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Systèmes géothermiques à Cycle Organique de Rankine utilisant des détendeurs à vis de grande dimension.

Geothermal ORC systems using large screw expanders.

Numéro : pap. 1470

Auteurs : BIEDERMAN T., BRASZ J. J.

Résumé

This paper describes an air-cooled low-temperature Organic Rankine Cycle (ORC) Power Recovery system with a screw expander as its power unit. The screw expander is specifically designed for ORC expansion and has a unique rotor profile. Manufacturing the screw expanders at a plant which already produces screw compressor hardware has resulted in reduced development time and lower development cost. Low screw expander cost has been realized by assembling the screw expanders in parallel with the higher volume screw compressors. The net electrical output power of the system's ORC screw expander varies from 5kW to 950 kWel which is an order of magnitude larger than the output power of currently available ORC screw expanders. Following the development of a 300 kWel prototype unit and its installation and successful operation at Chena Hot Springs near Fairbanks, AK, four commercial production units were developed for geothermal power production at Lightning Dock in New Mexico. All units use R245fa as refrigerant. Initial operating experience with these ORC systems will be presented.

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Geothermal ORC systems using large screw expanders.
  • Identifiant de la fiche : 30013919
  • Langues : Anglais
  • Source : 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Date d'édition : 14/07/2014

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