Verticale windturbines kan de toekomst zijn bij grote windparken?

[Micele]

Vertical turbines could be the future for wind farms



Monday, 26 April 2021

The now-familiar sight of traditional propeller wind turbines could be replaced in the future with wind farms containing more compact and efficient vertical turbines.

New research from Oxford Brookes University has found that the vertical turbine design is far more efficient than traditional turbines in large scale wind farms, and when set in pairs the vertical turbines increase each other’s performance by up to 15%.

A research team from the School of Engineering, Computing and Mathematics (ECM) at Oxford Brookes led by Professor Iakovos Tzanakis conducted an in-depth study using more than 11,500 hours of computer simulation to show that wind farms can perform more efficiently by substituting the traditional propeller type Horizontal Axis Wind Turbines (HAWTs), for compact Vertical Axis Wind Turbines (VAWTs).

Vertical turbines are more efficient than traditional windmill turbines

The research demonstrates for the first time at a realistic scale, the potential of large scale VAWTs to outcompete current HAWT wind farm turbines.

VAWTs spin around an axis vertical to the ground, and they exhibit the opposite behaviour of the well-known propeller design (HAWTs). The research found that VAWTs increase each other’s performance when arranged in grid formations. Positioning wind turbines to maximise outputs is critical to the design of wind farms.

Professor Tzanakis comments “This study evidences that the future of wind farms should be vertical. Vertical axis wind farm turbines can be designed to be much closer together, increasing their efficiency and ultimately lowering the prices of electricity. In the long run, VAWTs can help accelerate the green transition of our energy systems, so that more clean and sustainable energy comes from renewable sources.”

With the UK’s wind energy capacity expected to almost double by 2030, the findings are a stepping stone towards designing more efficient wind farms, understanding large scale wind energy harvesting techniques and ultimately improving the renewable energy technology to more quickly replace fossil fuels as sources of energy.

Cost effective way to meet wind power targets

According to the Global Wind Report 2021, the world needs to be installing wind power three times faster over the next decade, in order to meet net zero targets and avoid the worst impacts of climate change.

Lead author of the report and Bachelor of Engineering graduate Joachim Toftegaard Hansen commented: “Modern wind farms are one of the most efficient ways to generate green energy, however, they have one major flaw: as the wind approaches the front row of turbines, turbulence will be generated downstream. The turbulence is detrimental to the performance of the subsequent rows.

“In other words, the front row will convert about half the kinetic energy of the wind into electricity, whereas for the back row, that number is down to 25-30%. Each turbine costs more than £2 million/MW. As an engineer, it naturally occurred to me that there must be a more cost-effective way.”

The study is the first to comprehensively analyse many aspects of wind turbine performance, with regards to array angle, direction of rotation, turbine spacing, and number of rotors. It is also the first research to investigate whether the performance improvements hold true for three VAWT turbines set in a series.

Dr Mahak co-author of the article and Senior Lecturer in ECM comments: “The importance of using computational methods in understanding flow physics can’t be underestimated. These types of design and enhancement studies are a fraction of the cost compared to the huge experimental test facilities. This is particularly important at the initial design phase and is extremely useful for the industries trying to achieve maximum design efficiency and power output.”

https://www.brookes.ac.uk/about-broo...or-wind-farms/

[maddox]

Uitgezonderd een link zie ik weinig eigen inbreng.

Mijn idee is dat we moeten stoppen met leuteren, en windmolens, zonnepanelen en opslagcapaciteit bouwen alsof het morgen niet meer kan. Nu is het nog "betaalbaar". Net omdat we nog energie in overschot hebben, maar dat blijft niet duren.

[De schoofzak]

Oorspronkelijk geplaatst door maddox

Uitgezonderd een link zie ik weinig eigen inbreng.

Mijn idee is dat we moeten stoppen met leuteren, en windmolens, zonnepanelen en opslagcapaciteit bouwen alsof het morgen niet meer kan. Nu is het nog "betaalbaar". Net omdat we nog energie in overschot hebben, maar dat blijft niet duren.

