1c What is the air to fuel ratio for this reaction on a mass basis Example

# 1c what is the air to fuel ratio for this reaction on

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1c) What is the air to fuel ratio for this reaction on a mass basis

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Example – combustion of propane and air 3/3 1d) What is the mole fraction of fuel in the reactants and what is the significance of the value?
Equivalence ratio

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Example C 5 H 12 + d(O 2 +3.76N 2 ) aCO 2 + bH 2 O + cN 2 2a) What is the global reaction for complete combustion of pentane in 75% excess air? 2b) What is the equivalence ratio for the conditions of 2a)?
Example 2c) What is the global reaction for complete combustion of pentane in 25% theoretical air?

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Example: the impact of vehicle CO 2 emissions 1/2 What were the annual CO 2 emissions from gasoline burning cars in the United States in 2000? 42 gallons in one barrel of crude oil yields 19.2 gallons of gasoline Or about 46% of a barrel of oil is converted to gasoline From Table 2.3 of Shepard and Shepard, in 2000 the U.S. used 897.4 MTOE of oil MTOE = million tonnes of oil equivalent MTOE is considered a unit of energy and mass! 1 TOE = 42 GJ BOE = barrel of oil equivalent Products Made from a Barrel of Crude Oil, 2007 (Gallons) Note: A 42-U.S. gallon barrel of crude oil yields between 44 and 45 gallons of petroleum products. These totals are greater than 42 gallons due to processing gain. Source: U.S. Energy Information Administration
Example: the impact of vehicle CO 2 emissions 2/2

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We estimated ___ billion metric tonnes of CO 2 per year. Recall: 1 metric ton = 1 tonne = 1000 kg 1 short ton = 2000 lbs 1 long ton = 2240 lbs How accurate was our estimate for CO 2 emissions from vehicles?
Where we are headed… Next steps are to understand the how fuel properties vary and then we can connect fuel use to CO 2 emissions. The relationships between fuel properties and air toxic emissions are more complex, and we will use empirical relationships for this class.
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