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The Green Watch, to map the 'eco-city

is a French project, which involves the use of special watches to monitor the environment. These watches are of the type shown in figure (The Green Watch), two types of sensors to monitor the environment: in particular, ozone and noise.


The idea is to increase the number of samples taken in the territory of Paris and provide a better spatial distribution of samples that are already engaged.

The data collected, geo-referenced, are transmitted to a mobile phone that shares them online. From here they are made available to scientists through the elaborations of open platform " Citypulse .


Some information you can find it HERE .

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The Cassano d'Adda

In the town of Cassano d'Adda (near Milan) there is a power that the A2 in recent years has changed their traditional power plant operation and has become a central combined cycle thermoelectric . HERE you can find some more information about this facility, including a short video showing the operation and the main structures.

Do not forget the fact that the activity of the plant has made possible the introduction of district heating system in the town itself. The video says the following:

"in a combined cycle power plant in the production of electricity is generated by two generators. The first is directly connected to a gas turbine, the second is connected to a turbine powered by steam produced with the exhaust gases from the combustion process of gas turbine.

Compared to a conventional power plant and then, in a combined cycle plant you have, the same electricity produced, a significant increase in performance with a significant reduction of atmospheric emissions .

production develops in stages: it all starts from the section Turbogas . Here the process of combustion occurs in a system of burners by mixing with air drawn from outside the natural gas. The hot flue gases then expand through the stages of the gas turbine is the heart of the system. Their heat and pressure is converted into energy rotation and then converted into electricity by a generator. The boiler is the steam through the closed loop thermodynamic demineralized water through hot gas still coming out from the gas turbine. Through a flue and chimney gases for the combustion process are emitted into the atmosphere. This phase involves the use of high-pressure steam from the heat recovery steam generator. In the three sections of the kinetic energy of the steam turbine is absorbed by the rotor blades, causing the shaft to generate electricity via the alternator. In the condenser the steam is cooled by water cooling. The condensation obtained is recirculated to supply the heat recovery steam generator. The electricity produced passes through a transformer to raise the voltage that provides for the transport distance, through the high voltage power is delivered for distribution in the city.

The production cycle is monitored and managed from a control room. Great attention is focused on environmental issues, the quantity and quality of air emissions and water conditions. The laboratory is constantly analyzing all the water in the system. The water used for cooling the steam is taken from the Muzza canal near the station. After use is then returned in the same condition except for a slight increase in temperature.

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Ecofont, the ecological

Spranq The Creative Communications Agency has recently created a new font, Ecofont.

The difference with other characters is given by the fact that the letters of the new characters are pitted, thus saving 20% \u200b\u200bof ink in the printing of documents. The appearance of the document will be a bit 'more gray (depending on the type of monitor), but basically on the document printed the circles you see less, up to size 14 pt.

The procedure (for Win XP) is:
-> Start
->
Run -> Type% windir% \\ fonts (to open the folder containing all the characters of your PC)
-> Paste the attached file (which would be the character spranq_eco_sans_regular)
-> Open Word and try

If you want some more information go to the site of Ecofont.

It 'an interesting initiative, think how much you could save ink, especially in offices ....

It is especially a food for thought ... even if you do not use this character, you should know that:
- reducing waste is a good start, also setting a print quality economic
- avoiding unnecessary printing you can save ink and paper;
- remembering that the sheets have two sides (ebbene. .. yes!) can very well use them to make copies of the test!

Spread the news! Hoping to raise some ...!

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Like the wind provides energy technologies and offshore wind power

The wind is a natural phenomenon behind the process of producing electricity, as it is the agent that causes the rotation of the wheel and starts the mechanism that causes the transformation of energy from kinetic to electrical .

The movement of air masses is due to the difference in pressure between two points. It originated as a force that pressure gradient force acting on groped to redress the balance. The airflow does not go directly from point to point, ie the same direction of the force gradient, but suffers a deviation due to the Coriolis force which tends to move right and left hemisphere in settentriolale ' Southern Hemisphere. At low altitudes, approximately less than 600m, the friction with the Earth's surface plays a significant action on the movement of air masses.

The wind speed is dependent on the pressure gradient, ie the pressure difference exists, and is measured with an instrument called anemometer . It has, of course, a crucial role both in machine design and in evaluating the wind potential of a site. For the purposes of a cost-effective exploitation of wind energy is therefore essential to study the variations of wind speed at a given site, which must be conducted on the basis of long-term observations.

