Tuesday, March 31, 2009

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VENEZUELA

Clementine's how this blog on his VENEZUELA:

I was charmed by Venezuela since my first visit 1990. I wanted to create this site to share little tricks I learned during my vacation (sometimes at my expense!) And I often wanted to know before! The site is almost exclusively built from my experiences or those of my loved ones: what we preferred, what we would have preferred to avoid ...

I like lots and lots of information and experiences.
Suerte Clementine
Hasta luego
Lawrence

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15 € Pueblo Caribe Hotel Margarita Venezuela

Promotion Hotel Pueblo Caribe Margarita
for a stay between 12/06 and 07/22/2009
double room for € 15 / Night / Person.
Located northeast of the island, on the town of El Tirano, facing the beach.
For the views of consumers TripAdvisor
Attention this price is exclusive FlyDiscount
For more information contact Laura. Enjoy your stay

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Europe-under 400 €


Flight Paris Orly Madrid -Caracas with Air Europa. 02/05/2009
Sailing, return the 16/05/09 (one day) for 349

Flight Bordeaux ParisCDG-Caracas with Air France . 03/05/2009
Sailing, return The 18/05/09 (one day) to € 379

Flight Nice or Lyon-Lisbon-Caracas With TAP. Check
on 06/05/09, returning on 17/05/09 (one day) for 349

Flight Rome-Lisbon-Caracas with APR. 03/06/2009
Sailing, returning 03/21/2009 (1 day) to € 359

Flight Brussels-Lisbon-Caracas with TAP.
Sailing 21.03.2009, returning 29/03/2009 (1 day) to € 393





For more information:


Or contact Lawrence on this blog.

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Venezuela an article in Le Figaro

Here is an article published on the website of Figaro
Title:
Venezuela, a rocky road for French companies
Renault, Alstom and Total, implemented in very the country, accumulate litigation.
France has too long ignored Latin America, recently recognized by President Sarkozy. In fact, it was eight years a Minister of Foreign Trade had not come to Caracas. On a mission to Venezuela to defend French excellence, Anne-Marie Idrac surprised at the paradox: the third foreign investor (1.7 billion), France has just 2% market share in trade (625 million dollars in 2008). The French are far behind the United States, Venezuela's largest trading partner despite the recurrent anti-imperialist discourse initiated by President Hugo Chavez. At European level, they are overtaken by Italy and Germany. During his ministerial exchanges, Idrac set the table more "contentious": Repatriation of foreign exchange for Renault, arrears payment to Alstom for the construction of the subway and the payment of compensation to Lafarge.
Three examples alone that summarize the main obstacles in Venezuela. Total Venezuela boss George Bures - 90% of French investments - speaks of "instability and unpredictability of the regime: there is never safe from a new law or tax more» . The 2007 decision to nationalize several strategic sectors like oil has led to bitter negotiations: "We got a deal because we have agreed to be repaid in oil," he says. But above the oil tanker is in a strong position. The brink of financial strangulation, the national oil PDVSA suffers from a lack of investment (production fell by one million barrels per day for ten years) and a shortage of qualified staff. "For twenty years we are present, we have demonstrated expertise and invest in the long term," says George Bures. And for good reason: Total will not let go this could oil El Dorado surpass Saudi Arabia in terms of reserves.
Lafarge has the same impact. Within the scope of nationalization adopted in June 2008, the cement is still waiting-payment of $ 300 million in compensation negotiated. Renault, meanwhile, is fighting for several months to obtain an import license. "The only way to escape the quota is to invest", explains project manager, Patrick Blain. In 2010, the manufacturer will have its assembly plant in Valencia. Growing insecurity

Another puzzle business, the currency market. CADIVI body government has a stranglehold on everything, the payment of imports as the repatriation of dividends. Hundreds of millions are stranded in the country as well. "It takes months to import at the official rate," says Jean-Louis Bourgier, International Director of Casino, French second largest investor with 300 million. "Today, more than half of our imports are purchased on the open market, thus generating more inflation. "Meddlesome bureaucracy, rampant corruption, runaway inflation ... Business leaders also complain of growing insecurity. Just the weekend Last, the capital has seen 50 homicides. To cope, companies are acquiring more and more armored cars. But then, why stay? "We earn money, recognizes the responsibility of Casino. It is a very dynamic consumer market (28 million), the American way. "The trip
Secretary of State for Foreign Trade will be allowed to settle some disputes: Alstom still has a chance to win the contract to renovate the subway in Caracas - 1.3 billion euros of investment - even though that it seemed to the Spaniards acquired. Diosdado Cabello, Minister Public Works and confidant of Chavez, "stressed the necessity of technology transfer and he clearly said he was not satisfied with the English proposal, welcomed Anne-Marie Idrac.
From our special correspondent in Caracas, Anne Cheyvialle

Monday, March 9, 2009

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pumped hydroelectric power plants for urban green electricity production


Illustration - Principle of the hydroelectric pumped underground urban proposed by Pierre Couture. It can store power and regulate changes in renewable energy, among others, and is an essential component of the electricity networks of tomorrow. (Illustration: Paul Berryman, from my book Driving without oil )

March 5, 2009, Steven Chu, the Secretary of State for Energy of the United States, outlined before a Senate committee priorities his government's research and development. Among the five sectors identified were energy storage in large scale . Storage units of appropriate size would compensate for daily variations in energy Solar and wind power, and increase the efficiency of thermal power plants. Energy storage is an essential component for reducing emissions of greenhouse gases and emissions related to electricity production.

