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- Determine the equivalence ratio for the complete combustion of n-Butane (C4H10) with 50% excess air.One mole of C3H8, is burned with an unknown amount of air during a combustion process. An analysis of the combustion products shows that the combustion is complete and there 3 moles of free O2, in the products. Determine; - a. the actual air-fuel ration b. the equivalence ratio c. the percentage of theoretical air used during this process.Propane is burned with dry air. A volumetric analysis of the products of combustionreveals the following volume percent composition on a dry basis, 8% CO2, 0.5% CO,7% O2, and 84% N2. Determine the percent of theoretical air used in the combustionprocess.
- Calculate the amount of air in kg necessary for combustion of 1 kg of octane (C8H18) with 30 % excess air Select the correct answer below: 1.75 15.22 10.59 19.65Acetylene (C2H2) is burned with the stoichiometric amount of air during a combustion process. Assume complete combustion. Part A Determine the air-fuel ratio on a mass basis. Part B Determine the air-fuel ratio on a mole basis. Part C What-if scenario: What would the air to fuel ratio on a mass basis be if propene (C3H6) was burned instead of acetylene?An ordinary octane gasoline (C8H18) is to burn inside an internal combustionengine cylinder with 50 % excess air. a) Show the actual combustion equation. b)Determine the actual air fuel ratio. c) Determine the mass of wet products of combustionper kg and the mass of dry products of combustion per kg fuel
- If one mole of air/fuel mixture (rigid diatomic gas) is initially at 20◦C, is compressed and expanded 7-fold as part of the Otto cycle, and 4 kJ of heat is generated by burning the air/fuel mixture, calculate: (i) the temperature after each stage of the Otto cycle; (ii) the heat absorbed/expelled during each stage of the cycle; and (iii) the efficiency of the Otto cycle.How do you account for the existence of both complete and incomplete combustion? Explain.Propal alcohol (C3H7OH) is burned with 50 percent excess air. Write the balanced reaction equation for complete combustion and determine the air-to-fuel ratio.
- Determine the air fuel ratio on both a molar and mass basis for the complete combustion of Octane (C8H18) with: (a) the theoretical amount of air. ( b) 50% excess air.A gaseous fuel with 80% butane, 15% nitrogen and 5% oxygen (on a mole basis) is burned to completion with 120 percent theoretical air that enters the combustion chamber at 30°C and 100 kPa. Determine the volume flow rate of air required to burn fuel at a rate of 2 kg/min.Forty kilograms of methane gas per minute is burned with dry air in heating furnace. The volumetric analysis of the products on a dry basis is 5.20% carbon dioxide, 0.33% carbon monoxide, 11.24% oxygen, and 83.23% nitrogen. Calculate the minimum duct diameter, in mm, used to supply the combustion air at 1 bar and 27 deg C and at a flow velocity of 15 m/s.