Changing Facets of Wind Energy

8/2/2019 Changing Facets of Wind Energy

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The Changing Facets ofWind Energy

A

SEMINAR

BY

K Bhanu PratapUNDER THE GUIDANCE

OF

Prof P S Bhambare

DEPARTMENT OF MECHANICAL ENGINEERING

ARMY INSTITUTE OF TECHNOLOGY

DIGHI HILLS, PUNE-4110152004-2005


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WIND

The air at motion is what we callWind

Which in turn is effected by

many factors like:

Global Geography

Local Geography

Man-made Structures


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the influence ofGlobal Geography


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Permanent Wind Belts


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the influence ofLocal Geography


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Localities Near Water Bodies


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Hilly Terrain


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Peaks and Valleys


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The Windiest Sites


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the influence ofMan-made Structures


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Surface Roughness

Surface

Roughness

introduces

turbulence in

winds andeffect their

pattern


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The Vision

The energy stored in winds promised toserve the needs of the civilization

Which led to the development of the earliestof the machines, which date back to 2000 B C

Step by step the human race had reached thepresent stage of development


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The Wind Machines


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The Wind Machines

During the stages of their Metamorphosis avariety of machines evolved

These were classified asHorizontal Axis Machines

Vertical Axis Machines

These could be further classifiedasDrag type

Lift Type


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Horizontal Axis Wind TurbinesHAWTS


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Horizontal Axis Wind Turbines

Drag Type Lift Type


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Component Layout

...the white box view


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Component Layout...the black box view


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Mechanisms and Working

Yaw Control Mechanism : Gear System


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Pitch Control Mechanism


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Flat Rating Curve


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Forces Acting on Rotor


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Flow Pattern


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Off-Shore Wind Farms


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Increasing Rotor Sizes


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Limitations

limited suitable terrain

off-shore installations hazardous for navigation

large blades are cantilever loaded extensive foundations required for each turbine

five megawatt turbines: the limiting possibility

blades are subject to 1/rev fluctuations in loading


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Vertical Axis Wind TurbinesVAWTS


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Vertical Axis Wind Turbines

Drag Type


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Anemometer


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Savonius Rotor


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Vertical Axis Wind Turbines

Lift Type


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Spiral Formed Type(windside model)


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Darrieus

Rotor


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Evans Rotor


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Giromill


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VAWTs for Giga-Watt Power

Under Considerationone-gigawatt power generating station

comprising identical

ten-megawatt vertical-axis wind turbines


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The Bright Future Ahead

the blade-sections pass through a relatively

uniform wind-velocity

subject to minimum fatigue loading.

the blades are catenary loaded

blades are neither twisted nor subjected to

oscillating loads

permitting employment of simple composite

fabrication techniques


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RETScreenTM


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WIND FARM DESIGN

Factors System Characteristics

System Losses

Annual Energy Production

Cost Analysis - Wind Energy Project Feasibility Study

Socio-Economic Factors

Engineering

Renewable Energy (RE) Equipment Balance of Plant

Annual Costs


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Pros and Cons


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Avian Mortality

Visual Impacts

Noise

Shadow Flicker

Interference with Radio Signals


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Promisinga

Better Future


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ThankYou

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Changing Facets of Wind Energy