1. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Geometry of three airfoils that use in the MEXICO wind turbine blade

2. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Normalized local chord and pitch angel in the blade

3. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Sample mesh discretization for (a) RISOA1-21, (b) NACA , and (c) DU 91-W2-250 airfoils

4. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Arrangement of how to analysis a blade element

5. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Schematic representation of the turbine (inlet and outlet states)

6. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Airfoil performance with variable angel of attack: (a) NACA , (b) RISOA1-21, and (c) DU 91-W2-250

7. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Exergy destruction for wind turbine based on experimental data at various wind velocities

8. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Power production of the wind turbine based on all scenarios at various wind speeds

9. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Comparison of wind turbine performance based on experimental data and the BEM code at various wind velocities: (a) energy efficiency and (b) exergy efficiency

10. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Effect of roughness on wind turbine performance at various wind velocities: (a) energy efficiency and (b) exergy efficiency

11. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
The ratio of power coefficient (CP) to exergy efficiency computed from computational models and experimental data at various wind speeds

12. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Variation of power coefficient (CP) for all computational models versus power coefficient of the measurements (CPex), compared to the experimental reference (the black line)

13. Date of download: 12/26/2017
Copyright © ASME. All rights reserved.
From: Modeling of Energy and Exergy Efficiencies of a Wind Turbine Based on the Blade Element Momentum Theory Under Different Roughness Intensities
J. Energy Resour. Technol. 2016;139(2): doi: /
Figure Legend:
Variation of power coefficient (CP) for the corrected computational models employing roughness versus power coefficient of the measurements (CPex), compared to the experimental reference (the black line)