Ik ga een eind met je mee.
Ik vind dat we zoveel als mogelijk "proper" moeten leven: geen vuil, geen afval veroorzaken, of toch zo weinig als mogelijk.

[maddox]

Oorspronkelijk geplaatst door De schoofzak

Ik ga een eind met je mee.
Ik vind dat we zoveel als mogelijk "proper" moeten leven: geen vuil, geen afval veroorzaken, of toch zo weinig als mogelijk.

Hoe stel je jezelf dat voor, zo min mogelijk afval veroorzaken?

Een Noord Koreaans dieet is een goeie start eigenlijk.
Weinig transport van voedsel, en weinig afvalwater te verwerken.

[Micele]

Windturbinebladen zijn nu recyclebaar:

https://electrek.co/2021/05/17/wind-...urbine-blades/

Wind giant Vestas says it can now fully recycle turbine blades

Michelle Lewis - May. 17th 2021

Danish wind turbine giant Vestas has announced today that it, along with a coalition of industry and academic leaders, has figured out how to fully recycle wind turbine blades.

Fully recycling wind turbine blades

As Electrek previously reported at the end of April, the University of Strathclyde in Glasgow and Norwegian offshore wind developer Aker Offshore Wind worked out how to recycle glass-reinforced polymer composites (GRP) used in wind turbine blades.

Strathclyde’s Department of Mechanical and Aerospace Engineering developed a solution for thermal recovery and post-treatment process of glass fibers from GRP composites scrap to achieve near-virgin-quality glass fibers.

Now Vestas, along with Olin, an epoxy producer, the Danish Technological Institute, and Aarhus University in Denmark claims to have achieved a full recycling cycle of turbine blades by splitting and recycling both fiber and epoxy:

A coalition of industry and academic leaders have developed a new technology to enable circularity for thermoset composites, the material used to make wind turbine blades. The new technology delivers the final technological step on the journey toward a fully recyclable wind turbine value chain. To enable the adoption of this new technology, and to advance a circular economy across the wind industry, a new initiative entitled CETEC (Circular Economy for Thermosets Epoxy Composites) has been established. Within three years, CETEC is aiming to present a fully scoped solution ready for industrial adoption, based on commercialization of the novel circularity technology.

Here’s how the two-step process works. First, thermoset composites are split into fiber and epoxy. Second, the epoxy is further broken up into base components similar to virgin materials using a chemcycling process. These materials can then be reused in new turbine blades. The cycle is illustrated below:



Simon Frølich, PhD, team manager at the Danish Technological Institute, said:

The key characteristic of composite materials is their unique combination of low weight and high strength. This is governed by the strong bonding of two different materials – fiber and epoxy. The dilemma is that this strong bond is also the feature that renders these materials difficult to recycle. Therefore, the development of CETEC’s novel technology, enabling disassembly of the composite at end-of-life, is a gamechanger, that will allow us to capture the value represented by each material stream in a new circular value chain.

The technology also has the potential to be used for components of airplanes and cars.

[Vlad]

De zandbanken voor de Belgische kust staan reeds vol. Maar geen nood, er ligt beschermd natuurgebied waar nog plaats is. Groen! zijn we al lang niet meer ...

[Micele]

Oorspronkelijk geplaatst door Vlad

De zandbanken voor de Belgische kust staan reeds vol. Maar geen nood, er ligt beschermd natuurgebied waar nog plaats is. Groen! zijn we al lang niet meer ...

De Noordzee is alvast groter.

De capaciteit voor onze kust gaat tegen 2030 verdubbelen volgens Minister van de Noordzee Vincent Van Quickenborne (Open VLD).

Veel meer via: https://debliedemaker.wordpress.com/...voor-de-panne/




Hoe gaat Nederland het klaarspelen?

[Vlad]

Oorspronkelijk geplaatst door Micele

De Noordzee is alvast groter.

