scholarly journals Harvesting energy along muscat expressway using vertical axis wind turbine

2020 ◽  
Author(s):  
Hamza Rumman ◽  
Fiseha Mekonnen Guangul
Keyword(s):  
Wind Turbine ◽  
Fossil Fuels ◽  
Electric Energy ◽  
Geographic Location ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
Wind Speeds ◽  
Wind Turbulence ◽  
Continuous Use

The continuous use of fossil fuels as energy source has depleted their level, and if used by the same rate, these forms of energy sources are going to become extinct in a few hundred years. In addition, the emissions generated from the usage of these fuels are adversely affecting the environment. Hence, governments has been forced to find other non-conventional forms of energy, which can be used sustainably. Due to its geographic location, Oman has a very high potential for renewable energies like solar and wind. Oman receives moderate wind speeds both offshore and onshore. On highways, the wind turbulence caused by fast moving cars would add up to the energy that can be obtained from the natural wind. This study focuses on harvesting of electric energy from the highway wind turbulence along with the normal wind breeze, and converting it into useful electrical energy. A comparative study was done between different types of wind turbines. Based on this study, a Savonius-type Vertical Axis Wind Turbine was selected to study and determine the amount of energy that can be generated along Muscat Expressway from the wind energy. The optimum location for the implementation of the designed VAWT was found out to be in the middle of the highways. The total electricity which can be generated was estimated to be around 1.063 kWh in one day using a single VAWT. It was found that the harvested electricity could be used to power the street lights on the highways if multiple VAWTs would be installed at regular intervals.

scholarly journals Prototype Hybrid Power Plant of Solar Panel and Vertical Wind Turbine as a Provider of Alternative Electrical Energy at Kenjeran Beach Surabaya

2020 ◽  
Vol 2 (3) ◽  
pp. 108-113
Author(s):  
Anggara Trisna Nugraha ◽  
Dadang Priyambodo
Keyword(s):  
Solar Energy ◽  
Wind Energy ◽  
Wind Turbine ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Solar Panel ◽  
Vertical Axis Wind Turbine ◽  
Energy Potential ◽  
Tropical Country ◽  
Wind Speeds

Indonesia, which is a tropical country, has a very large potential for solar energy because of its area that stretches across the equator, with a radiation magnitude of 4.80 kWh / m2 / day or equivalent to 112,000 GWp. On the other hand, the earth receives solar power of 1.74 x 1017 W / hour and about 1-2% of it is converted into wind energy. However, from the total energy potential, Indonesia has only utilized around 10 MWp for solar energy and not much different, wind energy, whose utilization is planned to reach 250 MW in 2025, has only been utilized around 1 MW of the total existing potential. With this potential, to be able to supply additional power and help save energy for existing facilities in the building, a Prototype of Solar Panel Hybird and Vertical Axis Wind Turbine was created. The design of this prototype is a combination of savonious type turbines and solar panels, where the use of this type of turbine is because it can rotate at low wind speeds (low wind velocity) and its construction is very simple.

Momentum Analytical Model of a Circulation Controlled Vertical Axis Wind Turbine

2009 ◽  
Author(s):  
Jay P. Wilhelm ◽  
Chad Panther ◽  
Franz A. Pertl ◽  
James E. Smith
Keyword(s):  
Wind Turbine ◽  
Analytical Model ◽  
Vertical Axis ◽  
Power Production ◽  
Circulation Control ◽  
Vertical Axis Wind Turbine ◽  
Trailing Edge ◽  
Operating Range ◽  
Wind Speeds ◽  
Stream Tubes

A possible method for analytically modeling a CC-VAWT (Circulation Controlled Vertical Axis Wind Turbine) is the momentum model, based upon the conservation of momentum principal. This model can consist of a single or multiple stream tubes and/or upwind and downwind partitions. A large number of stream tubes and the addition of the partition can increase the accuracy of the model predictions. The CC-VAWT blade has blowing slots located on the top and bottom trailing edges and have the capability to be site controlled in multiple sections along the span of the blade. The turbine blade, augmented to include circulation control capabilities, replaces the sharp trailing edge of a standard airfoil with a rounded surface located adjacent to the blowing slots. Circulation control (CC), along with a rounded trailing edge, induces the Coanda effect, entraining the flow field near the blowing slots thus preventing or delaying separation. Ultimately, circulation control adds momentum due to the mass flow of air coming out of the blowing slots, but is negligible compared to the momentum of the free stream air passing through the area of the turbine. In order to design for a broader range of operating speeds that will take advantage of circulation control, an analytical model of a CC-VAWT is helpful. The analytical modeling of a CC-VAWT could provide insight into the range of operational speeds in which circulation control is beneficial. The ultimate goal is to increase the range of operating speeds where the turbine produces power. Improvements to low-speed power production and the elimination or reduction of startup assistance could be possible with these modifications. Vertical axis wind turbines are typically rated at a particular ratio of rotational to wind speed operating range. In reality, however, wind speeds are variant and stray from the operating range causing the power production of a wind turbine to suffer. These turbines, unless designed specifically for low speed operation, may require rotational startup assistance. The added lift due to circulation control at low wind speeds, under certain design conditions, will allow the CC-VAWT to produce more power than a conventional VAWT of the same size. Circulation control methods, such as using blowing slots on the trailing edge are modeled as they are applied to a VAWT blade. A preliminary CC-VAWT was modeled using a standard NACA 0018 airfoil, modified to include blowing slots and a rounded trailing edge. This paper describes an analytical momentum model that can be used to predict the preliminary performance of a CC-VAWT.

