Volume 3, 2018
|Number of page(s)||14|
|Section||Innovative Technologies and Integrated Systems for High Performance Buildings|
|Published online||03 May 2018|
Numerical investigation of the optimum wind turbine sitting for domestic flat roofs
School of Energy, Geoscience, Infrastructure and Society, Heriot-Watt University,
P.O. Box: 294 345,
Dubai, United Arab Emirates
* e-mail: H.N.Chaudhry@hw.ac.uk
Accepted: 11 March 2018
The power capacity of roof mounted wind turbines is dependent on several factors which influence its energy yield. In this paper, an investigation has been carried out using Computational Fluid Dynamics (CFD) to determine flow distribution and establish an optimum mounting location for a small wind turbine on a domestic flat roof. The realisable k-ε and SST k-ω turbulence models were compared to establish their consistency with one another with respect to the physical domain. Nine mounting locations were considered for a pole mounted wind turbine. Three windward positions on the upwind side of the flat surfaced building were considered as viable locations for mounting the small wind turbine. Out of the three windward locations, the central upwind (1,0) mounting position was seen to be producing the highest velocity of 5.3 m/s from the available ambient velocity which was 4 m/s. Therefore, this mounting location provided the highest extractable power for the wind turbine. Conclusively, wind properties along with the mounting locations can play a significant role in either enhancing or diminishing the small wind turbine's performance on a domestic flat roof.
Key words: Betz limit / CFD / roof mounted / turbulence / wind turbine
© S.M. Ishfaq and H.N. Chaudhry, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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