The Anonymous Widower

Zero-Carbon Lighting Of Large Spaces

In Cockfosters Train Depot – 12th January 2023, I took a series of pictures of Cockfosters Train Depot, of which these are a selection.

Note, the lamp clusters on top of tall poles to light the area.

You see lots of these lights to illuminate play areas, car parks, rail sidings and truck depots.

Could a SeaTwirl or another vertical wind turbine be placed as high as possible up the pole, that supports the lights?

  • A battery would be needed for when the wind doesn’t blow.
  • A control system would be used to use the lights, when they are needed.
  • The poles would be able to be laid down, like many lights can be, for servicing from the ground.

Cockfosters would be an excellent location for a test, as the wind is always blowing and the site has an altitude of nearly a hundred metres.

January 14, 2023 Posted by | Design, Energy, Transport/Travel | , , , , | Leave a comment

National Grid Goes Carbon-Free With Hydrogen-Powered Substation Trial

The title of this post, is the same as that of this press release from National Grid.

These are the main bullet points.

  • Hydrogen powered unit (HPU) quietly provided carbon-free electricity to National Grid’s Deeside Centre for Innovation
  • Only emission is water
  • HPUs could save an estimated 500,000 kg of carbon across all National Grid substation sites

I am an Electrical Engineer and I had never realised that all those electricity substations around the country need a backup electricity generator.

These four paragraphs describe the trial and the generator used.

A GeoPura 250kW hydrogen power unit (HPU) contained within a transportable shipping container measuring 7.2 m by 2.5 m was installed at DCI and produced the energy to power low-voltage equipment needed for National Grid’s innovation testing projects and site operations. The trial tested the capabilities and feasibility of HPUs as direct replacements for backup diesel generators across more than 250 National Grid substation sites, the data will now be analysed and shared later this year.

National Grid currently use diesel generators alongside batteries to provide backup power to a substation for key activities such as cooling fans, pumps, and lighting, enabling it to continue to perform its crucial role in the electricity transmission system.

These backup generators are rarely used and have less than a 1% chance of operating per year, however, on the rare occasion that backup power is required, changing from diesel to low-carbon emission alternatives have the potential to reduce carbon intensity by 90%* and save over 500,000 kg of carbon emissions.

The HPU at Deeside has power capabilities of up to 100 kW in continuous operation mode and up to 250 kW for 45 minutes and uses 100% green hydrogen. The unit is quieter and the hydrogen cannisters used to fuel the generators can be safely stored on site.

I have some thoughts.

Deeside Centre For Innovation

The Deeside Centre for Innovation (DCI), a state-of-the-art testing facility hosting a 400 kV modified substation, designed as a unique environment for development and trial of innovative technologies and practices.

I think there’s something rather cunning about the DCI, as it means that anybody with a good idea will probably approach National Grid for help with the testing.

Visit Deeside Centre for Innovation for more information.

GeoPura

GeoPura has a totally zero-emissions answer to how we’re going to generate, store and distribute the vast amount of energy required to decarbonise our global economies. Or so their web site says!

This page on GeoPura’s web site, gives several case studies of how they work.

They would appear to provide zero-carbon power in widespread locations for Winterwatch, Springwatch etc. for the BBC.

January 13, 2023 Posted by | Energy, Hydrogen | , , , , , , | 3 Comments

Wind Generation Sets New Record In UK Surpassing 21 GW

The eye-catching title of this post, is the same as that of this article on Renewables Now.

I regard anything over 20 GW as very good, as the UK’s average daily consumption is typically around 23 GW, so surely we can find a couple of gigawatts of biomass, gas, hydro or nuclear.

The Renewables Now article says this about UK electricity generation.

According to National Grid ESO, on Monday, January 9, wind accounted for 50.2% of British electricity, nuclear for 15.9%, gas for 13.1%, imports for 10%, biomass for 4.8%, hydro for 3.8%, solar for 1.3% and coal for 1.1%. Tuesday’s wind record may undergo slight adjustments in expectation of all data for yesterday.

I shall be following these figures.

  • Especially, as Wikipedia says another 3 GW will be installed this year.

But it does seem that we’re getting there with renewable electricity.

A Thought On Energy Storage

I also think that if we are generating large amounts of electricity at times, which are more than we need, then we had better crack on and build lots of energy storage.

If we don’t need the energy and Europe or Ireland doesn’t want it, then we must store it, so that if the wind isn’t blowing we can recover it for a useful purpose, even if it is only selling it to the Germans to make hydrogen, which is used to replenish their stores.

 

January 12, 2023 Posted by | Energy, Energy Storage | , | 2 Comments

Giant Solar Farm Project In Doubt After Disagreement Between Mike Cannon-Brookes And Andrew Forrest

The title of this post, is the same as that of this article on the Guardian.

