design of a vertical-axis wind turbine
DESCRIPTION
Design of a Vertical-Axis Wind Turbine. MUN VAWT DESIGN. Group 11 Jonathan Clarke Luke Hancox Daniel MacKenzie Matthew Whelan. INTRODUCTION. For many remote communities, electrical power is provided by diesel generators Wind power is a viable option to offset the cost of fuel - PowerPoint PPT PresentationTRANSCRIPT
Design of a Vertical-Axis Wind TurbineMUN VAWT DESIGN
Group 11Jonathan ClarkeLuke HancoxDaniel MacKenzieMatthew Whelan
INTRODUCTION For many remote communities,
electrical power is provided by diesel generators
Wind power is a viable option to offset the cost of fuel
Our goal is to design a vertical-axis wind turbine specifically for operation in remote communities in Newfoundland and Labrador
Image Credits: The Telegram
PROJECT GOALS Work in conjunction with diesel generators
Simple design to reduce manufacturing costs and maintenance issues
Sized to provide required energy with the ability to be shipped to remote/isolated areas
Able to account for variable wind conditions in the target area
Design will focus on aerodynamic and structural analysis
BENEFITS OF A VERTICAL AXIS DESIGN
Heavy drivetrain components are located at the base Easier to maintain
They operate from winds in any direction No yaw system required
Generate less noise than horizontal-axis turbines
The characteristics of VAWT designs make them favourable for offshore environments
WEATHER DATA Hourly wind speed data in the target area was collected from
Environment Canada Period from September 2012 to September 2013 Average wind speed is around 18 km/h, or 5 m/s
Records of maximum wind gust intensity and duration were also available Maximum gust speed was 120 km/h, or 34 m/s
SAMPLE WIND DATA
Season Year Winter Spring Summer FallAverage Speed (m/s) 5.24 5.89 4.79 4.31 5.98Median Speed (m/s) 4.17 5.28 4.17 3.61 5.28
Maximum Speed (m/s) 27.22 27.22 20.56 17.50 24.17
WIND SPEED STATISTICS
VAWT SIZING Average power consumption in Newfoundland and Labrador
homes in January is 3.8kW (according to Statistics Canada)
100kW will provide enough energy for ~25 homes
Turbine parts should be able to be shipped via aircraft or boat
Nameplate capacity of a turbine is usually the maximum it will generate Different wind conditions lead to different generation rates
STATE-OF-THE-ART VAWT Types
Airfoils NACA 0018
DU 06-W-200
STATE-OF-THE-ART Number of Blades
Solidity Measurement of blade area over rotor area
Concentrator
VAWT CONFIGURATIONS Two main configurations: Savonius and Darrieus Savonius is drag driven
High torque, low speed
Darrieus is lift driven
High speed, high efficiency
DARRIUS CONFIGURATIONS
Source: A Retrospective of VAWT technology (2012), H. Sutherland et. al
PRELIMINARY DESIGN Based on preliminary research, the general configuration of the
turbine design was selected
Source: Determination of Vertical Axis Wind Turbine Configuration through CFD SimulationsP. Sabaeifard et. al
Criteria Optimal Choice AlternativesConfiguration H-Rotor Darrieus Full Darrieus, V-Rotor Darrieus, Savonius# of Blades 3 2 to 5Airfoil DU 06-W-200 NACA-Series AirfoilsSolidity 0.35 0.15 to 0.5
PRELIMINARY DESIGN A “H-Darrieus” configuration combines the high efficiency of a
Darrieus turbine with the simplicity of the “H” configuration
A 3-bladed design increases rotor stability, eliminates symmetrical loading and reduces torque ripple in the drive train
Based on research findings, a DU 06-W-200 airfoil and a solidity of 0.35 should be selected
NEXT STEPS First phase of the project is complete
Preliminary research and concept selection
Second phase will be from February 7th to March 7th
Preliminary aerodynamic modelling and structural design Selection of generator and ancillary components
Third phase will be from March 7th to April 4th
Detailed aerodynamic modelling and final design of structure Economic analysis Prototype construction if time permits Final deliverable will be a detailed aerodynamic model
MUN VAWT DESIGNENGI 8926 Mechanical Design Project II
QUESTIONS?
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