Copenhagen, a final agreement satisfactory?

This is the end of an international summit very disappointing! How to explain the disorder in the last hours of this conference?

Take stock!

The agreements that have been decided by all countries in Copenhagen can be summarized in five key points.

The first is the limitation of the increase in the average temperature of the earth 2 degrees by 2050. How to accurately quantify this increase because even scientists do not agree on the average global temperature and the sun’s influence on the temperature of our planet?

The second is the reduction of GHG emissions but with a percentage set by each country via a written undertaking to be defined before the end of January 2010. It is good to reduce GHG emissions but no percentage has been set for industrialized countries. This is unfortunate because they are the ones that pollute the most.

The third agreement relates to the approximately $ 25 billion (for the next three years) of dollars paid for development aid from the South so that they can adapt to climate change. It is not the amount that is important but also how this money will be used.

The fourth point is about the role of deforestation in global warming. Indeed all states have recognized that forests should be better manage and maintain. Everyone knows that forests are essential to the world both in terms of reducing greenhouse gases, but also for biodiversity. Is it a groundbreaking agreement?

Finally, the coercion for non-compliance with commitments made by states shows that the Copenhagen conference a “flop”. No body or international law sets the rules in the fight against global warming. Greenpeace and other NGOs will have to fend for themselves, as before! Is this really what we want?

We will hold the top while the logical confirmed commitments but not enough to fight against global warming. While these commitments are better than nothing, but we must realize that the scale of action is not international. Every individual should be concerned about global warming because it is the individual act that we will achieve the commitments set by the summit.

Nothing changes except the weather!

Developed countries and multinational firms have slipped between the cracks. Or is it the oil industry and lobbying that control the major developed countries. To each his own opinion!

Let’s not be defeatist. The outcome for our planet seems to still be uncertain because, as our model of society will put profits before human beings, and as multinationals will control the world’s major powers, then we will go into the wall.

Act your local!

How will these commitments on a local area? Each individual, company, local authority, association will make efforts to promote a better way of life, cleaner, more in tune with nature. This is where we feel at ENVI is to concrete actions need to go. Prefer the bike to the car, prefer local produce markets to imports of foreign products (even some organic), prefer healthy and ecological homes as energy efficient homes to you to imagine your and our common future.

Do not wait any act of political leaders!

Today, it is important to find solutions heated to counter pollution and the greenhouse effect. The natural resources as solar, wind and moving water. These resources are renewable for future generations. As such, they do not produce high levels of carbon dioxide and other air pollutants.

The power turbine is used for a long time. It is produced when the wind pushes the propeller bent to the wind. The mechanism and force all the generator produces electricity. It is important to install wind turbines in strategic locations where the wind blows hard enough and regularly.

The energy solar can completely replace the heating system, but it reduces the costs of fossil fuels and nuclear. It is also possible to provide hot water for a house, and this form of energy can fill about 30 to 50% of the annual heating needs.

Energy Hydraulic comes from dams in rivers, where it forces the water to pass through the tunnels where the turbines. This is the passage of water that turns turbines and generates electricity. A very good way to avoid polluting the air.

Right now, the use of renewable energy is growing on our planet and for years to come.

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Did you know?

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- The solar panels can capture heat from solar radiation. This energy is then used to heat water or power a heating system.

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Misconceptions # 2: The solar panels have an efficiency random!

• A more powerful performance! Photovoltaic solar panels have an efficiency very high performance. Unlike other renewables such as wind power generation is much less random. The latest technological innovations have greatly improved yields. Add to this the quality of solar panels that can now claim a life of 50 years.

• This is not the rate that matters but the sun light! Whatever the region, the solar panels are cost effective. The fact that you’re opposed to Brest Marseille does not call into question the effectiveness of your installation. Profitability is indeed faster than in PACA Lille but the benefits are there in all cases. Photovoltaic solar panels produce when it is day, even in the rain!

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Everyone has experienced in summer: a simple garden hose left in the sun will provide a few liters of hot water when it is emptied. How can we improve this system?

Paint the black pipe is the first improvement. Indeed, only a black object reflects almost no light, and absorbs most of the energy to transform it into heat.

However, this stored heat will radiate in the infrared, however, to the outside of the pipe. The role of the glass can hold this energy.

Ordinary single glazing sufficient to stop the infrared radiation and keeps the heat radiation inside the sensor, while letting in visible light from the sun.

On the back of the sensor does not need to be transparent insulation (with conventional insulation) is used to conserve heat.

When solar radiation was converted into heat, it is necessary to bring that energy where it needs to be stored. It is the role of the coolant flowing through the panel. Cold at the entrance of the circuit, he gradually warms up in the panel, and the sensor output, it can dissipate the heat to where it should be used (example: solar water heating, solar pool).

