Abstract
Wind tunnel tests have been performed of individual and paired H-type Darrieus vertical-axis wind turbines. The turbines in the paired configuration are closely spaced, at 1.2 and 1.3 rotor diameters shaft to shaft, and are counter-rotating. Two directions of rotation were studied, one where the facing (inner) blades move along with the incoming flow, and one where the facing blades move against the wind. The wind tunnel tests confirm a net increase in the power coefficient of the paired configuration compared with twice the power coefficient of the individual turbine. We found average relative increases in the power coefficients between 13% and 16%, which is consistent with numerical studies available in the literature.
| Original language | English |
|---|---|
| Article number | 10.1016/j.renene.2019.06.115 |
| Pages (from-to) | 181-187 |
| Number of pages | 7 |
| Journal | Renewable Energy |
| Volume | 146 |
| DOIs | |
| Publication status | Published - Feb 2020 |
Bibliographical note
Funding Information:The authors would like to thank the technical staff of the wind tunnels we used at the Vrije Universiteit Brussel, the Technische Universiteit Delft, the von Karman Institute for Fluid Dynamics, and the Politecnico di Milano. In particular, the support from Marco Belloli, Ilmas Bayati, Carlos Simão Ferreira, Simon Horb, Bruce LeBlanc, Nicolas Parneix, Luca Ronchi, and Alain Wery, is gratefully acknowledged. The financial support of Nenuphar and of the department of Engineering Technology is acknowledged. The authors would also like to thank the master students Evert Van Geite, Ruben De Smet, and Laurent Gutty, who built and tested early versions of the setup.
Publisher Copyright:
© 2019 Elsevier Ltd
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
Keywords
- Paired wind turbines
- Vertical-axis wind turbine
- Wind tunnel experiments