Review Paper of Savonius Vertical Axis Wind Turbine Rotor Blade (original) (raw)
Related papers
E3S Web of Conferences, 2021
In this study, the researcher applied an experimental method to examine the performance of theSavonius-type turbine, in which variations in the blade angle were 85°, 95°, 105°, 110°, 115°, and 125°, variations in wind speed were 3 and 4.1 m/s, and variations in balancing force were 0.4 and 0.9 kg. The results showed that, of the five examined variations of the blade angle, the 125° blade produced the highest rotation (n) compared to the others. It generated 115.3 rpm but without a balanced force. Furthermore, the turbine performance at a wind speed (V) of 4.1 m/s, a balancing force (F) of 0.9 kg, and a blade angle of 125° produced the rotational speed (n) of 69.6 rpm, the turbine power (Pt) of 6.43 watts, the torque (T) of 1.765 N.m, the tip-speed ratio (λ) of 0.355, and the turbine efficiency 66.22%. Meanwhile, at a wind speed of 3 m/s, a balancing force (F) of 0.9 kg, and a blade angle of 125°, it generated the rotational speed (n) of 28.6 rpm, the turbine power (Pt) of 2.64 watts...
Performance Analysis of Novel Blade Design of Vertical Axis Wind Turbine
2019 International Conference on Sustainable Energy Engineering and Application (ICSEEA), 2019
Vertical Axis Wind Turbine (VAWT) has advantages over Horizontal Axis Wind Turbine (HAWT) in unstable wind direction conditions, moderate, and intermittent wind sources, especially wind in an area of archipelago of Indonesia. To improve the VAWT performance, one of the influencing factors is blade design. The model of blade design will be affected by the output power. Therefore, the choice of blade design will be affected by the coefficient of power. The blade design was the airfoil of the type-H rotor of NACA 4212. Several empirical hypotheses obtained it through the practical experience subjected to use of the savonius blades. It will be shown in this study was to compare design a new type-H rotor VAWT blade using Computational Fluid Dynamic (CFD) software. The novel blade design was upper-curve H-blade of NACA 4212. It showed the result of the analytical analysis to be compared with the same upper-curve inverted blade, and with the upper-lower blade. The results of the performanc...
Energies
Small-scale vertical-axis wind power generation technologies such as Savonius wind turbines are gaining popularity in suburban and urban settings. Although vertical-axis wind turbines (VAWTs) may not be as efficient as their horizontal-axis counterparts, they often present better opportunities for integration within building structures. The main issue stems from the suboptimal aerodynamic design of Savonius turbine blades, resulting in lower efficiency and power output. To address this, modern turbine designs focus on optimizing various geometric aspects of the turbine to improve aerodynamic performance, efficiency, and overall effectiveness. This study developed a unique optimization method, incorporating a new blade geometry with guide gap flow for Savonius wind turbine blade design. The aerodynamic characteristics of the Savonius wind turbine blade were extensively analyzed using 3D ANSYS CFX software. The optimization process emphasized the power coefficient as the objective fun...
Study on performance of a savonius wind turbines related with the blade angle
Maejo International Journal of Energy and Environmental Communication, 2019
This research aimed to compare the performance of Savonius vertical axis wind turbines through blade numbers and different blade angles. In this study, applicable turbines having 4, 6, 8, 12, 16 and 18 numbers of blades with the angles of the blades of -15°, -5°, 0°, 5° and 15°, respectively. The rotor used was a semicircle shaped blade made from PVC material and has a blade diameter of 6 cm and 30 cm for both rotor diameter and height. The turbine was tested deadweight range of 0-0.49 kg at 4 m/s wind speed. The results showed that the blade angle has a positive effect on increasing the power and torque coefficient of Savonius wind turbine, specifically on blades less than 16. The highest power and torque coefficient was obtained from the turbine having16 blades at an angle of 5°. This configuration also found that the maximum power and torque coefficient in the tip speed ratio ranging from 0.3-0.4 are 0.2519 and 0.5858, respectively.
Design of Savonius vertical axis wind turbine for low speed wind field
THE 6TH INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY (ICST21): Challenges and Opportunities for Innovation Research on Science Materials, and Technology in the Covid-19 Era
Wind was a potential renewable energy source in Indonesia. The basis for the utilization of wind energy was in the design of the turbine. Savonius vertical axis wind turbine can be used for low-speed and unstable winds in residential areas. Analytical solutions can be used for the optimization of wind turbine structural design. The parameters of the horizontal and vertical sections of the turbine greatly affect the performance of the turbine. The optimization of the structure in the horizontal section is carried out by modifying the overlap ratio and modifying the blade curvature. Based on the literature, the optimum overlap ratio of a turbine with two blades was 0.15. In addition, the use of turbine blades with a semicircle design can improve turbine performance. Optimization of the structure in the vertical section was done by tappering the blades to reduce the initial torque value of the turbine. This analytical approach resulted in a Savonius wind turbine design that theoretically satisfies the working conditions in residential areas.