This is the sub-heading.

Australian billionaires had backed $30bn Sun Cable venture designed to help power Darwin, Indonesia and Singapore but the company has gone into voluntary administration.

It does look like the administrators will be able to continue the project and look for more funding.

Qatar must be in the frame, as this link will probably cut some of their gas sales.

I wrote about this monster project in Sun Cable’s Australia-Asia PowerLink.

I wonder if this administration will have any effects on the prospects of the other giant intercontinental interconnectors?

  1. EuroAfrica Interconnector – See The EuroAfrica Interconnector
  2. EuroAsia Interconnector – See The EuroAsia Interconnector
  3. Morroco-UK Power Project – See Moroccan Solar-Plus-Wind To Be Linked To GB In ‘Ground-Breaking’ Xlinks Project
  4. TransPacific Interconnector – See Chile Wants To Export Solar Energy To Asia Via 15,000km Submarine Cable

The economics will decide. But I do think, the last one could be a bit ambitious.

January 12, 2023 Posted by | Energy, Energy Storage | , , , , , , , , , , , | Leave a comment

Would A Solar Roof With Added Vertical Turbines Work?

This picture shows Oakwood station on the Piccadilly Line.

Note.

  1. The station is the second most Northerly on the line.
  2. It opened in 1933.
  3. It is a classic Charles Holden design.
  4. It is a Grade II* Listed building.
  5. The station is on top of a hill and has an elevation of 71 metres above sea level.

This Google Map shows a close-up of the roof.

There might be a few aerials on the roof, but no solar panels.

Oakwood’s Location And Weather

I used to live near Oakwood station and it had its disadvantages.

  • Cycling home was always up a steep hill.
  • It could get very cold at times.

There even used to be a plaque at the station, which said that if you flew East, the first land you would hit would be the Urals.

Oakwood station could be an ideal renewable power station.

  • The concrete and brick box of the station is probably exceedingly strong.
  • Solar panels could cover the flat roof.
  • SeaTwirls or other vertical turbines could be mounted around the solar panels.
  • There could still be spaces for the aerials.
  • I wonder what the reaction of English Heritage would be.

Should we call this mixed solar and wind power generation, hybrid renewable energy? Or do we overdo, the use of hybrid?

London Underground have other stations of a similar design including Sudbury Town and Acton Town.

The Wider Area To The West Of Oakwood Station

This Google Map shows the area to the West of Oakwood station.

Note.

  1. The striped roofs at the top of the map, with sidings for trains to the North, is Cockfosters Train Depot for the Piccadilly Line..
  2. The large building in the South-West corner is Southgate School, which I watched being built in the early 1960s, from my bedroom window in our house opposite. It is a concrete frame building typical of the period.
  3. Oakwood station is at the East side of the map and indicated by a London Underground roundel.

I think the possibilities for hybrid power generation in this area are good.

Cockfosters Depot

Cockfosters Depot could be an interesting site to develop as a renewable power station.

  • There’s no way the site could be developed for housing, as it’s in the Green Belt.
  • Road access is bad, but access for trains is good.
  • I estimate that the depot is an area of at least five square kilometres.
  • It’s still windy in the depot.

But it could have a solar roof and a few vertical wind turbines over the whole depot as designs and panels improve.

Southgate School

Southgate School could have a similar setup to Oakwood station.

Opportunities At Cockfosters Station

This Google Map shows a 3D image of Cockfosters station and the buildings around it.

Note.

  1. Cockfosters station is indicated by the roundel.
  2. The station is a Grade II Listed building.
  3. The station has an elevation of 97 metres.
  4. Half of the station car park is going to be turned into housing.
  5. Trent Park lies to the North of the station.
  6. The road in front of the station is Cockfosters Road, which to the North joins the M25 at Junction 24.
  7. The building between Cockfosters Road and the railway used to be offices, but it is now being converted into housing.

That high roof of the housing development, must be an ideal candidate for solar panels and vertical wind turbines.

Conclusion

I have tried to show the potential of just one of the small hills that ring London.

 

 

January 11, 2023 Posted by | Energy | , , , , , , , , | 2 Comments

The Ultimate Bus Stop

London has very comprehensive bus stops as these pictures show.

Note.

  1. Most bus stops have a pole mounted roundel, that can be seen from a reasonable distance. In many cases, anybody with reasonable sight can see the roundel for the next stop.
  2. Where space permits, bus stops have a shelter with seats, maps and instructions on ticketing.
  3. Some stops have been extended into the road, so that it is a level step into and out of the bus.
  4. As shown in the pictures, so bus stops have displays showing the next ten buses, that will be arriving.

