Performance Analysis of Casement Type Vertical Axis Wind Turbine

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.

Download Full-text

Design and performance evaluation of vertical axis wind turbine for wind energy harvesting at railway

World Journal of Science Technology and Sustainable Development ◽

10.1108/wjstsd-11-2020-0088 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Hashwini Lalchand Thadani ◽

Fadia Dyni Zaaba ◽

Muhammad Raimi Mohammad Shahrizal ◽

Arjun Singh Jaj A. Jaspal Singh Jaj ◽

Yun Ii Go

Keyword(s):

Wind Speed ◽

Energy Harvesting ◽

Wind Energy ◽

Wind Turbine ◽

High Speed ◽

Vertical Axis ◽

Speed Ratio ◽

Vertical Axis Wind Turbine ◽

Modeling Tools ◽

Content Type

PurposeThis paper aims to design an optimum vertical axis wind turbine (VAWT) and assess its techno-economic performance for wind energy harvesting at high-speed railway in Malaysia.Design/methodology/approachThis project adopted AutoCAD and ANSYS modeling tools to design and optimize the blade of the turbine. The site selected has a railway of 30 km with six stops. The vertical turbines are placed 1 m apart from each other considering the optimum tip speed ratio. The power produced and net present value had been analyzed to evaluate its techno-economic viability.FindingsComputational fluid dynamics (CFD) analysis of National Advisory Committee for Aeronautics (NACA) 0020 blade has been carried out. For a turbine with wind speed of 50 m/s and swept area of 8 m2, the power generated is 245 kW. For eight trains that operate for 19 h/day with an interval of 30 min in nonpeak hours and 15 min in peak hours, total energy generated is 66 MWh/day. The average cost saved by the train stations is RM 16.7 mil/year with battery charging capacity of 12 h/day.Originality/valueWind energy harvesting is not commonly used in Malaysia due to its low wind speed ranging from 1.5 to 4.5 m/s. Conventional wind turbine requires a minimum cut-in wind speed of 11 m/s to overcome the inertia and starts generating power. Hence, this paper proposes an optimum design of VAWT to harvest an unconventional untapped wind sources from railway. The research finding complements the alternate energy harvesting technologies which can serve as reference for countries which experienced similar geographic constraints.

Download Full-text

Evaluation of wind energy potential for different regions in Lebanon based on NASA wind speed database

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/926/1/012093 ◽

2021 ◽

Vol 926 (1) ◽

pp. 012093

Author(s):

Y Kassem ◽

H Çamur ◽

M A H A Abdalla ◽

B D Erdem ◽

A M R Al-ani

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Vertical Axis ◽

Small Scale ◽

Renewable Energy Resources ◽

Vertical Axis Wind Turbine ◽

Energy Potential ◽

Horizontal Axis Wind Turbine ◽

Wind Energy Potential

Abstract The grid-connected system can be an attractive solution to reduce electricity consumption, dependence on utility power, and increase electricity generation from renewable energy resources like wind energy for residential electricity users. Based on 33-year wind data (1983-2020), this study investigates the potential of wind energy at different locations ((Akkar, Baalbek, Beirut, Zahlé, Baabda, Nabatieh, Tripoli, and Sidon) in Lebanon using the Weibull distribution function. Monthly NASA wind speed data during the period (1983-2020) were used to estimate the wind energy potential. The result showed that the averaged wind speeds at the selected regions are varied from 3.695m/s to 4.457m/s at the height of 10m. Furthermore, the annual wind power density was estimated at various heights (10m, 30m, and 50m). The results demonstrated that small-scale wind turbines are recommended to be used for generating electricity from wind in the selected regions. Finally, the performance of WRE.060 / 6 kW (vertical axis wind turbine) and Proven WT 6000 (horizontal axis wind turbine) was done based on the monthly NASA wind speed database.

Download Full-text

Experimental Study of Wind Booster Addition for Savonius Vertical Wind Turbine of Two Blades Variations Using Low Wind Speed

E3S Web of Conferences ◽

10.1051/e3sconf/201912514003 ◽

2019 ◽

Vol 125 ◽

pp. 14003

Author(s):

Eflita Yohana ◽

MSK. Tony Suryo U ◽

Binawan Luhung ◽

Mohamad Julian Reza ◽

M Badruz Zaman

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Vertical Axis ◽

Vertical Wind ◽

Speed Ratio ◽

Vertical Axis Wind Turbine ◽

Tip Speed Ratio ◽

Average Value ◽

Low Wind Speed

The Wind turbine is a tool used in Wind Energy Conversion System (WECS). The wind turbine produces electricity by converting wind energy into kinetic energy and spinning to produce electricity. Vertical Axis Wind Turbine (VAWT) is designed to produce electricity from winds at low speeds. Vertical wind turbines have 2 types, they are wind turbine Savonius and Darrieus. This research is to know the effect of addition wind booster to Savonius vertical wind turbine with the variation 2 blades and 3 blades. Calculation the power generated by wind turbine using energy analysis method using the concept of the first law of thermodynamics. The result obtained is the highest value of blade power in Savonius wind turbine without wind booster (16.5 ± 1.9) W at wind speed 7 m/s with a tip speed ratio of 1.00 ± 0.01. While wind turbine Savonius with wind booster has the highest power (26.3 ± 1.6) W when the wind speed of 7 m/s with a tip speed ratio of 1.26 ± 0.01. The average value of vertical wind turbine power increases Savonius after wind booster use of 56%.

Download Full-text

Analysis of the Performance of The Four-Blade Darrieus Wind Turbine at the Jamik Bukit Asam Mosque Complex Tanjung Enim South Sumatra

International Journal of Research in Vocational Studies (IJRVOCAS) ◽

10.53893/ijrvocas.v1i2.52 ◽

2021 ◽

Vol 1 (2) ◽

pp. 45-51

Author(s):

Mustafa Kamal ◽

Fatahul Arifin ◽

Rusdianasari

Keyword(s):

Renewable Energy ◽

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Vertical Axis ◽

Vertical Axis Wind Turbine ◽

Energy Potential ◽

Coffee Shop ◽

Available Energy ◽

Wind Energy Potential

Several types of renewable energy have been developed, such as solar energy, biomass, hydro energy, geothermal, and wind energy. Wind energy is an up-and-coming alternative and renewable energy. Wind energy is more environmentally friendly than available energy sources and has more accessible operational and maintenance costs. Indonesia has a relatively small natural wind energy potential because the wind speed in Indonesia is on average 3-6 m/s due to its location. Geographically, it is located in the equatorial area, especially the Muara Enim area, South Sumatra. This study aims to design a prototype the four-blade darrieus type vertical axis wind turbine (VAWT) needed for the utilization of wind energy which is used for Coffee Shop electricity needs at the Jamik Bukit Asam Tanjung Enim Mosque complex, South Sumatra, with the conclusion that the wind turbine, wind turbine rotation, the magnitude of the output voltage and The current generated significantly affects the wind speed in the area.

Download Full-text

Design of an Offshore Three-Bladed Vertical Axis Wind Turbine for Wind Tunnel Experiments

Volume 10: Ocean Renewable Energy ◽

10.1115/omae2017-61512 ◽

2017 ◽

Author(s):

Sukanta Roy ◽

Hubert Branger ◽

Christopher Luneau ◽

Denis Bourras ◽

Benoit Paillard

Keyword(s):

Wind Tunnel ◽

Wind Energy ◽

Wind Turbine ◽

Vertical Axis ◽

Offshore Wind ◽

Energy Market ◽

Offshore Wind Energy ◽

Vertical Axis Wind Turbine ◽

Wind Tunnel Experiments ◽

Vertical Axis Wind Turbines

The rapid shrinkage of fossil fuel sources and contrary fast-growing energy needs of social, industrial and technological enhancements, necessitate the need of different approaches to exploit the various renewable energy sources. Among the several technological alternatives, wind energy is one of the most emerging prospective because of its renewable, sustainable and environment friendly nature, especially at its offshore locations. The recent growth of the offshore wind energy market has significantly increased the technological importance of the offshore vertical axis wind turbines, both as floating or fixed installations. Particularly, the class of lift-driven vertical axis wind turbines is very promising; however, the existing design and technology is not competent enough to meet the global need of offshore wind energy. In this context, the project AEROPITCH co-investigated by EOLFI, CORETI and IRPHE aims at the development of a robust and sophisticated offshore vertical axis wind turbine, which would bring decisive competitive advantage in the offshore wind energy market. In this paper, simulations have been performed on the various airfoils of NACA 4-series, 5-series and Selig profiles at different chord Reynolds numbers of 60000, 100000 and 140000 using double multiple streamtube model with tip loss correction. Based on the power coefficient, the best suitable airfoil S1046 has been selected for a 3-bladed vertical axis wind turbine. Besides the blade profile, the turbine design parameters such as aspect ratio and solidity ratio have also been investigated by varying the diameter and chord of the blade. Further, a series of wind tunnel experiments will be performed on the developed wind turbine, and the implementation of active pitch control in the developed turbine will be investigated in future research.

