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Archive for the category “Netherlands”

Hydraulic Windpark North Sea?

[source]

In conventional wind turbines heavy generators are located at the top of a wind turbine, requiring heavy towers. As a rule of thumb: 1000 kilo less generator weight implies 1900 kg less tower weight. The Mexican researcher Antonio Jarquin Laguna wrote a simulation-based Phd thesis at the Delft university in the Netherlands to investigate if it was possible to substantially reduce nacelle weight. He explored the idea to skip the generator-at-the-top completely and replace it with a much lighter pump (ca. 50% less weight). Several wind turbines could contribute to hydraulic pressure, to be converted at a central location with a few large Pelton turbines. The gain would be lighter wind turbines.

[maritiemnieuws.nl] – Onderzoek naar ‘hydraulisch’ windpark op zee door TU Delft
[trouw.nl] – Noordzeemolens als waterkrachtcentrale
[repository.tudelft.nl] – Centralized electricity generation in offshore wind farms using hydraulic networks
[windpowerengineering.com] – Goodbye gearbox, hello hydraulics (US design 2012)
[beta.machinedesign.com] – Hydraulic Wind Turbines?
[wikipedia.org] – Hydraulic drive system
[wikipedia.org] – Hydraulic machinery
[wikipedia.org] – Hydraulic motor
[highered.mheducation.com] – Mass, Bernoulli and Energy Equations (pdf)

Vertical Farming Taking Off

Wikipedia:

Vertical farming is the practice of producing food in vertically stacked layers, such as in a skyscraper, used warehouse, or shipping container. The modern ideas of vertical farming use indoor farming techniques and controlled-environment agriculture (CEA) technology, where all environmental factors can be controlled. These facilities utilize artificial control of light, environmental control (humidity, temperature, gases…) and fertigation. Some vertical farms use techniques similar to greenhouses, where natural sunlight can be augmented with artificial lighting and metal reflectors

The concepts was pioneered first in 2014, with Vertical Fresh Farms operating in Buffalo, NY/USA, specializing in a wide variety of salad greens, herbs, and sprouts.

Vertical Fresh Farms has been farming commercially on a small scale in Buffalo, New York for a few years, but a larger scale commercial facility is currently under construction in the Netherlands. Fruit and vegetables supplier Staay Food Group is erecting a 900 square meter vertical farm, which will have a total cultivation area of 30,000 square meters.

[cleantechnica.com] – Vertical Farming Is Taking Off: Europe’s First Commercial Vertical Farm Under Construction In The Netherlands
[wikipedia.org] – Vertical farming
[philips.nl] – Grootste commerciële stadskwekerij van Europa in Dronten

Utility Scale Dutch Community Wind

[source]

The 20 year old Zeewolde onshore windfarm located in Flevoland, the Netherlands is approaching end-of-life and will be “repowered”: 200 old smaller, technically outdated 850 kW wind turbines, replaced by 93 larger modern ones of 3.5 MW, increasing electricity production 2.5-fold. Price tag: 400 million euro. Required are 80 million euro to leverage the remaining 320 million in bank loans. The old wind park is owned by ca. 200 private citizens, many of them boeren (farmers).

What is unique about the new project is that a new financial participation model will be applied as well as the huge scale (93 turbines, producing 350 MW). A new wind cooperation called De Nieuwe Molenaars (the New Windmillers) was established earlier this year and 50 citizens joined from the start; the organization aims for at least further 1000 private participants. Scheduled delivery date windfarm 2019, production in 2020. Locals will be allowed to participate first. Estimates are that wind parks up to 1000 MW can be financed this way.

[energytransition.org] – Biggest Dutch onshore wind farm to be community owned
[rescoop.eu] – REScoop paves the way for Europe’s largest community energy wind farm
[denieuwemolenaars.nl] – De Nieuwe Molenaars
[Google Maps] – Location, Gruttoweg, Zeewolde

Read more…

E.ON to Invest Millions in Energy Kites

The general idea is: at 450 m altitude the winds are much stronger and persistent than near the ground. So have an air-born kite with propellers generate energy for you and send it to earth through the cable. Typical power gain: 30 households. Prototype installation to be build in Ireland by German energy giant E.ON and Dutch startup Ampyx Power. A power plane lifts off on its own and once at operational altitude starts to generate energy. Claim: 20 times as much energy per installed device mass unit as conventional wind turbines.

Obviously most suitable for not too densely inhabited areas.

