Air enters a nozzle steadily at 280 kPa and 77°C with a velocity of 70 m/s...

Air enters a nozzle steadily at 280 kPa and 77°C with a velocity of 70 m/s and exits at 85 kPa and 320 m/s. The heat losses from the nozzle to the surrounding medium at 20°C are estimated to be 3.2 kJ/kg.

The table for the ideal-gas properties of air is given below.

Determine the exit temperature. (Round the final answer to one decimal).

The exit temperature is ______K

Determine the total entropy change for this process. (Round the final answer to four decimal places.) (You must provide an answer before moving on to the next part.)

The total entropy change for this process is ______kJ/kg·K.

Expert Solution

genius_generous answered 1 year ago

Air enters a nozzle steadily at P1=650kPa and T1=125°C at a velocity of 12m/s and leaves...

Air enters a nozzle steadily at P1=650kPa and T1=125°C at a velocity of 12m/s and leaves at 150m/s with a pressure of P2=110 kPa and temperature of T2=78°C. If the inlet are of the nozzle is 85cm^2, determine (a) Mass flow rate of air in the nozzle and (b) Exit diameter of nozzle.

1- Steam enters a nozzle at 500 °C and 1000 kPa with a velocity of 15...

1- Steam enters a nozzle at 500 °C and 1000 kPa with a velocity of 15 m/s. It leaves the nozzle at 200 °C and 300 kPa while losing heat at a rate of 30 kW. For an inlet area of 700 cm2, determine the velocity of the steam at the nozzle exit.?

Refrigerant 134a enters a well-insulated nozzle at 14 bar, 60°C, with a velocity of 37 m/s...

Refrigerant 134a enters a well-insulated nozzle at 14 bar, 60°C, with a velocity of 37 m/s and exits at 1.2 bar with a velocity of 460 m/s. For steady-state operation, and neglecting potential energy effects, determine the exit temperature, in °C.

Fluid (air) enters a nozzle at 150 m/s, 26.85 oC, and at a pressure of 200...

Fluid (air) enters a nozzle at 150 m/s, 26.85 oC, and at a pressure of 200 kPa. Assuming isentropic flow, evaluate the temperature and pressure of the fluid at a location where the speed of fluid equals the speed of sound. What is the ratio of the area at this location to the entrance area?

1. Air enters a converging-diverging nozzle with a total pressure of 1100 kPa and a total temperature...

1. Air enters a converging-diverging nozzle with a total pressure of 1100 kPa and a total temperature of 127°C. The exit area to throat area ratio is 1.8. The throat area is 5 cm2. The velocity at the throat is sonic and the diverging section acts as a nozzle. Determine the following: a. The mass flow rate b. The exit pressure and temperature c. The exit Mach number d. The exit velocity 2. The converging-diverging nozzle now has a throat area of 100 mm2 and an exit area of 160...

Air enters the diﬀuser of a ramjet engine at 22 kPa, 228 K and a velocity...

Air enters the diﬀuser of a ramjet engine at 22 kPa, 228 K and a velocity of 920 m/s, decelerating to a negligible velocity at the point at which heat is added. Using cold airstandard analysis with constant speciﬁc heats at 300K, determine the following if the exit pressure is 22 kPa and heat is added at 750 kJ per kg of air: (a) The pressure at the diﬀuser exit, in kPa. (b) The velocity at the nozzle exit, in...

A normal shock moves at a constant velocity of 500 m/s into still air (100 kPa,...

A normal shock moves at a constant velocity of 500 m/s into still air (100 kPa, 0◦C). Determine the static and stagnation conditions present in the air after the passage of the wave, as well as the gas velocity behind the wave. Hint: consider an observer moving with the wave.

1.Steam is accelerated by a nozzle steadily from a low velocity to a velocity of 210...

1.Steam is accelerated by a nozzle steadily from a low velocity to a velocity of 210 m/s at a rate of 3.2 kg/s. If the temperature and pressure of the steam at the nozzle exit are 400 °C and 2 MPa, the exit area of the nozzle is: Select one: a. 8.4 cm2 b. 10.2 cm2 c. 23.0 cm2 d. 152 cm2 e. 24.0 cm2 2.An adiabatic heat exchanger is used to heat cold water at 15 °C entering at a...

An air–fuel mixture enters a constant area combustion chamber at a velocity of 100 m/s a...

An air–fuel mixture enters a constant area combustion chamber at a velocity of 100 m/s a pressure of 70 kPa and a temperature of 150°C. Assuming that the fuel–air ratio is 0.04, the heating value of the fuel is 30 MJ/kg, and the mixture has the properties of air, calculate the Mach number in the gas flow after combustion is completed and the change of stagnation temperature and stagnation pressure across the combustion chamber. Neglect the effects of viscosity and...

Steam enters an adiabatic turbine steadily at 3 MPa and 400°C and leaves at 50 kPa....

Steam enters an adiabatic turbine steadily at 3 MPa and 400°C and leaves at 50 kPa. If the isentropic efficiency of the turbine is 66.7%, determine the actual temperature of steam at turbine exit. The mass flow rate of the steam flowing through the turbine is 218 kg/min, determine the power output from the turbine. Plot the T-s diagram.

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