Monday, November 19, 2007

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Agriculture and energy.

instead of oil you can use biodiesel, which is vegetable oil opportunamante Treaty. Any engine can use vegetable oil directly. How much do you need? Need to travel about 10,000 km. 1000 liters of petrol, diesel or oil. It depends a bit 'out of the car, but as a key indicator that it's okay. To make 1000 liters of oil it is necessary to be optimistic about one hectare (1.5 acres when it comes to oil sunflower seeds). If we think it takes about 30 million motorists. 30 million hectares. It is a square of 548 km on each side! But we must also think about going to produce oil for the trucks, power plants, heating, etc..! It 's a size impossible. As a minimum we should look for land abroad, in Africa, Asia or South America. As in reality they are doing German, American, Dutch, French, English ... even the Norwegians, who are few and that oil in the North Sea we have!

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hydrogen. The dance of the century!

Hydrogen Cars! Why does not pollute! Already ... Though.
first point. The combustion of hydrogen produces no carbon dioxide (a greenhouse gas). However, produces more smog, caused by oxides of nitrogen. The production of these gases is linked to all the high-temperature combustion and is caused by the reaction of nitrogen from the air. The air is in fact made up mostly of nitrogen (80%). You could however say that hydrogen can be reacted at a low temperature fuel cells with the famous. This is true in which case it would be really free of emissions. There is' however be noted that fuel cells using other less hazardous substances, including phosphoric acid.
second point. But hydrogen to put in the tank where it is? I do not think there are mines. Sure, it might be pulled from the water, but the energy that is needed is greater than that obtained and therefore it is not convenient. Another strategy is the so-called reforming of methane, which is to make it burn with little air. Thus forming hydrogen and carbon monoxide (very poisonous!). Then he adds steam and carbon monoxide is transformed into hydrogen and carbon dioxide. Yield: 65%. Hydrogen fuel cell in a yield of 60%. Overall, it is as if the original was used with methane yield by 36%, then that is the performance of a small generator to natural gas. In short, many laps do not get any benefit!
So why talk about it? Because if there was demand for hydrogen could use nuclear energy, the power plant. At night, in fact, today we do not know where to put it. Tomorrow you might think of using it to convert methane into hydrogen, and so would fail one of the biggest obstacles to the spread of nuclear plants. In short, the hydrogen car is the red herring that would allow development of a nuclear-related economic interests.

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How much electricity?

To produce it should be:
- a plant;
- the fuel.
We talk about the fuel. For a kWh should be approx. 200 g of oil or 1 kg of firewood. The oil, if it costs $ 90 per barrel (approx. 150 kg), translated into euro is € 62 per barrel ($ 1.45 per euro). But when there was parity ($ 1 = € 1) it cost approx. 40! then increased by 50%, not 150% as seems to be working in $! Really has not grown much oil, but simply has devalued the dollar too! Meanwhile, the uranium is increased 2000% (yes, the deumila percent .. that is twenty times!).
Back to the accounts. The oil costs about then. € 0.4 / kg. And since it takes 200 grams to make 1 kWh, the cost of oil is approx. 8 cents per kWh. The fact that electricity costs! All over the world! All the rest are taxes, but they are not the same all over the world!
And how much wood? About 30 € per quintal. So with the wood 1 kWh costs 30 cents! much more! Cost as much as € 10 per quintal is not worth it, because even a wood-fired plant costs more than an oil-fired!
So should the oil? Maybe yes. If you are against the oil for environmental reasons, dependency from abroad and resource depletion. They are much more important reasons of cost! But I will not be said that economic reasons are to the detriment of oil!

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kW and kWh in PV.

But how does a solar panel? With 8 square meters can install panels for a power of approx. 1 kW. If you need space to avoid shadowing them or keep them well oriented toward the sun, we need a larger area (2-3 times). What do you mean a power of 1 kW? It means that if the sun was always there, at the peak, would 1 kWh per hour. But as the sun at night there 'and it is not ever expected to peak, 1 kW produces only 1200 kWh in 1500 to almost north and south. If consumption
3000 kWh per year (see the bills) I need 2 to 2.5 kW (16-20 sqm). If I use 9000, I need 6 to 7.5 kW of panels. It does not matter if my contract is 3 or 4.5 kW. The contract only says that the 3 kW ENEL gives me a maximum of 3 kWh per hour, but is not that I'm always at maximum consumption!
How much does a system of 1 kW? ca. 5000 €. How much does a kWh of electricity? Maybe 30 cents. So if I produce with 5000 € from 1200 to 1500 kWh per year, corresponding to 360-450 € / year ...

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kw and kwh kilowatt kilowatt-hour ... Mysteries?