But I do think, they could be improved, with extra features.

Internet Connectivity

I feel strongly, that all bus stops should have good internet connectivity.

This could be 4G, 5G or just wi-fi, but I believe this could help with the safety of people on the street.

Comprehensive Lighting

To contribute to safety, I also feel that all bus stops should be well lit.

CCTV Issues

I also feel that all bus stops should have provision for CCTV, so if there was a need, it could be quickly fitted. But if the bus stop had good internet connectivity, then this shouldn’t be a problem.

Phone Charging

New buses have this feature, so why not at the stops?

Power Supply Issues

If we add all these features, we could be needed an uprated power supply.

  • So could we see bus stops, with solar panels on the roof.
  • Perhaps even a mini wind turbine?
  • I think a vertical wind turbine, which was similar to a SeaTwirl, but smaller, could be ideal!
  • Could it be called a StreeTwirl?
  • A self-powered bus could be created with the addition of a battery.

Self-powered bus stops might be easier to install.

Conclusion

Bus stops will have more features in the future.

January 10, 2023 Posted by | Computing, Energy, Transport/Travel | , , , , , , , , , | 2 Comments

Lützerath: German Coal Mine Stand Off Amid Ukraine War Energy Crunch

The title of this post, is the same as that on this article on the BBC.

This is the sub-heading.

From her tiny wooden treehouse, which sways precariously in the winter wind, a young woman watches an enormous mechanical digger tear into the earth below, its jaws edging ever closer to the village which she’s determined to save.

And these two paragraphs outline the protest.

Lützerath, in western Germany, is on the verge – literally – of being swallowed up by the massive coal mine on its doorstep.

Around 200 climate change activists, who are now all that stand in the way of the diggers expanding the Garzweiler opencast mine, have been warned that if they don’t leave by Tuesday they’ll be forcibly evicted.

But this is not about coal or bituminous coal, as we know it in the UK, this mine will produce lignite or brown coal.

Read both Wikipedia entries linked to the previous sentence and you find some choice phrases.

For bituminous coal.

  • Within the coal mining industry, this type of coal is known for releasing the largest amounts of firedamp, a dangerous mixture of gases that can cause underground explosions.
  • Extraction of bituminous coal demands the highest safety procedures involving attentive gas monitoring, good ventilation and vigilant site management.
  • The leading producer is China, with India and the United States a distant second and third.

For lignite.

  • It has a carbon content around 25–35%. and is considered the lowest rank of coal due to its relatively low heat content.
  • When removed from the ground, it contains a very high amount of moisture which partially explains its low carbon content.
  • The combustion of lignite produces less heat for the amount of carbon dioxide and sulfur released than other ranks of coal. As a result, environmental advocates have characterized lignite as the most harmful coal to human health.
  • Depending on the source, various toxic heavy metals, including naturally occurring radioactive materials may be present in lignite which are left over in the coal fly ash produced from its combustion, further increasing health risks.
  • Lignite’s high moisture content and susceptibility to spontaneous combustion can cause problems in transportation and storage.

I don’t think, that we’ve ever burned lignite in the UK for electricity, as it is just too filthy.

This map shows the mine.

Note.

  1. The autobahn at the West of the map, is a six-land highway, so gives an idea of the scale.
  2. The village of Lützerath is towards the bottom of the map in the middle.
  3. What has been left after the mining, is going to take a lot of restoration.

It almost appears that some of the scenes of devastation, we are seeing in the Ukraine are also happening in Germany due to the frantic search for energy.

A 1960s-Educated Engineer’s Attitude To Coal

I was one of about four-hundred engineers in my year at Liverpool University in the 1960s.

  • Quite a few of those engineers were from coal-mining areas and some were children of miners.
  • I remember the graduate recruitment fair at the University in 1968, where the representative from the National Coal Board sat there alone, as if he’d got the 1960s version of Covid-19.
  • Some went and talked to him, as they felt sorry for him.
  • As far as I know, not one of us, went to work for the National Coal Board.

Engineers and other graduates of the 1960s, didn’t feel that coal was the future.

Had Aberfan and the other pit disasters of the era killed coal as a career, amongst my generation of the UK population?

What Should The Germans Do?

It is my view that whatever the Germans do, burning brown coal, should not be on the list. It’s just too polluting.

This article on euronews is entitled Germany And Poland Have A Dirty Big Secret – An Addiction To Brown Coal.

A few years ago, I was in Katowice on Poland and I have never seen such pollution in Europe, since the smogs of the 1950s.

The euronews article says this.

In eastern Germany some members of a little-known group claim they are being ethnically cleansed, not by militia groups, but by the coal mining industry.

