Thursday, May 5, 2011

How Much Is Refrigeration Repair

claims excesses of renewable .... If Spain


I've been reading an interesting article which I believe is 2010.
The curious thing about this article is that renewables have covered 30% of English energy demand, by a confluence of improved environmental conditions and lowering of the crisis. The funny thing is that we talk about the problems of excessive energy production.
turns out that there are moments of sunshine and other storms in which the problem is where to send output. For now the problem I just discovered is that renewables (excluding hydropower) can not be regulated as do the thermal , and nuclear. Suddenly a sunny day the network can send a huge amount of energy, like a storm.
For this reason in 2010 had to be off 37% of wind turbines, and also have caps on solar power generation, as in periods of high solar radiation is simply no where to send the power generated. Says the article

Photovoltaics also creates difficulties for the network. "We do not know how much they produce in real time, so we have beyond our control a power that exceeds the three nuclear"
One of the solutions is that electric cars can absorb that energy when charging their batteries overnight .
Well, I wonder what is more profitable because:
To build nuclear plants or to improve the electricity infrastructure to send the surplus to other countries during peak hours? Or make storage systems or ecological use.
A good storage system is to use the surplus for the production of hydrogen, or any other system that requires energy and send that energy to desalination plants ...
I mean systems that are considered expensive and therefore inefficient could absorb the expected excess energy production to be produced when more and more individuals and companies to stop producing and instead provides energy to the grid.
A country with enough companies and households self-sufficient and connected to the network, completely change the forecasts. Spain can reach 40% renewables by 2020 without the auto supply. Do not forget that only households represent between 30% and 40%, if you subtract that from the consumption and production put it as you will see that the real problem may be excess energy. And that much more difficult
the discourse of expensive energy, the need for nuclear, overuse of fossil fuels ... Article

Let
In the months of January and February have produced renewable 30% of the electricity consumed in Spain, according to Red Electrica of Spain, the company that manages the system.

eight years ago, think about getting 30% of electricity from renewable sources sounded utopian. However, in the months of January and February, with good rain and wind, and less demand than in previous years by the crisis have produced renewable 30% of the electricity consumed in Spain, according to Red Electrica of Spain the company that manages the system. This means that the country meets the target of 29.4% that the EU established in 2001 to 2010.

On 16 January a U.S. president put Spain as an example. It was Barack Obama who, when he announced his plan for clean energy, said that his country would not be left behind. "Spain Germany or Japan invest and are prepared to take leadership in this new industry, "he said. In the U.S., 10% of electricity is renewable, while in the United Kingdom does not exceed 5%. In Spain, in 2008, wind and hydropower generated 18% of the total.

There are several factors that explain the data, as the drop in electricity demand by the crisis: 2.9% lower in January compared to the same month of 2008 , and 9.8% lower in February, but last year this month had one more day. This decline makes the emergence of the installed power for a decade. This means that if Mills were set for years but the percentage of energy clean up slowly because the total demand increased again, now the situation has reversed. In addition, the increased rainfall has been that there is more hydropower 126.47% between January and March 6 in the same period last year. The hydraulic assumed in February to 15.6% in February and 15.8% wind power.

Chief Electrical operation, Miguel Duvisón, said yesterday that the first two months of the year the conditions have been ideal, but it is not a cyclical data: "Although down somewhat over the coming months, the Renewable not walk away from current levels and the total of the year will closer to 30% to 20%. "spring is expected to maintain the percentage if the rains continue even ease somewhat in the summer.

Last Thursday, the wind broke the record again. At 11.10, 29% of electricity demand came from the windmills (with 74.5% of wind power in operation). That morning, the wind for several hours covered 40% of electricity generation. Spain-a country with more breaches of EU environmental policy-Met and for the first time for a significant period with the goal of renewable Brussels.

To this we must add that this year the solar energy will begin to be significant due to the boom experienced by the sector until last September Industry root cut it to put a stop to the facility. "On sunny days in Spain this summer, the PV can reach 5% of production," says Heikki Bureau, responsible for climate change WWF Spain.

renewable
But so also generates problems. The morning of Sunday November 2, 2008, Red Eléctrica disconnected 37% of the mills because they could not absorb all the electricity they produced. Spain suffered a great time, and at that time there was sufficient demand. The situation was not new, but never had wasted so much clean energy.

Electrical has a pioneering system to control at all times and manage the wind power windmills off areas if necessary.

Duvisón says the system also needs more interconnections with France to export electricity at the times and import it on when necessary as exchange capacity is 3%. Reversible dams are also required to pump water uphill when on production and recover something when missing. And in the medium term, the Government wants a million electric cars by night store of renewable electricity.

Wind Energy Association points out that in 2008 the mills avoided fossil fuel imports 1,200 million, generated 40,000 jobs and avoided the emission of 20 million tons of CO2 (5% than it emits Spain).

Photovoltaics also creates difficulties for the network. "We do not know how much they produce in real time, so we have beyond our control a power that exceeds the three nuclear" laments Duvisón. Power Grid has asked the Government solar farms that send their output at all times, as he begins to notice that sunny days there is a gap between planned and actual demand, when the solar panels are launching the massive quantities of electricity network without it being planned .

The drop in electricity demand by the crisis brings to light the focus on renewable years, involving 3,800 million in premiums a year, and put Spain into the path of the target of 40% green electricity 2020 set by the EU.

Source: Elpais.com -
http://www.buscalogratis.com/ecologia-un-tercio-electricidad-origen-renovable-en-espana.htm

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