Question

Calculate gross and net calorific value of coal sample having following composition:

C = 80 %; H = 3.5 %; S = 2.8 %; O = 5.0 %; N = 1.5%, and rest ash. 

Answer 1

$GCV=32052.3kj/kg$$$

$NCV=GCV- 989.82$

$=31062.48kj/kg$