![2-2. (18 pts) A stoichiometric butane (C4Ho: h-126,150 [kJ/kmol]) (gas)-air mixture at 298K is combusted in an adiabatic SSSF reactor. Calculate the adiabatic flame temperature using constant specific heats taken at 300K. ANS:](http://img.homeworklib.com/questions/e9a67380-f9bf-11eb-9691-2543cd160249.png?x-oss-process=image/resize,w_560)
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2-2. (18 pts) A stoichiometric butane (C4Ho: h-126,150 [kJ/kmol]) (gas)-air mixture at 298K is combusted in...
A boiler burns a biofuel, which is a mixture of 91 % Cellulose (C6H1005) and 106...
A boiler burns a biofuel, which is a mixture of 91 % Cellulose (C6H1005) and 106 I6 Paracoumaryl alcohol (C9H1002) in mass. (a) Write down the stoichiometric combustion equation of this biofuel. [8 marks] (b) The biofuel and excessive air are supplied to the combustion chamber at 298 K. The measured adiabatic flame temperature of the combustion of the biofuel with excess air is 2225 K. Determine the percentage excess air of this combustion using the constant averaged specific heats:...
2. Natural gas containing a mixture of methane, ethane, propane, and butane is burned in a...
2. Natural gas containing a mixture of methane, ethane, propane, and butane is burned in a furnace with excess air. One hundred kmol/h of a gas containing 94.4 mole% methane, 3.40% ethane, 0.60% propane, and 0.50% butane is to be burned with 17% excess air. a) Calculate the molar flow rate of the air. b) Now instead of using numerical values, we will work the problem by deriving an equation. Define the following variables: i.molar flow of the fuel gas:...
QUESTION 1: 20 marks 20 points It is planned to carry out the following second-order, elementary,...
QUESTION 1: 20 marks 20 points It is planned to carry out the following second-order, elementary, non- catalytic gas-phase reaction in an adiabatic CSTR: A+B_C+3D. Only A and B (no inerts) are fed to the reactor at equimolar flow rates of 150 mol/min each. The rate constant is related to the temperature by Arrhenius law as follows: k = 37.68x10^10 exp(-80000/RT) L/mol.min. The heats of formation of A, B, C and D (at 298 K) in kJ/mol are -235.3, -393.5,...
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...
any help thank you Chapter 12 Ideal Gas Mixtures and Psychrometric Applications Converting Between Mass Fraction...
any help thank you
Chapter 12 Ideal Gas Mixtures and Psychrometric Applications Converting Between Mass Fraction and Mole Fraction Mass Fraction Mole Fraction m/M y, M M mf M cy, MM m/M Example 1: Determine the mf CO2 0.04 MW mix mixture molecular weight mf_N2 0.7 m mix (kg) (kg/kmol), specific volume mf_02 0.2 0.06 (m®/kg), and mole fraction for mf_H20 T(C) 40 a gas mixture given the mass P (bar) 1 fraction, temperature, pressure and volume. V(m3) Example 2:...
Problem #3 (50 pts) Liquid ethanol burns steadily with air supplied at 33 phase) exit at...
Problem #3 (50 pts) Liquid ethanol burns steadily with air supplied at 33 phase) exit at 1000 K. 1 atm. A dry molar analysis CO, 16.6%; N, 80.24%. Atomic weights Ignore kinetic and potential energy effects. (1) (12 pts) Write down the chemical reac uid ethanol (CH.OH) at 298K. 1 atm enters a combustion chamber and Pplied at 350K. 1 atm. The combustion products (with water in the gas molar analysis of the combustion products gives CO., 3.16%; omic weights...
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by...
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by volume. It is to be fed to the combustion chamber in 10% excess air at 25ºC, where it is completely burnt to carbon dioxide and water. The flue gases produced are to be used to generate 5 bar steam from water at 90ºC. net calorific value (MJm-3) at 25oC Butane (C4H10) = 111.7MJm-3, Butene (C4H8) = 105.2 MJm-3. Propane (C3H8) = 85.8 MJm-3. air...
The following gas phase reaction takes place in the presence of steam as inert (1) in...
The following gas phase reaction takes place in the presence of steam as inert (1) in a packed bed reactor operating adiabatically. A B+C -ra = k PA k [Pn-F Popc] kmol \kgcath) PA, PB, Pc : Partial pressure of the species in atm Equilibrium constant K can be taken as constant at a value of 0.4 atm at the studied temperature and forward reaction rate constant k, log k = 4- 5000 T(K) k: kmol atm.kgcath Using the data...
Consider a piston cylinder process in air (as an ideal gas with constant specific heats) which...
