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1. Ethyl alcohol at a temperature of 77'F and a...
Consider a rocket engine using ethyl alcohol (ethanol), C2H,OH as fuel and oxygen, O2, as oxidizer. Ethyl alcohol and oxygen enter the chamber as, respectively, a liquid at temperature T,C2H5OH = T,-...
Consider a rocket engine using ethyl alcohol (ethanol), C2H,OH as fuel and oxygen, O2, as oxidizer. Ethyl alcohol and oxygen enter the chamber as, respectively, a liquid at temperature T,C2H5OH = T,-29 8.1 5 K and a gas at temperature to2 =-40°C. The combustion reaction is o.0 where Alco , Aco2 , M2 , 20 arethe mole fractions of the products. The table below shows the mole fractions of the combustion products and their average specific heats and heats of...
Uliue bud with thecretical air at 25 °c and 1 atm 7 Liqudodane fuel at 77 the chamber at 1200 F. ...
Uliue bud with thecretical air at 25 °c and 1 atm 7 Liqudodane fuel at 77 the chamber at 1200 F. ls mixed in a combustion chamber with 400% theoretical air at 300-F Calculate the heat loss per mole of fuel The products
Uliue bud with thecretical air at 25 °c and 1 atm 7 Liqudodane fuel at 77 the chamber at 1200 F. ls mixed in a combustion chamber with 400% theoretical air at 300-F Calculate the heat loss...
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...
Butyl alcohol (C4H9OH) has been used as a substitute of gasoline. At room temperature, the densit...
Butyl alcohol (C4H9OH) has been used as a substitute of gasoline. At room temperature, the density of butyl alcohol can be taken as 0.81 g/cc. Balance the complete combustion of butyl alcohol in air and calculate the air-fuel ratio of butyl alcohol: (a) by mole (volume) and (b) by mass. (c) the mass and volume (in liters at standard temperature and pressure, 0 oC and 1 atm) of CO2 generated by 1 liter of butyl alcohol.
Consider the effects of exhaust gas recirculation on the combustion process. Mixing exhaust gas with the...
Consider the effects of exhaust gas recirculation on the combustion process. Mixing exhaust gas with the fuel-air gas changes the initial temperature, density, molecular weight and effective heat of combustion of the charge within an SI engine. Consider an SI engine with compression ratio 9 which uses fuel-air mixture of the equivalence ratio 1.1. The fuel-air mixture enters the intake manifold at a pressure p1 and temperature 290K. Perform an analysis of the effect of EGR on an ideal cycle....
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...
One mole of a gas at a temperature of 25 degree C and a pressure of...
One mole of a gas at a temperature of 25 degree C and a pressure of 1 bar (the initial state)is to be heated and compressed in a frictionless piston and cylinder to 300 degree C and 10 bar (the final state). a) Sketch the PV diagram and (b) compute the internal energy change, the entropy change and the heat and work required along each of the following paths: Path A: Isothermal compression to 10 bar, and then isobaric heating...
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...
For all of the processes, you may assume the gases have the properties of pure air...
For all of the processes, you may assume the gases have the properties of pure air and are thermally and calorically perfect. For all processes except the exhaust nozzle, you may neglect kinetic and potential energy changes. Therefore, the static and stagnation properties are equal. 50 kg/s of air enters an adiabatic compressor at 1 atm and 300 K and compresses the air to 30 atm. The compressor has an adiabatic efficiency of 90%. The compressor adiabatic efficiency is W...
A jet engine propels an aircraft at 254 m/s through air at 39 kPa and 273 K. The compressor pressure ratio is 9 and the temperature at the turbine inlet is 873 K. b) Taking the pressure in the combust...
A jet engine propels an aircraft at 254 m/s through air at 39 kPa and 273 K. The compressor pressure ratio is 9 and the temperature at the turbine inlet is 873 K. b) Taking the pressure in the combustion chamber as 843.5 kPa and the temperature at the turbine exit to be 518 K, determine the velocity of the exhaust gases. Give your answer in m/s to 2 decimal places. Assume ideal operation for all components and constant specific...
Consider a rocket engine using ethyl alcohol (ethanol), C2H,OH as fuel and oxygen, O2, as oxidizer. Ethyl alcohol and oxygen enter the chamber as, respectively, a liquid at temperature T,C2H5OH = T,-29 8.1 5 K and a gas at temperature to2 =-40°C. The combustion reaction is o.0 where Alco , Aco2 , M2 , 20 arethe mole fractions of the products. The table below shows the mole fractions of the combustion products and their average specific heats and heats of...
Uliue bud with thecretical air at 25 °c and 1 atm 7 Liqudodane fuel at 77 the chamber at 1200 F. ls mixed in a combustion chamber with 400% theoretical air at 300-F Calculate the heat loss per mole of fuel The products
Uliue bud with thecretical air at 25 °c and 1 atm 7 Liqudodane fuel at 77 the chamber at 1200 F. ls mixed in a combustion chamber with 400% theoretical air at 300-F Calculate the heat loss...
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...
One mole of a gas at a temperature of 25 degree C and a pressure of 1 bar (the initial state)is to be heated and compressed in a frictionless piston and cylinder to 300 degree C and 10 bar (the final state). a) Sketch the PV diagram and (b) compute the internal energy change, the entropy change and the heat and work required along each of the following paths: Path A: Isothermal compression to 10 bar, and then isobaric heating...
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...
For all of the processes, you may assume the gases have the properties of pure air and are thermally and calorically perfect. For all processes except the exhaust nozzle, you may neglect kinetic and potential energy changes. Therefore, the static and stagnation properties are equal. 50 kg/s of air enters an adiabatic compressor at 1 atm and 300 K and compresses the air to 30 atm. The compressor has an adiabatic efficiency of 90%. The compressor adiabatic efficiency is W...
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