What is the function of turbo expander?

A turbo expander is a device used to expand high-pressure gas, converting its thermal energy into mechanical work, typically in the form of rotational energy. This process results in a drop in temperature and pressure of the gas, making it useful in applications like cryogenics and gas processing. By generating power, turbo expanders can also improve the overall efficiency of systems such as refrigeration cycles or natural gas processing plants.