No, not mysteries, although even the experts do not know what you speak. The kW is a measure of power, a measure kWh of energy. This is so as before. We associations. For example, it says the speed of a car and km-h path. A car does not stop quickly if kept km. So is the kW: they indicate how much energy (kwh) can give an hour, but if we do not shut down (produces or absorbs) kWh. A power of 50 kW at the maximum is 50 kWh per hour. If off is 0 kWh. If the rule in half, remains a power of 50 kW, but produces 25 kWh per hour. In Italy
plants have a total capacity of 50-60 million kW. It does not mean that they produce 50-60 million kWh per hour, why not go to the central or most, or have failed, or - sometimes - are off.
As is the case for your system riscaldamenento, and summer is off: kWh production (or calories ... is the same thing as the miles and miles!) = 0. But the power plant is the same as in the winter!
But what do we pay? When we buy we pay kW plant, the power, like a car. When we pay for the kWh, because the more you want and need more fuel.

Wednesday, November 14, 2007

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ENEA changes our lives! or not?

ENEA is a bottomless pit. You say it is like Alitalia, but with an aggravating factor. Alitalia, for better or worse, we realize it. Desperate, when it is not placed on low cost, or when paying office, maybe we decide at the end (always reluctantly!) To take their plane. But
ENEA? Should deal with energy renewable. Since you do not make any more nuclear power. It seems crazy to entrust the same structure as renewable energy, as that concept is the opposite of nuclear power. But so do we! Then, there are at ENEA researchers working on renewable energy. Have any of you ever seen any of their invention? someone has noticed their existence?

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Rubbia and the invention of the solar heat.

We missed a Nobel prize was attacked! But I just can not help it. In 1980 the university was doing. Like all engineering students had to take examination of Technical Physics a paper. How many tried to make the solar thermal. Results: Using the sun's heat to produce electricity, with famous parables or other systems costing more imaginative at least 10 times more than the usual systems (oil or gas). It also takes incredible extension of land. But after 25 years maybe Rubbia has invented something new? No. He just decided to keep the heat for use at night, when there is no 'the sun. But at night, as mentioned in other blogs, electricity costs very little! Thus the energy ends up costing even more! Nobody in the government or the RAI is able to make 2 accounts? No one knows an engineering student (3.o years) who can help? Rubbia Why not publish a simple blog with accounts of what he has in mind to do? But Rubbia
is heard Governments of many! Because there is telegenic. So, either he or the CarrĂ  have the same effect of creating sympathy. And for politicians, devoid of ideas, is the only way to stay afloat.

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Who governs the energy? Photovoltaic

Few people know that the Italian government does not govern the energy. The laws are only the consequence of decisions taken elsewhere. Where?
World Bank. With criteria beyond, since no one is ever going to vote for the leaders of this organization!
EIB (European Investment Bank). It goes a bit 'to the other trailer, but it is a leading maker? Who knows who directs? (Not me!)
European Commission. But this the vote! No. False. We vote for the MEPs. The members of the European Commission will not vote for us, but are offered by governments ( that caste, guys!).
USA and Germany. They are able to influence the Italian choices on energy. Mainly the Germans. They are extremely intelligent and they use to do so. At first do more to promote alternative energy in Germany (wind, solar, biodiesel). While we discuss the usual stupid things (stadiums, Romanian, say, 58 or 60 years ...) their industries are starting to churn out solar panels, biodiesel and wind power for their needs. Then, when they are well developed, reduce hoarding, forcing their businesses to create new markets. But the accompanying energy choices by imposing the European Community and by convincing governments. Even ours. Also because the number of advisers of ministries, unable to earn the bread with the skills, go to copy what the Germans have done 10 years earlier! But we can not blame the Germans to be forward-looking, competent and - above all - intelligent!

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! Let's do it! or not?

PV, as they say, allows us to produce clean energy for free, since the sun does not pay.
I am in favor of solar, but we need to explain that you tell many lies about it. We see the principal.
The energy is free? No. To repay the facility needed at least 20 years. Frankly, if it is a problem of costs, better to pay a bill every two months rather than a shot of money he recovered after 20 years! Unless they panels or ruby \u200b\u200bme not fail!
But after it produces energy without spending anything! False. After 20 years the panels throw them away, because they are designed to last 20 years. Anyway, you'll find all parts. Do not find them even after 3-4 years! If a panel is broken and can not find it (I say just one!) You have to change the inverter and the disposition of others. Maybe on your roof to find out that there are more! I wonder why do not you ever tell! But he was cornered by
! Yes, but first of all are people's money. Why it is better to give the panels rather than day-care centers, to reduce the cost of film or pensions?
But it does not pollute! False. Then, after 20 years, these panels put them in that dump? And to extract indium, silicon, tellurium, and all that good things it takes to manufacture them we can avoid digging mines? deforested parts of Africa? and what happens to waste? And to purify these metals for even if you do not use arsenic, which then pollute the water? And if not for these metals are extremely rare?
But at least we no longer give our money to the Arab oil! No, we must give them the same, because they still do not solve the transportation problem. And then we have the solar panels buy them from abroad. What do I care if I know that my money instead of taking the Arabs, the Germans take them?

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PV is free?

Photovoltaic energy is not free. Facilities needed to produce extremely expensive. Take an example.
Suppose you have invented a car that does not consume fuel. You can use it without spending a penny on petrol or lubricant. Suppose also that his life is 10 years. And - at last we assume that costs one million euro! You buy it?

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Nuclear Power Plants. Why not?

