Upload
cetn
View
29
Download
4
Embed Size (px)
Citation preview
11
Welcome to the world of wind energy
Environment+ wind=?
Dr. D. V. KanellopoulosOPWP Renewable Energy
Training Program11-14 December 2016
Muscat, Oman
Hr
Question: Is wind energy good for the environment?
Mankind and the use of wind energy, a long-long historic friendship
Traditional wind mill of the Aegean Sea.
Karpathos island,
Elymbos, summer 2005
Thousands of small wind mills were used for irrigation in the Lassithi plateau in Crete, Greece
OLD DUTCH WINDMILLS
Spanish wind mills, a tourist attraction
France, Marseille, 17th century wind mills in 2 rows within the city walls!
Boulgaria, Windmill on the causeway to old town of Nessebar
A windmill at Konnevesi Museum in Konnevesi, Finland
The technology today changes the landscape. The wts are getting larger, Austria, E-82
Comparing sizes with international monuments
The statue of Liberty, USA
Big Ben, UK
Comparing a 3 MW wind turbine with international monuments
The WHITE TOWER of Thessaloniki, Greece h= 34 m
Environmental impact no 1, Visual?
Environmental impact no 1, Visual?
USA, the 80’s
Europe the 80’s
Small number , single lines
large number , multiple lines
Environmental impact no 1, Visual?
E126-7.6
Environmental impact no 1, Visual?
Texas USA
Environmental impact no 1, Visual?
The Netherlands, 20 *E126
New HV SS
Environmental impact no 2, Noise?
Mechanical, gearbox-generator
Aerodynamic, from the blades
We can measure it, we can predict it.
At distances of 300 m from the turbine it drops to 40-45 dB(A)
Modern onshore WTs, they are quiet
machines
An example of the sound pressure level estimations from a 6 wts wind farm
Pubnico Point, Nova Scotia, Canada, 17*1.8 MW turbines
MOE=Ontario Ministry of Environment, criteria for wind turbines
Pubnico Point, Nova Scotia, Canada Predicted sound levels, at V=10 m/s
Pubnico Point, Nova Scotia, Canada, 17*1.8 MW turbines
Colours:Green= V(m/s) at wt14Blue= wind speed at met towerred=10 min aver. Sound levelGray=MOE criteria
Sound pressure level measurements , dB(A)
time
Turbine noise levels at wind speeds of 8 and 10 m/sD
ista
nce
from
wt i
n m
There is no noise problems and there are no dangers to human health from onshore
machines following the IEC 61400 STANDARD
Environmental impact no 3, Ecosystem?
Migratory bird paths in
Greece
Environmental impact no 3, Ecosystem?
Five zones used for analyses of the time series fro bird migration at Anholt
OWF
Radar observations
Radar can identify incoming bird flocks and stop the operation of a wind farm if needed
Environmental impact no 3, Ecosystem?
The Tehachapi Wind Farm, with around 4,731 wind turbines, is the second largest collection of wind generators in California
http://focusingonwildlife.com/news/migrating-raptors-on-the-strait-of-gibraltar/
19.10.2013
Environmental impact no 3, Ecosystem?
STUDY MAPS WHERE TO BUILD WIND FARMS TO SAVE GOLDEN EAGLES
http://www.biosphereonline.com/2015/08/28/study-maps-where-to-build-wind-farms-to-save-golden-eagles/
The new study, from , is trying to take a preemptive approach to this problem. Researchers investigated the areas in which golden eagles are nesting, and included other information like prey availability, land use and habitat quality. They then recorded which areas would simultaneously be good sources for wind power.Putting all of these areas together yielded a map for the area in Wyoming, which has the second highest golden eagle population in the United States. The map highlights the best places for wind farm development, whilst conserving the Federally protected eagles (highlighted in blue). The green areas show the best places for golden eagle nests, and thankfully – no wind farms are situated within these. However, the orange and yellow areas highlights ‘moderate risk’ sites that have less than ideal winds, but plenty of golden eagles – and there are many turbines located in these areas.
Wyoming, second highest golden eagle population in the United States
Landscapes for Energy and Wildlife: Conservation Prioritization for Golden Eagles across Large Spatial Scales , Jason D. Tack ,Bradley C. Fedy
•Published: August 11, 2015•http://dx.doi.org/10.1371/journal.pone.0134781
Useful information about wind
farms
Work begins in Sandy, Bedfordshire on Monday 25 January 2016, and the 0.8 MW wind turbine will generate around two million units of green energy every year, equivalent to over half of the electricity the RSPB uses across its 127 UK locations.
Martin Harper, RSPB’s director of conservation, said: “Climate change is the single biggest threat to our planet. This is about our birds and wildlife as well as our way of life. Around the world, and even in the UK, we can already see how these changes are affecting wildlife, the places where they live as well as damage to our homes and disruptions to the economy.It is down to everyone to play their part. In the UK, we have the potential to generate a significant portion, if not all, of our electricity from sustainable sources. This will take time and it will take investment. So I am proud to say the RSPB continues to back words with actions to show we are serious about tackling the threat of climate change with our biggest single renewable energy project yet.”
Austria, E70
Environmental impact no 5, Shadow flicker?
Environmental impact no 5, Shadow flicker?
Wind turbine shadow flicker areas can
easily be computed
Software tools usually combine noise and shadow flicker calculations
www.cres.gr10 MW wind farm provides:Electricity for 10.000 families yearlySavings amounting to 2.447 t dieselAvoidance of 28.450 t CO2 yearlyDuring planning and constriction faces, it requires 130 people.
Environmental benefits of wind energy
Social acceptability of wind energy. Enemy or Friend?
People will always ask: what is the future wind project looks like?
A photomontage done using Google tools for a new project in Crete
Environmental Impact Assessment studies (EIAs) are required for all projects. Visualization of the wind farm is absolutely necessary.
e.g. of 3 scenarios
80 wts, 5MW
View points are defined and photomontages are performed. In the white box on the bottom picture, the farm is hardly visible!
View point: from the harbor toward the future wind farm
People were invited to see the erection of a wt in Wales, UK
Uruguay, E92
USA Livestock and farming continues uninterrupted with minimal use of land
Engage society in an open and honest dialogue
Canada, E82 and E70 wts blend in the mountainous landscape
France, more than sunflowers are growing in the fields!
Martigny Switzerland, a 3 MW wt
As a society, we have enjoyed the benefits of wind energy in the past. As responsible citizens of planet earth,
we should do the same in the future.