At the end of the compressor in a jet engine, a diffuser receives air through its 0.6m2 inlet at 175m/s and a temperature and pressure of -15°C and 85kPa, respectively. The outlet velocity of the diffuser is extremely low and can be assumed to be negligible compared to the inlet. (a) 3. Draw a sketch of the diffuser with a system boundary for a control volume and label the values of area, pressure, temperature and velocity at its inlet and outlet. Assume the air is an ideal gas and determine the mass flow rate through the diffuser. Assume the specific gas constant to be 287J/kg.K. Use the steady flow energy equation to find the change in enthalpy for the air through the diffuser. (b) (c) [Answers: 121kg/s, 15.3kJ/kg]
At the end of the compressor in a jet engine, a diffuser receives air through its 0.6m2 inlet at 175m/s and a temperature and pressure of -15°C and 85kPa, respectively. The outlet velocity of the diffuser is extremely low and can be assumed to be negligible compared to the inlet. (a) 3. Draw a sketch of the diffuser with a system boundary for a control volume and label the values of area, pressure, temperature and velocity at its inlet and outlet. Assume the air is an ideal gas and determine the mass flow rate through the diffuser. Assume the specific gas constant to be 287J/kg.K. Use the steady flow energy equation to find the change in enthalpy for the air through the diffuser. (b) (c) [Answers: 121kg/s, 15.3kJ/kg]
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![3.
At the end of the compressor in a jet engine, a diffuser receives air through its 0.6m2
inlet at 175m/s and a temperature and pressure of -15°C and 85kPa, respectively. The
outlet velocity of the diffuser is extremely low and can be assumed to be negligible
compared to the inlet.
(a)
Draw a sketch of the diffuser with a system boundary for a control volume and
label the values of area, pressure, temperature and velocity at its inlet and outlet.
Assume the air is an ideal gas and determine the mass flow rate through the
diffuser. Assume the specific gas constant to be 287J/kg.K.
Use the steady flow energy equation to find the change in enthalpy for the air
through the diffuser.
(b)
(c)
[Answers: 121kg/s, 15.3kJ/kg]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7c9c3259-16b0-44c2-9416-39962bcc9c3e%2F5df91a68-ecfe-4ab6-b801-199cee441881%2Focp1cg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3.
At the end of the compressor in a jet engine, a diffuser receives air through its 0.6m2
inlet at 175m/s and a temperature and pressure of -15°C and 85kPa, respectively. The
outlet velocity of the diffuser is extremely low and can be assumed to be negligible
compared to the inlet.
(a)
Draw a sketch of the diffuser with a system boundary for a control volume and
label the values of area, pressure, temperature and velocity at its inlet and outlet.
Assume the air is an ideal gas and determine the mass flow rate through the
diffuser. Assume the specific gas constant to be 287J/kg.K.
Use the steady flow energy equation to find the change in enthalpy for the air
through the diffuser.
(b)
(c)
[Answers: 121kg/s, 15.3kJ/kg]
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