Patent ID: 8769952

Claim:
An organic rankine cycle (ORC) system for generating power, the ORC system comprising: a condenser configured to condense a vaporized refrigerant; a pump configured to increase a pressure of the condensed refrigerant; an evaporator configured to receive the condensed refrigerant and vaporize the refrigerant; a turbine configured to receive the vaporized refrigerant and generate power; an oil sump for storing oil used to operate the turbine; a heat exchanger located downstream of the evaporator and configured to receive a mixture of oil and refrigerant from the evaporator, and vaporize liquid refrigerant in the mixture such that the oil is separable from the refrigerant and recoverable by the oil sump; a separator configured to separate the oil and the vaporized refrigerant from the mixture, wherein the separator is a discharge housing of the turbine; and an eductor system for delivering oil from the separator to the oil sump.