The combustion of fuel in your car engine requires oxygen gas, which is supplied as air...
The combustion of fuel in your car engine requires oxygen gas, which is supplied as air (21% oxygen molecules) into the engine. Consider a car that is using 100% ethanol, C2H5OH, as fuel. If your engine intakes 4.11 L of air per minute at 1.00 atm and 25ºC, what is the maximum volume of ethanol (0.789 g/mL) that can be burned per minute? Hint: You can ignore the "per minute" information because both the ethanol and air are being quantified per minute. Enter your answer to three significant figures in units of mL.
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The combustion of fuel in your car engine requires oxygen gas,
which is supplied as air...
The combustion of fuel in your car engine requires oxygen gas, which is supplied as air...
The combustion of fuel in your car engine requires oxygen gas, which is supplied as air (21% oxygen molecules) into the engine. Consider a car that is using 100% ethanol, C2H5OH, as fuel. If your engine intakes 3.7L of air per minute at 1.00 atm and 25°C, what is the maximum volume of ethanol (0.789g/mL) that can be burned in one minute?
Gas fired furnace (a) Oxygen-gas combustion is being pursued for use as a supplement and/or replacement...
Gas fired furnace (a) Oxygen-gas combustion is being pursued for use as a supplement and/or replacement for conventional air-gas chemistry in a variety of applications. The first order design assessment in such instances is illustrated in part by the following thermochemical analysis of an acetylene cutting torch burning oxygen or air. Using ideal complete combustion of acetylene at equivalence ratio values of 1.00, 0.83, 0.71, determine (i) the mass of oxidant consumed per mass of fuel burned for oxygen and...
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...
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)...
Consider an internal combustion engine like that used in automobiles. The most common fuel used here...
Consider an internal combustion engine like that used in automobiles. The most common fuel used here is gasoline which is a mixture of hydrocarbons, and an octane rating is given for standardization. Therefore, we will approximate gasoline as being composed of the hydrocarbon, octane, C8H18. Another fuel that is common in racing applications is nitromethane, CH3NO2, used in top fuel dragsters. Let’s consider the combustion of each fuel with oxygen in an internal combustion engine. Let the 8-cylinder engine displacement...
Fuel cells can be powered by the reaction between formic acid and oxygen as following As...
Fuel cells can be powered by the reaction between formic acid and oxygen as following As formic acid and oxygen react together inside the fuel cell, it produced both electrical power and heat. While there is no shaft work produced by the fuel cells, this electrical power produced by the fuel cells can be considered as the shaft work term when you perform the energy balance. A fuel cell is being supplied with 100. liters per minute of pure formic...
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 Otto engine is operating with natural gas which can be approximated as an ideal gas....
An Otto engine is operating with natural gas which can be approximated as an ideal gas. Assuming the engine is at standard condition (25°C, 1 atm) before the compression process. Also, temperature of the Otto cycle after the combustion process is 1500 K. (a) Assuming compression ratio of the Otto engine as 8, 9 and 10, determine the corresponding temperatures of the natural gas-air mixture (natural gas with 100% excess air) after the compression. (b) Determine the thermal energy release...
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...
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...
Gas fired furnace (a) Oxygen-gas combustion is being pursued for use as a supplement and/or replacement for conventional air-gas chemistry in a variety of applications. The first order design assessment in such instances is illustrated in part by the following thermochemical analysis of an acetylene cutting torch burning oxygen or air. Using ideal complete combustion of acetylene at equivalence ratio values of 1.00, 0.83, 0.71, determine (i) the mass of oxidant consumed per mass of fuel burned for oxygen and...
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...
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...
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...
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