen, oxygen, and sulfur in the fuel.