Consider a piston cylinder process in air (as an ideal gas with constant specific heats) which goes from state 1 at 1 atm, 300 K to state 2 at: 3 atm and 400K. (use k=1.4, Cp = 1.005 kJ/(kg K), Cv=0.718 kJ/(kg K), R= 0.287 kJ/(kg K)) (these are the same conditions as question 4). What must the heat transfer be (in kJ/kg), if the process takes place without entropy generation and it can be assumed the temperature at system...
ASAP PROBLEM 2 (29pt): Air, which behaves as an ideal gas with constant specific heats (taken...
ASAP
PROBLEM 2 (29pt): Air, which behaves as an ideal gas with constant specific heats (taken as Cz»-1.005品.cv-0.718 ) undergoes a constant pressure process from 27°C and 2m to 227°C at 1MPa. kgk (a) What is the mass of the air? (b) What is the heat transfer of the air in [kJ]? Find (a)m Given (fill in missing information) State 1: State 2: Air Assumptions (fill in missing information) Air behaves as an ideal gas Cp1.005.Cy0.718 kJ kgK kJ Solution
A boiler burns a biofuel, which is a mixture of 91 % Cellulose (C6H1005) and 106 I6 Paracoumaryl alcohol (C9H1002) in mass. (a) Write down the stoichiometric combustion equation of this biofuel. [8 marks] (b) The biofuel and excessive air are supplied to the combustion chamber at 298 K. The measured adiabatic flame temperature of the combustion of the biofuel with excess air is 2225 K. Determine the percentage excess air of this combustion using the constant averaged specific heats:...
QUESTION 1: 20 marks 20 points It is planned to carry out the following second-order, elementary, non- catalytic gas-phase reaction in an adiabatic CSTR: A+B_C+3D. Only A and B (no inerts) are fed to the reactor at equimolar flow rates of 150 mol/min each. The rate constant is related to the temperature by Arrhenius law as follows: k = 37.68x10^10 exp(-80000/RT) L/mol.min. The heats of formation of A, B, C and D (at 298 K) in kJ/mol are -235.3, -393.5,...
any help thank you
Chapter 12 Ideal Gas Mixtures and Psychrometric Applications Converting Between Mass Fraction and Mole Fraction Mass Fraction Mole Fraction m/M y, M M mf M cy, MM m/M Example 1: Determine the mf CO2 0.04 MW mix mixture molecular weight mf_N2 0.7 m mix (kg) (kg/kmol), specific volume mf_02 0.2 0.06 (m®/kg), and mole fraction for mf_H20 T(C) 40 a gas mixture given the mass P (bar) 1 fraction, temperature, pressure and volume. V(m3) Example 2:...
Problem #3 (50 pts) Liquid ethanol burns steadily with air supplied at 33 phase) exit at 1000 K. 1 atm. A dry molar analysis CO, 16.6%; N, 80.24%. Atomic weights Ignore kinetic and potential energy effects. (1) (12 pts) Write down the chemical reac uid ethanol (CH.OH) at 298K. 1 atm enters a combustion chamber and Pplied at 350K. 1 atm. The combustion products (with water in the gas molar analysis of the combustion products gives CO., 3.16%; omic weights...
The following gas phase reaction takes place in the presence of steam as inert (1) in a packed bed reactor operating adiabatically. A B+C -ra = k PA k [Pn-F Popc] kmol \kgcath) PA, PB, Pc : Partial pressure of the species in atm Equilibrium constant K can be taken as constant at a value of 0.4 atm at the studied temperature and forward reaction rate constant k, log k = 4- 5000 T(K) k: kmol atm.kgcath Using the data...
Consider a piston cylinder process in air (as an ideal gas with constant specific heats) which goes from state 1 at 1 atm, 300 K to state 2 at: 3 atm and 400K. (use k=1.4, Cp = 1.005 kJ/(kg K), Cv=0.718 kJ/(kg K), R= 0.287 kJ/(kg K)) (these are the same conditions as question 4). What must the heat transfer be (in kJ/kg), if the process takes place without entropy generation and it can be assumed the temperature at system...
ASAP
PROBLEM 2 (29pt): Air, which behaves as an ideal gas with constant specific heats (taken as Cz»-1.005品.cv-0.718 ) undergoes a constant pressure process from 27°C and 2m to 227°C at 1MPa. kgk (a) What is the mass of the air? (b) What is the heat transfer of the air in [kJ]? Find (a)m Given (fill in missing information) State 1: State 2: Air Assumptions (fill in missing information) Air behaves as an ideal gas Cp1.005.Cy0.718 kJ kgK kJ Solution
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