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Caractérisation des pertes par frottement dans une turbine de Pelton.

Characterization of friction loss in Pelton turbine.

Numéro : pap. n. R13, 2274

Auteurs : BEUCHER Y., BOULAWZ KSAYER E., CLODIC D.

Résumé

The Pelton turbine can be used as a two-phase expander. The characterization of the Pelton turbine as two-phase expander consists in analyzing the power loss sources to evaluate the machine performance. In this study, the friction loss of a Pelton wheel is presented. A Pelton wheel has been realized with aluminum buckets and has been mounted on a test bench. The examination of experiments dealing with drag force in the Pelton turbine shows that the wheel friction losses are an important part of turbine losses when it is shrouded and operate in high density atmosphere. Experimental results show that losses by drag friction of a turbine enclosed in 0.5 MPa of R-134a atmosphere and rotating at 3000 rpm, can reach 3000 W, which is equal to the available power in the fluid jet. A CFD model of Pelton wheel has been done to analyze and reduce the friction losses in order to develop an efficient turbine. Modeling shows that with lowering the number and the size of the buckets, friction loss can be decreased by 30%.

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 : Characterization of friction loss in Pelton turbine.
  • Identifiant de la fiche : 30000746
  • Langues : Anglais
  • Source : 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 12/07/2010

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