Is the Joule-Kelvin Expansion Reversible?

[bon]

Homework Statement

Is the Joule Kelvin expansion reversible or not?

Homework Equations

The Attempt at a Solution

It\'s definitely quasistatic but I\'m not sure if it is reversible or not? I have a feeling it\'s not but can;t explain why...any ideas?

 

[Andrew Mason]

Homework Statement

Is the Joule Kelvin expansion reversible or not?

...

It\'s definitely quasistatic but I\'m not sure if it is reversible or not? I have a feeling it\'s not but can;t explain why...any ideas?

The Joule Kelvin or Joule-Thompson cooling effect requires letting the gas expand freely using a throttle valve. (It only works with gases having attractive forces between molecules.). Throttling is not a reversible process since it requires more than an infinitessimal pressure difference between the two sides of the throttle valve.

AM