Design and Fabrication of Savonius Vertical Axis Wind Turbine
2021
1Student, Aeronautical Engineering ADCET, Ashta, Sangli, Maharashtra, India. 2Student, Mechanical Engineering, MVPS’s KBT College of Engineering, Nashik, Maharashtra, India. 3Student, Mechanical Engineering, NBN Sinhgad Technical Institutes Campus, Pune, India. 4Student, Aeronautical Engineering ADCET, Ashta, Sangli, Maharashtra, India. -----------------------------------------------------------------------***---------------------------------------------------------------------Abstract: The project deals with the design and fabrication of four blades Savonius Vertical Axis Wind Turbine. It is a type of Vertical Axis Wind Turbine (VAWT) which is used to produce power. The turbine has four blades in airfoil shaped and connected to the rotating main shaft using designed bearing and assembled on sturdy structure. The power calculated with respect to the velocity of wind is included. The components are made from aluminum, steel and wood which are assembled together after manufacturing of...
Review of Specific Performance Parameters of Vertical Wind Turbine Rotors Based on the SAVONIUS Type
Energies
Increasing energy demand and environmental regulations around the world provide an adequate framework for developing methods of obtaining energy from renewable sources. Wind force is a resource with a high potential through which green energy can be obtained with no negative impact on the environment. Different turbine typologies have been developed, which can convert the wind force into mechanical and electrical energy through turbine rotational motion. Starting from the classic vertical-axis SAVONIUS rotor model, other models have been designed, which, according to the numerical studies and experimental test results, show higher performance parameters in operation. Such models present specific rotor blade geometries to achieve better operational results in terms of shaft torque and generated power. There are multiple research results from numerical analysis on virtual models or experimental tests that use rotor models in different constructive configurations aiming to improve oper...
Influence of Design Parameters on the Performance of Savonius Wind Turbine
International Journal of Innovative Science and Research Technology, 2022
In this era of technological advancement, the demand for energy requirements is increasing globally. With a limited stock of fossil fuels and the pollution issue related to the burning of these fuels, the world needs to find an alternative of it, which must be cleaner and greener. This is where wind energy comes in and plays a vital role as it is a clean source and has a very promising future in the global energy sector. Savonius turbine is a type of vertical axis wind turbine (VAWT) which is predominantly rotated by the drag force from the wind. It is self starting and can extract wind energy from low wind speeds and is very practical to install it in crowded places due to its compact geometry. This thesis is a review of the previous works presented by different authors. This project aims at discovering the influence of various design and performance parameters (aspect ratio, overlap ratio, tip speed ratio, blade shape, number of rotor blades and number of stages), turbulence models and turbine geometries on the performance of Savonius vertical axis wind turbine. A conventional Savonius vertical axis wind turbine (VAWT) with aspect ratio of 1, overlap ratio of 0.15 and TSR of 0.8 shows the maximum coefficient of power (CP) The performance of conventional rotors can be enhanced by use of helical rotors; multi-staging and other modified blade geometries. Helical rotors with blade twist angle of 90 0 are better performing rotors than the conventional rotors. Modified Bach type rotor with a blade arc angle of 135 0 , aspect ratio of 1.1, overlap ratio of 0.1 and at tip speed ratio (TSR)= 0.8 show the maximum coefficient of power (CP) of 0.30. The results of numerical analyses were compared with that of the experimental data and it is found that for 2-D numerical analyses, realizable k-ɛ turbulence model shows better accuracy of estimation and for 3-D analyses, SST kω turbulence model shows better agreement with the experimental data.
Study of a Savonius Type Wind Turbines for its Aerodynamic Characteristics
The primary objective of this paper is to conduct a comparative study on the number of blade and different blade angles of a domestic savonius vertical axis wind turbine with semicircular shaped blades under a range of wind speeds. A domestic scale 6bladed Savonius Vertical Axis Wind Turbine was manufactured to investigate the effect of blade number and blade angle on the maximum power generation by the turbine. Maximum power curves as a function of wind speeds were established for each configuration. The results show that the blade angle has positive effect to increase the power output of a Savonius turbine to a significant amount. The most efficient configuration is the 6bladed turbine with an angle of attack of 10°. This configuration generated 27% more power compared to the 0° angle of attack at the wind speed from 10 to 15 km/h.
A Review: Aerodynamic Analysis on Vertical Axis Wind Turbine Blade
International Journal of Advance Engineering and Research Development, 2014
This review contains a various work was done on wind blade carried out by different authors around the world wide. It will give the information about different techniques used to enhance the performance of wind mill blade. From the early stage of the project, various literature studies have been done. Use some of the information from the literature review to achieve our target. There are many research are performed on wind turbine all research are concentrated on blade profile in some research on 2D and 3D profile CFD si mulation is done. This review paper aims at to move forward in this research on blade profile have critically analyzed some paper. The aim of this literature is angle of attack, wind blade material, twisting of blade airfoil, Vibration on blade and selection of Blade airfoil. 'Wind Power' When evaluating any change to the design of a wind turbine, it is critical that the designer evaluate the impact of the design change on the system cost and performance.