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Methane gas is burned with 30 percent excess air. This fuel enters a steady-flow combustor at 0.9 atm and 25'C...
Methane gas is burned with 30 percent excess air. This fuel enters a steady-flow combustor at 0.9 atm and 25'C and is mixed with the air. The products of combustion leave this reactor at 0.9 atm and 1600 K. Determine the equilibrium composition of the products of combustion and the amount of heat released by this combustion in kJ/kmol methane. Use data from the tables. CH4 Combustion 25℃ CO, HO 1600 K 30%acess 25 C The amount of carbon dioxide...
Note: Do not use any HHV values listed in a table. Calculate your own value but...
Note: Do not use any HHV values listed in a table. Calculate
your own value but feel free to use a listed value as a sanity
check!
Please show all work and use the tables provided
2) (14 pts) Write the balanced reaction equation for the stoichiometric, complete combustion of propane, C3H8, in air. Determine (a) the mass and mole fractions of fuel, oxygen, and nitrogen in the reactants, (b) the mass and mole fractions of carbon dioxide, water vapor,...
Question 4: One kmol of ethane (C2H6) is bull with an unknown amount of air during...
Question 4: One kmol of ethane (C2H6) is bull with an unknown amount of air during a combustion process. An analysis of the combustion products reveals that the combustion is complete and there are 3 kmol of free 02 in the products. Determine (a) the air-fuel ratio, and (b) the percentage of theoretical air used during this process. Assume the composition of air in molar percentage as 21% oxygen and 79% nitrogen as general. Please Note: Molecular weight of Hydrogen...
4. a. (18 points) Ethane (CH) is burned with dry air, giving the products having a...
4. a. (18 points) Ethane (CH) is burned with dry air, giving the products having a molar analysis on a dry basis: CO2, 7.8%; CO, 0.2%, 02, 7%; N2, 85% (actual combustion). Determine: (3 points each) (a) the stoichiometric air-fuel ratio. (b) the actual air fuel ratio on molar and mass bases based on the given products of combustion. (c) the gravimetric wet analysis (mass fractions) of the products of the actual combustion. (d) the gas constant of the products...
Question 3 Consider the following combustion reaction of butane (C4H10): C,H,+ 13 02 2 → 4C0,...
Question 3 Consider the following combustion reaction of butane (C4H10): C,H,+ 13 02 2 → 4C0, +5H,0 a) Case I: 25 kmol/h of C4H10 and 1750 kmol/h of air is fed to the reactor. Determine the percentage excess air used. You may assume that the air contains 21% oxygen (O2) and 79% nitrogen (N2) (on a mole basis). [15 marks] b) Case II: 125 kmol/h of C4H10 and oxygen (O2) is fed to the reactor. The product stream leaving the...
Consider the following combustion reaction of butane (C4H10): 13 C.H. + 02 → 4C0, +5H,0 2...
Consider the following combustion reaction of butane (C4H10): 13 C.H. + 02 → 4C0, +5H,0 2 a) Case l: 25 kmol/h of C4H10 and 1750 kmol/h of air is fed to the reactor. Determine the percentage excess air used. You may assume that the air contains 21% oxygen (O2) and 79% nitrogen (N2) (on a mole basis). [15 marks] b) Case II: 125 kmol/h of C4H10 and oxygen (O2) is fed to the reactor. The product stream leaving the reactor...
A2. Ethylene vapour C2H4 at 27°C is burned in a combustion chamber with 15% excess air, which is also supplied at 27 °C. The temperature and pressure of the products of combustion are 640 °C and 1.1...
A2. Ethylene vapour C2H4 at 27°C is burned in a combustion chamber with 15% excess air, which is also supplied at 27 °C. The temperature and pressure of the products of combustion are 640 °C and 1.1 bar respectively. The heat released in the combustion chamber is used to heat oil. The combustion chamber is well insulated (a) Obtain the stoichiometric and the actual chemical equation for this process [1596] [1096] (b) The air fuel ratio by mass for the...
An air-breathing gas-turbine jet engine operates at SSSF with complete combustion of 1 kmol / s of liquid ethanol fuel (C₂H₅OH)
An air-breathing gas-turbine jet engine operates at SSSF with complete combustion of 1 kmol / s of liquid ethanol fuel (C₂H₅OH). The given air-fuel ratio is 33 kg-air/kg-fuel. The constant pressure combustion process (2 → 3) results in a small amount of heat transfer out to the surroundings. Assume the inlet air is composed of 21 % O₂ and 79 % N₂(1 O₂+3.76 N₂)FIND the theoretical air-fuel ratio, AFTHEORETICAL= _______ kg-air/kg-fuelFIND the concentration of CO₂ in the exhaust gas on...
QUESTION 3 (25 MARKS In a power plant boiler, coal which has an ultimate analysis by...
QUESTION 3 (25 MARKS In a power plant boiler, coal which has an ultimate analysis by mass of 39.25 percent C, 6.93 percent H2, 41.11 percent 02, 0.72 percent N2, 0.79 percent S, and 11.20 percent Ash (non-combustibles) is burned steadily with 40% excess air. Assuming the combustion process as complete and treating the air as dry air, determine: (a) The balanced combustion equation for the combustion process. [6 Marks] (6) The Air-Fuel ratio [6 Marks) (c) The heat transfer...
Question 5 Calcium oxide (Lime) is usually produced by heating and decomposing limestone (CaCO3), cheap and abundant mi...
Question 5 Calcium oxide (Lime) is usually produced by heating and decomposing limestone (CaCO3), cheap and abundant mineral, in a process: CaCO3 (s)CaO (s) CO2 (g) a) Limestone at 25°C is fed to a continuous calcination reactor. The calcination is complete, and the products leave at 900 °C. Taking 1 metric ton (1000 kg) of limestone as a basis and elemental species [Ca(s), C(s), O2(g)] at 25°C as references for enthalpy calculations prepare and fill in an inlet-outlet enthalpy table...
Methane gas is burned with 30 percent excess air. This fuel enters a steady-flow combustor at 0.9 atm and 25'C and is mixed with the air. The products of combustion leave this reactor at 0.9 atm and 1600 K. Determine the equilibrium composition of the products of combustion and the amount of heat released by this combustion in kJ/kmol methane. Use data from the tables. CH4 Combustion 25℃ CO, HO 1600 K 30%acess 25 C The amount of carbon dioxide...
Note: Do not use any HHV values listed in a table. Calculate
your own value but feel free to use a listed value as a sanity
check!
Please show all work and use the tables provided
2) (14 pts) Write the balanced reaction equation for the stoichiometric, complete combustion of propane, C3H8, in air. Determine (a) the mass and mole fractions of fuel, oxygen, and nitrogen in the reactants, (b) the mass and mole fractions of carbon dioxide, water vapor,...
Question 4: One kmol of ethane (C2H6) is bull with an unknown amount of air during a combustion process. An analysis of the combustion products reveals that the combustion is complete and there are 3 kmol of free 02 in the products. Determine (a) the air-fuel ratio, and (b) the percentage of theoretical air used during this process. Assume the composition of air in molar percentage as 21% oxygen and 79% nitrogen as general. Please Note: Molecular weight of Hydrogen...
4. a. (18 points) Ethane (CH) is burned with dry air, giving the products having a molar analysis on a dry basis: CO2, 7.8%; CO, 0.2%, 02, 7%; N2, 85% (actual combustion). Determine: (3 points each) (a) the stoichiometric air-fuel ratio. (b) the actual air fuel ratio on molar and mass bases based on the given products of combustion. (c) the gravimetric wet analysis (mass fractions) of the products of the actual combustion. (d) the gas constant of the products...
Question 3 Consider the following combustion reaction of butane (C4H10): C,H,+ 13 02 2 → 4C0, +5H,0 a) Case I: 25 kmol/h of C4H10 and 1750 kmol/h of air is fed to the reactor. Determine the percentage excess air used. You may assume that the air contains 21% oxygen (O2) and 79% nitrogen (N2) (on a mole basis). [15 marks] b) Case II: 125 kmol/h of C4H10 and oxygen (O2) is fed to the reactor. The product stream leaving the...
Consider the following combustion reaction of butane (C4H10): 13 C.H. + 02 → 4C0, +5H,0 2 a) Case l: 25 kmol/h of C4H10 and 1750 kmol/h of air is fed to the reactor. Determine the percentage excess air used. You may assume that the air contains 21% oxygen (O2) and 79% nitrogen (N2) (on a mole basis). [15 marks] b) Case II: 125 kmol/h of C4H10 and oxygen (O2) is fed to the reactor. The product stream leaving the reactor...
A2. Ethylene vapour C2H4 at 27°C is burned in a combustion chamber with 15% excess air, which is also supplied at 27 °C. The temperature and pressure of the products of combustion are 640 °C and 1.1 bar respectively. The heat released in the combustion chamber is used to heat oil. The combustion chamber is well insulated (a) Obtain the stoichiometric and the actual chemical equation for this process [1596] [1096] (b) The air fuel ratio by mass for the...
QUESTION 3 (25 MARKS In a power plant boiler, coal which has an ultimate analysis by mass of 39.25 percent C, 6.93 percent H2, 41.11 percent 02, 0.72 percent N2, 0.79 percent S, and 11.20 percent Ash (non-combustibles) is burned steadily with 40% excess air. Assuming the combustion process as complete and treating the air as dry air, determine: (a) The balanced combustion equation for the combustion process. [6 Marks] (6) The Air-Fuel ratio [6 Marks) (c) The heat transfer...
Question 5 Calcium oxide (Lime) is usually produced by heating and decomposing limestone (CaCO3), cheap and abundant mineral, in a process: CaCO3 (s)CaO (s) CO2 (g) a) Limestone at 25°C is fed to a continuous calcination reactor. The calcination is complete, and the products leave at 900 °C. Taking 1 metric ton (1000 kg) of limestone as a basis and elemental species [Ca(s), C(s), O2(g)] at 25°C as references for enthalpy calculations prepare and fill in an inlet-outlet enthalpy table...
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