Page 46 - Handbook of Energy Engineering Calculations
P. 46
1. Convert the ultimate analysis to moles
A mole of any substance is an amount of the substance having a weight equal
to the molecular weight of the substance. Thus, 1 mol of carbon is 12 lb (5.4
kg) of carbon, because the molecular weight of carbon is 12. To convert an
ultimate analysis of a fuel to moles, assume that 100 lb (45 kg) of the fuel is
being considered. Set up a tabulation thus:
2. Compute the mols of oxygen for complete combustion
From Table 2, the burning of carbon to carbon dioxide requires 1 mol of
carbon and 1 mol of oxygen, yielding 1 mol of CO . Using the molal
2
equations in Table 2 for the other elements in the fuel, set up a tabulation
thus, entering the product of columns 2 and 3 in column 4:
3. Compute the mols of air for complete combustion
Set up a similar tabulation for air, thus:
