Herman: April 2009 Archives

Fiber Week

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This week I had the pleasure to be a speaker at the Fiber Week in Croatia, an event held for the 9th consecutive time. The beautiful surroundings and the good food were completed by interesting conversations. 

One eye-opener was the extensive use of fiber optics in schips and yachts, not only for networking but also for sensing. Continuous measuring of the stress on hulls, sensing of weight and weight distribution, sensing of fluid levels, optical gyroscopes, you name it. 

But the main topic was the extensive level of fiber-to-the-home initiatives outside of the EU including the Middle East.

Such as in Iran, starting with the enormous city of Teheran with 17 mio inhabitants. The plans are being made now, and they have the money. The government in Iran very well understands the importance of upgrading their (old) telecommunications infrastructure for their economy.
Ofcourse they want invest in the newest technology but shifting everything to IP has another advantage for them: controlling and eavesdropping communications is easier. The Saudi's have the same ambition only Fiber-to-the-Mansion creates its own challenges: 
how many fibers do you lay to a gigantic mansion? Redundant or not? How about the internal wiring, should that also be fiber?

Everybody agreed that we will be surprised when these deployments start. As Telco 2.0 already has noted: topdown technocratic/autocratic deployment of fiber is a proven succesful model. Look at Japan, Singapore, [update] Korea and recently Australia. 
It shortcircuits the haggling and lobbying of incumbents to maintain their monopolies, while they keep on delaying the investements as long as possible. As can be seen in Croatia (and other countries in the region) where DT has bought the incumbents. Tourism is a very important source of income for Croatia: close to 5 mio tourists per year visit the beautiful coastline. Many regions, municipalities and hotels have noticed that their visitors expect excellent connectivity, that it is a prime (dis-)satisfier.
To get an affordable high speed Internet connection they had to resort to alternative operators and deploying their own fiber. A big legal row started: DT claimed that had bought the conduits as well as the cables, therefore nobody else could use these conduits, blocking alternative operators. Municipalities and others protested as they had financed the civil works for the conduits. 
According to Dr Tacic (former member of parliament) DT could not show any legal proof of their position but every deployment by altnets had to face legal battles. Suddenly a proposal for a new law appeared: the biggest user of a conduit was to be made responsible for the maintenance of the conduit with the side effect of controlling access to the conduit. How convenient.

The transit at the Croatian IX was supplied by the incumbent (DT) at artificially high prices. As last one enterpreneur managed to create an alternative route via Bosnia, Slovenia and Austria. The transit prices dropped to a fifth or less. Hurray for competition!

As a result of the recent regional wars there was a lot of fiber (main trunk networks) deployed for the military (secure, no interference). All utilities also have create a fiber based network 
for themselves. The Croatian power utility is deploying gaspipes to every home, digging everywhere. So all that is needed is political will: will to use part of the conduits and slack capacity to create a good countrywide backhaul network, will to put conduits in the same trench as the gas pipes and allow all operators to use them.

This political will might appear quicker than expected: politicians complain that Croatians are now forced to send their money to Germany, instead of investing it in their own country in good infrastructure which will (to start with) improve their facilities for tourism and services business. A powerful argument in unsecure times.

The power of imagination

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What can you do with a bunch of HD projectors, some old buildings and a lot of imagination?


Anybody still wondering what we are going to do with a lot of fiber to our homes? Just remember that there are a lot of imaginative people out there dying to things that will amaze you.

(Source:BoingBoing)

Dirty

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Mobility has brought us global sourcing of goods: China as the proverbial factory churning out cheap goods that are brought to us by giant container ships. But a recent article in the Guardian reports that the hidden price of this mode of transportation is quite high. 

Confidential data from maritime industry insiders based on engine size and the quality of fuel typically used by ships and cars shows that just 15 of the world's biggest ships may now emit as much pollution as all the world's 760m cars. Low-grade ship bunker fuel (or fuel oil) has up to 2,000 times the sulphur content of diesel fuel used in US and European automobiles.
Cars driving 15,000km a year emit approximately 101 grammes of sulphur oxide gases (or SOx) in that time. The world's largest ships' diesel engines which typically operate for about 280 days a year generate roughly 5,200 tonnes of SOx.

