Choosing an appropriate timber for a small wind turbine blade: A comparative study

Pourrajabian, Abolfazl; Dehghan, Maziar; Javed, Adeel; Wood, David

doi:10.1016/j.rser.2018.10.010

Cited by 36 publications

(33 citation statements)

References 33 publications

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“…Latoufis et al [102] proposed a SWT blade made of wood with an estimated cost of 650 EUR for a 2.4 m diameter rotor. Pourrajabian et al [103] investigated four timber species (i.e., alder, ash, beech, and hornbeam) for use in small blades. The authors included the design and optimization of solid and hollow blades by using genetic algorithms.…”

Section: Manufacturing Proceduresmentioning

confidence: 99%

“…However, when the blade length increases (approximately more than 1.5 m), it is challenging to obtain knot-free planks, limiting the use of timber. Here is where composite laminates start to play an essential role by providing an alternative with higher specific properties to reduce inertia [103]. The most common composite materials employed include glass fiber and carbon fiber as reinforcements and polymers (resins) such as vinylester, polyester, and epoxy.…”

Section: Composite Reinforced Materialsmentioning

confidence: 99%

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Technological and Operational Aspects That Limit Small Wind Turbines Performance

et al. 2020

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Small Wind Turbines (SWTs) are promissory for distributed generation using renewable energy sources; however, their deployment in a broad sense requires to address topics related to their cost-efficiency. This paper aims to survey recent developments about SWTs holistically, focusing on multidisciplinary aspects such as wind resource assessment, rotor aerodynamics, rotor manufacturing, control systems, and hybrid micro-grid integration. Wind resource produces inputs for the rotor’s aerodynamic design that, in turn, defines a blade shape that needs to be achieved by a manufacturing technique while ensuring structural integrity. A control system may account for the rotor’s aerodynamic performance interacting with an ever-varying wind resource. At the end, the concept of integration with other renewable source is justified, according to the inherent variability of wind generation. Several commercially available SWTs are compared to study how some of the previously mentioned aspects impact performance and Cost of Electricity (CoE). Understanding these topics in the whole view may permit to identify both tendencies and unexplored topics to continue expanding SWTs market.

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Section: Manufacturing Proceduresmentioning

confidence: 99%

Section: Composite Reinforced Materialsmentioning

confidence: 99%

Technological and Operational Aspects That Limit Small Wind Turbines Performance

et al. 2020

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“…Mechanical analysis of wind turbine blades is also important from the point of view of their inertia. Pourrajabian et al [9] optimized the wooden blade geometry using genetic algorithms, in order to maximize rotor efficiency while preserving blade loadings in a safe range and ensure low blade inertia for low cut-in wind speed. The authors concluded that not every timber may be successfully used over a wide spectrum of velocity and identified alder as a preferable choice for wooden SWT blades.…”

Section: Small Wind Turbines-interest and Researchmentioning

confidence: 99%

Fluid–Structure Interaction Numerical Analysis of a Small, Urban Wind Turbine Blade

2020

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While the vast majority of the wind energy market is dominated by megawatt-size wind turbines, the increasing importance of distributed electricity generation gives way to small, personal-size installations. Due to their situation at relatively low heights and above-ground levels, they are forced to operate in a low energy-density environment, hence the important role of rotor optimization and flow studies. In addition, the small wind turbine operation close to human habitats emphasizes the need to ensure the maximum reliability of the system. The present article summarizes a case study of a small wind turbine (rated power 350 W @ 8.4 m/s) from the point of view of aerodynamic performance (efficiency, flow around blades). The structural strength analysis of the blades milled for the prototype was performed in the form of a one-way Fluid–Structure Interaction (FSI). Blade deformations and stresses were examined, showing that only minor deformations may be expected, with no significant influence on rotor aerodynamics. The study of an unorthodox material (PA66 MO polyamide) and application of FSI to examine both structural strength and blade deformation under different operating conditions are an approach rarely employed in small wind turbine design.

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“…Hence, Alder solid blade is preferred over others whereas alder and beech timbers for the hollow blades for windy regions. All timbers types are promising for areas with lower wind speed and also where starting performance are emphasized (Pourrajabian et al, 2019).…”

Section: Timbermentioning

confidence: 99%

A Strategic Study on the Environmental Impacts of Wind Turbine Blade Materials, their Improvements, Economics and End-Life-Options

Prakash

Glivin

Kalaiselvan

et al. 2020

Energy Research Journal

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Wind energy is a great alternative to solar energy (During monsoon) along with conventional non-renewable energy sources and has a potential market growing exponentially. Modern 3 Blade HAWTs are most dominant in the market and have high efficiency. Blades are 15 to 20% of the cost of the wind turbine unit and also exposed to the environment. Therefore it is crucial to employ suitable material that has lightweight, high stiffness and strength. Carbon fibre, Glass Fibre, Timber are some materials that are used for blade manufacturing. Design can be improved by stress deformation analysis, load estimation via methodology of blade element momentum or computational simulation using deep learning. Also, by developing a bio-inspirational method via 1% Gravo-Aeroelastic Scaling (GAS), cavity optimization approach and vacuum infusion or reinforcing resins in composites, to improve mechanical properties. To prevent surface erosion due to acidic or saline or rainwater, it is coated with a protective layer. Mechanical recycling of the blade material composites is both simpler and economically viable in comparison to thermal and chemical recycling.

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Choosing an appropriate timber for a small wind turbine blade: A comparative study

Cited by 36 publications

References 33 publications

Technological and Operational Aspects That Limit Small Wind Turbines Performance

Technological and Operational Aspects That Limit Small Wind Turbines Performance

Fluid–Structure Interaction Numerical Analysis of a Small, Urban Wind Turbine Blade

A Strategic Study on the Environmental Impacts of Wind Turbine Blade Materials, their Improvements, Economics and End-Life-Options

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