Special topic J-T valve
- An adiabatic process is one in which no heat is exchanged with surrounding.
- A special case is adiabatic flow through a valve.
- This is when the valve is insulated or flow is so rapid that any heat transfer is negligible.
- Take the valve as our system, then the system is system in a steady state since valve itself does not change.
The First law for the system is
Enthalpy is a function of T, P → Differential is