Design and Experimental Performance Characterization of a Three-Blade Horizontal-Axis Hydrokinetic Water Turbine in a Low-Velocity Channel

  1. Ferraiuolo, Roberta
  2. Gharib-Yosry, Ahmed
  3. Fernández-Jiménez, Aitor 1
  4. Espina-Valdés, Rodolfo 1
  5. Álvarez-Álvarez, Eduardo 1
  6. Del Giudice, Giuseppe
  7. Giugni, Maurizio
  1. 1 Universidad de Oviedo
    info

    Universidad de Oviedo

    Oviedo, España

    ROR https://ror.org/006gksa02

Konferenzberichte:
EWaS5

Datum der Publikation: 2022

Art: Konferenz-Beitrag

DOI: 10.3390/ENVIRONSCIPROC2022021062 GOOGLE SCHOLAR lock_openOpen Access editor

Ziele für nachhaltige Entwicklung

Zusammenfassung

The present work describes the design process of a 3D-printed prototype of a three-blade horizontal-axis hydrokinetic water turbine (HAHWT). The employed blade profile is an EPPLER818, which was previously studied through the Q-Blade software according to the velocity range presumed (v < 1 m/s) in the experiments. The prototype performance was studied in a recirculating water channel at the Polytechnic Engineering School of Mieres (Oviedo University), with a gate of variable height at the channel end, which allows for performing different hydrodynamic scenarios upon varying the considered flow rate. The results show that the extracted power increases due to the equally increased blockage ratio, which represents the ratio between the turbine area and the channel area. However, an excessive increase in the blockage ratio corresponds to a power reduction effect due to the reduction in the effective area and the generation of a two-phase air-water condition.