HW_1%20Solutions

HW_1%20Solutions - CE 108 Homework #1 Solutions 1. (a)...

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CE 108 Homework #1 Solutions 1. (a) Calculate flame temperature for the combustion of gasoline (CH 2 ) CH 2 + 1.5 O 2 + 6 N 2 → CO 2 + H 2 O + 6 N 2 Energy Balance: (i=reactants; j=products) (*) Calculate using the lower heating value: Calculate using equation (*):
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(b) Calculate and plot exhaust gas composition for fuel-rich and excess air conditions Excess air conditions: CH 2 +1.5λ O 2 + 6λ N 2 → CO 2 + H 2 O + 6λ N 2 + 1.5(λ – 1) O 2 Calculate exhaust gas composition by plugging in appropriate values of λ Fuel-rich conditions: CH 2 +1.5λ O 2 + 6λ N 2 → a CO + b CO 2 + c H 2 + d H 2 O + 6λ N 2 C-balance: a + b = 1 H-balance: c + d = 1 O-balance: a + 2b + d = 3λ WGS reaction: Using algebra to solve for a, b, and c in terms of d and λ: Substitute a, b, and c into WGS equation: (**) Solve equation (**) for d for each value of λ. This will allow for the calculation of a, b, and c as well. Air/Fuel Ratio
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This note was uploaded on 09/17/2009 for the course CE 108 taught by Professor Harley during the Fall '09 term at Berkeley.

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HW_1%20Solutions - CE 108 Homework #1 Solutions 1. (a)...

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