Thermodynamics Compressor problem

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SUMMARY

The discussion centers on calculating the minimum energy consumption of a compressor for chlorine (Cl2) recycling, operating under isentropic conditions with a recovery stream pressure twice that of the chlorinator. The exit temperature is specified as 100 degrees Celsius, with a specific heat capacity (Cp) of 36 J/mol·K. Participants emphasize the need for the entropy change equation for ideal gases to determine the entering temperature, clarifying that the 100°C refers to the exit temperature from the recovery system.

PREREQUISITES
  • Understanding of isentropic processes in thermodynamics
  • Familiarity with the ideal gas law and its applications
  • Knowledge of entropy change equations for ideal gases
  • Basic principles of energy consumption calculations in compressors
NEXT STEPS
  • Research the entropy change equation for ideal gases
  • Study isentropic process calculations in thermodynamic systems
  • Learn about energy efficiency metrics for compressors
  • Explore the properties and behavior of chlorine gas under varying conditions
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Students in thermodynamics, engineers working with gas compression systems, and professionals involved in chemical processing and energy efficiency optimization.

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Homework Statement



A chlorinator operates at twice the pressure of the Cl2 recovery stream. To recycle the Cl2, it has to be compressed. Whats the minimium energy consumption of the compressor (per mol of Cl2) if it leaves the recovery stream at 100 Degrees. Assume isentropic and Q = 0

Cp = 36J/Mol.K

Homework Equations



No idea

The Attempt at a Solution



I honestly have no idea where to start. A little kick start or tips would really help.
 
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Do you know the equation for the entropy change of an ideal gas? I'm not sure whether or not to treat the Cl2 as such, but if so then you could use that equation to solve for the entering temperature.
 
Maylis said:
Do you know the equation for the entropy change of an ideal gas? I'm not sure whether or not to treat the Cl2 as such, but if so then you could use that equation to solve for the entering temperature.

I think you meant the exit temperature. The entering temperature to the compressor, 100C, is the exit temperature from the recovery system.

Chet
 

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