Process such as isobaric, isochoric, quasistatic, adiabatic

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SUMMARY

The discussion focuses on thermodynamic processes involving ideal gases, specifically isobaric, isochoric, quasistatic, and adiabatic processes. It establishes that total entropy is conserved in reversible processes, while system entropy remains constant in reversible processes without heat flow. The enthalpy change for an ideal gas is defined as ΔH = nCpΔT, applicable even when pressure is not constant, but with specific considerations for ideal gas behavior. The concept of reversible processes is clarified as an idealization where no gradients in temperature or pressure exist.

PREREQUISITES
  • Understanding of ideal gas laws
  • Familiarity with thermodynamic processes (isobaric, isochoric, adiabatic)
  • Knowledge of entropy and enthalpy concepts
  • Basic principles of reversible processes in thermodynamics
NEXT STEPS
  • Study the derivation and applications of the ideal gas law
  • Learn about the first and second laws of thermodynamics
  • Explore the concept of reversible and irreversible processes in detail
  • Investigate the implications of heat transfer in adiabatic processes
USEFUL FOR

Students and professionals in thermodynamics, mechanical engineers, and anyone studying the behavior of ideal gases in various thermodynamic processes.

cos(e)
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Just say an ideal gas goes through process such as isobaric, isochoric, quasistatic, adiabatic etc, is there any special cases where entropy is conserved, or am i thinking enthalpy. Also how is enthalpy found in adiabatic processes?
 
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Total entropy is conserved in reversible processes. System entropy is conserved in reversible processes without heat flow (reversible work doesn't carry entropy).

For an ideal gas, enthalpy H is nc_PT+H_0, so for any process \Delta H=nc_P\Delta T.
 


do we use delta H= n*Cp* delta T even when the pressure is not constant?

What do u mean by reversible process, i havnt learned that yet :S
 


cos(e) said:
do we use delta H= n*Cp* delta T even when the pressure is not constant?

For an ideal gas; it's a special case.

cos(e) said:
What do u mean by reversible process, i havnt learned that yet :S

A reversible process is an idealization in which no gradients exist in temperature, pressure, or any intensive properties. It's not realizable in real life, where the only way to transfer energy is by differences in temperature, pressure, etc. But if we assume the differences are small enough to be negligible, it makes the calculations easier precisely because we can assume that entropy generation is zero. More http://en.wikipedia.org/wiki/Reversible_process_(thermodynamics)" .
 
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