Wind energy, due to the movement of air masses just mentioned, is ubiquitous on Earth but only in some areas is sufficiently intense and regular to be of interest for a practical use: it is essential to analyze the cost-effectiveness.

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Middelgrunden - Copenhagen

The increase in emissions of carbon dioxide and other pollutants linked to the exploitation of conventional energy sources made from fossil fuels, together with their limited availability, has created an increasing emphasis on the exploitation of renewable energy "sources" for the production of electricity.
addition to hydraulic source, already widely used in Italy, other renewable sources have made inroads in recent years.
Among these, the wind has been shown to be able to supplement significant at traditional sources, especially at local level, ensuring the fulfillment of the requirements of economy and at the same time respecting the needs of environmental protection facilities in which they appear.
not forget that the fundamental problem of primary interest is to reduce the levels of energy consumption, now a functional system of life and production continues to grow. At the same time, however, is not acceptable that even in developing countries to decline to social standards that are right to be pursued, but involving, inevitably, an increase of per capita consumption of energy.
The alternative to this situation can only be the use of sources of "clean" energy, ie renewable energy (biomass, wind, solar, geothermal), in order to minimize the increase in the amount of carbon dioxide into the atmosphere.
Obviously, the choice should be accomplished without neglecting environmental aspects that the adoption of such technologies. It would be ironic indeed if the use of these sources to determine, even local level, environmental damage of another kind.
The production facilities for wind energy, in particular those consisting of multiple wind turbines connected to electricity grids (known as wind farms) had, for years, particularly in large applications in Northern Europe, Germany and Spain.
With the evolution of technology and with the increasing size of turbines, has initiated the study of applications at sea (offshore).
The main reasons that prompted the research in the offshore sector are:

- Scarcity, in some countries, the exploitation of suitable sites for wind
earth - wind speed higher
- Twenty more stable in terms of temporal frequency
- Surface roughness smaller and therefore cheaper turbines
- Less turbulence: the higher life of the turbines
- Less impact on the landscape with respect to an installation on the ground

In Italy there are many factors that adversely affect the development of this area (the low average wind, the conformation largely mountainous land, high population density and the widespread presence in the area of \u200b\u200bcultural and archaeological sites), but the sector is undergoing a period growth.

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Torraca: the common illuminated LED

Torraca in the province of Salerno, is a medieval village of little more than a thousand inhabitants (in 2007 it had 1400). This council has made a very important choice: he decided to invest in energy saving and clean energy at the same time.
maintaining public lighting at levels equal to those held prior to the installation of LED save the city as much as 65% also reduces the risk of electrocution, because the plant operates at 48 volts.

the territory there are also four photovoltaic systems that allow energy independence an indoor pool.
The initial investment will not have been indifferent, but if you think that the city can set aside up to € 40 000 per year, considering its small size, is not bad.

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Ecolamp: recycling of low energy light bulbs

Lately I have noticed that the station billboards have become a feature ecological, thank goodness, for once let us not see advertised eyeglasses, cheap, etc ...
The advertisement in question is to Ecolamp : The consortium for the recovery and disposal of lighting equipment.

In a nutshell, what is done is set up collection points such as those in the figure, arrange transportation from temporary storage points and then on to the biggest points of actual treatment, which is recovered up to 99% of the materials used. It 'important task of this kind: it is true that energy saving light bulbs can save something on your electricity bill, but if disposed of in glass or in the dry portion may be detrimental to the environment because they contain toxic substances like mercury (Hg).
I recommend you visit the site of this consortium to get an idea of \u200b\u200bhis activity as regards the products covered by recycling reads:

The Legislative Decree on WEEE applies to all waste from electrical and electronic equipment in the categories identified in Annex 1 of this Decree.

As for the lighting industry, the legislation only applies to lighting equipment, by which the Law indicates luminaires and light sources, with the exception of incandescent and halogen lamps. The light sources covered by the legislation concerning the following products:
- linear and non-fluorescent tubes;
- non-integrated compact fluorescent lamps;
- integrated compact fluorescent lamps to save energy;
- the discharge lamps high intensity, high and low pressure.

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The particle filters (FAP)

The particulate filter is a system introduced since 2000 to reduce pollution from diesel engines, particularly the component of PM10. The patent belongs to the PSA group (Citroen and Peugeot). This type of engine emits more particulates than gasoline engines, especially in the case of six older engines (especially euro1). Of course, it also said that gasoline engines emit infinitely higher values \u200b\u200bwith respect to other toxic substances (phenols), but this is not the topic of this post.

emissions are filtered with appropriate filters, which are internally filled with microscopic channels where trapping occurs PM10: it is periodically burned automatically when the car reaches a certain speed for a certain number of miles . To allow the diesel combustion must be added the ' oxide cerium (also called glycerine ) that allows you to be burning the lower temperatures. The glycerine is stored in a separate tank, which must be replenished periodically - every 80,000 miles.

When the controller detects that the filter is clogged, an indicator is lit and the driver must keep a certain speed for a certain period of time, to allow the achievement of an appropriate temperature (450 ° C) and the completion of regeneration cycle.

There are filters that work without glycerine, stainless steel, but to work they require higher temperatures (800 ° C).

speeds be achieved are between 60 and 90 km / h: If you are unable to maintain a constant speed the process is repeated.

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film filter glass

filtering films applied to glass windows allow a great saving, as well as giving security as they increase the resistance of the glass.

Savings guaranteed since the films have the property to prevent loss of heat to the outside and repair of solar radiation especially in summer, because the radiation is higher: with a system of this type can significantly reduce the costs for air conditioning. The glass must meet to specific safety requirements when it comes to public places such films, conferring resistance shatterproof, are useful for this purpose.

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Good ideas are in the air: KSU still

Not long ago there was talk of this new technology (KSU, this is the link), which uses the energy of the wind at high altitude. This short service
TG3 - Environmental Italy shows the mechanism of operation, thanks to tests carried out at the airport of Casale Monferrato.

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Hammarby: new eco-district of Stockholm

Hammarby is a former industrial area south of Stockholm, now completely decontaminated and upgraded: it has turned into an eco- district, which by 2017 will be ready to house 11,000 apartments and 200,000 square meters of offices and services. The design must take into account many details that will enable significant energy savings , will present a number of biogas digesters that accumulate the degradation of sewage. This gas, made from specially treated, can reach out to different uses: used as fuel for buses and cars, or used in the kitchens of homes. It is not excluded, in a second phase of the project, putting in place processes for reuse of solid waste as fertilizer for agricultural crops.

could not miss a recycling system , accompanied by a waste incinerator for those who can not be recycled: the heat produced during combustion will still be useful for domestic heating through district.

Obviously electricity is supplied by solar panels , which will be sufficient to illuminate the common areas and to cover a part of the supply of hot water.

The ambitious goal to which you point is to get half the energy needed by the Sun and half from the reuse / processing of waste products: the only hope in the success of the project.

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solar thermal power plant: What is it?

A thermal power station (also called "solar thermal power plant"), collects solar energy through solar panels of conveying light into a liquid that, having reached the boiling point, it becomes and gas is piped into a turbine connected to an alternator. The kinetic energy of the gas is then converted into mechanical energy, which is used by the alternator to produce electricity.

Esis central, rather than using solar panels, using a system mirrors oriented so as to convey all the light towards a water tank atop a tower. The light (heat) to evaporate the liquid in this tank and through the turbine and generator to get electricity generation.

The advantage of using mirrors is that they can reach higher temperatures and thus offers the possibility of using special liquids other than water and raise the overall efficiency of the system.

Carlo Rubbia, Nobel Prize in physics, explains the advantages of solar thermal:

"As a pilot project added 20 megawatts from solar technologies to the central Priolo enough to a city of 20 000 inhabitants, saving 12,500 tonnes of oil equivalent per year and avoid the emission of 40 thousand tonnes per year 's carbon dioxide. The beauty is that this type of energy is cheap: at current prices, the plant pays for itself in 6 years and it takes 30. Moreover, once it has started mass production, prices will tend to halve construction "

The efficiency of a thermodynamic system is very high compared to that of a photovoltaic system, we see some simple calculation.

Solar radiation average is about 1000 watts per square meter. From each square meter of mirrors, in a year, we get the equivalent amount of energy supplied from a barrel of oil. Assuming that 7 barrels correspond to one ton of oil, with 7 m would lead to a TOE (ton of oil equivalent). With 70,000 square meters (sq km or 0:07) would be obtained as many as 10,000 TEP, with 7,000,000 square meters and there would be a Mtoe, ie 0.5% of the Italian national demand.

To meet the overall national demand would be sufficient for an area of \u200b\u200ba square with sides of about 40 km .

In 2007 the Italian government has approved a plan to build 10 plants from 50 MWatt in southern Italy ...