Question

In: Mechanical Engineering

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 days), assuming that they system operates continuously 24 hours per day, in kg.

The adiabatic flame temperature, using 1400 and 2400 K as your guesses.

Solutions

Expert Solution

samet mamat answered 2 years ago
Next > < Previous

Related Solutions

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...
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.
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)...
Octane is burned completely with theoretical air in a steady-flow process at a constant pressure of...
Octane is burned completely with theoretical air in a steady-flow process at a constant pressure of 100 kPa. The products of combustion are cooled to 25 C. Calculate the number of kg of H2O which will condense per kg of fuel.
Methane gas (CH4) is burned in a combustor with a given percentage of excess air. The...
Methane gas (CH4) is burned in a combustor with a given percentage of excess air. The pressure and temperature of both the air and fuel are 101 kPa and 298 K respectively. Assume that the mole fractions are 79% nitrogen and 21 % oxygen for air (use M=28.97 kg/kmol and R=0.287 kJ/kg-K) and that water is a vapor in the exhaust. Given the values below, determine the following: --Given Values-- m_fuel (kg) = 100 Excess Air = 25% a) Determine...
Methane is completely burned with 250% excess air during a steady flow combustion process. If the...
Methane is completely burned with 250% excess air during a steady flow combustion process. If the reactants and the products are kept at 25 ° C and 1 atmosphere and the water of the products exists in liquid form. Determined: to. The balanced equation b. Heat transfer (kJ / kmol) c. Adiabatic flame temperature (K)
At steady state, air at 200 kPa, 330 K, and mass flow rate of 0.5 kg/s...
At steady state, air at 200 kPa, 330 K, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. The inlet cross-sectional area is 6 cm2. At the duct exit, the pressure of the air is 100 kPa and the velocity is 250 m/s. Neglecting potential energy effects and modeling air as an ideal gas with constant cp = 1.008 kJ/kg · K, determine: (a) the velocity of the air at the...
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...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT