How to calculate compressed air temperature and pressure

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SUMMARY

This discussion focuses on calculating the compressed air temperature and pressure at the combustion chamber inlet of a single-stage centrifugal compressor operating at 10,000 RPM. Key parameters include the initial temperature of 30°C (303 K) and atmospheric pressure (101,235 Pa). The Virginia Tech Compressible Aerodynamics Calculator is recommended as a useful tool for these calculations, emphasizing the importance of knowing the pressure ratio and compressor efficiency for accurate results.

PREREQUISITES
  • Understanding of thermodynamics principles related to gas compression
  • Familiarity with centrifugal compressor operation and efficiency metrics
  • Knowledge of pressure and temperature measurement units
  • Basic proficiency in using online calculators for aerodynamics
NEXT STEPS
  • Research the use of the Virginia Tech Compressible Aerodynamics Calculator for practical applications
  • Learn about calculating pressure ratios in centrifugal compressors
  • Study the impact of compressor efficiency on performance metrics
  • Explore thermodynamic equations relevant to gas compression and temperature changes
USEFUL FOR

Engineers, mechanical designers, and students involved in thermodynamics, aerodynamics, and compressor design will benefit from this discussion.

vincentryan
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How to calculate compressed air temperature and pressure at combustion chamber inlet?

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I want to calculate compressed air temperature and pressure at combustion chamber inlet in single stage centrifugal compressor,
RPM = 10 000
Temperature and Pressure of the Air before compressed =30 and normal atmosphere pressure at ground level
 
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A professor at Virginia Tech has written and posted several tools for aerodynamics applications:

http://engapplets.aoe.vt.edu/"

One of the tools is a Compressible Aerodynamics Calculator.

Perhaps there is something there that might help.
 
Last edited by a moderator:
You need to know the pressure ratio and the efficiency of the compressor.

Note the 10 kRPM is not very high so your efficiency might not be that good.
Second, Make sure to put units behind your values so we know what you are talking about.

P01 = 101235 Pa ?
T01 = 303 K ?
 

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