Bulldozers have so far destroyed over 130 Sorb villages to make way for the mining of Europe’s dirtiest kind of fossil fuel – brown coal, or lignite as it is also known.

Brown coal mines are open cast and devour vast tracts of land. As well as whole villages farming and wildlife are destroyed.

The Penk family live in the village of Rohne. They feel their whole culture is also being destroyed.

Note that the Sorbs have a Wikipedia entry, which says there are 60,000 Sorbs in Germany.

One thing the Germans are doing is investing in the UK renewable energy industry.

  • RWE own or part-own over 7 GW of offshore wind farms in the UK, some of which are under development.
  • enBW and BP are developing 3 GW of offshore wind farms in the UK.
  • Over twenty offshore wind farms use Siemens Gamesa turbines.
  • The NeuConnect interconnector is being built between the Isle of Grain and Wilhelmshaven.

Would it not be better for the physical and mental health of German citizens, if they abandoned their dirty love of brown coal and spent the money in the North Sea?

January 10, 2023 Posted by | Energy | , , , , , , , , , , , , , , , , | 3 Comments

Norwegian Companies To Explore Using Aluminium In Floating Offshore Wind Turbines

This is based on this press release from World Wide Wind, which is entitled WORLD WIDE WIND AS and HYDRO ASA Signs Letter Of Intent Aiming At Using Aluminium In Offshore Floating Wind Turbines.

This is the first paragraph.

Hydro, the world leading Norwegian aluminium and energy company and World Wide Wind AS, a Norwegian company developing a floating wind turbine, have signed a Letter of Intent (LoI) to explore the use of aluminium in the renewable wind industry. The two Norwegian companies are partnering up to develop floating wind turbines with a design specifically meant for offshore conditions. The goal is to use sustainable and recyclable materials in the construction, including aluminium.

In Do All Wind Turbines Have To Be Similar?, I said this about the radically different turbines of World Wide Wind.

I’ll let the images on the World Wide Wind web site do the talking.

But who would have thought, that contrarotating wind turbines, set at an angle in the sea would work?

This is so unusual, it might just work very well.

As aluminium is lighter, it might be a factor in the success of the design.

This is the last paragraph of the press release.

World Wide Wind’s integrated floating wind turbines are scalable up to 40MW – 2,5 times current wind turbines – and will use less materials and have a smaller CO2 footprint than conventional turbines. It is World Wide Wind’s ambition that these turbines will represent future design for floating wind turbine design.

40 MW is a very large turbine. This is definitely a case of handsome is as handsome does!

 

January 9, 2023 Posted by | Design, Energy | , , , , , , , | Leave a comment

How Liquid Air Could Solve The UK’s Energy Conundrum

The title of this post, is the same as that of this article on The Telegraph.

The article is mainly an article that described the technology and it discloses a few facts.

  • The Carrington plant should be delivered in 2024.
  • Carrington will be a 30 MW/30 MWh system.
  • Efficiency is around 50 %, but there are possibilities to raise it to 70 %.
  • Australia is mentioned as a market.
  • It is likely to be paired with supercapacitors or a flywheel to have a quick start.
  • It seems to me, that turning an idea into a practical system is taking a lot of work and money, and a bit of a rethink.

But hopefully, the system will eventually be developed, as it does promise to be an energy storage system, that doesn’t make high demands on the environment in terms of expensive metals and rare earths.

January 9, 2023 Posted by | Energy, Energy Storage | , , | Leave a comment

Another Renewable Power Idea From Sweden

I have posted some ideas from Sweden on this blog including.

And now there’s the SEATWIRL,  which the company says is the future of offshore wind.

In the Areas Of Use, there is a section with a heading of SeaTwirl For Niche Markets, where this is said.

SeaTwirl has now identified markets where wind turbines of the size of 1 MW can meet a clear market demand and sees a possibility to build a business aimed at these niche markets in parallel with its main target. That can mean revenues for the company sooner than was originally planned.

The niche markets that have been identified are islands and remote seaside villages, fish farms and desalination plants. These are business and places that today are run mainly on electricity from diesel generators, which is both expensive and emits CO2.

One of the places I would use these turbines, is on the apex of four-beam steel portal frame buildings. The original concept for these buildings had been developed at Cambridge University during World War Two and one of the team, had set up a business in Warwickshire, constructing these buildings for barns, factory units and other purposes.

He had programmed a simple computer program, which he ran on a time-shared computer system. I was hired to improve the computer program.

What surprised me was the strength of these buildings and I believe they could support vertical turbines like SeaTwirl along the apex.

I feel there are many other applications, especially if they are designed to be part pf a bigger system.

Conclusion

I like the concept of SeaTwirl.

January 8, 2023 Posted by | Energy | , , | 1 Comment