De capaciteit voor onze kust gaat tegen 2030 verdubbelen volgens Minister van de Noordzee Vincent Van Quickenborne (Open VLD).

Veel meer via: https://debliedemaker.wordpress.com/...voor-de-panne/




Hoe gaat Nederland het klaarspelen?

Ik weet niet of je de links die je geeft hebt gelezen maar ook daarin staat dat die nieuwe windenergiezone grotendeels in beschermd natuurgebied ligt.

[Vlad]

Ondertussen in China en Rusland ...

[Micele]

Oorspronkelijk geplaatst door Vlad

Ik weet niet of je de links die je geeft hebt gelezen maar ook daarin staat dat die nieuwe windenergiezone grotendeels in beschermd natuurgebied ligt.

En op die tekening (in het groen) te zien zal dat blijkbaar gecompenseerd worden door een zandbank dat nu echt beschermd natuurgebied wordt.

Vlakte van de Raan

[Micele]

Oorspronkelijk geplaatst door Vlad

Ondertussen in China en Rusland ...

Verlinking werkt niet.

China bouwt veel meer als nieuwe kernreactoren (*kernenergie is voorlopig verwaarloosbaar, duidelijk minder dan wind an sich)

Ze zijn wereldwijd nummer 1 qua bouwen aan meer capaciteit hernieuwbare energie. Met grote afstand.

Electricity production (GWh) in China by source, 2008-2020
2020
Total: 7,623,600
Total Fossil: 5,174,300[21] Coal Oil Gas

Nuclear 366,200

Hydro | Wind |Solar (..- - - )
1,355,200 | 466,500 | 261,100 (..- - - )
Total renewable: 2,082,800[22]
% renewable: 27.32%

https://en.wikipedia.org/wiki/Renewable_energy_in_China

Bekijk vooral de evolutie van wind+zon tov van nucleair na 12 jaar.

[Vlad]

Oorspronkelijk geplaatst door Micele

Verlinking werkt niet.

China bouwt veel meer als nieuwe kernreactoren (*kernenergie is voorlopig verwaarloosbaar, duidelijk minder dan wind an sich)

Ze zijn wereldwijd nummer 1 qua bouwen aan meer capaciteit hernieuwbare energie. Met grote afstand.


Bekijk vooral de evolutie van wind+zon tov van nucleair na 12 jaar.

Sorry had de titel ipv de url gekopieerd: Link

[Micele]

Oorspronkelijk geplaatst door Vlad

Sorry had de titel ipv de url gekopieerd: Link

Uw link zegt:

Ondertussen ligt in Europa de ontwikkeling van kernenergieprojecten al decennialang plat.

Dat kan men ff checken...

... deze recente links geven toch een heel ander beeld van Europa:

https://www.world-nuclear.org/inform...worldwide.aspx

Plans For New Reactors Worldwide (Updated May 2021)

Power reactors under construction
Start * Reactor Model Gross MWe

2021 Finland, TVO Olkiluoto 3 EPR 1720
2021 Slovakia, SE Mochovce 3 VVER-440 471
2023 Slovakia, SE Mochovce 4 VVER-440 471
2023 France, EDF Flamanville 3 EPR 1650
2026 UK, EDF Hinkley Point C1 EPR 1720
2027 UK, EDF Hinkley Point C2 EPR 1720

* Latest announced/estimated year of grid connection.

Increased capacity

Increased nuclear capacity in some countries is resulting from the uprating of existing plants. This is a highly cost-effective way of bringing on new capacity. Numerous power reactors in the USA, Switzerland, Spain, Finland, and Sweden, for example, have had their generating capacity increased.In the USA, the Nuclear Regulatory Commission has approved about 165 uprates totalling over 7500 MWe since 1977, a few of them 'extended uprates' of up to 20%.

In Switzerland, all operating reactors have had uprates, increasing capacity by 13.4%.

Spain has had a programme to add 810 MWe (11%) to its nuclear capacity through upgrading its nine reactors by up to 13%. Most of the increase is already in place. For instance, the Almarez nuclear plant was boosted by 7.4% at a cost of $50 million.

