sabato 26 luglio 2008
Power 944 KW already in the grid of the country fotovoltaikos station company Sunergy in Pontoirakleia of Kilkis.
It is the largest installation of solar energy in Greece to be put into operation an even greater station in Dei Megalopolis in 2009.
The unit of Synergy, which will be inaugurated officially in September, built by the German Phoenix Solar, with headquarters in Munich, which is a market leader in photovoltaic systems technology and is also active in Spain, Italy, Singapore and Australia.
The station became operational in a critical period, as demand in the summer months is high, but stocks in the reservoirs of hydroelectric plants are very low.
The Sunergy SA, based in Thessaloniki, is among the first in Greece have submitted applications for the construction of photovoltaic parks on a large scale, with a total force of more than 5.700 KW.
Ongoing talks are the Sunergy with investors for the construction of new parks total photovoltaic effect 15.000 KW.
mercoledì 23 luglio 2008
As fuel prices soar to record highs and airlines struggle to maintain profitability, the unglamorous but fuel-efficient turboprop regional airliner is making a remarkable comeback.
The revival of the propeller-driven planes — which typically consume a quarter to a third less fuel than equivalent jets — marks a significant new trend in the industry. Until recently, many commuter airlines had been determined to consign the planes to history and convert to all-jet fleets, which offer greater passenger comfort.
Although the latest generation of turboprops has addressed some of the comfort issues by flying above turbulence and providing quieter cabins, analysts say the airlines' money worries about their bottom line now outweigh any passenger preferences.
With jet fuel prices 60 percent to 70 percent higher than a year ago, regional jets no longer offer good economics for short-haul flights, said Michael Dyment, an aviation analyst at Nexa Capital Partners, a Washington, D.C., corporate finance group.
"Nowadays, operating efficiency trumps any passenger considerations," Dyment said.
The world's remaining manufacturers of turboprops for commuter airlines, Canada's Bombardier and France's ATR, have ramped up production to 140 of the planes this year, after making 100 deliveries in 2007. This compares with only 26 in 2002.
Reversal of anti-turboprop trend
"There has been a clear reversal of trends in the regional airline business over the past three to four years," said Richard Maslem, an editor of Airliner World, a British trade magazine. "Airlines that only a short time ago were championing the cause for the regional jet and suggesting the end of the line for turboprop models are now having to eat their words."
The regional sector as a whole experienced something of a boom, with traffic growth estimated at almost 8 percent in 2007, ranging from 3.1 percent in the U.S. to more than 9 percent in China.
While jets such as the Embraer E-series still topped the delivery list, the upsurge was led by turboprops, which accumulated 210 orders from clients worldwide.
The 1950s-era Fokker 27 was typical of the first generation of short-haul airliners with gas turbine engines driving propellers, which acquired a reputation for fuel economy and ruggedness.
Passengers, however, hated the propeller noise, vibrating cabins and susceptibility to turbulence at low altitudes.
As the next generation was entering service in the 1980s, many feeder airlines favored speedier and quieter 30- to 70-seat jets, such as those produced by Brazil's Embraer. This sparked predictions that they would eventually replace the turboprops.
By the beginning of the millennium, several turboprop manufacturers — including Fokker and Saab — had either declared bankruptcy or abandoned production of turboprops, leaving Bombardier ATR as the only major turboprop manufacturer.
The need to cut costs
But tight economic times have revived demand for the propeller craft over the past couple of years. A recent report by the market research firm Forecast International attributed this to the need by regional airlines to cut costs and reduce fares in the face of competition from low-fare carriers.
Jet fuel now averages US$3.70 (euro2.40) a gallon (for 3.8 liters) in the U.S. — nearly double the price a year ago. Local airlines, which generally are run on very slim margins, already routinely resort to fuel-saving measures such as taxiing out on a single engine and coasting to landings by idling the engines.
With market interest growing, Bombardier is evaluating lengthening its existing 78-seat Q-400 to 90 seats, and its French rival is considering launching a totally new aircraft rather than extend its existing 70-seat ATR-72.