The production of nuclear energy does not belong to the concepts of industrial democracy or economic. The investments needed and the scales of production are so high that it is not possible access to the competition if not by very few actors: big government, big business. The growth of nuclear power would lead to the need to monitor with arms-producing countries of minerals, plants refining or disposal of nuclear power plants.
All the technology is in the hands of Americans and Germans. In small part of the French, Russians, Chinese and South Africans. The centrifuges are German, for example! The instrumentation is American or German! Italy, although in the past a good position (3.o producer after the war!) Has always played a role only in the construction or basic research. But basic research does not do anything unless you also create applications. Research base is also not patentable! Often, our investment in itself insufficient, served only to allow others to patent applications, which we then buy. And as the work of construction, is now in German hands, Chinese and Japanese. So the Italian business sector has always been conditional and instrumental geopolitical interests whose control has never been in Italy.

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nuclear energy. As appropriate?

power stations, what it 'for granted, do not use the uranium ore, but rods or spheres, and the final products. These products can be purchased from a few producers (4? 5?) In Italy and if any craftsman would produce, it might not. Not only for the extraordinary capital needs, but also because - by virtue of international agreements against nuclear proliferation - would literally attacked as a potential producer of nuclear bombs.
With the nuclear dependence would not be reduced. About
costs in any textbook of economics explains that products with similar functions follow the same market. It is said that the substitute products follow the prices of the main product. Increases when cocoa prices also increase the prices of its substitutes. Ditto for the sugar. And even firewood, gas, coal, following the trend - more or less - oil. This - In dollars - has tripled since 2001. But uranium has increased 20 times!
With nuclear you have no guarantee of savings! Indeed, given the fact that the producers are very few, the competition can be organized in a monopolistic cartel with ease. The uranium market is all oligopoly (raw material, finished product, power, waste disposal) and is therefore very dangerous for the balance of the economies.

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If energy costs much development goes down. Too many

Mica said. In more developed countries, except USA, the energy is more expensive! In Nigeria is cheaper than in Japan! The problems arise Italian Dagi waste and an inept political class, unable to organize the country. Whatever the color! Are any? Not me. Politicians are any, because they are not able to suggest different ideas, to choose from. If you notice, in their discussions to keep us a lot to specify which party they belong. In fact there is' another way to distinguish them. In fact, Italian politics is indifferent and increasingly conservative.

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energy taxes?

Maybe, but not a bad thing. Let's see why.
Each state can decide to lower taxes on energy and raise them on bread or salaries.
But the energy is good in a sense of luxury. The rich have cars more powerful, more appliances, luxurious villas with lights. So better to tax the goods of this type instead of the pay slips. No?
Schmidt, former German chancellor, even dreamed of eliminating all taxes and apply only to the energy. So the tax would be taxed much more about the rich not the poor.
Moreover, if the energy is expensive, also because of the taxes, you are more aware of the savings. So if it consumes less and pollution is reduced.

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Nuclear power is cheaper? Why

No. Or rather, it depends. France is cheaper than in Switzerland. The price depends on how the state pays to cover the deficit. In France it costs less because nuclear power plants are well-foraging by the state, then that means tax citizens.
Even Japan has nuclear power, but is the country where energy costs more. More Italy than in Germany.
Nigeria is the country where energy costs less. But as you can see this does not prevent the Japanese to live much better than the Nigerians.
also add that the final price is burdened by taxes. With the same energy cost (ie how much money going to the plant), in Italy the taxes are higher, and this explains why energy costs are high.

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in Italy does not produce nuclear energy?

Because of the referendum? No. Although the referendum there 'still the Ministry of Agriculture (they have just changed the name!). There yet the funding of parties!
In Italy there is no production of nuclear energy because of international agreements with neighboring countries.
E 'a technical matter that is the reason why.
The NPP can not turn on or off at will: it takes many days to start on or off.
But at night the power consumption is low enough, and then arose the problem of energy to do more. Well, it is sold at a negligible price to Italy, as long as it is withdrawn and thereby prevents the electrical system goes haywire for excess energy produced than consumed.
Italian power companies then go out gas-fired power stations and sell us nuclear power France and Switzerland, who have already bought.
During the day the reverse is true. During peak periods Italy sells abroad (Germany), the energy produced by gas, gaining a lot of money.
Result: we import a lot of nuclear energy under cost - paying a pittance because they really do a great favor by withdrawing! We export very little energy, but at times when that is a lot. It 'a situation of great convenience: you earn! But television and the press does not tell us why this truth. If we were to set up nuclear power plants, we will have the problem of what to do at night: since we do not would have nowhere to put more energy, undermine the entire European network! Should be found for a special use more energy, and that's sticking out hydrogen. But that's another story!
you remember the famous black-out? It was at night, but not because we had no energy, but simply because we kept our power off, given that nuclear energy in excess of the French and the Swiss we arrived at the cost of garbage! To create the problem it took was a little carelessness in those who watched the line (the night is noisosa and just want to sleep!). When the issue came out there 'was the time to reboot our plants and everything is off! Domino Effect!