[cleantechnica.com] – E.ON Invests In Innovative Drone-Based Airborne Wind Energy
[handelsblatt.com] – E.ON Invests Millions in Flying Wind Turbines
[wikipedia.org] – List of airborne wind energy organizations
[ampyxpower.com] – Dutch company Ampyx Power, that will cooperate with E.ON

[trouw.nl] – Zweefvliegtuig gaat groene stroom opwekken, niet hier maar in Ierland

Plane (drone) flies attached to a cable in 8-shapes. Power: 2 MW.

Read more…

Zonnepanelen Straks Uit Groningen

[source/Powerfield/Twitter]

De firma Powerfield uit Dokkum bouwt binnenkort een fabriek voor zonnepanelen op het industrieterrein van Delfzijl (“Energy Valley”), om te beginnen met een capaciteit van 1.2 miljoen panelen per jaar, gerealiseerd door een personeelsbestand van 100-150 man. Bouwkosten 15-20 milljoen. Het gaat om assemblage van panelen, niet om de productie van cellen.

[trouw.nl] – Zonnepanelen straks ook ‘made in Groningen’

Ammonia (NH3) as Storage Medium for Renewable Energy

Energy from wind, solar and water in; ammonia (NH3) as energy storage medium out, eliminating carbon from the cycle. The idea is to convert renewable energy into liquid ammonia when electricity prices are low and burn it as fuel in gas-fired power plants when there is a shortage of renewable energy.

Liquid ammonia at 1 Bar in a 60,000 m3 tank contains more than 200 GWh of energy (annual production of 30 wind turbines).
Demonstration facility planned in Holland to be completed in five years.

[vattenfall.com] – Dutch gas plants made fossil free?
[resilience.org] – Is ammonia the holy grail for renewable energy storage?
[wikipedia.org] – Ammonia (NH3)
[protonventures.com] – Proton Ventures, What We Do

Cradle To Cradle

The Dutch city of venlo decided to implement the design recommendations behind “C2C”.

Cradle to Cradle: Remaking the Way We Make Things is a 2002 non-fiction book by German chemist Michael Braungart and U.S. architect William McDonough. It is a manifesto detailing how to achieve their Cradle to Cradle Design model. It calls for a radical change in industry: a switch from a cradle-to-grave pattern to a cradle-to-cradle pattern. It suggests that the “reduce reuse recycle” methods perpetuate this cradle-to-grave strategy, and that more changes need to be made. The book discourages downcycling, but rather encourages the manufacture of products with the goal of upcycling in mind. This vision of upcycling is based on a system of “lifecycle development” initiated by Braungart and colleagues at the Environmental Protection Encouragement Agency in the 1990s: after products have reached the end of their useful life, they become either “biological nutrients” or “technical nutrients”. Biological nutrients are materials that can re-enter the environment. Technical nutrients are materials that remain within closed-loop industrial cycles.

[wikipedia.org] – Cradle to Cradle: Remaking the Way We Make Things
[amazon.com] – Cradle to Cradle: Remaking the Way We Make Things

Important Step Taken Towards Energy Hub North Sea

TenneT TSO B.V. (Netherlands), Energinet (Denmark) and TenneT TSO GmbH (Germany) today signed a trilateral agreement for the development of a large renewable European electricity system in the North Sea. This so-called ‘North Sea Wind Power Hub’ has the potential to supply 70 to 100 million Europeans with renewable energy by 2050.

This important step towards a broad consortium was taken in the presence of the European Commissioner for an Energy Union, Maroš Šefčovič. Mel Kroon, CEO of TenneT, and Torben Glar Nielsen, CTO of Energinet, signed an agreement aimed at investigating the feasibility of one or more ‘Power Link Islands’.

dogger island map north sea

[tennet.eu] – Three TSOs sign agreement on North Sea Wind Power Hub
[tennet.eu] – Cooperation European Transmission System Operators to develop North Sea Wind Power Hub
[offshorewind.biz] – TSOs Sign North Sea Wind Power Hub Deal

TenneT and Energinet, as well as any other parties that want to join, will spend a few years on investigating the details and potential of one or more Power Link Islands. If the TSOs decide to go ahead with the project, a Power Link Island could be developed by approximately 2035

Estimated size: 6.5 km2
Estimated cost: 1.25 billion euro

[cphpost.dk] – Denmark looking into building North Sea wind energy island

[greentechmedia.com] – Denmark, Germany and the Netherlands Want to Build an Island Hub to Support 100GW of Offshore Wind

The island might feature power-to-gas as a storage technique to utilize high volumes of wind generation, said Rasmussen. The North Sea is home to a sophisticated network of gas pipelines, which could help bring wind-generated gas to countries around Europe.

