Liquid petroleum gas (LPG) is used to fuel spark- ignition engines. A typical sample of the fuel consists of 70 percent by volume propane CH 5 percent by volume butane CH 4' 3 10 25 percent by volume propene CH 3 8 6 The higher heating values of the fuels are propane, 50.38M-g; butane, 49.56 M½-g; propylene (propene k ). 48.95M-8 k k a) Work out the overall combustion reaction for stoichiometric combustion of I mole of LPG with air and stoichiometric F/A and A/F b) What are the higher and lower heating values for combustion of this fuel with excess air, per unit mass LPG?

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Liquid petroleum gas (LPG) is used to fuel spark-
ignition engines. A typical sample of the fuel consists of
70 percent by volume propane CH
5 percent by volume butane CH
4'
3
10
25 percent by volume propene CH
3
8
6
The higher heating values of the fuels are propane,
50.38M-g; butane, 49.56 M½-g; propylene (propene
k
). 48.95M-8
k
k
a) Work out the overall combustion reaction for
stoichiometric combustion of I mole of LPG with air
and stoichiometric F/A and A/F
b) What are the higher and lower heating values for
combustion of this fuel with excess air, per unit mass
LPG?
Transcribed Image Text:Liquid petroleum gas (LPG) is used to fuel spark- ignition engines. A typical sample of the fuel consists of 70 percent by volume propane CH 5 percent by volume butane CH 4' 3 10 25 percent by volume propene CH 3 8 6 The higher heating values of the fuels are propane, 50.38M-g; butane, 49.56 M½-g; propylene (propene k ). 48.95M-8 k k a) Work out the overall combustion reaction for stoichiometric combustion of I mole of LPG with air and stoichiometric F/A and A/F b) What are the higher and lower heating values for combustion of this fuel with excess air, per unit mass LPG?
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