Patent ID: 6058695
Filing Date: 2000-05-09
Classification: F01K,Y02E

Abstract:
In a combined cycle power generating system having a plurality of turbines, including a first turbine and a gas turbine having a compressor, said turbines being drivingly coupled to one or more generators for producing electricity, and a distillation/condensation sub-system, a method of cooling ambient air entering the gas turbine, comprising the steps of:(a) expanding a working fluid comprised of a mixture of dissimilar components having different boiling points at the same pressure through said first turbine and generating a spent stream of said mixture of dissimilar components;(b) condensing said spent stream in said sub-system;(c) passing inlet air for the compressor of the gas turbine in heat exchange relation with said condensed spent stream in a first heat exchanger to cool the inlet air entering the gas turbine compressor;(d) flowing the cooled inlet air into the compressor of the gas turbine; andpassing the spent stream of step (a) through low and high-pressure condensors to provide first and second condensed spent streams, respectively, and passing the compressor inlet air in heat exchange relation in said first heat exchanger with the second condensed spent stream forming a first heated stream of dissimilar components.