Encasing of wind turbines in ducts to increase wind energy extraction has been under study for several decades. Ducts are meant to accelerate the wind speed past the wind turbine rotor enclosed in the duct. The most common duct used in wind turbines is a diffuser. Wind speed augmentation in diffusers depends on the geometrical shape parameters of the diffuser, mainly the diffuser expansion angle 
and the non-dimensional length 
. This paper addresses wind speed augmentation by empty conical diffusers. It presents the dependence of the wind speed augmentation on the diffuser geometrical shape parameters and the optimum geometrical shape parameters for maximum wind speed augmentation. It is shown that for a given , wind speed augmentation increases with 
up to the maximum wind speed augmentation and starts to decrease. Each has a unique which gives the maximum wind speed augmentation. It has also been shown that the maximum wind speed augmentation increases with For 
wind speed increased from 1.48 m/s to 1.55 m/s.
| Published in | International Journal of Energy and Power Engineering (Volume 5, Issue 6) |
| DOI | 10.11648/j.ijepe.20160506.11 |
| Page(s) | 177-181 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2016. Published by Science Publishing Group |
Wind Energy, Wind Speed Augmentation, Diffuser Geometrical Shape Parameters
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APA Style
Peace-Maker Masukume, Golden Makaka, David Tinarwo. (2016). Optimum Geometrical Shape Parameters for Conical Diffusers in Ducted Wind Turbines. International Journal of Energy and Power Engineering, 5(6), 177-181. https://doi.org/10.11648/j.ijepe.20160506.11
ACS Style
Peace-Maker Masukume; Golden Makaka; David Tinarwo. Optimum Geometrical Shape Parameters for Conical Diffusers in Ducted Wind Turbines. Int. J. Energy Power Eng. 2016, 5(6), 177-181. doi: 10.11648/j.ijepe.20160506.11
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Download@article{10.11648/j.ijepe.20160506.11,
author = {Peace-Maker Masukume and Golden Makaka and David Tinarwo},
title = {Optimum Geometrical Shape Parameters for Conical Diffusers in Ducted Wind Turbines},
journal = {International Journal of Energy and Power Engineering},
volume = {5},
number = {6},
pages = {177-181},
doi = {10.11648/j.ijepe.20160506.11},
url = {https://doi.org/10.11648/j.ijepe.20160506.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijepe.20160506.11},
abstract = {Encasing of wind turbines in ducts to increase wind energy extraction has been under study for several decades. Ducts are meant to accelerate the wind speed past the wind turbine rotor enclosed in the duct. The most common duct used in wind turbines is a diffuser. Wind speed augmentation in diffusers depends on the geometrical shape parameters of the diffuser, mainly the diffuser expansion angle and the non-dimensional length . This paper addresses wind speed augmentation by empty conical diffusers. It presents the dependence of the wind speed augmentation on the diffuser geometrical shape parameters and the optimum geometrical shape parameters for maximum wind speed augmentation. It is shown that for a given , wind speed augmentation increases with up to the maximum wind speed augmentation and starts to decrease. Each has a unique which gives the maximum wind speed augmentation. It has also been shown that the maximum wind speed augmentation increases with For wind speed increased from 1.48 m/s to 1.55 m/s.},
year = {2016}
}
TY - JOUR T1 - Optimum Geometrical Shape Parameters for Conical Diffusers in Ducted Wind Turbines AU - Peace-Maker Masukume AU - Golden Makaka AU - David Tinarwo Y1 - 2016/11/09 PY - 2016 N1 - https://doi.org/10.11648/j.ijepe.20160506.11 DO - 10.11648/j.ijepe.20160506.11 T2 - International Journal of Energy and Power Engineering JF - International Journal of Energy and Power Engineering JO - International Journal of Energy and Power Engineering SP - 177 EP - 181 PB - Science Publishing Group SN - 2326-960X UR - https://doi.org/10.11648/j.ijepe.20160506.11 AB - Encasing of wind turbines in ducts to increase wind energy extraction has been under study for several decades. Ducts are meant to accelerate the wind speed past the wind turbine rotor enclosed in the duct. The most common duct used in wind turbines is a diffuser. Wind speed augmentation in diffusers depends on the geometrical shape parameters of the diffuser, mainly the diffuser expansion angle and the non-dimensional length . This paper addresses wind speed augmentation by empty conical diffusers. It presents the dependence of the wind speed augmentation on the diffuser geometrical shape parameters and the optimum geometrical shape parameters for maximum wind speed augmentation. It is shown that for a given , wind speed augmentation increases with up to the maximum wind speed augmentation and starts to decrease. Each has a unique which gives the maximum wind speed augmentation. It has also been shown that the maximum wind speed augmentation increases with For wind speed increased from 1.48 m/s to 1.55 m/s. VL - 5 IS - 6 ER -
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