A. Exchange of heat with colder stream
B. Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
C. Adiabatic expansion against a piston or in a turbine
D. Merely compressing the gas beyond its critical pressure
Correct Answer: Adiabatic expansion through a throttle valve (Joule-Thomson expansion) ✔
Last Updated: February 14, 2019