Urban wind conditions and small wind turbines in the built environment: A review

Kc, Anup; Whale, Jonathan; Urmee, Tania

doi:10.1016/j.renene.2018.07.050

Cited by 151 publications

(59 citation statements)

References 78 publications

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“…The non-trivial wind characteristics (presence of turbulence and rapidly changing wind direction) make the Lichtenegg site an appropriate environment to test VASWTs. In addition, to better consider the interaction of the wind with buildings, the turbine has been installed on the rooftop of a small structure, 7 m 2 , that affects the incoming wind profile [25]. The building was also necessary to investigate the effects of the presence of the turbine on the structure itself for what concerns vibrations and noises.…”

Section: Methods and Facilitiesmentioning

confidence: 99%

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

et al. 2019

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In the recent years, distributed energy production has been one of the main research topics about renewable energies. The decentralization of electric production from wind resources raises the issues of reducing the size of generators, from the MW scale of industrial wind farm turbines to the kW scale, and possibly employing them in urban areas, where the wind flow is complex and extremely turbulent because of the presence of buildings and obstacles. On these grounds, the use of small-scale vertical axis small wind turbines (VASWT) is a valid choice for on-site generation (OSG), considering their low sensitivity with respect to turbulent flow and that there is no need to align the turbine with wind direction, as occurs with horizontal axis small wind turbines (HASWT). In addition, VASWTs have a minor acoustic impact with respect to HASWTs. The aim of this paper is to study the interactions that take place between a 1.2 kW, vertical axis, Darrieus VASWT turbine and a small, experimental building, in order to analyze the noise and the vibrations transmitted to the structure. One method to damp the vibrations is then assessed through spectral analysis of data acquired through accelerometers located both in the mast of the wind turbine and at the building walls. The results confirm the usefulness of dampers to increase the building comfort regarding vibrations.

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Section: Methods and Facilitiesmentioning

confidence: 99%

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

et al. 2019

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“…It is also justifiable to focus on small and small scale wind turbine as the world"s trend nowadays is moving from large size to smaller size wind turbines [9]. Barriers for large turbines are such as the availability of large scale on-shore wind farm sites, the negative impact of grid power quality, low public acceptability and losses in transmission and distribution of electricity to the consumers [10]. In addition, it was shown that large wind farms may cause significant climate change especially in terms of temperature increased [11] and escalate rate of precipitation [12,13].…”

Section: Fig 3 the Solar-diesel-wind Hybrid Power Plant[5]mentioning

confidence: 99%

“…What important is the design of the wind turbine for Malaysia"s applications must provide the best in three aspects: the highest aerodynamic efficiency, the most effective wind turbine structure and the good self-starting capability. Several review papers have been published [9,10,[12][13] but in this review paper, focus is given to the first aspect i.e. improving the aerodynamic performance of small scaled wind turbines that are suitable for the country of Malaysia.…”

Section: Fig 3 the Solar-diesel-wind Hybrid Power Plant[5]mentioning

confidence: 99%

Aerodynamic Performances of Small Scale Horizontal Axis Wind Turbine Blades for Applications in Malaysia

Roslan,

Rasid,

Toh

et al. 2019

IJRTE

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Wind energy is one of the most viable options for clean and sustainable energy production. In Malaysia where wind source has been considered scarce, the capacity of installed wind energy production is very low. However, studies have shown that it is worthwhile to produce wind energy at several potential sites in this country. For this purpose, it is crucial that the designed turbine blade gives the highest possible blade power efficiency while structure wise, the turbine blade need to be effective in terms of avoiding possible failures. The maximum power efficiency means the blade does not only provide profile that gives maximum sliding ratio but also it must operate at the corresponding angle of attack, 𝜶𝒎𝒂𝒙 that gives this ratio. At the same time, the blade must be small enough to have low weight to allow it to self-start in the low wind region. In this paper, the study is focused on the aerodynamic aspect of the design of wind turbine blade that will give the maximum power efficiency. Four factors that determine aerodynamic performance of the turbine blades are discussed: the wind condition, the airfoil profile, the blade geometry and the losses. In most of the factor, adjustments are made such that the blade operates at around the 𝜶𝒎𝒂𝒙 so that the sliding ratio and thus power coefficient are maximum.

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“…The turbulence can be minimum at 50% above the building height. To understand the performance, power output, and loading capacity of a small wind turbine, the small wind turbine installation inflow in the built environment, and on understanding to what extent the international standard design of small wind turbine is done for installation in built environment [9].…”

Section: Major Findings Based On Darrieus Turbinementioning

confidence: 99%

Wind energy investigation of straight-bladed vertical axis wind turbine using computational analysis

Roga¹

2018

EAI Endorsed Transactions on Energy Web

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Vertical axis wind turbines received renewed attention for increasing offshore wind energy harvesting and in urban environments. This turbine reflects a specific type of technology that generates electricity from wind, which is renewable sources of energy. This research explores the effect of blade profile modifications on the VAWT aerofoil NACA0012 and NACA2415. Analysis of the lift/drag coefficient and calculation of the average torque/self-starting potential of NACA0012 and NACA2415 for NACA0012, as this is a significantly better measure of the power generated at different pitch angles and comparison of both profiles. The dataset is created using Computational Fluid Dynamics (CFD) simulations, which were performed in ANSYS-Fluent. Various parameters, such as the number, thickness, and angle of attack of the Reynolds no. were investigated. The aerodynamics of the wind turbine blade is shown to increase the optimized form of the modified aerofoil.

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Urban wind conditions and small wind turbines in the built environment: A review

Cited by 151 publications

References 78 publications

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

Experimental Vibration Analysis of a Small Scale Vertical Wind Energy System for Residential Use

Aerodynamic Performances of Small Scale Horizontal Axis Wind Turbine Blades for Applications in Malaysia

Wind energy investigation of straight-bladed vertical axis wind turbine using computational analysis

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