Patent ID: 6829895
Filing Date: 2004-12-14
Classification: F01K,F03G,Y02E

Abstract:
A method for implementing a thermodynamic cycle comprising the steps of:expanding a filly vaporized, high pressure, working fluid stream, transforming a portion of its energy into usable form and producing a returning or spent, low pressure, stream, where the working fluid comprises at least one lower boiling component and at least one higher boiling component; evaporating an upcoming liquid working fluid stream using heat from a heating stream from an external heat source, a sufficient portion of the spent, low pressure, stream, and a first portion of a rich vapor sub-stream having an increased concentration of the lower boiling component, where the rich vapor sub-stream is derived from the sufficient portion of the spent, low pressure, stream after the sufficient portion of the spent, low pressure, stream has been partially condensed and separated in heating the upcoming liquid working fluid stream or portion thereof, where the heat is sufficient to form the fully, high pressure, vaporized working stream; expanding a second portion of the rich vapor sub-stream and a remainder portion of the spend, low pressure, stream, transforming a portion of its energy into usable form and producing a secondary returning or spent stream; completely condensing: the first portion of the rich vapor sub-stream; a lean liquid sub-stream derived from the sufficient portion of the spent, low pressure, stream after the sufficient portion of the spent, low pressure, stream has been partially condensed and separated in heating the upcoming liquid working stream or portion thereof; and the secondary spent stream to form the upcoming liquid working fluid stream; and pressurizing the upcoming liquid working fluid stream to a desired high pressure.