Download Full-text

Development of Mixed Vertical Axis Wind Turbine (MVAWT) for Low Wind Condition

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.660.811 ◽

2014 ◽

Vol 660 ◽

pp. 811-815 ◽

Cited By ~ 1

Author(s):

Bih Lii Chua ◽

Mohd Suffian Misaran ◽

Yan Yan Farm ◽

Mizanur Rahman ◽

Benjoe Eldana Barahim

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Pitch Angle ◽

Promising Result ◽

Energy Generation ◽

Vertical Axis ◽

Wind Condition ◽

Start Speed ◽

Vertical Axis Wind Turbine

Small-scaled renewable energy generation such as micro-hydro and domestic solar panel has become the recent trend of research in order to achieve sustainable energy generation and to eliminate the reliance of geographical selection and large farm area. As for the case of wind energy, a wind turbine that can operate at low wind condition are desirable. This paper presents a mixed design for Vertical Axis Wind Turbine comprises of Savonius and Darrieus rotors, being assembled together as a single rotor turbine. The mixed wind turbine model (MVAWT) was fabricated and tested in our lab as prove of concept. Experiments conducted on 5 MVAWT’s configurations and being compared to a standalone Darrieus turbine with +3 degree pitch angle, showed promising result in lowering the self-start speed of the Darrieus turbine. It was observed that all the positive pitch angle MVAWTs has started to rotate at lower wind speed (about 1.8 m/s) while the standalone Darrieus turbine was only started to rotate at wind speeds more than 3.0 m/s. However, the lower self-start were also being compensated by lower turbine rotational speed. With the low self-start speed in the MVAWT, it will enable the wind energy capture for a longer period of time at a low wind condition site. This development should lead to an interesting research on optimizing the mixture of Savonius and Darrieus turbine for a localized low wind speed conditions in the future.

Download Full-text

Decreasing Wear of Large Vertical Axis Wind Turbines by Employing a Multi-Level Turbine Concept

Renewable and Alternative Energy ◽

10.4018/978-1-5225-1671-2.ch032 ◽

2017 ◽

pp. 1015-1028 ◽

Cited By ~ 1

Author(s):

Jan H. Wiśniewski

Keyword(s):

Wind Energy ◽

Wind Turbine ◽

Future Development ◽

Bending Moment ◽

Vertical Axis ◽

Energy Sector ◽

General Knowledge ◽

Vertical Axis Wind Turbine ◽

Vertical Axis Wind Turbines ◽

Multi Level

The chapter focuses on describing the author's own multi-level vertical axis wind turbine concept, putting emphasis on its specific features, the scope of conducted analyses, as well as general knowledge important to wind industry specialists, other people with an interest in wind energy, and engineers aspiring to achieve innovative results without needlessly complicating their design. Current results show a reduction of the maximum bending moment during a rotation at the bottom of a two level turbine of up to 19.7% after optimisation; at the same time an optimised turbine can achieve a reduction of maximum moment jump during a rotation at the bottom of a turbine of up to 73.4%. Further studies are currently being conducted, as both the study presented in this chapter and its continuations might have a definitive influence on the future development of the wind-energy sector.

