AIR/FUEL RATIO BY MASS
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ETHYL ALCOHOL HAS THE CHEMICAL FORMULA C2H6O. CALCULATE THE STOICHIOMETRIC AIR/FUEL RATIO BY MASS AND THE CORRESPONDING WET GRAVIMETRIC ANALYSIS OF THE PRODUCTS OF COMBUSTION.
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ETHYL ALCOHOL HAS THE CHEMICAL FORMULA C2H6O. CALCULATE THE STOICHIOMETRIC AIR/FUEL RATIO BY MASS AND THE CORRESPONDING WET GRAVIMETRIC ANALYSIS OF THE PRODUCTS OF COMBUSTION.
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Problem.
Ethyl alcohol has the chemical formula C2H6O. Calculate the stoichiometric air/fuel ratio by mass and the corresponding wet gravimetric analysis of the products of combustion.
Solution:
a) Finding the A/F ratio
We will use following notations:
Mx = molar mass (kg/kmol)
= volumetric ratio nitrogen/oxygen in the air composition
Mf = molar mass of the fuel (kg/kmol)
We consider the stoichiometric burning reaction of ethyl alcohol:
( 1)
The above coefficients will be found by simple atomic balance analysis:
- for carbon: = 2
- for ...
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