Question

In a typical nozzle, air is used as a medium to undergo increased velocity at the exit. Air at 627 C enters into a nozzle with negligible velocity and leaves at 27 C. Determine the velocity of air the exit, assuming no heat loss and nozzle being horizontal. Take the value of Cp = 1.005 kJ/kg K for air. Also, determine the area of the nozzle at the exit, if the density of the air is 1.12 kg/m^3 . (you must answer this question)

Answer #1

1. In a typical nozzle, air is used as a medium to undergo
increased velocity at the exit. Air at 627 0C enters into a nozzle
with negligible velocity and leaves at 27 0C. Determine the
velocity of air the exit, assuming no heat loss and nozzle being
horizontal. Take the value of Cp = 1.005 kJ/kg K for air. Also,
determine the area of the nozzle at the exit, if the density of the
air is 1.12 kg/m3.

Air at 790kPa, 573oC and 8m/s enters an adiabatic
nozzle at a rate of 1.95kg/s and leaves at 101oC and
177kPa pressure. If the nozzle is placed horizontal hence the inlet
and outlet are at the same height, determine the exit velocity of
the air (m/s). Assume the cp air = 1.005kJ/kg.K.

1. A converging-diverging
nozzle is designed assuming steady isentropic flow. Air enters the
nozzle at 427°C and 1000 kPa with negligible velocity. The exit
Mach number is 2 and throat area is 20 cm2.
Determine:
a. The throat velocity
b. The mass flow rate
c. The exit area
2. The nozzle now has an exit
area of 4 cm2. Air enters the nozzle with a total
pressure of 1200 kPa, and a total temperature of 127oC.
Determine the mass flow rate for back pressure of...

1. A converging-diverging
nozzle is designed assuming steady isentropic flow. Air enters the
nozzle at 427°C and 1000 kPa with negligible velocity. The exit
Mach number is 2 and throat area is 20 cm2.
Determine:
a. The throat velocity
b. The mass flow rate
c. The exit area
2. The nozzle now has an exit
area of 4 cm2. Air enters the nozzle with a total
pressure of 1200 kPa, and a total temperature of 127oC.
Determine the mass flow rate for back pressure of...

1. In a turbo jet engine, the momentum of the gases
leaving the nozzle produces the propulsive force. The enthalpy and
velocity of the gases at the nozzle entrance are 1200 kJ/kg and 200
m/s respectively. The enthalpy of the gas at exit is 900 kJ/kg. If
the heat loss from the nozzle is negligible, determine the velocity
of the gas jet at exit from the nozzle.
2. For question 1, if the diameter of the nozzle at
exit is...

1) A nozzle is a device for increasing the velocity of a
steadily flowing stream of fluid. At the inlet to a certain nozzle
the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s.
At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle
is horizontal and there is negligible heat loss from
it.
(i) Find the velocity at the nozzle exit.
(ii) If the inlet area is 0.1 m2 and specific volume...

Steam enters a converging-diverging nozzle at steady state with
P1 = 40bar T1 = 400°C and a velocity of
12m/s. The steam flows through the nozzle with negligible heat
transfer and no significant change in potential energy. At the exit
P2 = 15bar and the velocity is 700 m/s. The mass flow
rate is 2.5 kg/s. Determine the exit area of the nozzle in
m2

1 kg/s of carbon monoxide(k=1.4) enters a nozzle at 500K, low
velocity and leaves at 400K and 300kPa. Find the exit area of the
nozzle in sqcm.

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. The diverging section is now
acts as a supersonic nozzle. Assume that a normal shock stands in
the exit plane of the nozzle. Determine the following:
a. The static pressure and...

Air is heated by exhaust gases that flow in a heat exchanger, as
shown in the figure. The
heat gained by the air is measured as 320 kW and the inlet air
temperature is 20°C.
Exhaust gases inlet state is 527°C, 822 kJ/kg, 64 m/s while the
exit state is 327°C, 607
kJ/kg, 78 m/s. If the flow rate of air is 10kg/s, determine the
flow rate of exhaust gases
and the exit temperature of air. [Cp-air = 1.005 kJ/kg...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 7 minutes ago

asked 17 minutes ago

asked 33 minutes ago

asked 41 minutes ago

asked 51 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago