Homework Answers
9. 78% of air is nitrogen
Total air mass per sec = 27.8 * 4.5 = 125.10
Total nitrogen per sec = 125.10 * 0.78 = 97.58 kg/s
Which is nearly equal to 95, so correct answer is second option
10. Annual cost of building = 6034 * (A/P, 12%,30) = 6034 * 0.124144 = 749.08 / yr per KW
Third option is correct answer
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Question 9 1 pts Methane (CH4) burns completely in excess air in the combustion chamber of...
methane gas (ch4) is used in a combustion chamber with theoretical air to produce heat. the...
methane gas (ch4) is used in a combustion chamber with theoretical
air to produce heat. the fuel is at 25 c, air is at 37 c, and the
products of combustion are at 1100 K.
Determine the amount of heat released during this combustion,
(kj/ kg fuel)
.
1 nov olugls Combustion chamber 3700
اورانهای Question 4 Question #4 10 pt Methane gas (CH4) is used in a combustion chamber...
اورانهای Question 4 Question #4 10 pt Methane gas (CH4) is used in a combustion chamber with theoretical air to produce heat. The fuel is at 25°C, air is at 37°C, and the products of combustion are at 1100 K. Determine the amount of heat released during this combustion, kJ kg fuel = ? CH4 25°C. 0.01 kg/s 1100K Combustion chamber H₂O CO2 N2 Air 37°C BI U A- A - Tx E 1 x x 5 - VX CT...
اورانهای Question 4 Question #4 10 pt Methane gas (CH4) is used in a combustion chamber...
اورانهای Question 4 Question #4 10 pt Methane gas (CH4) is used in a combustion chamber with theoretical air to produce heat. The fuel is at 25°C, air is at 37°C, and the products of combustion are at 1100 K. Determine the amount of heat released during this combustion, kJ kg fuel = ? CH4 25°C. 0.01 kg/s 1100K Combustion chamber H₂O CO2 N2 Air 37°C BI U A- A - Tx E 1 x x 5 - VX CT...
Methane (CH4) is burned with 110.9 % of theoretical air. The mixture enters the combustion chamber...
Methane (CH4) is burned with 110.9 % of theoretical air. The mixture enters the combustion chamber at 25°C. 1) Find the Air/Fuel ratio for this mixture: AF = (+ 0.03) 2) Find the adiabatic flame temperature for the mixture. Tadiabitic flame = OC (+ 20°C) 3) Find the mole fraction of the N2 in the exhaust. YN2 =
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...
1.f) Methane gas (CH4) enters a combustion chamber at a rate of 3 kg/sec at a...
1.f) Methane gas (CH4) enters a combustion chamber at a rate of 3 kg/sec at a temperature of 25 °C. A 200% theoretical air is supplied at a temperature of 400K. At the middle of methane combustion process (i.e., after 50% of methane gas is burnt), liquid propane (C3H8) at 25°C is injected at a rate that produces neither CO nor O2 in the flue gases. Assume steady state and adiabatic process at 1 atm, calculate the following i. The...
Q4 Methane gas (CH) burns with 40%excess air, and products leave at 700 K.Assuming the fuel...
Q4 Methane gas (CH) burns with 40%excess air, and products leave at 700 K.Assuming the fuel and air enter the combustion chamber at 250 C and atmospheric pressure, determine (a) Air fuel ratio (b) the dew point of the products and (c) the heat transfer from the combustion process for 1 kmole of CH4 Substance hr, 700 K kJ/kmol he, 298 K kJ/kmol kJ/kmol CH4 02 N2 CO2 H2O -74,850 8.682 8,669 -393,520 9,364 -241,820 9,904 21,184 20,604 27,125 24,088...
Question #4 Methane gas (CHA) is used in a combustion chamber with theoretical air to produce...
Question #4 Methane gas (CHA) is used in a combustion chamber with theoretical air to produce heat. The fuel is at 25°C, air is at 37°C, and the products of combustion are at 1100 K. Determine the amount of heat released during this combustion, (ing fuel). O = ? сн. 25°C. 0.01 kg/s 1100K Combustion chamber H20 CO2 N2 Air 37°C
Incorrect Question 19 0/8 pts Methane (CH4) at 298 K, 1 atm enters a furnace operating...