Download Full-text

Decreasing Wear of Large Vertical Axis Wind Turbines by Employing a Multi-Level Turbine Concept

Advances in Environmental Engineering and Green Technologies - Promoting Sustainable Practices through Energy Engineering and Asset Management ◽

10.4018/978-1-4666-8222-1.ch002 ◽

2015 ◽

pp. 22-34

Author(s):

Jan H. Wiśniewski

Keyword(s):

Wind Energy ◽

Wind Turbine ◽

Future Development ◽

Bending Moment ◽

Vertical Axis ◽

Energy Sector ◽

General Knowledge ◽

Vertical Axis Wind Turbine ◽

Vertical Axis Wind Turbines ◽

Multi Level

Download Full-text

Design and Performance Analysis of Distributed Equal Angle Spiral Vertical Axis Wind Turbine

Recent Patents on Engineering ◽

10.2174/1872212113666191002150551 ◽

2020 ◽

Vol 14 (1) ◽

pp. 120-132

Author(s):

Li Zheng ◽

Zhang Wenda ◽

Han Ruihua ◽

Tian Yongsheng

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Wind Turbines ◽

Vertical Axis ◽

Energy Utilization ◽

Normal Operation ◽

Utilization Rate ◽

Speed Ratio ◽

Vertical Axis Wind Turbine

Background: The wind turbine is divided into a horizontal axis and a vertical axis depending on the relative positions of the rotating shaft and the ground. The advantage of the choke wind turbine is that the starting torque is large and the starting performance is good. The disadvantage is that the rotation resistance is large, the rotation speed is low, the asymmetric flow occurs when the wind wheel rotates, the lateral thrust is generated, and the wind energy utilization rate is lowered. How to improve the wind energy utilization rate of the resistance wind turbine is an important issue to be solved by the wind power technology. Objective: The nautilus isometric spiral wind turbines studied in this paper have been introduced and analyzed in detail, preparing for the further flow analysis and layout of wind turbines, improving the wind energy utilization rate of wind turbines, introducing patents of other structures and output characteristics of its generator set. Methods: Combined with the flow field analysis of ANSYS CFX software, the numerical simulation of the new wind turbine was carried out, and the aerodynamic performance of the new vertical axis wind turbine was analyzed. The mathematical model and control model of the generator were established by the maximum power control method, and the accuracy of the simulation results was verified by the measured data. Results: The basic parameters of the new wind turbine tip speed ratio, torque coefficient and wind energy utilization coefficient are analyzed. Changes in wind speed, pressure and eddy viscosity were investigated. Three-dimensional distribution results of wake parameters such as wind speed and pressure are obtained. By simulating the natural wind speed, the speed and output current of the generator during normal operation are obtained. Conclusion: By analyzing the wind performance and power generation characteristics of the new wind turbine, the feasibility of the new wind turbine is determined, which provides reference and reference for the optimal design and development of the wind turbine structure.

Download Full-text

The strategy of simulation effects of wind speed, variation of turbine blades and it’s interaction to power generated by vertical axis wind turbine using NACA 2412

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i1.2.9314 ◽

2017 ◽

Vol 7 (1.2) ◽

pp. 246

Author(s):

Bambang Sugiyono Agus Purwono ◽

Masroni . ◽

Awan Setiawan ◽

Tundung Subali Patma ◽

Ida Bagus Suardika

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Wind Turbine ◽

Turbine Blade ◽

Turbine Blades ◽

Clean Energy ◽

Vertical Axis ◽

Vertical Axis Wind Turbine ◽

Power Capacity ◽

Speed Variation

The objective of this paper is to simulate the effects upon the wind speed, variation of turbine blades and interaction of wind speed and variation of turbine blades to the power capacity generated by Vertical Axis Wind Turbine (VAWT) using NACA 2412 and to stratify the power capacity generated by the VAWT simulation. The research backgrounds are the wind-energy potential in Indonesia is about 9.290 MW and has already elaborated by Ministry of Mining, and Energy Resources is about 50 MW. This wind energy is environmentally (clean energy), economically (cheapest), easy to operate and easy to maintain, also renewable energy. The method of analysis is quantitative approach using two way classification (analysis of variance or design of experiments). The research variables are wind speed, variation of turbine blades and this interaction among independent variables and the power capacity as dependent variables. Data wind speed simulation vary from 3 m/s till 6 m/s. The quantity of turbine blades vary from 3 till 8 units. The finding from this research is accepted the null hypothesis or not differ significantly at 5% from each independent variable. The scenario and the parameters during the strategy development use turbine blades, wind speed and power generated by VAWT and the maximum power generated is 16.38 watt. The wind speed is 6 m/s and the number of turbine blade is 4 units. However, the minimum power generated by VAWT is 0.45 watt, the wind speed is 6 m/s and the number of turbine blade is 3 units.

Download Full-text