scholarly journals CFD-Based Performance Analysis and Experimental Investigation of Design Factors of Vertical Axis Wind Turbines under Low Wind Speed Conditions in Thailand

2017 ◽  
Vol 05 (04) ◽  
pp. 86-98 ◽  
Author(s):  
Suchaya Unsakul ◽  
Chaianant Sranpat ◽  
Pongchalat Chaisiriroj ◽  
Thananchai Leephakpreeda
Keyword(s):  
Experimental Investigation ◽  
Wind Speed ◽  
Performance Analysis ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Low Wind Speed ◽  
Vertical Axis Wind Turbines ◽  
Design Factors

scholarly journals CFD-based Performance Analysis on Design Factors of Vertical Axis Wind Turbines at Low Wind Speeds

2017 ◽  
Vol 138 ◽  
pp. 500-505 ◽  
Author(s):  
Chaianant Sranpat ◽  
Suchaya Unsakul ◽  
Premchai Choljararux ◽  
Thananchai Leephakpreeda
Keyword(s):  
Performance Analysis ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Wind Speeds ◽  
Vertical Axis Wind Turbines ◽  
Low Wind Speeds ◽  
Design Factors

scholarly journals Analysis of the Patent of a Protective Cover for Vertical-Axis Wind Turbines (VAWTs): Simulations of Wind Flow

2020 ◽  
Vol 12 (18) ◽  
pp. 7818
Author(s):  
Jose Alberto Moleón Baca ◽  
Antonio Jesús Expósito González ◽  
Candido Gutiérrez Montes
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Wind Turbines ◽  
High Speed ◽  
Experimental Tests ◽  
Weather Conditions ◽  
Vertical Axis ◽  
Good Alternative ◽  
Wind Speeds ◽  
Vertical Axis Wind Turbines

This paper presents a numerical and experimental analysis of the patent of a device to be used in vertical-axis wind turbines (VAWTs) under extreme wind conditions. The device consists of two hemispheres interconnected by a set of conveniently implemented variable section ducts through which the wind circulates to the blades. Furthermore, the design of the cross-section of the ducts allows the control of the wind speed inside the device. These ducts are intended to work as diffusers or nozzles, depending on the needs of the installation site. Simulations were performed for the case of high-speed external wind, for which the ducts act as diffusers to reduce wind speed and maintain a well-functioning internal turbine. Four different patent designs were analyzed, focusing on turbine performance and generated power. The results indicate that the patent allows the generation of electric power for a greater range of wind speeds than with a normal wind turbine. The results support that this patent may be a good alternative for wind power generation in geographic areas with extreme weather conditions or with maintained or strong gusty wind. Experimental tests were carried out on the movement of the blades using the available model. Finally, the power curve of the model of this wind turbine was obtained.

Performance Analysis of Casement Type Vertical Axis Wind Turbine

2013 ◽  
Author(s):  
Sandeep S. Wangikar ◽  
Sharad U. Jagtap ◽  
Abhijeet B. Tarmude ◽  
Abhishek S. Pore ◽  
Sushil P. Shinde
Keyword(s):  
Wind Speed ◽  
Performance Analysis ◽  
Wind Energy ◽  
Wind Turbine ◽  
Control Parameter ◽  
Vertical Axis ◽  
Renewable Energies ◽  
Control Parameters ◽  
Vertical Axis Wind Turbine ◽  
Vertical Axis Wind Turbines

Increasing worldwide demand for electricity requires the need for harnessing different kinds of renewable energies like wind energy. An increase in prevalence of vertical axis wind turbine (VAWT) has renewed interest in developing the new configurations of vertical axis wind turbines for better performance. This paper describes the performance analysis of a casement type vertical axis wind turbine (CTVAWT). The model of CTVAWT has been manufactured and tested to predict the performance. The performance analysis of CTVAWT was carried out by varying the control parameters such as wind speed and casement angle. The effect of each control parameter on the response parameters i.e. torque and power have been analyzed (by conducting various experiments of CTVAWT).The torque and power increases with increase in casement angle up to 40 degrees further decrease with increase in casement angle. From this analysis the newly developed CTVAWT is working efficiently at 40 degrees.

scholarly journals Design and Optimization of Vertical Axis Wind Turbines Using QBlade

2021 ◽  
Vol 4 (4) ◽  
pp. 74
Author(s):  
Amani I. Altmimi ◽  
Mustafa Alaskari ◽  
Oday Ibraheem Abdullah ◽  
Ahmed Alhamadani ◽  
Jenan S. Sherza
Keyword(s):  
Working Conditions ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Vertical Wind ◽  
Vertical Axis Wind Turbine ◽  
Negative Effects ◽  
Design And Optimization ◽  
Vertical Axis Wind Turbines ◽  
And Performance ◽  
Design Factors

Wind energy is considered one of the most important sources of renewable energy in the world, because it contributes to reducing the negative effects on the environment. The most important types of wind turbines are horizontal and vertical axis wind turbines. This work presents the full details of design for vertical axis wind turbine (VAWT) and how to find the optimal values of necessary factors. Additionally, the results shed light on the efficiency and performance of the VAWT under different working conditions. It was taken into consideration the variety of surrounding environmental conditions (such as density and viscosity of fluid, number of elements of the blade, etc.) to simulate the working of vertical wind turbines under different working conditions. Furthermore, the effect of the design factors was investigated such as the number and size of the blades on the behavior and performance of VAWT. It was assumed that the vertical wind blade works in different sites of Iraq. QBlade software (Version 8) was used to achieve the calculations and optimization processes to obtain the optimal design of vertical axis wind turbines that is suitable for the promising sites. The results proved that accurate results can be obtained by using QBlade software.

scholarly journals Study on performance of a savonius wind turbines related with the blade angle

2019 ◽  
Vol 1 (2) ◽  
pp. 32-36
Author(s):  
Saowalak Thongdee ◽  
Churat Tararuk ◽  
Natthawud Dussadee ◽  
Rameshprabu Ramaraj ◽  
Tanate Chaichana
Keyword(s):  
Wind Speed ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Speed Ratio ◽  
Blade Angle ◽  
Tip Speed Ratio ◽  
Vertical Axis Wind Turbines ◽  
Torque Coefficient ◽  
Savonius Wind Turbine ◽  
Positive Effect

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.

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