We know that in throttling process enthalpy remains constant again an isenthalpic process also having constant enthalpy. So what is the difference? Please suggest. Can you give any practical example of an isenthalpic process other than throttling?
An throttling process can be consider isenthalpic if the kinetic energy change and the heat exchange is negligible compared to the enthalpy term.
In a nutshell, isenthalpic is a specific case of a throttling process but it is often observed so.
The isenthalpic process and the throttling process are the same only as initial and final state conditions.
In the isenthalpic process the gas temperature is constant, while in the throttling process it drops during the expansion until minimal cross section and then increases when the kinetic energy is converted in heat.
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