Finland boosted the capacity of the original Olkiluoto plant by 29% to 1700 MWe. This plant started with two 660 MWe Swedish BWRs commissioned in 1978 and 1980. The Loviisa plant, with two VVER-440 reactors, has been uprated by 90 MWe (18%).

Sweden's utilities have uprated three plants. The Ringhals plant was uprated by about 305 MWe over 2006-14. Oskarshamn 3 was uprated by 21% to 1450 MWe at a cost of €313 million. Forsmark 2 had a 120 MWe uprate (12%) to 2013.

Plant lifetime extensions and retirements

In France, there are rolling ten-year reviews of reactors. In 2009 the Nuclear Safety Authority (ASN) approved EDF's safety case for 40-year operation of its 900 MWe units, based on generic assessment of the 34 reactors. There are plans to take reactor lifetimes out to 60 years, involving substantial expenditure.

https://www.world-nuclear.org/inform...countries.aspx

Emerging Nuclear Energy Countries(Updated March 2021)

About 30 countries are considering, planning or starting nuclear power programmes.
These range from sophisticated economies to developing nations.

Belarus, Bangladesh and Turkey are all constructing their first nuclear power plants.

About 30 countries are considering, planning or starting nuclear power programmes, and a further 20 or so countries have at some point expressed an interest. In the following list, links are provided for those countries that are covered by specific country pages:

In Europe: Albania, Serbia, Croatia, Portugal, Norway, Poland, Estonia, Latvia, Lithuania, Ireland, #Turkey.

In the Middle East and North Africa: Gulf states including Saudi Arabia, Qatar and Kuwait; Yemen, Israel, Syria, Jordan, Egypt, Tunisia, Libya, Algeria, Morocco, Sudan.

In west, central and southern Africa: Nigeria, Ghana, Senegal, Kenya, Uganda, Tanzania, Zambia, Namibia, Rwanda, Ethiopia.

In Central and South America: Cuba, Chile, Ecuador, Venezuela, Bolivia, Peru, Paraguay.

In central and southern Asia: Azerbaijan, Georgia, Kazakhstan, Mongolia, Bangladesh, Sri Lanka, Uzbekistan.

In SE Asia and Oceania: Indonesia, Philippines, Vietnam, Thailand, Laos, Cambodia, Malaysia, Singapore, Myanmar, Australia.

In east Asia: North Korea.

https://www.world-nuclear.org/inform...-s/poland.aspx

Nuclear Power in Poland (Updated February 2021)

Poland plans to have nuclear power from about 2033 as part of a diverse energy portfolio, moving it away from heavy dependence on coal.
Poland earlier considered a stake in the planned Visaginas nuclear power plant in Lithuania.

https://www.world-nuclear.org/inform...lithuania.aspx

Nuclear Power in Lithuania(Updated January 2021)

Lithuania closed its last nuclear reactor, which had been generating 70% of its electricity, at the end of 2009, due to EU pressure.
Electricity was a major export until the closure of Lithuania's nuclear plant.

A new nuclear plant is planned to be built by GE Hitachi. It is to involve vendor equity as well as the other Baltic states. Plans were affirmed in a 2014 multi-party agreement. However, it will require cooperation from other Baltic states, Poland and/or EU.

#Turkije (niet Europa)
https://www.world-nuclear.org/inform...-z/turkey.aspx

[dewanand]

beete fout ok zo

nu begin ik het te begrijpen hoe wij het milieu supersnel kunnen redden

ben lid van platform energie transitie delft en ik zal dit idee voor hun snel uitwerken en publiceren

geheim is

decentrale, micro groene energie produktie units, OFF GRID en Local grid bij alle kleine consumenten en grotere.

ik geloof nu hierin omdat de natuur en alle biologische ecosystemen ook zo functioneren al minstens 650 miljoen jaar op aarde.

en het hoeft niet HI TECH te zijn ok, low tech is nog leuker en simpeler, goedkoper