April 2009 Archives
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 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
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.
Get your favorite book, cd, dvd or game, and get rid of old stuff you don't use anymore. On Swaptree you can list all the items you have (and want to trade), and all the items you want to have. Swaptree creates trades by matching items that you have with other people who want those items, and vice-versa. To establish a succesful trade there are often more than 2 people involved (A gets an item from B and gives one to C, B gives one to A and recieves one from C). The only thing you pay for is shipping the item but you can even print the postage from their site, which they charge monthly on your credit card. If you want they will try to establish a trade near your home, so you can trade personally. A great way to get what you want, and a nice contribution to recycling. Swaptree is available only to residents in the U.S. but they are expanding...
" 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.
"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.
Do they address an organic language, as the architects claim, or do they look more like the Cylon Centurions from Battlestar Galactica or the Tripods from War of the Worlds?
Apart from that it turns out there are a lot of different pylons I never saw, but never as graceful as this design.
World Car of the Year has announced that te winner of the 2009 World Green Car Award is the Honda FCX Clarity. Jurors felt that "The FCX clarity is an utterly real, hydrogen-fuelled luxury sedan that provides the amenities people expect in a premium car with 430 km range, fuel consumption of about 3.3 litres/100 km (72 mpg US) equivalent and zero tailpipe emissions. While there is only so much the automotive industry can do when it comes to this technology - governments need to come onboard to help create a true refuelling infrastructure - Honda must be credited for taking a bold step in leasing FCX Clarity to customers in California for US$600 per month. There's still a long way to go before fuel-cell cars will become a commercial success, but hats off to Honda for continuing to advance this expensive technology during a time when every cent counts.."
Now we know that this is just marketing speak, but I do like the $600 lease. As a customer who is in to some adventure, you can get it without too big of a financial risk. Shouldn't governments facilitate this? Thedailygreen also drove the car and is quite positive. However, they conclude with the so true statement: "If the car itself were the only factor, the FCX Clarity would be in showrooms now. But hydrogen costs approximately $10 a gallon equivalent to make, and we're nowhere near having an affordable production plan for these vehicles." Nevertheless, I think we should definitely start using them. Now.
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.
Om Malik, in his GigaOM blog, has an interesting article on technology start-ups in Switzerland near Zurich. He claims that one of the reasons that companies from Switzerland are successful on a global scale is that they come from a small country with four languages, which naturally forces them to think multilingual and outside of their own country. An interesting observation.




