The numbers....

The world's biggest container ships have 109,000 horsepower engines which weigh 2,300 tons.
Each ship expects to operate 24hrs a day for about 280 days a year
There are 90,000 ocean-going cargo ships
Shipping is responsible for 18-30% of all the world's nitrogen oxide (NOx) pollution and 9% of the global sulphur oxide (SOx) pollution.
One large ship can generate about 5,000 tonnes of sulphur oxide (SOx) pollution in a year
70% of all ship emissions are within 400km of land.
85% of all ship pollution is in the northern hemisphere.
Shipping is responsible for 3.5% to 4% of all climate change emissions

Small is not beautiful

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At least when you are considering windturbines or windmills. Lowtech Magazine reports about a real life test conducted in the Southwest of the Netherlands (Zeeland), a relatively windy and open area near the sea. If small windmills can perform, they must be able to do it over there. As earlier predicted the test proved that the concept of a small windmill is fundamentally flawed. Size of the rotor matters.

Close to the test site stands a (relatively) large windmill with a rotor diameter of 18 meters. It delivers 143,000 kWh per year, or an average power output of 16,324 watts. It can power 42 Dutch households. This large windmill costs only slightly more than all small windmills combined (17 percent more, to be exact, or 190,000 euro), but it delivers almost 20 times more energy. This comes down to 4,523 euro per household.
Wind power rules, but small windmills are a swindle. Bigger is, in this case, better.



Coming soon in your home theatre

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Some companies have the audacity and vision to convert their view of the future in a consistent line of products and developments. RED is such a company.
RED tries to push the boundary of digital cinema, to create products that will allow high end professional film makers to have an all-digital process flow up to the projection of the movie in a cinema. The resolution required is called 4K, or 4096 x 2160 pixels per frame. With at least 24 frames per second the amount of data one must process is staggering.
Red has created a product called Red Ray which makes the playback of 4K cinema easier. The most interesting part is the use of high-end wavelet compression technology which potentially would enable the streaming of full 4K movies over a fiber link...to your home cinema. Current available bandwidths of 100 Mbps would easily acommodate such a stream.
All it takes is Moore's law to continue for a couple of cycles, bringing the hardware costs down.

Imagine that, full 4K viewing at home....


(Source: Ars Technica)

Unexpected benefits

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There are a lot of windmills generating electricity in Denmark. 

Two Danish researchers have conducted a fascinating study on the effect of these windmills on the prices of electricity on the spot market (day trading between big producers/users of capacity). Spot market prices have a real economic effect which businesses (large consumers) do see but end-users who buy electricity at fixed prices usually do not see. The spotmarket prices indicate the real-time mismatch between demand and supply. If demand starts to exceed the base load the producers have to start up (expensive) gas-fired plants.

Their conclusion is that windmills do reduce spot market prices with a sizable amount, generating real benefits for consumers.
One should add this effect to the economic benefit of windmills. According to the researchers this effect compensates the subsidies granted to windmills if you consider it at the level of society (taxpayers/consumers).
An unexpected benefit.....

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Hot air

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David J Mackay is a professor of physics at Cambridge University (UK). Frustrated by the abundance of biased and misleading statements about sustainable energy he has put himself to the task of getting the facts and the numbers right. Debunking myths and doing the hard work of getting the numbers right. Something that fits with our philosophy....

It has led to 500 pages of facts and figures, written in an easy style. You can buy the book or download the pdf for free. Mackay has even published (most of) the book under a Creative Commons License, allowing you to re-use most of his graphs and texts.

A Herculean job, a must read for anybody who is interested in facts and figures, even when you do not agree with all his examples and conclusions. Some of them are a bit simple and do not dig deep enough, some methods of comparing energy-efficiency may lead you easily to the wrong conclusions. (Just nit-picking...).

