Chemical Engineering - Chemical Engineering Thermodynamics - Discussion

The throttling process (joule-expansion) is usually done using a pipe arranged with a gate valve and the effect is found at different positions of the valve this process is done under a steady state and keeping the system in an adiabatic chamber during which due to the obstruction imparted by valve position the gas will lose some pressure energy into frictional energy and hence the pressure decreases in a throttling experiment always.