The most currently used for large-scale storage of energy is hydroelectric pumped . In its traditional version, there are two water tanks located one above the other, linked together by an underground tunnel where a turbine that can operate in both directions. During periods of low electricity demand (eg at night) the electric motor-generator coupled to the turbine pump water from lower reservoir to the upper reservoir. In periods of high demand, we let the water run from the upper reservoir to the lower reservoir, causing the turbine and generates electricity. We call these plants also pumped storage plants. In a well designed plant, the return of water between two reservoirs causes a loss of about 20% of the stored energy.

But to regulate the daily fluctuations of wind power and solar power or to control the variations in demand throughout the day, there is no need to store more than 25% of energy . Regulation leads to a loss of only 5% of the total energy produced.

Illustration - Principle of traditional hydroelectric pumped. (Source: Swiss company GMF)

There are currently about 200 hydroelectric pumped on the planet, accounting for 90 GW of power, about 3% of installed capacity worldwide, according to ESA (Electricity Storage Association ).

The requirement to have a significant drop between the two water tanks had been told that several energy storage for pumped storage is a technology that could operate on a large scale everywhere. Witness the following statement

"Expanded use of this technology Depends on the availability of Suitable geography"

"A large-scale use of this technology depends on the availability an appropriate geography "

found in the document" National Energy Policy Recommendations of the IEEE-USA (Institute of Electrical and Electronics Engineers), dated January 15, 2009 (download HERE under Energy and Environment category).

But it seems that this statement represents a lack of imagination, because it may very well build hydroelectric pumped in the midst of vast plains or in the heart of a city. Just dig a deep well in rock and constructing galleries at the bottom to get the second tank.

is the concept that was proposed by Pierre Couture, a researcher for Hydro-Quebec and inventor of the modern motor-wheel (note from February 11, 2009). Louis-Gilles Francoeur, a journalist with Le Devoir unveiled the project in an article dated January 22, 2004 .

To avoid too large excavation for the tunnels, it is advantageous to place them in greater depth. Pierre Couture recommended digging a pit about 2 meters in diameter and three miles deep . Turbines that can be reversed and work as pumps are located on all the miles down, with a cave just behind buffer (see illustration at top of ticket).

The calculations show that to obtain a power of 1 GW for 10 hours, dig three kilometers of tunnels 20 meters x 20 meters wide (1.2 million cubic meters) to store water at the bottom. The cost of such a plant would be pumped underground in the range of $ 700 million to 1000 million, and may regulate power plants 3 to 4 GW of power.

Counting duration of the plant pumped 50 years, we come to the end at a cost below 0.2 cents / kWh of energy produced and regulated, which is only a few percent of the cost of production.

pumped hydroelectric plants can be used in multiple ways. One can, of course, increase the percentage of renewable energy by regulating their inherent fluctuations. To reduce the need for regulation, it is advantageous to implement efficient high voltage power lines to link wind farms thousands of miles, as there is always wind somewhere. The DC power lines are particularly interesting in this regard since they generate only 3% loss per 1000 km. Solar power plants, in turn, follow quite well the daily demand for electricity (more sun at noon). By placing them in desert areas will ensure a minimum of cloud cover, which require less energy storage for fluctuations. The largest part of the storage would be used to refer to the night part of the energy produced in the day.

also pumped hydroelectric plants are also useful for increasing the efficiency of thermal power . We known, for example, that natural gas-fired combined cycle can achieve an efficiency of 60%. Unfortunately we can not vary significantly from such power plants to monitor daily demand. We must use it for gas plants whose efficiency is below 40%. This shows the interest of a hydroelectric pumped would be coupled to one or more natural gas plants. We could then use the gas plants more efficient and operate at constant speed always optimal. Daily fluctuations would be borne by the Central pumped. By doing Thus, we get 50% more electricity with the same natural gas!

With the additional electricity could be shut down and recovered from coal much cleaner, waiting to close also, eventually, gas plants and replace them with renewable energy.

pumped hydroelectric plants are an essential part of any smart energy policy! And with the concept proposed by Pierre Couture underground, they will become increasingly attractive.