The new models would also have advanced noise and vibration suppression systems and would fly at higher cruising altitudes than their forerunners, offering in-flight comfort levels comparable to jets.
The stakes are high for both companies, because analysts predict a requirement of nearly 1,500 regional aircraft from 2007 through 2016 to keep up with projected demand.
Comfort and cost-efficiency
"What has happened with new-generation turboprops is on short flights and with a smaller capacity they can open up or sustain markets that jets cannot. So you get the best of both worlds — comfort for passengers and financial viability for the airline operator because of the 30 percent lower per seat costs," said John Strickland, director of JLS Consulting, a London-based aviation consultancy firm.
Strickland also pointed to the widening use of turboprops among partner subsidiaries of such companies as Lufthansa, Alaska Air, Air France and Quantas, where they feed traffic to the carriers' jet routes.
Luxembourg's airline Luxair typifies the turnaround.
In 2000, the carrier decided to discontinue the turboprop fleet it had operated since the 1950s and replace it with commuter jets. But as fuel prices skyrocketed, the airline turned to the more economical propeller models, and placed orders in 2006 for a fleet of new Q-400s.
Among other orders in recent weeks:
* Seattle-based Horizon Air, a subsidiary of Alaska Air Group Inc., ordered 15 of the Q-400 turboprops from Bombardier, with options for 20 more, in a deal worth nearly US$400 million.
* SAS, the joint flag carrier of Sweden, Norway and Denmark, reversed its decision to discard its fleet of Q-400s after a series of landing gear incidents. Instead, it reached a compensation agreement with the planemaker that included orders for 27 new aircraft of an improved model with options for 24 more — a potential value of US$1.75 billion.
With energy from the sun will cover from the summer of 2009 their needs in electrical 7,000 households in Arcadia. It is in accordance with the DEI, the first of the 28 thousand households will be powered by solar energy through photovoltaic park Megalopolis.
As write News on Monday, the park force 50 M W aspires to be the second largest in Europe and the company DEI Renewable, a subsidiary of DEI, will launch the relevant competition in the autumn so no later than early 2009 to begin the placement of the first panel.
If all goes well, until next summer will have been installed, according to estimates of DEI, a total of 10-11 M W, power able to cover first phase needs 7,000 local customers.
The park will be at least 400 meters beyond the city draft of Megalopolis, which has raised reactions from residents and agencies portion of the region, who fear an increase both visual nuisance and radiation because of mirroring of the panel.
As, however, supports the PPC, there will be no line of sight of residents with a location of the park, because of topography, and is at elevation difference of 30 metres from the city and separated by park 300 acres.
The already-developed trees in the park, but also a new battery that will planted in the northern limit of the establishment of the park, will make it, always at DEI, it impossible to contact the city of Megalopolis.
venerdì 18 luglio 2008
A voluntary initiative to raise environmental awareness through artistic creation undertake to carry out 73 artists and scientists. The team of Green Project (GP) will start from Athens to reach Beijing.
The initiative called «Green Project: Athens 2008-Beijing from the streets of silk on the streets of energy» and relates to a green pilgrimage 73 scientists and artists 11,121 kilometres.
To address the gap Athens-Beijing will use technology vehicles limiting emissions of carbon dioxide.
In the traces of «Silk Road» crew GP will look for the symbolic path bounded today by the trade of energy aiming to highlight bioclimatic architecture and development of renewable energy, building on the art of photography, painting, architecture , Video art, documentaries.
The initiative under the auspices of the Ministry of Culture and the Municipality of Athens, and has the support of the Office of the European Parliament in Greece, the chairman of the House and the Energy Regulatory Authority of Greece.
sabato 12 luglio 2008
Researchers of MIT developed a line of transparent plastic filters that can double the attribution of current photovoltaic systems, or be placed on windows for the production of electric energy.
The filters, that are presented Friday in periodical Science, contain colouring substances that absorb light and send it to utmost the plastic leaf, round which they are found placed by photovoltaic elements.
The new technology could become commercial available in three years. The researchers appreciate in deed that the filters could [epistrothoyn] in big glass buildings and change him thus in stations of production of energy.
