Patent ID: 7797940
Filing Date: 2010-09-21
Classification: F01K

Abstract:
1. A power plant system for producing power using a source of steam, comprising: a) a vaporizer into which steam from a source of steam is supplied, for vaporizing organic working fluid flowing through said vaporizer; b) at least one organic vapor turbine to which said vaporized working fluid is supplied and which is suitable for generating electricity and producing expanded organic vapor; c) a recuperator for heating organic vapor condensate flowing towards said vaporizer using said expanded organic vapor exhausted from said organic vapor turbine; and d) two or more stages of preheaters for additionally heating organic working fluid exiting said recuperator and flowing towards said vaporizer, wherein a portion of the organic working fluid exiting said recuperator bypasses one of said stages of preheaters and is supplied, together with working fluid exiting said one of said stages, to a further stage of preheaters.