My question is number A4) a) above. Thanks. Consider a proposal to price gasolin
ID: 1996679 • Letter: M
Question
My question is number A4) a) above. Thanks.
Consider a proposal to price gasoline based on energy content, rather than by volume. Assume regular gas is generally E10 (10% ethanol by volume) and has a pump price of 0.784 $/L. Premium gasoline generally contains no ethanol and costs 0.924 $/L Determine the price [$/kJ] for each fuel grade. Compare the % difference between volume pricing and energy pricing for the grades. Calculate the stoichiometric A/F ratio for the following fuels (assume standard air and complete combustion): a) Diesel (Dodecane) -C_12H_26 (Liquid) b) Acetylene gas - C_2H_2 d) Wood - Solid - C_6H_10O_5 Propane [C_3H_8] is burnt with air. For each case, obtain the balanced reaction equation for complete combustion a) with the theoretical amount of air. b) With 25% excess air. c) With 15% deficiency air and only 95% of the propane being supplied is consumed. A4) Determine the ratio of CO_2 produced to MJ of energy released [kgCO_2/MJ_f) for the following fuels: a) thermal coal (lignite) b) Propane c) Methane A5) Confirm the measured A/F ratio of 15.14 for a gasoline engine, when the products of combustion (by % dry volume) are measured to be CO_2 = 14.7, CO = 0.07, O_2 = 1.1. If this vehicle has a fuel economy of 7.6 L/100 km, how much CO_2 (kg) is produced per 100 km driven? Also, what is the lambda (lambda) value for the engine at these conditions?Explanation / Answer
Calorific Value off Thermal Coal or Lignite is 16.08 MJ/kg
Emission of CO2 by Lignite is 1226.25 kg / short ton= 1226.25/907.15= 1.3517kg CO2/kg
Ratio of CO2 produced / MJ of energy is 1.3517/16.08 = 0.084 kgCO2/MJ
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