scholarly journals Design and Simulation of Vertical Axis Wind Turbine with Naca 0021 Rotor Angle

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Dieniar N Ramadhani
Keyword(s):  
Wind Energy ◽  
Wind Turbine ◽  
Fossil Fuels ◽  
Vertical Axis ◽  
Turbine Rotor ◽  
Rotor Blades ◽  
Vertical Axis Wind Turbine ◽  
Energy Needs ◽  
Wind Potential ◽  
Wind Turbine Rotor

Much human energy needs are obtained from fossil fuels. This fossil energy is decreasing day by day. So that the utilization of natural energy such as solar energy, water energy and wind energy is being developed. Wind energy is energy that we can find, so it is very easy to use by using a turbine as the driving force. The vertical axis wind turbine is a type of wind turbine that is easier to apply in places where wind potential is not too large. This research was conducted by means of simulation using Qblade v0.963 software by comparing the influence generated from several numbers of wind turbine rotor blades. From the simulation process, it is known that the wind turbine rotor blades with 4 blades are the wind turbines capable of producing the greatest power, which is 75 Watts at a low TSR. So that in the manufacturing process it does not require large costs, but it still has to be built rigid and solidly.

scholarly journals PENGARUH JUMLAH BLADE DAN VARIASI PANJANG CHORD TERHADAP PERFORMANSI TURBIN ANGIN SUMBU HORIZONTAL (TASH)

2014 ◽  
Vol 4 (2) ◽  
Author(s):  
I Kade Wiratama ◽  
Made Mara ◽  
L. Edsona Furqan Prina
Keyword(s):  
Wind Turbine ◽  
Energy Use ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Energy System ◽  
Horizontal Axis ◽  
Power Coefficient ◽  
Speed Ratio ◽  
Vertical Axis Wind Turbine ◽  
Horizontal Axis Wind Turbine

The willingness of electrical energy is one energy system has a very important role in the economic development of a country's survival. As one energy source (wind) can be converted into electrical energy with the use of a horizontal axis wind turbine. Wind Energy Conversion Systems (WECS) that we know are two wind turbines in general, ie the horizontal axis wind turbine and vertical axis wind turbine is one type of renewable energy use wind as an energy generator. The purpose of this study was to determine the effect of the number of blade and the radius chord of rotation (n), Torque (T), Turbine Power (P), Power Coefficient (CP) and Tip Speed Ratio (λ) generated by the horizontal axis wind turbine with form linear taper. The results show that by at the maximum radius of the chord R3 the number blade 4 is at rotation = 302.700 rpm, Pturbine = 7.765 watt, Torque = 0.245 Nm, λ = 3.168 and Cp = 0.403 or 40.3%.

Research on Matching Characteristics of Wind Turbine and Generator for Small H-shaped Vertical Axis Wind Turbine

2021 ◽  
Author(s):  
Yong-Chao Xie ◽  
Jin-Yan Shi
Keyword(s):  
Wind Turbine ◽  
Characteristic Curve ◽  
Vertical Axis ◽  
Turbine Rotor ◽  
Vertical Axis Wind Turbine ◽  
Aerodynamic Parameter ◽  
Wind Speeds ◽  
Wheel Model ◽  
Grid Division ◽  
Wind Turbine Rotor

Based on the small H-shaped vertical axis wind wheel model (NACA0016), a CFD wind wheel model was constructed. Based on the principle of moving grid, the grid division of the CFD wind wheel model is completed by using GAMBIT software, and the boundary conditions such as the inlet boundary and the outlet boundary are set reasonably. Then, the turbulence model and the couple algorithm are used to carry out transient simulation calculations, and finally the aerodynamic parameter curves of the two-dimensional CFD wind wheel model are obtained. Based on this, the matching characteristics of the wind turbine and generator of the small H-shaped vertical axis wind turbine are studied. The research results show as follows: when the incoming wind speeds change in range of (2 m/s, 12 m/s), and the power characteristic curve and torque characteristic curve of the generator wind wheel are respectively overlap the best power curve and best torque of the generator, the matching characteristics of the small H-shaped vertical axis wind turbine rotor and generator are optimal, which provides reference for carrying out related research.

