Investigation of Effective Parameters on Gorlov Vertical Axis Wind Turbine

Moghimi, Mahdi; Motawej, Hadi

doi:10.1134/s0015462820030106

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…In the case of Vshaped rotor (or "Y" or "sunflower") with the two-bladed fixed geometry, each blade is attached to the rotor hub at its root at a fixed angle to the vertical forming a "V" [37]. Helical-shaped (or Gorlov) rotor consists of straight and curved blades that are helically twisted around the rotational axis; a helical-bladed wind turbine's highest coefficient of performance ranges between 0.25 and 0.479, even if it shows notable unsteadiness in the power coefficient over the course of a single turbine revolution [38,39].…”

Section: Small-scale Wind Turbines: Main Classifications Performance ...mentioning

confidence: 99%

“…They are commonly employed for power generation due to their high rotational speed. However, they lack self-starting capability and exhibit lower starting torque, making them less reliable in regions with weak prevailing winds [39]. On the other hand, Savonius rotors are drag-based turbines known for their selfstarting nature, which allows them to initiate rotation even at stream velocities of 1.0 m/s [40].…”

Section: Small-scale Wind Turbines: Main Classifications Performance ...mentioning

confidence: 99%

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Commercial Small-Scale Horizontal and Vertical Wind Turbines: A Comprehensive Review of Geometry, Materials, Costs and Performance

Rosato,

Perrotta,

Maffei

2024

Energies

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The effective exploitation of renewable energy sources is one of the most effective solutions to counter the energy, environmental and economic problems associated with the use of fossil fuels. Small-scale wind turbines (converting wind energy into electric energy with a power output lower than 50 kW) have received tremendous attention over the past few decades thanks to their reduced environmental impact, high efficiency, low maintenance cost, high reliability, wide wind operation range, self-starting capability at low wind speed, limited installation space, reduced dependence on grid-connected power and long transmission lines, low capital costs, as well as the possibility to be installed in some urban settings. However, there are significant challenges and drawbacks associated with this technology from many different perspectives, including the significant discrepancy between theoretical performance data provided by the manufacturers and real field operation, that need to be investigated in greater depth in order to enable a more widespread deployment of small-scale wind turbines. In this review, a complete and updated list of more than 200 commercially available small-scale horizontal and vertical wind turbine models is provided and analysed, detailing the corresponding characteristics in terms of the number and material of blades, start-up wind speed, cut-in wind speed, cut-out wind speed, survival wind speed, maximum power, noise level, rotor diameter, turbine length, tower height, and specific capital cost. In addition, several scientific papers focusing on the experimental assessment of field performance of commercially available small-scale horizontal and vertical wind turbines have been reviewed and the corresponding measured data have been compared with the rated performance derived from the manufacturers’ datasheets in order to underline the discrepancies. This review represents an opportunity for the scientific community to have a clear and up-to-date picture of small-scale horizontal as well as vertical wind turbines on the market today, with a precise summary of their geometric, performance, and economic characteristics, which can enable a more accurate and informed choice of the wind turbine to be used depending on the application. It also describes the differences between theoretical and in-situ performance, emphasizing the need for further experimental research and highlighting the direction in which future studies should be directed for more efficient design and use of building-integrated small-scale wind turbines.

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Section: Small-scale Wind Turbines: Main Classifications Performance ...mentioning

confidence: 99%

Section: Small-scale Wind Turbines: Main Classifications Performance ...mentioning

confidence: 99%

Commercial Small-Scale Horizontal and Vertical Wind Turbines: A Comprehensive Review of Geometry, Materials, Costs and Performance

Rosato,

Perrotta,

Maffei

2024

Energies

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Design and analysis of gorlov helical hydro turbine on index of revolution

Jayaram

Bavanish

2022

International Journal of Hydrogen Energy

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A comprehensive investigation on Darrieus vertical axis wind turbine performance and self-starting capability improvement by implementing a novel semi-directional airfoil guide vane and rotor solidity

Mirmotahari,

Ghafoorian,

Mehrpooya

et al. 2024

Physics of Fluids

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Darrieus vertical axis wind turbine is classified as a lift-based power generation turbomachine. However, it is burdened with the limitations of mid-range efficiency and requiring initial torque for startup. The quest to improve the turbine's performance has focused on enhancing its aerodynamic performance and self-starting ability. One of the most effective approaches is to flow control and injection toward the rotor blades. This computational fluid dynamics research study utilizes a novel geometry known as the “Semi-Directional Airfoil Guide Vane” (SDAGV) to inject airflow smoothly and effectively toward the rotor blades at the upstream section. The investigation found that using a two-passage SDAGV increased rotor efficiency by up to 55% at a tip speed ratio (TSR) of 2.5. The pressure distribution analysis showed that azimuth angles between 90° and 135° significantly impacted the rotor's self-starting ability. Additionally, studying the turbine solidity revealed that a five-bladed rotor with SDAGV had a higher self-starting capability and efficiency than a two-bladed rotor with SDAGV. This was because its power coefficient (Cp) was approximately 160% greater at TSR = 1.4. Due to blade-to-blade interaction, high-solidity turbines from TSR = 2 onwards face performance challenges, which means their efficiency drops in the low-TSR range.

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Investigation of Effective Parameters on Gorlov Vertical Axis Wind Turbine

Cited by 3 publications

References 37 publications

Commercial Small-Scale Horizontal and Vertical Wind Turbines: A Comprehensive Review of Geometry, Materials, Costs and Performance

Commercial Small-Scale Horizontal and Vertical Wind Turbines: A Comprehensive Review of Geometry, Materials, Costs and Performance

Design and analysis of gorlov helical hydro turbine on index of revolution

A comprehensive investigation on Darrieus vertical axis wind turbine performance and self-starting capability improvement by implementing a novel semi-directional airfoil guide vane and rotor solidity

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