Anyway, a major and important effort to make the facts and figures accessible for everybody.

The sound of fusion

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Nuclear fusion reactors are the holy grail of energy production. A promise of virtually waste-free, CO2-free production using relatively abundant sources. But fusing deuterium and tritium into helium requires enormous pressures and temperatures to start with. The mainstream approach is to use lasers to create the pressures and contain the superhot plasma  with strong magnetic fields. A seven-country consortium behind the International Thermonuclear Experimental Reactor, or ITER, is planning to spend $17 billion over 30 years to prove fusion power plants are commercially viable. Construction on the massive project is expected to begin this year in France.

Fortunately there are underdogs that take a different approach. The Canadian newspaper the Star reports on a few mavericks who have revived an old idea: use sound waves to create the pressure. They believe that with modern day digital controls you can manage the speed and precision required to create a spherical pressure wave with over 180 actuators.

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General Fusion's approach can be found here
At least it does not violate laws of physics as we know them.

Anyway, my sympathy is for the guys who have the audacity to leave the beaten track and think of something new. Todays crackpot may become tomorrows genius....



Impermeable

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Relatively few people read German. That is probably the reason why most newspaper outside Germany have missed the news that the Russian-Dutch scientist
Andre Konstantin Geim (photo) has received an important European price for the development of a sheet of carbon, one atom thick.

This material has amazing characteristics: it conducts heat and electricity very well, it is impermeable for all gasses and extremely strong. It is possible to make very fast switching transistors out of it. The Welt reports:

" Es kann allerdings sowohl elektrischen Strom als auch Wärme extrem gut leiten. Graphen ist härter als Diamant und außerordentlich reißfest. Wenn man beispielsweise einen Draht aus Stahl von einem Hubschrauber hochziehen lassen würde, so würde der Draht in einer Höhe von 28 Kilometern unter dem eigenen Gewicht reißen. Ein Draht aus Graphen würde es in diesem Gedankenexperiment indes auf eine Höhe von weit mehr als 1000 Kilometern bringen. Es sind diese fantastischen Eigenschaften des Graphens, die schon einige Weltraumingenieure auf die Idee gebracht haben, man könnte vielleicht aus diesem Material einen Lift von der Erde in eine Satelliten-Umlaufbahn konstruieren. Doch dies bleibt vorerst Science-fiction.

(hat tip Dirk)

One man's pirate is another man's hero

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No, this is not about the conviction of the Pirate Bay founders.


What are the origins of the Somalian pirates? 

According to the Independent the destruction of the Somali environment by illegal dumping of toxic (nuclear?) waste, possibly by Italian maffiosi. By illegal factory fishing in the Somali water, destroying the food supply of the fishermen and their families. Some of them started to get out there in small boats to prevent this: local heros. 

Now we are seeing professional gangsters, which is easy to condemn. But I find this story about the origins both easy to believe and disturbing to think about.....

Improved mistake

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As long as we keep our eyes open for the unexpected we tend to learn more from "failed" experiments than expected. Take penicilline for example.


"We were studying making hydrogen in microbial electrolysis cells and we kept getting all this methane," said Bruce E. Logan, Kappe Professor of Environmental Engineering, Penn State. "We may now understand why."
Methanogenic microorganisms do produce methane in marshes and dumps, but scientists thought that the organisms turned hydrogen or organic materials, such as acetate, into methane. However, the researchers found, while trying to produce hydrogen in microbial electrolysis cells, that their cells produced much more methane than expected.
"All the methane generation going on in nature that we have assumed is going through hydrogen may not be," said Logan. "We actually find very little hydrogen in the gas phase in nature. Perhaps where we assumed hydrogen is being made, it is not."  

The cells are about 80 percent efficient in converting electricity to methane and because they use carbon dioxide as feed stock, would be carbon neutral if the electricity comes from a non-carbon source such as solar or wind power.