Colouring the filters they leave the 10% of solar radiation to pass, so that are litted up the internal spaces of buildings, while the rest is absorbed by photovoltaic elements in the frames of glass panes.
The organic molecules colouring absorb the photons of solar radiation and emit again him in different length of wave. These photons are moved afterwards in the interior of plastic and reach up to utmost his.
Apart from the windows, the new system could be placed above the solar collectors so that it develops the photons that are lost. This approach would increase the output of current photovoltaic systems at 90%, appreciates the team of Dr Marc Baldo.
The idea had been proposed initially the decade 1970, later however was abandoned because big part of energy of photons was lost as heat front it reaches in utmost the plastic leaves.
lunedì 26 maggio 2008
Nissan and Renault unveiled a prototype for an all-electric car in israel (may 11). Also Nissan declared thatwould mass-market a similar model in the U.S. and Japan by 20010.
Gm will complete its' gas-electric hybrid, called Chevrolet Volt, by 2012..
Are we really near to a major step in cars??
Some problems remain..
The cost of batteries is still high and it seems they aren't fit for long commutes. But this last one could be resolved by rethinking the "refueling" procedure..
Also we must think the electricity for charging where it comes from..nuclear? Coal? This could just move the problem..
But one country thought of a solution! Denmark, which is working with Nissan and Renault to market electric vehicles, plans to use its wind turbines to fuel its transportation revolution!!
Do you think this could actually work? Lets see what will happen ;)
martedì 20 maggio 2008
martedì 12 febbraio 2008
Building Mansar City is starting today and the plan will be completed at 2015. It will cost 22 billinos us dollars circa. The design was made from Foster & Parten
Its 50 thousand citizens will use tram trasportation and othe automated means of transport. Instead of skyscrapers of Abu Dabi, Mansar city will have low buildings with solar panels on the roofs.
Desert offers optimal contitions but in the Emirates only parkmeters use solar energy.
The city will be built near the sea and a wall will protect her from warm wind coming from the sesert and the airport landstrip from Abu Dabi.
Emirates have petrol for at least 150 years more, but instead acting like other countries producing it, emirates seek to modify their economy so to reduce their depency from petrol.
Mansar City is a part of an ambitious plan of the government that started on 2006.
Let's see if someone else follows theis path ^_^'
domenica 3 febbraio 2008
An Airbus 380, bigest civilian aircraft, did an experimental flight from Britain to france using a sinthetic fuel that is being produced from natural gas and it is considered more "clean" from conventional fuel!!
This Airbus had the sign " more green, more clean, more quiet, more clever" and did the flight from bristol to tuluze, where the main factory is.
Three of the engines where using conventional fuel and the fourth used GLT (Gas to Liquid) which is a sinthetic fuel from shell.
The test was made after agreement from Shell, Airbus, Rolls Royce and Qatar Airways. Qatar in fact is preparing a site that will produce GLT and Qatar Airways is hoping to became the first airline to use this fuel.
Airbus plans incude some testing using biofuels until 2009.
Travelling with just 50 euros across europe is a great thing confronting with prices of traditional airlines...but there's a catch.
All these flight have impact, a big one in our skies. The success of low-cost airlines threatens to ruin all European efforts to reduce greenhouse gas emissions. Consequently, the call for an EU-wide tax on aeroplane fuel is getting louder. Probably this isn't a great solution...
People will and must continue to travel across this continent so just putting a tax to collect money or to "advise" not to travel isn'r so great, instead of searching other solutions, like other fuels or easier other means of trasportation..
So, can flight become more greener, more ecological friendly?
I admit myself used several times lowcost flight, paid little and had fun, but....what is the real price actually?
Also...the airlines woo customers away from alternative forms of transport – according to one survey, a third of Ryanair’s customers (the biggest low-cost airline) have switched from car or train because of the low prices. The budget airlines have created a completely new mass market. A two day shopping trip to London and a relaxing weekend in Mallorca would remain a luxury few could afford without Ryanair and Co.