“A part of this work will be to include power-to-gas technology and other storage technologies,” he said. “What, when [and] how much is what we will look into further. It is too early to go into details.”

The Netherlands Fossil Free in 2030

“A new world”. Dutch economist and politician Herman Wijffels about the necessity of a global sustainable transition.

There is pressure mounting in the Netherlands that the country should speed up the implementation of the Paris accords and EU energy policy of “Europe fossil free by 2050” and get the country largely fossil-free as early as 2030. The public financial position of the Netherlands is good (surplus) and there is broad popular support for the 2030 policy objective. And last but not least: there is a large commercial advantage if you are able to offer energy services to the rest of a world-in-transition. The idea is to influence the program of the new government, the formation of which is yet underway.

[en.wikipedia.org] – Herman Wijffels
[energiecommissie.nl] – Sign the petition for The Netherlands fossil free by 2030.
[drift.eur.nl] – Oproep aan nieuw kabinet: Nederland fossielvrij in 2030
[deepresource] – Netherlands Sustainable by 2030
[gewoon-duurzaam.nl] – Manifest Jan Terlouw voor een duurzamer Nederland

[gewoon-duurzaam.nl] – New Dutch national energy commissioner Ruud Koornstra.
[duurzaam-ondernemen.nl] – Ruud Koornstra eerste Energiecommissaris van Nederland

Tennet Installs ‘Sockets’ at Sea

[source] Dutch grid provider Tennet wants to install 5 of these able to convert 3.5 GW wind AC into DC in order to connect planned offshore wind parks to the Dutch grid.

[source] Dolwin “socket” already installed at German part of the Northsea by Tennet.

[nltimes.nl] – Dutch Grid Operator to Invest €25 Billion in North Sea Wind Energy
[trouw.nl] – Tennet gaat het ‘stopcontact op zee’ beheren

Read more…

Dutch Island Ameland Energy Independent in 2020

Ferry to Ameland. Every Dutchman has positive associations with the island of Ameland. Ameland: that’s beaches, dunes, birds, holiday, cycling trips.

The ambitious mayor of Ameland wants to bring his island energy independence with solar panels, fuel cells, heat pumps, energy storage and bio gas. No wind turbines.

[en.wikipedia.org] – Ameland
[duurzaamameland.nl]

[source]

Read more…

MegaWindForce Turbine

A rotating ring containing many generators rather than a traditional axis and single generator plus gear box. Turbine can be constructed with low weight carbon fiber, low maintenance and long life span.

A company in Winschoten, the Netherlands, patented a new wind turbine design, with which it claims it can generate the same amount of electricity with lighter wind turbines with a rotating ring rather than an axis, causing enormous wind forces to be absorbed by a larger surface, enabling lighter design. Under offshore conditions a Megawindforce turbine of 135 m tip height would generate the same power as a conventional 200 m turbine. Additionally the new turbine design is supposed to begin to generate energy at lower wind speeds by gradually switching on ever more generators inside the ring with increasing wind speed. Because of this variable load principle the turbine can operate at lower rotational speeds which lowers the forces, enabling a staggering 80% reduction of the overall weight and proportional lower cost.

Cost claim: 3 cent per kWh.

A prototype is being built in the Groningen province this year, financially supported by Groningen authorities.

[megawindforce.com]
[twitter.com] – Mega Windforce

[deingenieur.nl] – Windturbine met Bladen op een Ring
[trouw.nl] – Nederlandse megamolen mooi klein voor Hollandse kust

2016 Was a Bad Onshore Wind Energy Year


The windindex (windex) of Yard Energy Group.

Wind parks in the Dutch province of Gelderland didn’t do very well in 2016 as there was 20% less wind in the province, the 3rd or 4th worst wind year in a century. And the first months of 2017 weren’t very good either. On a positive note 2015 was a good year.

Solution: go offshore.

[gelderlander.nl] – Windmolens draaien verlies door gebrek aan wind
[yardenergy] – Origin Windex wind energy index
[deepresource] – Gold Mine North Sea

Thermo-Acoustic Heat Pump

ecn-thermal-accustic-heat-pump

The Dutch national energy bureau ECN has build the prototype of a heat pump that is smaller than conventional heat pumps and potentially could become even a lot smaller. What is special about this heat pump is that it operates on sound. Sound is a pressure wave. If air is compressed it gets warmer. The ECN heat pump is a closed tube with speakers.

Core parameters: heat pump is a wall-mounted box of 40x50x10 cm. You need electricity for an air pump and speakers. Electricity of 1 kWh returns 4 kWh of heat. Air is pumped from outside and led through the (inaudible) “sound heat pump” and finally pumped into the living space, providing ventilation as an extra.

