HEAT RECOVERY SYSTEM INCLUDING A DUAL PRESSURE TURBINE

摘要

A first stage (120) of a dual pressure turbine (100) receives superheated gas and directs the gas at a supersonic velocity against the blades (126) of the rotor (124). The gas exiting the first stage (120) and superheated gas at a lower preselected temperature are controllably and substantially separately directed to a second stage (15) at substantially the same velocity. The dual pressure turbine (100) effectively utilizes the superheated gases to produce useful work at a high system efficiency.