Solar Firm To Develop Novel Electronics For Rail Renewables
The title of this post is the same as that of this article on Engineering and Technology.
This is the introductory paragraph.
Solar energy company Riding Sunbeams has won funding to develop power electronics technology that will enable it to feed renewable electricity directly into railway overhead wires.
Because solar panels and lithium-ion batteries work in DC and overhead electrification works in AC, this sentence describes the main objective of the project.
The Daybreak demonstrator will repurpose existing technology already being used on UK rail networks for other purposes to create a new device that will provide the required power conversion.
Existing technology and equipment will be used to save time and costs and because it is already rail-certified.
The rest of the article fleshes out a few details.
The test system will be installed at Quinton Rail Technology Centre at Long Marston.
This is the closing paragraph.
In particular, Riding Sunbeams hopes its technology will be able to play a part in delivering 70MW of direct-wire renewable generation to help power the soon-to-be-electrified Core Valley Lines in South Wales through a mixture of solar, wind and energy storage.
As electrification in the Core Valley Lines will be discontinuous, it could appear that the technology developed in this project could help connect and reduce costs.
Heated Railway Platforms Tested To Avoid Ice Accidents
The title of this post is the same as the first part of the title on this article on Engineering and Technology.
The platforms have been developed by researchers at Sheffield Hallam University and have received a share of the Government funding, I wrote about in First Of A Kind Funding Awarded For 25 Rail Innovation Projects, where it is Project 4.
These paragraphs describe the project.
The concrete slabs come with a built-in heating system that activates in freezing conditions to prevent dangerous icy conditions for passengers.
Rail Safety and Standards Board figures show that 19 people were killed and more than 7,000 were injured in accidents around platform edges on Britain’s railways in a recent five-year period.
It looks like there’s scope for this simple idea to save a few lives.
COVID-19 Reconstruction Projects
If the trial installation or installations, that will be paid for by the Government grant is or are a success, I can see large numbers of the UK’s three thousand or so stations being fitted with these platforms.
This is surely the sort of project, that could be rolled out on lots of sites across the UK to get the constriction industry working again, after COVID-19!
Will Steam Solve The Zero Carbon Freight Locomotive Problem?
Steamology Motion has now been awarded two Department of Transport grants to develop modern steam power for UK railways.
February 2019 – W2W Zero Emissions Power System
In Grants To Support Low-Carbon Technology Demonstrators, I quoted an extract from this article on Railway Gazette to describe their W2W Zero Emissions Power System.
Steamology’s Water 2 Water concept will use compressed hydrogen and oxygen gas in a ‘compact energy-dense steam generator’ to produce high pressure superheated steam to drive a turbine, which will generate electricity to charge the batteries as a ‘range extender’ for a Vivarail Class 230 multiple-unit produced from former London Underground vehicles.
There is not much on the Internet about this project, but I did find this article on the Bournemouth Echo, which is entitled Team Behind Chalres Burnett Steam Car Is Working On Trains.
Note that the typo in the headline is not mine, but one of the worst, I’ve seen in a newspaper, since the heady days of the Liverpool Echo in the 1960s, which gave Fritz Spiegl a second career, with all its spelling mistakes.
In the article, Chief Engineer; Christopher Lack describes the steam power like this.
We take hydrogen and oxygen and we burn them inside the chamber which then creates steam and we use that steam to drive a turbine which then powers the generator.
That all sounds very feasible, despite being a bit like the power system of a Space Shuttle, which carried liquid hydrogen and oxygen in the external tank.
At take-off the Space Shuttle carried 629.3 tonnes of liquid oxygen and 106.3 tonnes of liquid hydrogen. Will hydrogen and oxygen always have a similar 5.92 ratio by weight in any combustion process?
June 2020 – Zero Emission Rail Freight Power
In First Of A Kind Funding Awarded For 25 Rail Innovation Projects, I described this project like this.
Hydrogen-based steam turbine system to provide zero emission power for existing freight locomotives.
