Question
In: Mechanical Engineering
Ethane gas (C2H6) is burned with air. The fuel flow rate is 0.1 kg/s and the...
Ethane gas (C2H6) is burned with air. The fuel flow rate is 0.1 kg/s and the air flowrate is 2.2 kg/s. Ethane’s enthalpy of formation is -84,680 kJ/kmol. Determine:
The equivalence ratio
Ethane’s lower heating value by deriving it from enthalpy of formation data.
The heat release rate, in kW.
The mass fraction of oxygen in the products.
The mass of CO2 emitted per 1000 hours of operation.
The mass of fuel burned per 1000 hours of operation.
The adiabatic flame temperature, using 1400 and 2200 K as your guesses.
Solutions
samet mamat answered 2 years agoRelated Solutions
Ethane (C2H6) is burned with air in a steady-flow combustor. The mass flow rate of fuel...
Ethane (C2H6) is burned with air in a
steady-flow combustor. The mass flow rate of fuel entering the
combustor is 0.57 kg/s and the equivalence ratio is 0.64. The fuel
enters at 25oC and the air enters at 500 K.
Determine:
The heat release rate, in kW.
The mass flow rate of air, in kg/s.
The mole fraction of O2 in the products.
The mass fraction of CO2 in the products.
The total mass of CO2 produced per year (365...
A fuel gas containing methane and ethane is burned with air in a furnace, producing a...
A fuel gas containing methane and ethane is burned with air in a
furnace, producing a stack gas at 300.°C and 105 kPa (absolute).
You analyze the stack gas and find that it contains no unburned
hydrocarbons, oxygen, or carbon monoxide. You also determine the
dew-point temperature.
(a) Estimate the range of possible dew-point temperatures by
determining the dew points when the feed is either pure methane or
pure ethane.
(b) Estimate the fraction of the feed that is methane...
A fuel gas containing methane and ethane is burned with air in a furnace, producing a...
A fuel gas containing methane and ethane is burned with air in a
furnace, producing a stack gas at 300 ° C and 105 kPa (absolute).
You analyze the stack gas and find that it contains no unburned
hydrocarbons, oxygen, or carbon monoxide. You also determine the
dew-point temperature.
(a) Estimate the range of possible dew-point temperatures by
determining the dew points when the feed is either pure methane or
pure ethane.
(b) Estimate the fraction of the feed that...
The gas ethane, C2H6(g), can be used in welding. When ethane is burned in oxygen, the...
The gas ethane, C2H6(g), can be used in welding. When ethane is
burned in oxygen, the reaction is: 2 C2H6(g) + 7 O2(g)------>4
CO2(g) + 6 H2O(g)
(a) Using the following data, calculate ΔH° for this reaction.
ΔH°f kJ mol-1:
C2H6(g) =
-84.0 ; CO2(g) =
-393.5 ; H2O(g) =
-241.8
ΔH° = ___________
kJ
(b) Calculate the total heat capacity of
4
mol of CO2(g)
and
6
mol of H2O(g),
using CCO2(g)
=
37.1
J K-1
mol-1
and CH2O(g)...
100 moles of ethane (C2H6) are burned with 50% excess air. The percentage conversion of the...
100 moles of ethane (C2H6) are burned with
50% excess air. The percentage conversion of the ethane is 90%; of
the ethane burned, 25% reacts to form CO and the balance reacts to
form CO2. Calculate the molar composition of the stack
gas on a dry basis and the mole ratio of water to dry stack
gas.
1.) A fuel gas containing 95mol% methane and the balance ethane is burned completely in a...
1.) A fuel gas containing 95mol% methane and the balance ethane
is burned completely in a furnace with 25% excess air (79mol% N2,
21mol% O2). The stack gas leaves the furnace at 900°C and is cooled
to 450°C in a waste heat boiler. Assume a pressure of 1atm
throughout the process.
(a) Draw a fully labeled flow diagram, and calculate the amount
of heat (in kJ) that must be transferred from the gas in the waste
heat boiler to achieve...
A fuel gas containing 75.0 mole% methane and the balance ethane is burned completely with 15.0...
A fuel gas containing
75.0 mole% methane and the balance ethane is burned completely with
15.0 % excess air.
The stack gas leaves the furnace at 800.0 °C and is cooled to 450.0
°C in a waste-heat boiler, a heat exchanger in
which heat lost by cooling gases is used to produce steam from
liquid water for heating, power generation, or process
applications.
Taking as a basis of
calculation 100.0 mol of the fuel gas fed to the furnace, calculate...
A fuel gas containing 75.0 mole% methane and the balance ethane is burned completely with 15.0...
A fuel gas containing 75.0 mole% methane and the balance ethane
is burned completely with 15.0 % excess air.
The stack gas leaves the furnace at 800.0 °C and is cooled to 450.0
°C in a waste-heat boiler, a heat exchanger in
which heat lost by cooling gases is used to produce steam from
liquid water for heating, power generation, or process
applications.
Taking as a basis of calculation 100.0 mol of the fuel gas fed
to the furnace, calculate...
A fuel gas containing 85.0 mole% methane and the balance ethane is burned completely with 25.0...
A fuel gas containing 85.0 mole% methane and the balance ethane
is burned completely with 25.0 % excess air.
The stack gas leaves the furnace at 800.0 °C and is cooled to 350.0
°C in a waste-heat boiler, a heat exchanger in
which heat lost by cooling gases is used to produce steam from
liquid water for heating, power generation, or process
applications.
"A".Taking as a basis of calculation 100.0 mol of the fuel gas
fed to the furnace, calculate...
Air at 1 atm flowing at a rate of 0.1 kg / s has to be...
Air at 1 atm flowing at a rate of 0.1 kg / s has to be cooled
from 400 to 300K in a tube of 10 cm in diameter with a uniform wall
temperature of 250 K. Determine the length of the tube.
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