Within the Dutch context that means that you get the same heat performance from 2 kWh (40 cent) as from 1 m3 gas (64 cent). Eventually that heat pump can be powered by electricity from renewable sources. The heat pump should cost ca. $1,000 including installation.

[trouw.nl] – Warmtepomp van ECN wordt de nieuwe gevelkachel
[wikipedia.org] – Thermoacoustic heat engine

At [1:00] the sound-heat conversion is demonstrated. Sound in the tube pumps heat from lower to higher temperatures.

The thermo-acoustic principle in reverse: use heat to generate standing sound waves and create mechanical work.

Recycling Impressions

Solar Project Completed in the Netherlands

delfzijl-zonneparkLargest solar park in the Netherlands, ironically covered in snow

Location: Delfzijl [Google Maps]
Capacity: 7500 households
Panels: 120,000
Owner: German energy company Wirsol
Size: 65 soccer fields

Coming Spring the title “largest solar park in the Netherlands” will move from Delfzijl to Vlissingen [Sloehaven], with 140,000 panels.

In general, investment in solar energy is booming in the Netherlands. In 2016 500 MW new capacity was installed, 100 MW more than in 2015.

[nos.nl] – Delfzijl heeft grootste zonnepark van Nederland
[nu.nl] – Grootste zonnepark van Nederland geopend in Delfzijl

zonnepark-delfzijl[source] Same park

Dutch Rail Runs 100% on Wind Power

Roger van Boxtel, the CEO of the Nederlandse Spoorwegen (Dutch Rail, DR) could be persuaded to pull a stunt and let himself be tied to a wick of classic Dutch wind mill to promote the point that as of January 1, DR is for 100% powered by wind energy.

The international dispersed wind parks obviously don’t really power the locomotives of DR, but what DR did was subsidize the construction of sufficiently wind power, matching their own electricity demand. In end effect it doesn’t really matter, since Europe has an interconnected grid. What DR did was giving the good example to other corporations to do the same and as such give themselves a well deserved green image and help realizing the renewable energy transition.

[cleantechnica.com] – All Dutch Trains Now Run 100% On Wind Power
[deepresource] – Dutch Railway Powered for 100% by Wind in 2017

Offshore Wind 40% Cheaper By 2023

flow

The Dutch national energy bureau ECN says that by 2023, the cost of offshore wind energy could be reduced with 40%. Way to achieve this:

  1. Technological innovation, like larger rotors and larger distance between turbines (15%)
  2. Design improvement, wind-park layout, logistics (6%)
  3. Efficiency project developer (10%)
  4. Cooperation between wind parks (10%)
  5. Optimization organisation & (capital) cost (3%)

This would mean that the price of our virtual barrel of oil equivalent, calculated here, would be reduced to $6/barrel (if that wind energy is applied for mobility purposes).

[flow-offshore.nl] – FLOW, Competitive Through Cooperation (pdf 88p, Eng.)
[flow-offshore.nl] – FLOW, Concurrerend Door Samenwerking (pdf 88p, Ned.)
[windenergiecourant.nl] – ECN: 40 procent goedkoper offshore wind haalbaar

Windpark Krammer

Halleluja video (turn down the volume)

Yet another wind park? This one is different as it is being realized thanks to the efforts of (4000) private persons in the Dutch province of Zeeland.
34 turbines will be producing at least 100 MW for 100,000 households.
Start project 2016. Operational: 2019.
Multinationals buying electricity: Akzo, DSM, Google and Philips.

[Google Maps] – Location
[twitter.com] – Windpark Krammer
[windparkkrammer.nl] – Infographic (pdf)

Read more…

Dutch Post-War Electricity Production

nl-electricity-production

Studying this graph could give cause to a somewhat relaxed attitude regarding doom stories related to a so-called “energy crisis”. The kicker: in 1945 there was hardly any electricity production in the Netherlands worth mentioning. If you project the current level of “decentral” generated electricity (wind, solar, bio, hydro, etc. and fossil based electricity and heat production by private parties other than power stations) onto the past, you arrive at 1970. Life was already pretty good in those days. There is no reason to assume that society would break down if for some reason electricity production would be reduced substantially.

nl-electricity-production-source

Not to give the impression that “decentral” is the same as “renewable” (dark blue). It isn’t and there is no reason to be complacent. But once these offshore wind GWs are installed after 2030 there is no reason to despair with the Dutch energy situation as far as electricity is concerned. Space heating is a different story. Solution approach: seasonal storage of solar heat and most of all geothermal.

Source: cbs.nl

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