Who has information on turbine expanders

Regarding applications in expanders, cryogenic air separation units are the most commonly used. He usually refers to it as a “turbine expansion machine” (where “turbine” is a loanword from Japanese). The principle involved is using pressurized gas to drive the impeller to rotate at high speed, thereby performing work externally through the rotor shaft; as a result, the temperature, pressure, and enthalpy of the gas decrease. It is the energy conversion process. Kinetic energy converts the gas into pressure energy; this energy then enters the expander, causing the impeller to rotate and thereby generating mechanical energy. The mechanical energy is transmitted outward through the main shaft, resulting in a decrease in the temperature of the gas stream output by the expander. It uses this low-temperature airflow to cool other materials. To control the speed of the expander and dissipate the mechanical energy generated, a brake fan, generator, or gas booster is typically installed at the other end of the expander rotor. As a mechanical device for recovering energy. Currently, boosters are more commonly used to increase the pressure of the recovered energy in gas before it enters the expander. This allows for higher efficiency. Regarding the process of the expander, small diagrams on this topic can be found on Baidu Images. It is mostly used in air separation equipment. (For reference)