This is surely a much bigger challenge, as a Class 66 Locomotive for example, has a power output of nearly 2,500 kW, which might need to be sustained for three or four hours. That could be ten MWh, which explains why battery freight locomotives haven’t been developed.
As hydrogen contains 147 MJ/Kg of energy, does that mean that about 250 Kg of hydrogen and an equivalent amount of oxygen would be needed to power the locomotive for four hours?
The amount of space required for the fuel doesn’t seem to be ridiculously large, so that shouldn’t be a problem.
One of the processes in the chemical industry, that I haven’t modelled is combustion. This is probably because, when I was building mathematical models in the chemical industry, it was for ICI Plastics Division and their processes were all about pressure and/or mixing large amounts of chemicals in huge reaction vessels.
But thinking about it, if you burn hydrogen and oxygen in a combustion chamber, you’ll generate a lot of heat, but not much superheated steam to drive a turbine.
So could Steamology Motion have combined the combustion chamber and the boiler in some way?
Suppose, hydrogen and oxygen are burned in a combustion chamber and controlled amounts of water are injected into the chamber.
- Obviously, not enough to stop the combustion.
- The water would vaporise and surely join the combustion products and come out as turbine-ready superheated steam.
I suspect some researcher somewhere has used this process to see if they can drive a steam turbine from hydrogen and oxygen.
Perhaps, they were experimenting with a hydrogen-based energy storage system.
- An electrolyser powered by surplus renewable energy, would split water into hydrogen and oxygen, which would be stored under pressure.
- To recover the energy, the hydrogen and oxygen would be burned together to create superheated steam to drive a turbine.
The process could work, with an efficient hydrogen and oxygen to superheated steam generator.
But would it be economic, when compared with a hydrogen fuel cell? Fuel cells don’t need to have an oxygen feed and just uses common-or-garden air!
On the other hand, as the US space program has shown, it might work with liquid hydrogen and oxygen, which would possibly need less storage space and could mean a longer range for the locomotive.
Conclusion
It is a very large engineering challenge for Steamology Motion to get their system to work.
But, I do believe, that it’s possible to make the idea work.
I also think that the Government wouldn’t have signed up for a second project, if the first project had been a complete failure.
But, if Steamology Motion can convert a Class 66 locomotive from a polluting, noisy, carbon-spewing dinosaur into an eco-friendly hydrogen-electric locomotive, they will have done the planet an enormous favour, as there are tens of thousands of diesel locomotives, that could be converted.
They will also make billions for themselves!
Air-Powered Energy Storage Knocks Out Coal & Gas — Wait, What?
The title of this post, is the same as that of this article on CleanTechnica.
After reading, this must read article, it could have had a title with Knocks Out Coal, Gas and Nuclear.
It makes a passionate article for Highview Power’s long term air-powered energy storage and other systems with a similar energy profile like Form Energy.
It also showed this good graphic from Highview Power, which shows how their system works.
This paragraph gives Highview’s view on what their CRYObatteries will do.
Grid operators are turning to long-duration energy storage to improve power generation economics, balance the grid, and increase reliability. At giga-scale, CRYOBatteries paired with renewables are equivalent in performance to – and could replace – thermal and nuclear baseload power in addition to supporting electricity transmission and distribution systems while providing additional security of supply,” enthuses Highview.
The author then chips in with the attitude of the US Department of Energy.
Don’t just take their word for it. The US Department of Energy is eyeballing long duration energy storage for the sparkling green grid of the future despite all the hot air blowing out of 1600 Pennsylvania Avenue.
In an interesting twist, the Energy Department’s interest in long duration storage was initially connected to its interest in at least preserving, if not growing, the nation’s aging fleet of nuclear power plants.
Will renewables be able to see off nuclear in a country with plenty of sun and/or wind like the United States?
Conclusion
With a lot of help from their friends in the long term energy storage business, the answer must be yes!
The Anonymous Widower 