Great. 
Microbes generating methane from carbondioxied when stimulated by electricity.



Import wood or electricity?

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Biomass has a large potential as a renewable source of energy. A lot of research is done on the gasification of wood, such as the biomass-to-Synthetic Natural Gas (SNG) reactor of ECN in the Netherlands. 
Gasification of wood is an old process, used for instance in the second world war to fuel cars. The research is focused on large scale (up to 1000 MW) continous gasifications plants that convert the gas to methane with the same high specifications as natural gas. Compared with the existing simple (small) gasifications reactors this is a highly sophisticated chemical processing plant.

You have to aim at these sizes if you want to replace a sizable amount of our natural gas consumption with SNG . The amount of wood needed to feed these plants is massive, millions of tons of wood per year, chopped to small chips. You have to import this wood by ship, you cannot  harvest these quantities in the Netherlands.

That raises two questions. One: transportation and chopping of wood requires energy and creates CO2 emissions (assuming diesel is burned), how is the balance? Two: why transport wood to the Netherlands, is it not cheaper/easier to generate the gas or the electricity in Finland, in the middle of the forest, and transport the endproduct to the Netherlands?

The answers are surprising.  

You can generate approx. 275 cubic meters of SNG out of  1000 kg of chopped wood. Burning this amount of natural gas equals approx. 530 kg of CO2 emissions. Using wood as a source for SNG means you do not add to the amount in the atmosphere, provided you renew the forestation. Suppose you have to use 2 liters of diesel to chop up and transport the 1000 kg. Burning these 2 litres generates 5,3 kg CO2, a ratio of 1 %. Surprisingly low.

What if you transport the gas or the electricity? Well the losses (powering compressors for gas, transmission losses for electricity) during the transportation are higher than incurred by transporting the wood. For instance, you lose several % in long high voltage transmission lines. Over there you probably cannot reuse the waste heat, which you can do when generating gas/electricity in the Netherlands close to urban areas.

So yes, it does make sense, both economically and in terms of GHG emissions to import wood from far away to the Netherlands and create gas, heat and electricity over here.

 

Flashy

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Papervision 3D is an open source real time 3 D engine for Flash. All geeks will understand ofcourse what it means but for mere mortals ? You can get a feel for it over here and here.

Nice effects, amazing how it works even with low bandwidth (< 300 kbps). 


Not so smart grids

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The online Wall Street Journal warns us of the downside of connected systems. They may be smart but at the same time more vulnerable to attacks. Apparently the U.S.grid has already been snooped by online spyware from Chinese and Russian origin. 

Cyberspies have penetrated the U.S. electrical grid and left behind software programs that could be used to disrupt the system, according to current and former national-security officials.

The spies came from China, Russia and other countries, these officials said, and were believed to be on a mission to navigate the U.S. electrical system and its controls. The intruders haven't sought to damage the power grid or other key infrastructure, but officials warned they could try during a crisis or war.

One can safely assume that the US will have done the same (if possible) to EU grids, Chinese grids and Russian grids. The latter two may not be sophisticated enough, but I would not bet on our grids to be safe....

Puma

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BoingBoing Gadgets points us to this Segway/GM collaboration prototype. Apparently it is not an Aprils fool joke....


Recycle

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Great handicraft.

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Trojan House

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Even houses can be built with hidden treasures, like this wooden house with an unexpected room for three kids extending in the air. Created in Melbourne.


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Smart protocols

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Smart Grids are seen as a major step in improving our age-old electricity grid. 
The objectives are:
-  to change the behaviour of consumers so the demand peak is reduced significantly
-  to allow for controlled feed-in of decentralized power plants/home power generation
-  to manage the growing numbers of cars that will have batteries and are hungry for electric power

Great idea but the basic prerequisite was lacking: a common communication protocol between all parties involved, preferable without Intellectual Property hindrances. Apparently every company involved dreamed of becoming the new Microsoft.....

At last the IEEE has started to pick up the gavel: a standardization committee has been formed.



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