Incorrect Question 19 0/8 pts Methane (CH4) at 298 K, 1 atm enters a furnace operating at steady state and burns completely with 220% of theoretical air entering at 400 K, 1 atm. The products of combustion exit at 500 K, 1 atm. The flow rate of the methane is 1.2 kg/min. Kinetic and potential energy effects are negligible and air can be modeled as 21% O2 and 79% N2 on a molar basis. Determine the rate of heat transfer...
Gasoline enters a combustion chamber, at 1 atm, 298 K and a rate of 0.08 kg/min, where it burns s...
Gasoline enters a combustion chamber, at 1 atm, 298 K and a rate of 0.08 kg/min, where it burns steadily and completely, with 70% excess air that enters the chamber at 1 atm, 200 K. The exit temperature of the combustion products is 800 K. Use the IG mixture model for gases. Represent gasoline with liquid octane. a. Determine the mass flow rate, [kg of air/min], of air. b. Determine the rate of heat transfer, . c. What is the...
methane gas (ch4) is used in a combustion chamber with theoretical
air to produce heat. the fuel is at 25 c, air is at 37 c, and the
products of combustion are at 1100 K.
Determine the amount of heat released during this combustion,
(kj/ kg fuel)
.
1 nov olugls Combustion chamber 3700
اورانهای Question 4 Question #4 10 pt Methane gas (CH4) is used in a combustion chamber with theoretical air to produce heat. The fuel is at 25°C, air is at 37°C, and the products of combustion are at 1100 K. Determine the amount of heat released during this combustion, kJ kg fuel = ? CH4 25°C. 0.01 kg/s 1100K Combustion chamber H₂O CO2 N2 Air 37°C BI U A- A - Tx E 1 x x 5 - VX CT...
اورانهای Question 4 Question #4 10 pt Methane gas (CH4) is used in a combustion chamber with theoretical air to produce heat. The fuel is at 25°C, air is at 37°C, and the products of combustion are at 1100 K. Determine the amount of heat released during this combustion, kJ kg fuel = ? CH4 25°C. 0.01 kg/s 1100K Combustion chamber H₂O CO2 N2 Air 37°C BI U A- A - Tx E 1 x x 5 - VX CT...
Methane (CH4) is burned with 110.9 % of theoretical air. The mixture enters the combustion chamber at 25°C. 1) Find the Air/Fuel ratio for this mixture: AF = (+ 0.03) 2) Find the adiabatic flame temperature for the mixture. Tadiabitic flame = OC (+ 20°C) 3) Find the mole fraction of the N2 in the exhaust. YN2 =
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...
1.f) Methane gas (CH4) enters a combustion chamber at a rate of 3 kg/sec at a temperature of 25 °C. A 200% theoretical air is supplied at a temperature of 400K. At the middle of methane combustion process (i.e., after 50% of methane gas is burnt), liquid propane (C3H8) at 25°C is injected at a rate that produces neither CO nor O2 in the flue gases. Assume steady state and adiabatic process at 1 atm, calculate the following i. The...
Q4 Methane gas (CH) burns with 40%excess air, and products leave at 700 K.Assuming the fuel and air enter the combustion chamber at 250 C and atmospheric pressure, determine (a) Air fuel ratio (b) the dew point of the products and (c) the heat transfer from the combustion process for 1 kmole of CH4 Substance hr, 700 K kJ/kmol he, 298 K kJ/kmol kJ/kmol CH4 02 N2 CO2 H2O -74,850 8.682 8,669 -393,520 9,364 -241,820 9,904 21,184 20,604 27,125 24,088...
Question #4 Methane gas (CHA) is used in a combustion chamber with theoretical air to produce heat. The fuel is at 25°C, air is at 37°C, and the products of combustion are at 1100 K. Determine the amount of heat released during this combustion, (ing fuel). O = ? сн. 25°C. 0.01 kg/s 1100K Combustion chamber H20 CO2 N2 Air 37°C
Incorrect Question 19 0/8 pts Methane (CH4) at 298 K, 1 atm enters a furnace operating at steady state and burns completely with 220% of theoretical air entering at 400 K, 1 atm. The products of combustion exit at 500 K, 1 atm. The flow rate of the methane is 1.2 kg/min. Kinetic and potential energy effects are negligible and air can be modeled as 21% O2 and 79% N2 on a molar basis. Determine the rate of heat transfer...
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