On the Design of a Vertical Axis Wind Turbine for Use in Rural Communities

2009 ◽  
Author(s):  
Allison Johnston ◽  
Jesse French ◽  
John Henshaw
Keyword(s):  
Rural Communities ◽  
Wind Turbine ◽  
Vertical Axis ◽  
Water Pump ◽  
Direct Drive ◽  
Vertical Axis Wind Turbine ◽  
Wind Speeds ◽  
Design Specifications ◽  
North East ◽  
High Winds

The paper describes the design specifications for a hand built wind turbine that is optimally used in regions such as North East China. The authors have developed a design for a home sized wind turbine. A region with some of the highest wind speeds in the world, North East Jilin is an ideal site for vertical axis wind power. Because of its ability to generate power best in high winds, a Darrieus-type turbine is the modified and tested design. Since it is low to the ground, it can be raised and lowered for maintenance and repair without need of expensive equipment or cranes. The design employs a direct drive shaft that can attach to a water pump, an air compressor, or a car alternator. In this way the owner of the turbine can pump water, compress air, or generate electricity depending on personal need. The turbine was designed considering probable implementation locations, and therefore all materials and fabrication techniques are easily accessible by the rural Chinese. The turbine was constructed and raised, and testing was begun.

Design of a Vertical-Axis Wind Turbine Test Facility

2009 ◽  
Author(s):  
Jonathan Kweder ◽  
Patrick Wildfire ◽  
Christina Yarborough ◽  
James E. Smith
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Structural Testing ◽  
Test Facility ◽  
Vertical Axis Wind Turbine ◽  
Freestream Velocity ◽  
Temperature Changes ◽  
Wind Speeds ◽  
Physical Simulations ◽  
World Environment

Physical simulations of fatigue and wear of a vertical axis wind turbine (VAWT) are extremely complex and difficult to evaluate both analytically and numerically. The primary difficulty is simulating the fatigue at the point that the airfoil attaches to the wind turbine structure. Physical testing of VAWT models would provide a simpler method of analyzing the dynamics of a prototype. However, accurate reproduction of the aerodynamic loading imposed on a VAWT body due to the rotational wake is difficult to replicate. To truly incorporate a real world environment, the test facility needs to be exposed to a random, but measurable environment. This leads to the design and development of an outdoor wind turbine test facility. This proposed test facility will consist of an outdoor structure equipped with a 350 horsepower electric motor to turn an 88 inch diameter propeller which will drive the wind turbine model at specific rotational speeds. The propeller will be able to simulate wind speeds over the entire spectrum of 0 to 75 feet per second. The aerodynamic control of the freestream velocity and in turn, the model, will provide an accurate representation of the aerodynamic loadings experienced by the wind turbines tested. In addition to structural testing, this facility will introduce measurable environmental effects, such as wind gusts, pressure variation, and temperature changes to the model in order to create an accurate setting under which the model can be studied.

scholarly journals Development of Flapping Panel Vertical Axis Wind Turbine

2019 ◽  
Vol 9 (1) ◽  
pp. 2119-2122
Keyword(s):  
Power Generation ◽  
Wind Turbine ◽  
Power Output ◽  
Renewable Energy Sources ◽  
Electrical Energy ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
Considerable Part ◽  
Ansys Fluent ◽  
Generation Capacity

In a developing nation like India, electricity has become one of the most important basic needs nowadays. Coal and gasoline based power generation capacity stands at 71% in India, which contributes to a considerable part of air pollution. There are various renewable energy sources which are pollution free, one among them is the wind energy. So the main objective of the project is to facilitate pollution free power generation for individual purpose. In order to understand the problem and working, a flapping panel vertical axis wind turbine was designed. The main advantage of using a vertical axis wind turbine is that it need not pointed towards the wind and also vertical axis wind turbine is more comfortable to erect for domestic purposes. The flapping panel wind turbine is designed using solidworks software and analysed using Ansys Fluent. By making use of the wind, the flapping panels attached to the shaft rotate and the rotor is connected to the permanent magnet electricity generator (PMG). The PMG converts the Kinetic energy of the rotor shaft into electrical energy. The PMG we have used has the capacity of producing maximum power at 1200rpm. On calculating theoretically, the power output is found to be 8W for the rotation of 76.39 rpm and for 1200rpm the power output is calculated to be 125W. The entire wind turbine setup is compact in size and can be easily mounted and erected.

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