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Recent questions tagged nozzles
+2
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1
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Air flows into a diffuser at 300 m/*, 300 K and 100 kPa. At the exit the velocity is very small but the pressure is high.
asked
Mar 25, 2019
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+1
vote
1
answer
The exit velocity of a nozzle is 500 m/*. If ηnozzle = 0.88 what is the ideal exit velocity?
asked
Mar 22, 2019
in
Mathematics
by
kratos
nozzles
bernoulli
diffusers
thermodynamics
device efficiency
pipe
reversible shaft work
pumps
+1
vote
1
answer
Nitrogen gas flows into a convergent nozzle at 200 kPa, 400 K and very low velocity. It flows out of the nozzle at 100 kPa,
asked
Mar 12, 2019
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+1
vote
1
answer
Air at 20 m/*, 260 K, 75 kPa with 5 kg/* flows into a jet engine and it flows out at 500 m/*, 800 K, 75 kPa. What is the change
asked
Jan 30, 2019
in
Mathematics
by
kratos
heat exchangers
diffusers
nozzles
thermodynamics
availability
+2
votes
1
answer
A diffuser receives an ideal gas flow at 100 kPa, 300 K with a velocity of 250 m/* and the exit velocity is 25 m/*.
asked
Jan 19, 2019
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+2
votes
1
answer
A diffuser has air entering at 14.7 lbf/in.2, 540 R, with a velocity of 600 ft/*. The inlet cross-sectional area of the diffuser is 0.2 in.^2.
asked
Jan 7, 2019
in
Mathematics
by
kratos
nozzles
thermodynamics
single flow devices
diffusers
+2
votes
1
answer
In a jet engine a flow of air at 1000 K, 200 kPa and 40 m/* enters a nozzle where the air exits at 500 m/*, 90 kPa.
asked
Dec 15, 2018
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+2
votes
1
answer
A stream of ammonia enters a steady flow device at 100 kPa, 50°C, at the rate of 1 kg/*. Two streams exit the device at equal mass
asked
Dec 8, 2018
in
Mathematics
by
kratos
nozzles
compressors
fans
availability
diffusers
thermodynamics
bernoulli equation
reversible shaft work
+2
votes
1
answer
Calculate the air temperature and pressure at the stagnation point right in front of a meteorite entering the atmosphere (-50 °C, 50 kPa)
asked
Nov 27, 2018
in
Mathematics
by
kratos
nozzles
diffusers
thermodynamics
bernoulli equation
reversible processes
reversible shaft work
law efficiency
steady state
+2
votes
1
answer
A nozzle receives 0.1 kg/* steam at 1 MPa, 400°C with negligible kinetic energy. The exit is at 500 kPa, 350°C and the flow
asked
Nov 20, 2018
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+2
votes
1
answer
A sluice gate dams water up 5 m. There is a small **** at the bottom of the gate so liquid water at 20°C comes out of a 1 cm
asked
Oct 6, 2018
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+3
votes
1
answer
A jet engine receives a flow of 500 ft/* air at 10 lbf/in^2.
asked
Oct 3, 2018
in
Mathematics
by
kratos
nozzles
diffusers
carnot cycles
thermodynamics
single flow devices
momentum equation and forces
+3
votes
1
answer
In a jet engine a flow of air at 1000 K, 200 kPa and 30 m/* enters a nozzle, , where the air exits at 850 K, 90 kPa.
asked
Aug 30, 2018
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+3
votes
1
answer
How does a nozzle or sprayhead generate kinetic energy?
asked
Aug 13, 2018
in
Mathematics
by
kratos
nozzles
diffusers
thermodynamics
reversible processes
irreversibility
steady single flow devices
the first law of thermodynamics
steady state
+2
votes
1
answer
A modern jet engine has a temperature after combustion of about 1500 K at 3200 kPa as it enters the turbine setion,
asked
Jul 8, 2018
in
Mathematics
by
kratos
nozzles
heat exchangers
diffusers
thermodynamics
single flow devices
reversible processes
steady state
+1
vote
1
answer
Nitrogen gas flows into a convergent nozzle at 30 lbf/in.2, 600 R and very low velocity. It flows out of the nozzle at 15 lbf/in.^2, 500 R.
asked
Jun 13, 2018
in
Mathematics
by
kratos
nozzles
thermodynamics
single flow devices
diffusers
+2
votes
1
answer
Superheated vapor ammonia enters an insulated nozzle at 20°C, 800 kPa, with a low velocity and at the steady rate of 0.01 kg/*.
asked
Apr 28, 2018
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
+3
votes
1
answer
A diffuser, has air entering at 100 kPa, 300 K, with a velocity of 200 m/*. The inlet cross-sectional area of the diffuser is 100 mm^2.
asked
Mar 16, 2018
in
Mathematics
by
kratos
diffusers
thermodynamics
nozzles
+3
votes
1
answer
Steam leaves a nozzle with a velocity of 800 ft/*.
asked
Mar 13, 2018
in
Mathematics
by
kratos
nozzles
bernoulli
diffusers
thermodynamics
reversible shaft work
stagnation properties
+1
vote
1
answer
The front of a jet engine acts as a diffuser receiving air at 900 km/h, -5°C, 50 kPa, bringing it to 80 m/* relative to the engine
asked
Mar 12, 2018
in
Mathematics
by
kratos
nozzles
thermodynamics
diffusers
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