Homework Answers
In
the first part we took 1 mol of fuel and if we take the required
amount of air(not excess)then number of mols of air is 18.5
So according to that if we take 40%of excess air we get 25.9mol of air.
In products you get oxygen because of excess air.
In general one mol of air contains 1 mol of oxygen and 3.76 mol of nitrogen and air weight is 28.97.
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n-Dodecane CHa is burned with 40% excess air during a combustion process. Assuming total combustion and...
during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150%...
during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% excess air combustion process. Assuming complete combustion and a total pressure of 14.5 psia, determine the the air fuel ratio; a. b. the dew-point temperature of the products; c. apparent molecular mass of the products d. apparent gas constant of the products...
during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% excess air combustion process. Assuming complete...
air during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with...
air during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% exces combustion process. Assuming complete combustion and a total pressure of 14.5 psia, determine the a. the air fuel ratio; b. the dew-point temperature of the products; c. apparent molecular mass of the products; d. apparent gas constant of the products...
air during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% exces combustion process. Assuming complete...
Full Solutions please. Thank you! Dodecane is burned with 50% excess air and with a molar-base...
Full Solutions please. Thank you!
Dodecane is burned with 50% excess air and with a molar-base combustion efficiency of 90%. The emissions leave the combustion chamber at a total pressure of 100 kPa. a) Calculate the mass-base and molar-base fuel-to-air ratio. (10 pts) b) Calculate the mass-base and molar-base equivalence ratio. (10 pts) c) You should get the same result for the mass-base and molar-base equivalence ratios in part (b). Prove mathematically that it was not a fluke. (10 pts)...
a) Explain the reason why heat is released when a hydrocarbon fuel is burned in a combustion chamber.
a) Explain the reason why heat is released when a hydrocarbon fuel is burned in a combustion chamber.b) Why excess air is necessary to use in an actual combustion? Explain.c) \(n\) - Dodecane \(\left(C_{12} H_{26}\right)\) in gas form is burned in a combustion chamber with \(150 \%\) excess air.Determine the following:i) the chemical reaction equation showing all reactants and products.ii) the required air to fuel ratio by mass, \(A F_{m}\left(\frac{k g \text { air }}{k g \text { fuel }}\right)\),iii)...
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...
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...
1 kmol of gas Ethane is burned with 175 percent theoretical air in a steady flow...
1 kmol of gas Ethane is burned with 175 percent theoretical air in a steady flow combustion chamber. An analysis of the combustion gases reveals that all the hydrogen in the fuel burns to H2O but 95 percent of the Carbon burns to CO2 with the remaining 5 percent forming CO. Treating the air as dry air, determine; (a)The balanced combustion equation. (b)The air-fuel ratio. (c)The amount of heat transfer (in kJ/kg of fuel) from the combustion process if the...
Answer all the questions please Problem 1 (20 pts) (No Partial Credits) i. Butane, CaHio, is burned with air at an air fuel ratio of 20. Determine the percentage of excess ii. Benzene gas, CsHi, i...
Answer all the questions please
Problem 1 (20 pts) (No Partial Credits) i. Butane, CaHio, is burned with air at an air fuel ratio of 20. Determine the percentage of excess ii. Benzene gas, CsHi, is burned with 90% theoretical air. Assuming no hydrocarbons in the products, calculate the air fuel ratio. ill. Determine the dew point temperature of the following reaction that take place where the atmospheric pressure is 100 kPa, iv. Calculate the rs of steam at 120°C...
a) n-Butane (C4H10) is burned with stoichiometric air. Heat is removed and the products of combustion...
a) n-Butane (C4H10) is burned with stoichiometric air. Heat is removed and the products of combustion are collected at 1 atm pressure and 40°C. How much heat is removed per mole of fuel, and what fraction of the water in the products is liquid? b) a) n-Butane (C4H10) is burned with an excess of air. Heat is removed and the products of combustion are collected at 1 atm pressure and 40°C. How much air must be used in order to...
S. N- Bu tane Fuel is burned with 200 percent theoretical air during a combustion process...
S. N- Bu tane Fuel is burned with 200 percent theoretical air during a combustion process Determine the mass fraction of each product .Calculate air- fuel ratio on mole basis and volumetric analysis of the products
during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% excess air combustion process. Assuming complete combustion and a total pressure of 14.5 psia, determine the the air fuel ratio; a. b. the dew-point temperature of the products; c. apparent molecular mass of the products d. apparent gas constant of the products...
during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% excess air combustion process. Assuming complete...
air during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% exces combustion process. Assuming complete combustion and a total pressure of 14.5 psia, determine the a. the air fuel ratio; b. the dew-point temperature of the products; c. apparent molecular mass of the products; d. apparent gas constant of the products...
air during a 2. (25 pts) Diesel fuel dodecane (C12H26) is burned at constant pressure with 150% exces combustion process. Assuming complete...
Full Solutions please. Thank you!
Dodecane is burned with 50% excess air and with a molar-base combustion efficiency of 90%. The emissions leave the combustion chamber at a total pressure of 100 kPa. a) Calculate the mass-base and molar-base fuel-to-air ratio. (10 pts) b) Calculate the mass-base and molar-base equivalence ratio. (10 pts) c) You should get the same result for the mass-base and molar-base equivalence ratios in part (b). Prove mathematically that it was not a fluke. (10 pts)...
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...
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...
Answer all the questions please
Problem 1 (20 pts) (No Partial Credits) i. Butane, CaHio, is burned with air at an air fuel ratio of 20. Determine the percentage of excess ii. Benzene gas, CsHi, is burned with 90% theoretical air. Assuming no hydrocarbons in the products, calculate the air fuel ratio. ill. Determine the dew point temperature of the following reaction that take place where the atmospheric pressure is 100 kPa, iv. Calculate the rs of steam at 120°C...
S. N- Bu tane Fuel is burned with 200 percent theoretical air during a combustion process Determine the mass fraction of each product .Calculate air- fuel ratio on mole basis and volumetric analysis of the products
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