The first application of solar thermal is using it to get hot water. Easy to implement with a moderate investment and work, the solar water heater allows many homes of our planet to significantly reduce their heating needs and to cover nearly 70% use hot water. For passive houses, it is even possible to meet 100% of its needs!

Sandstorm in Beijing

That was in March 2000.

The day seemed not to have to get up
You could tell just people and cars. Like a postcard, cottony fog was so dense that the streetlights were surrounded by a sleeve of scattered light halo.

Could it be rain, so rare in Beijing, this season? The sky was, early in the day, black and low. The lamps were all lit houses in broad daylight. An impression of the end of the world or disaster.

I just had to get out.

The wind prevented me from moving forward, pulled me back: I was walking stooped, struggling against the wind, the tousled hair and the coat tails flew. But soon I had a taste of sand in the mouth, rasping and drying, then I felt it was full of grain and try to spit no difference. The wind stung me, my cheeks scratched, not by her coldness, but by the thousands of particles he was carrying.

Gradually I had terrible eye blink, the eyelids to keep fighting to try to see, despite what entered my sand into the eyes crying in irritation. But I felt as he entered his neck and all the spaces where he could crawl, I made quick U-turn, went home and took a shower: the amount of sand left in the tub was frightening, as if I had been rolled by a huge wave.

I stood behind the windows in my apartment on the 9th floor to see what seemed like a fantasy, a vision, a dream.

I lived, not far from Tiananmen Square, along the Chang’an Avenue, a long boulevard running through, changing its name several times, Beijing from east to west, usually I arrived to have a great perspective, the You Yi shandian, the store of friendship, to the tower Anderson and even a little further in the direction of the famous.

But at that time, the area was much reduced. Gradually disappeared cars on the boulevard, buildings across the avenue, as covered by the wind and wrapped in a sheet of gauze yellow, removing any hazardous since their visibility. The whole city, where we might place his eyes, was concealed behind a thick curtain yellow. Beijing, city yellow-orange, the color of a blazing sunset, as rendered dull and somewhat burnished by the sand carried along. The yellow wind blew, the city transformed into a fantastic mirage. Sometimes the curtain, without tearing, is finer: it entraperçoit human shadows move, disappear, become clearer and melt or dissolve into dust.

Of course I had already experienced some sandstorms Beijing. Dusty wind, gray, you are a gauze of dust, you blind, itchy and feeds you despite your mouth shut or you and bites you blind eyes behind the glasses. It’s stifling, unable to breathe, the air you oppressive, as in a poorly controlled apnea. Taking advantage of thinning is running to take refuge in a shelter of some kind, shaking himself, while taking breath. If it is then by bike, you have to go because we do not keep the whole balance. The wind is so powerful that it almost forced to make on-site, or worse pulls you back.

With time, I was like the Chinese and surrounded myself the head and face of a muslin tied around the neck, turned into a full hood behind which I was trying to protect my nose, my eyes and ears of the sand and dust intrusive because its extreme fineness may, of course, attack the respiratory system. The storm passed, we shook the dust to drop and we tried to go back to cycling. The gusts of sand, without being short, did not last long. Even inside the house is no exception to these storms because the sand rushes through the smallest gaps in windows or doors and all the parts overlap, too, with a film of sand.

But that day, the dark yellow light over the city most of the day. The wind from Siberia and Mongolia, less arrested by the forest cut ravaged Beijing and shows that the desert is at its gates. One gets the impression of a vision from another world.
The last severe storm of yellow sand blown by the wind of Mongolia took place between mid-Mars2002. She left some 26. 0000tonnes sand and dust on Beijing! It was, according to experts to study dust storms, more violent. Inner Mongolia visibility was reduced to less than one meter. And recognize that there is no way to reduce or stop in the future, such as storms, if not industry practice to reconsider the northern regions that support them and to plant more trees.

Already, in recent years it has created a “green belt” around the capital, with the participation also of Voskwagen, belt, we want to thicken to make Beijing “green city” in 2008. In Beijing, nothing was visible within 100 yards. Even the palace of the people were drowned in the dust, like the huge portrait of Mao, yet colossal dimensions.

Two main economic alternatives available to us, CFLs already widespread, and LED lamps, more efficient and much cheaper still.

Two lighting modes with very different technologies, which have yet to prove themselves.

The CFL as its name suggests works the same way as fluorescent tubes, and are more compact. These bulbs are unique to a certain time after ignition to reach their optimum level of lighting. She resent the repeated switching on and off can significantly reduce their lifetimes.

The LED lamp is made ​​up alone of several LEDs (Light Emitting Diode), which until recently served only indicator lights on all types of aircraft.
Important advances have helped make it real light sources . Very small and economical, they are best suited to places where the brightness can be reduced as traffic, or light may then replaces the halogen bulbs, many more consumers.

The major drawback of these two technologies, the price. It will take that may be manufactured in larger quantities and processes are optimized so that their prices fall.