The Anonymous Widower

ANALYSIS: Managing Our Earthworks – The Task Gets Harder Each Year

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

The on line article is only an introduction and just a taster, of what will be fully available in the magazine.

But it does look to be a serious account of the problems about keeping the railway safe in all this bad weather.

I shall be interested to read the full article, when the magazine hits my door-mat.

August 25, 2020 Posted by | Transport | , | Leave a comment

Artificial Leaves Make Green Energy With Just Water, Sunlight And CO2

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

The title says it all and the scientists behind the technology are from the Chemistry Department at Cambridge University.

August 25, 2020 Posted by | Energy | , | Leave a comment

Solving The Problem With Electric Bus Design

The title of this post, is the same as that of this article on Electric & Hybrid Vehicle Technology International.

The article opens with this paragraph.

A number of European cities have committed to securing only zero-emission buses by 2025. However, to achieve this objective, manufacturers must make bold design choices, radically changing bus componentry, systems, and bodywork. Here, it looks at the debate for greater electric bus design standardization.

Standardisation is one thing, but the article doesn’t talk about the major problem with electric bus design – For many countries like the UK, Hong Kong, Singapore and Germany, where there are lots of double-decker or articulated high-capacity buses, battery electric buses are just not big enough.

Battery-electric buses are also generally not big enough to compete with the latest designs of tram and metro systems.

These pictures show the Chinese double-deck electric double-deck buses, that ran in London.

Half of the downstairs was take up by batteries.

Where are they now?

The Belgian firm; Van Hool have a product called Exquicity. This video shows them working in Pau in France.

But these buses are powered by hydrogen.

Similar buses running in Belfast are diesel-electric.

In both the Pau and Belfast applications, I wonderwhy they didn’t use trolley-bus versions of the WxquiCity or conventional trams.

Conclusion

Until we get more efficient battery storage, electric buses will have difficulty competing economically in the high-capacity bus sector.

August 25, 2020 Posted by | Transport | , , , | 8 Comments

New Energy Storage “Water Battery” Breakthrough: Look Ma, No Underground Powerhouse

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

Pumped hydro storage as used at Dinorwig power station or Electric Mountain in the UK is a good way to store electricity.

But it is expensive to build and one of the major costs is building a large underground powerhouse. This is Wikipedia’s description of the construction of the powerhouse at Dinorwig.

Twelve million tonnes (12,000,000 long tons; 13,000,000 short tons) of rock had to be moved from inside the mountain, creating tunnels wide enough for two lorries to pass comfortably and an enormous cavern 51 metres (167 ft) tall, 180 metres (590 ft) long, and 23 metres (75 ft) wide[10] known as “the concert hall”. The power station comprises 16 kilometres (9.9 mi) of tunnels, one million tons of concrete, 200,000 tons of cement and 4,500 tons of steel.

That is big, but on the other hand, it reportedly paid for itself in two years.

According to the article, a company called Obermeyer Hydro Inc has come up with a new design of pumped storage turbine., which eliminated the need for an underground powerhouse.

  • Cost savings of 45 % are claimed.
  • Reading the full article, I get the impression, that a radical redesign of the reversible turbine will be a game-changer.
  • I suspect, it could be of benefit in small countries like the UK, where pumped storage is expensive and faces strong opposition in certain areas.

It is also significant, that this appears to be successful innovation in an area, where it was thought we had reached the ultimate design.

 

August 25, 2020 Posted by | Energy, Energy Storage | , , | Leave a comment