Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in Iran
This research investigates the effect of blade density and elevation above sea level on the startup time (<i>T<sub>s</sub></i>) and power coefficient (<i>C<sub>p</sub></i>) of a 1-kW two-bladed wind turbine. The study uses three Iranian hardwoods as th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Wind |
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| Online Access: | https://www.mdpi.com/2674-032X/3/3/19 |
| _version_ | 1797576318357864448 |
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| author | Vahid Akbari Mohammad Naghashzadegan Ramin Kouhikamali Wahiba Yaïci |
| author_facet | Vahid Akbari Mohammad Naghashzadegan Ramin Kouhikamali Wahiba Yaïci |
| author_sort | Vahid Akbari |
| collection | DOAJ |
| description | This research investigates the effect of blade density and elevation above sea level on the startup time (<i>T<sub>s</sub></i>) and power coefficient (<i>C<sub>p</sub></i>) of a 1-kW two-bladed wind turbine. The study uses three Iranian hardwoods as the blade material and four counties of Iran with low wind speeds and different elevations as the case studies. The BW-3 airfoil is considered as the blade profile. A multi-objective optimization process with the aid of the differential evolution (DE) algorithm is utilized to specify the chord length and twist angle. The findings demonstrate that, while the maximum <i>C<sub>p</sub></i> of the optimal blades designed with all three types of wood is high and equal to 0.48, the average <i>T<sub>s</sub></i> of the optimal blades designed with oak and hornbeam wood is 84% and 108% higher than that of alder wood, respectively. It is also observed that, while raising the elevation to 2250 m decreases the <i>C<sub>p</sub></i> by only 2.5%, the ideal blade designed to work at sea level could not manage to start rotating at a height of 1607 m and above. Finally, an improvement in the <i>T<sub>s</sub></i> and <i>C<sub>p</sub></i> was observed by performing optimization based on the local atmospheric conditions associated with the incrementing blade chord length at high elevations. |
| first_indexed | 2024-03-10T21:50:34Z |
| format | Article |
| id | doaj.art-657c31f3bccb4eed8ed55a1f85bc0c2a |
| institution | Directory Open Access Journal |
| issn | 2674-032X |
| language | English |
| last_indexed | 2024-03-10T21:50:34Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Wind |
| spelling | doaj.art-657c31f3bccb4eed8ed55a1f85bc0c2a2023-11-19T13:27:35ZengMDPI AGWind2674-032X2023-08-013332034210.3390/wind3030019Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in IranVahid Akbari0Mohammad Naghashzadegan1Ramin Kouhikamali2Wahiba Yaïci3Mechanical Engineering Department, University Campus 2, University of Guilan, Rasht 4144784475, IranMechanical Engineering Department, University of Guilan, Rasht 4199613776, IranMechanical Engineering Department, Isfahan University of Technology, Isfahan 8415683111, IranCanmetENERGY Research Centre, Natural Resources Canada, Ottawa, ON K1A 1M1, CanadaThis research investigates the effect of blade density and elevation above sea level on the startup time (<i>T<sub>s</sub></i>) and power coefficient (<i>C<sub>p</sub></i>) of a 1-kW two-bladed wind turbine. The study uses three Iranian hardwoods as the blade material and four counties of Iran with low wind speeds and different elevations as the case studies. The BW-3 airfoil is considered as the blade profile. A multi-objective optimization process with the aid of the differential evolution (DE) algorithm is utilized to specify the chord length and twist angle. The findings demonstrate that, while the maximum <i>C<sub>p</sub></i> of the optimal blades designed with all three types of wood is high and equal to 0.48, the average <i>T<sub>s</sub></i> of the optimal blades designed with oak and hornbeam wood is 84% and 108% higher than that of alder wood, respectively. It is also observed that, while raising the elevation to 2250 m decreases the <i>C<sub>p</sub></i> by only 2.5%, the ideal blade designed to work at sea level could not manage to start rotating at a height of 1607 m and above. Finally, an improvement in the <i>T<sub>s</sub></i> and <i>C<sub>p</sub></i> was observed by performing optimization based on the local atmospheric conditions associated with the incrementing blade chord length at high elevations.https://www.mdpi.com/2674-032X/3/3/19renewable energysmall wind turbinewind energyblade materialelevationtimber blade |
| spellingShingle | Vahid Akbari Mohammad Naghashzadegan Ramin Kouhikamali Wahiba Yaïci Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in Iran Wind renewable energy small wind turbine wind energy blade material elevation timber blade |
| title | Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in Iran |
| title_full | Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in Iran |
| title_fullStr | Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in Iran |
| title_full_unstemmed | Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in Iran |
| title_short | Evaluation of Regional Elevation and Blade Density Effects on the Efficiency of a 1-kW Wind Turbine for Operation in Low-Wind Counties in Iran |
| title_sort | evaluation of regional elevation and blade density effects on the efficiency of a 1 kw wind turbine for operation in low wind counties in iran |
| topic | renewable energy small wind turbine wind energy blade material elevation timber blade |
| url | https://www.mdpi.com/2674-032X/3/3/19 |
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