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(12)United States Patent Kaplan eta]. (54) MULTI-LEVEL ORGANIC RANKINE CYCLE POWER SYSTEM (75) Inventors: UriKaplan,DoarNaEmekSoreq(IL); Joseph Sinai, Or-Yehuda (IL); Lucien Y. Bronicki,Yavne(IL) (73) Assignee: OrmatTechnologies,Inc.,Reno,NV (Us) (10) Patent N0.: US 8,438,849 B2 (*) Notice: Subjecttoanydisclaimer,thetermofthis patent is extended or adjusted under 35 U.S.C. 154(b) by 850 days. 6,173,563 B1 1/2001 Vakiletal. 6,571,548 B1 * 6/2003 Bronicki et al. ............... 60/772 6,857,268 B2 2/2005 Stingereta1. 7,469,542B2 12/2008Kalina 2006/0260314 A1 11/2006 Kincaidetal. 2009/0019853 A1 1/2009 Nilsoon OTHER PUBLICATIONS International Search Authority, International Search Report, Publi cationNo.WO 2010/143046(PublishedDec.16,2010);Search completed Dec. 26, 2010. * cited by examiner PrimaryExaminer* HoangNguyen (74)Attorney,Agent,orFirm*Nath,Goldberg& Meyer; JeraldL.Meyer (57) ABSTRACT AWasteheatrecoverysystemincludesahighpressureturbine andaloWpressureturbine,inWhichthehighpressureturbine receives high pressure Working ?uid vapor, the loW pressure turbine receives loW pressure Working ?uid vapor and the highpressureturbinealsosuppliesloWpressureWorking?uid vapor to the loW pressure turbine. A recuperator receives Working ?uid vapor from the loW pressure turbine. The recu perator produces heated condensate, at least a portion of Which is provided to a high pressure vaporizer. The high pressure vaporizer is con?gured to receive from a high tem perature heat source and produces high pressure Working vaporusedtopoWerthehighpressureturbine.Theremaining condensed?uidisprovidedtoaloWpressurevaporizerWhich is con?gured to receive heat from a low-temperature heat source, thereby producing loW pressure Working ?uid vapor used to poWer the loW pressure turbine. 31 Claims, 5 Drawing Sheets (21) App1.No.:12/457,477 (22) Filed: Jun.11,2009 (65) PriorPublicationData US 2010/0071368A1 Mar.25,2010 Related US. Application Data (63) Continuation-in-partofapplicationNo.11/736,331, ?ledonApr. 17,2007,noW Pat.No. 8,061,139. (51) Int.Cl. F01K 7/34 F01K23/04 (52) US.Cl. (2006.01) (2006.01) USPC ..60/653;60/651;60/655;60/671; 60/679;60/676 (58) FieldofClassi?cationSearch ..60/653, 60/676,6774679,655,651,671 Seeapplication?leforcompletesearchhistory. (56) References Cited U.S.PATENT DOCUMENTS 42,036894,657847 A * 91/194758 WBardreennhau.s.e.n.. 46,302089,761715 A * 51/12908020 KPorceringjeareetaal1. .. 60/641.2 1m VAPORIZER/ SUPERHEATER PREHEATER COOLINGWA!ER 125 (45) Date ofPatent: May 14,2013 US008438849B2PDF Image | MULTI-LEVEL ORGANIC RANKINE CYCLE POWER SYSTEM
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