Air enters a combustion chamber at a mach number of 3.5 with a pressure and temperature...
Air enters a combustion chamber at a mach number of 3.5 with a
pressure and temperature of 120 kpa and 400 C.
the mach number at the exit is 1.2.
find the amount of heat per unit mass added to the flow.
What are the pressure and temperature at the exit of the combustor?
Homework Answers
Add Answer to:
Air enters a combustion chamber at a mach number of 3.5 with a
pressure and temperature...
Flow enters the combustor of a jet engine at a Mach number of 0.5, a temperature...
Flow enters the combustor of a jet engine at a Mach number of 0.5, a temperature of 390K and a pressure of 200kPa. (a) Determine the maximum amount of heat that can be added to this flow, assuming that the combustion chamber has the form of a constant area duct, and the properties of the air/fuel mixture flowing through the combustor are the same as those of air. (b) The flow entering the combustor 1 has a fuel to air...
2.-Consider a cylindrical combustion chamber where air enters at 480 kPa with a density of 3.05...
2.-Consider a cylindrical combustion chamber where air enters at 480 kPa with a density of 3.05 kg/m. At inlet the stagnation air temperature is 553K. Heat is added by combustion and the air exits the chamber at a Mach number of 0.4. Determine the stagnation temperature at the exit and the specific heat added to the chamber due to combustion if the chamber is assumed frictionless. Specific heat at constant pressure of air is 1.005 kJ/kg.K and the gas constant...
3. Air enters a constant area duct at a Mach number of 0.14, a pressure of 195 kPa, and a temperature of 25 °C. Heat is added to the air that flows through the duct at a rate of 65 kJ/kg of air. A...
3. Air enters a constant area duct at a Mach number of 0.14, a pressure of 195 kPa, and a temperature of 25 °C. Heat is added to the air that flows through the duct at a rate of 65 kJ/kg of air. Assuming that the flow is steady and that the effects of wall friction can be ignored, find the temperature, pressure, and Mach number at which the air leaves the duct. Assume that the air behaves as a...
Air flows through a constant area duct. The pressure and temperature of the air at the...
Air flows through a constant area duct. The pressure and temperature of the air at the inlet to the duct are P1 = 100 kPa absolute, and T1 = 298 K, respectively. Inlet Mach number is M1 = 0.1. Heat is transferred to the air as it flows through the duct and as a result the Mach number at the exit increases. a) Find the pressure and temperature at the exit, while the exit Mach number changes between M=0.2 to...
In a combustion turbine using natural gas as the fuel, air enters the compressor at 98...
In a combustion turbine using natural gas as the fuel, air enters the compressor at 98 kPa and 300 "K. The pressure ratio in the compressor is 8 and the isentropic efficiency of the compressor is 85%. The outlet temperature of the combustion chamber is 1200 K. The pressure drops by 4 percent in the combustion chamber. The exit pressure of the turbine is 102 kPa and the isentropic efficiency of the turbine is 90%. Find: a) The exit temperature...
Question 1.4 A convergent-divergent nozzle is designed to operate with isentropic flow with an exit Mach number, Me. The flowin the nozzle is supplied from a reservoir of air with a static pressure o...
Question 1.4 A convergent-divergent nozzle is designed to operate with isentropic flow with an exit Mach number, Me. The flowin the nozzle is supplied from a reservoir of air with a static pressure ofPr and a static temperature of Tr and the nozzle has a throat area, AT, as specified in the table below Value Unit Design Data Exit Mach number (ME) 0.55 Area of throat (AT) 600 kPa Reservoir static pressure (PR) 380 WAT Reservoir static temperature (TR) kPa...
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...
4. Propylene (C,H) enters a combustion chamber at 25 C, 1 bar, with a volumetric flow...
4. Propylene (C,H) enters a combustion chamber at 25 C, 1 bar, with a volumetric flow rate of 10m3/min. 150% oftheoretical air enters the chamber at 47°C, 1 bar. Combustion products exit the chamber at 327C, 1 bar. For this system find: a. the air-fuel ratio on a mass basis b. the rate of heat transfer from the chamber, kJ/min c. the dew point of the combustion products,C
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa,...
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa, the temperature is 30°C, and the velocity is effectively zero through a nozzle, as shown in Fig. 2. Assuming one dimensional isentropic flow, find: (a) if the pressure at some section of the nozzle is 80 kPa, the Mach number, temperature, and velocity at this section. (b) if the nozzle has a circular cross-section with a diameter of 12 mm at the section discussed...
Air at stagnation pressure of 700 kPa and temperature of 530 K enters a isentropic converging-diverging...
Air at stagnation pressure of 700 kPa and temperature of 530 K enters a isentropic converging-diverging nozzle. The throat area of the nozzle is 5 cm2, the exit area is 12.5 cm2. The back pressure is 350 kPa and a normal shock occurs within a diverging section. Determine (a) exit Mach number, (b) change in stagnation pressure, (c) upstream and downstream Mach number of shock (d) cross sectional area where shock occurs (e) back pressure if the flow were isentropic...
2.-Consider a cylindrical combustion chamber where air enters at 480 kPa with a density of 3.05 kg/m. At inlet the stagnation air temperature is 553K. Heat is added by combustion and the air exits the chamber at a Mach number of 0.4. Determine the stagnation temperature at the exit and the specific heat added to the chamber due to combustion if the chamber is assumed frictionless. Specific heat at constant pressure of air is 1.005 kJ/kg.K and the gas constant...
3. Air enters a constant area duct at a Mach number of 0.14, a pressure of 195 kPa, and a temperature of 25 °C. Heat is added to the air that flows through the duct at a rate of 65 kJ/kg of air. Assuming that the flow is steady and that the effects of wall friction can be ignored, find the temperature, pressure, and Mach number at which the air leaves the duct. Assume that the air behaves as a...
In a combustion turbine using natural gas as the fuel, air enters the compressor at 98 kPa and 300 "K. The pressure ratio in the compressor is 8 and the isentropic efficiency of the compressor is 85%. The outlet temperature of the combustion chamber is 1200 K. The pressure drops by 4 percent in the combustion chamber. The exit pressure of the turbine is 102 kPa and the isentropic efficiency of the turbine is 90%. Find: a) The exit temperature...
Question 1.4 A convergent-divergent nozzle is designed to operate with isentropic flow with an exit Mach number, Me. The flowin the nozzle is supplied from a reservoir of air with a static pressure ofPr and a static temperature of Tr and the nozzle has a throat area, AT, as specified in the table below Value Unit Design Data Exit Mach number (ME) 0.55 Area of throat (AT) 600 kPa Reservoir static pressure (PR) 380 WAT Reservoir static temperature (TR) kPa...
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...
4. Propylene (C,H) enters a combustion chamber at 25 C, 1 bar, with a volumetric flow rate of 10m3/min. 150% oftheoretical air enters the chamber at 47°C, 1 bar. Combustion products exit the chamber at 327C, 1 bar. For this system find: a. the air-fuel ratio on a mass basis b. the rate of heat transfer from the chamber, kJ/min c. the dew point of the combustion products,C
2. Air is steadily discharged from a large chamber in which the pressure is 500 kPa, the temperature is 30°C, and the velocity is effectively zero through a nozzle, as shown in Fig. 2. Assuming one dimensional isentropic flow, find: (a) if the pressure at some section of the nozzle is 80 kPa, the Mach number, temperature, and velocity at this section. (b) if the nozzle has a circular cross-section with a diameter of 12 mm at the section discussed...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago