The Anonymous Widower

Australia’s New Community Solar, Solar-Storage, ‘Solar Hydro’ And Solar Hydrogen Projects

The title of this post is the same as that of this article on Energy Storage News.

This is the introductory paragraph.

In the past couple of weeks, national and state government organisations in Australia have announced various stages of consideration for solar projects with a range of advanced and innovative storage solutions attached.

The article then goes on to describe some projects.

RayGen’s PV Ultra System

This paragraph describes the PV Ultra system.

The fully dispatchable power plant would use RayGen’s own technology PV Ultra, which is a combination of photovoltaic (PV) solar generation with the more expensive and engineering-intensive concentrated solar technology using angled mirror towers (heliostats). The PV Ultra system would generate both electricity and heat.

It’s obviously using what Australia has a lot of; sun to advantage.

RayGen’s Innovative Thermal Storage

This paragraph outlines the principle of RayGen’s thermal method of storage.

This generation technology would in turn be co-located and connected to a ‘Thermal Hydro’ energy storage facility, with 17 hours of storage, which again is based on a technology RayGen is developing. Unlike pumped hydro energy storage which uses two reservoirs at different heights, relying on gravity to drive turbines, the Thermal Hydro plant would use a hot reservoir and a cold reservoir, linked together.

The principle of operation is described in this second paragraph.

The PV Ultra solution will therefore cool one reservoir using photovoltaic power and grid power when needed, while also heating the other reservoir using the heliostats. The difference in temperature would then generate electricity, via an Organic Rankine Cycle engine, a device which uses thermodynamic cycles to convert steam into mechanical energy and is widely used for biomass, waste incinerators and other existing generation types.

The article states that an Organic Rankine cycle engine has an efficiency of about seventy percent. I have linked to Wikipedia, which gives a good explanation of the Organic Rankine cycle, which is typically used in waste heat recovery and biomass power plants.

RayGen’s Flagship Project

RayGen’s flagship project will be rated at 4 MW, with a storage capacity of 50 MWh. It will be used to provide power in the West Murray region.

 

New South Wales Community Projects

The article then describes a group of community projects that are being set up in New South Wales.

This is the introductory paragraph

Elsewhere in Australia, the government of New South Wales approved grants earlier this month to assist the development of seven solar projects, all but one of which will include energy storage. Notably, five out of the seven will also be community distributed energy projects, including one standalone shared battery energy storage site.

Some points from the article include.

  • The total solar power is rated at 17.2 MW.
  • The energy storage is rated at 39.2 MWh
  • One site is co-located with hydrogen electrolysis and storage,

New South Wales has certainly launched an ambitious plan.

Conclusion

I like RayGen’s system and the New South Wales initiative.

I also think, that both projects could find applications in some of the hotter places in the world.

Could solar power systems like these solve power supply problems in Africa, India and other sun-rich places>

 

 

March 26, 2020 Posted by | World | , , , , | Leave a comment

Batteries Come Of Age In Railway Construction

The title of this post is the same as that of this article on Rail Engineer.

It is very much a must-read article on the subject of constructing and repairing railways in a zero-carbon manner.

These are some extra comments of mine!

Smaller And Lighter First

This is a paragraph from the article.

Smaller and lighter equipment is getting the treatment first – the batteries and motors can be smaller. Volvo Construction Equipment has already supplied its first electric compact loader, to a customer in Germany.

Volvo seems to be busy creating electric loaders.

Size Appears To Be No Limit

This extract shows how a large dump truck can go electric.

If a 25-tonne excavator is not big enough, how about a Komatsu HD605-7 off-highway truck, which weighs 51 tonnes unladen and has a payload of 63 tonnes? Kuhn Switzerland, working with Lithium Storage and the Swiss Federal Office of Energy (SFOE), has converted this 111-tonne gross vehicle weight monster into an electric vehicle.

Out came the 23-litre, 778hp (578kW) diesel engine and in went a synchronous electric motor rated at 789hp (588kW) electric motors. An additional 120kW motor is fitted just to power the hydraulic systems. The battery was a challenge – the four large packs have a combined rating of 700kWh and weigh 4.5 tonnes.

Do you get much bigger than 111 tonne, nearly 600 kW and a 700 kWh battery pack?

Regenerative Braking

The article also says that in some applications, vehicles go up and down a route and can charge the batteries using regenerative braking on the downhill run. In one application batteries only need charging every three days.

Rail Application Of Off-Road Equipment

The article says this.

While an eDumper may be too large to use on the railway, it does show what can now be done. Between JCB’s mini-excavator and eMining’s dump truck, there is room to battery-power almost any item used on the railway today.

I would suspect that there are a lot of companies, including giants like Caterpillar, JCB, Komatsu. Volvo and others working to produce electric versions of their successful products.

What About The Workers

The article says this.

These new machines are only the tip of the ‘electric’ iceberg. As pressure mounts to cut carbon emissions and to protect workers from harmful fumes, there will be more to come.

Health and safety will lead to a big push towards electric, as electric vehicles are pollution, carbon and fume-free, with a substantial noise reduction.

Hydrogen Will Have A Part To Play

This statement is from the Wikipedia entry for ITM Power.

In March 2015 JCB made a strategic investment of £4.9M in ITM Power.

Why would a construction equipment company invest in a company, that makes equipment that generates hydrogen to power vehicles?

  • It is known, that the Bamford heir has purchased Wrightbus and intend to make hydrogen-powered buses for the world.
  • JCB have built their own diesel engines, so are they building their own hydrogen engine?
  • JCB make tractors and I believe a hydrogen-powered tractor may be more than a niche market.
  • Is it possible to build a hydrogen-powered JCB?

Buy any of these products and you get a gas station in the price.

To deliver hydrogen, all you need to do is connect it to the water and electricity mains and switch on.

If you’re using it to power rail or site construction equipment, the gas station could be on wheels, so it can be moved from site to site.

Conclusion

This is the writer’s conclusion.

It seems that ‘battery is the new diesel’. It will be fascinating to see how this sector develops over the next few years.

I don’t disagree, but would add, that I feel that JCB are the elephant in this room!

March 15, 2020 Posted by | Transport, World | , , , , , , , , , , | Leave a comment

EU Announces ‘Clean Hydrogen Alliance’ For Launch In The Summer

The total of this post is the same as this article on Euractiv.

The title is probably fairly clear, but the article is well worth a read.

March 11, 2020 Posted by | Transport, World | , , , , | Leave a comment

MAHYTEC Creates World’s First Hydrogen-Powered Riding Lawnmower

I searched for hydrogen-powered lawnmower and found this page.

Surely ideal for the Prince of Wales to buy for Camilla, when she does the mowing at Highgrove.

But seriously, if you can make a hydrogen-powered ride-on mower, you can make any number of smaller horticultural and agricultural vehicles, that run on hydrogen.

How long before John Deere or one of the big Japanese manufacturers releases a hydrogen-powered lawnmower, that takes the large grass-cutting market by storm?

It won’t be just the grass, that is green!

I suspect a company like ITM Power will provide the operator with their own hydrogen generator.

I can envisage the farm of the future, having the following.

  • Hydrogen powered tractors, loaders and other powered machinery.
  • Hydrogen-powered Range-Rover to speed through the lanes.
  • Hydrogen-powered lawn mower to make the place look good.
  • Hydrogen-powered vehicles for road use.

All would be powered by the farm’s own hydrgen generator, which might use their own wind turbine.

February 28, 2020 Posted by | World | , , , | Leave a comment