(19)
(11) EP 2 423 473 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.01.2014 Bulletin 2014/02

(43) Date of publication A2:
29.02.2012 Bulletin 2012/09

(21) Application number: 10161925.2

(22) Date of filing: 04.05.2010
(51) International Patent Classification (IPC): 
F01K 23/10(2006.01)
F01K 25/08(2006.01)
 F01K 25/10(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
BA ME RS

(30) Priority: 06.05.2009 US 436277

(71) Applicant: General Electric Company
Schenectady, NY 12345 (US)

(72) Inventors:
  • Lehar, Matthew Alexander
    80803, Muenchen (DE)
  • Freund, Sebastian Walter
    D-85774, Muenchen (DE)
  • Seghi, Giacomo
    51022, Bardalone (PT) (IT)

(74) Representative: Illingworth-Law, William Illingworth 
GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith
London W6 8BJ
London W6 8BJ (GB)

   


(54) An improved organic rankine cycle system and method


(57) An ORC system (10) configured to limit temperature of a working fluid (14) below a threshold temperature is provided. The ORC system (10) includes a heat source (16) configured to provide waste heat fluid (18). The ORC system (10) also includes a heat exchanger (20) coupled to the heat source (16), wherein the heat exchanger (20) includes multiple external (82) or internal (84) enhancement features. The external (82) enhancement features are configured to reduce a first heat transfer coefficient between the working fluid (14) and the waste heat fluid (18) from the heat source (16), external to the heat exchanger (20). The internal (84) enhancement features are configured to increase a second heat transfer coefficient between the working fluid (14) and the waste heat fluid (18) from a heat source (16), internal to the heat exchanger (20).







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Search report