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solar plane that flies at night

Il mito di Icaro narra che fu il calore del sole a sciogliere le ali di cera costruite dal padre, Dedalo, e a mutare in tragedia il sogno del primo uomo che voleva volare. Quasi a voler farsi perdonare quell’antico sgarbo, oggi è proprio il sole a permettere all’uomo di staccarsi from the ground without burning any fuel, without further polluting the sky already saturated with poisons. We are talking about a plane moved from solar energy: a "fly green", finally! Behind the design of solar-powered aircraft are Bertrand Piccard and André Borschberg, two famous Swiss in the world of flight, the first to have circumnavigated the globe in a balloon, the second for the triple role of design engineer, pilot planes and helicopters , successful entrepreneur.

The brilliant insights and some 'visionary powers of the first and the second led to the birth of something that could give off a green revolution in the world of aviation, responsible together a quello terrestre dell’emissione di un terzo dei gas serra che stanno surriscaldando il pianeta: il nome da tenere d’occhio è Solar Impulse ; così è stato battezzato il primo velivolo a energia solare che abbia mai solcato i cieli. Il decollo inaugurale è, infatti, av-venuto nel dicembre del 2009 ed è stato un successo.

Ma è recentissimo il primo vero trionfo dei due novelli argonauti: tra il 7 e l’8 luglio scorsi, il Solar Impulse ha volato ininterrottamente per 26 ore, decollando al mattino e atterrando il mattino seguente. Un’intera notte passata in cielo grazie all’energia solare accumulata nelle batterie incrociando a oltre 8.000 metri di quota durante il giorno, per make the most of the rays of our star.

Article from the magazine Solar & Renewable Energy in November 2010

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How does a photovoltaic

A solar PV system is used to produce electricity from the sun through the use photovoltaic modules. The resulting energy can be used instantly for domestic consumption (lighting, appliances ...) or can be poured into the local electricity network operator ( Enel, ACEA , A2A).

It is estimated that the investment for a photovoltaic system could be paid off in 8-10 years only with the savings in the bill, then you must take into account that the state encourages the establishment of this facility, through the Energy Bill. The operation is based on a system of exchange with the public electricity network: in times of little sun - at night for example - the energy is taken from the network during the day, or in the sunniest months, with any excess production can be fed into the grid.

Proper exposure of the plant has a considerable influence on the success of the intervention: the inspection of the designer it is therefore necessary to verify the possibility of installing i panelli esponendoli a sud e con una inclinazione di 25 -35 gradi. Deve poi essere verificata l’assenza di ostacoli che potrebbero creare ombreggiamento e la disponibilità dello spazio necessario per installare i moduli. Si tenga, infatti, presente che occorre una superficie di circa 8-10 m2 per ogni KW di potenza.

La producibilità di energia di un impianto fotovoltaico è influenzata da alcuni fattori: la radiazione solare e le condizioni ambientali del sito lungo tutto l’anno, le prestazioni tecniche dei moduli e dell’inverter, l’inclinazione dei moduli, l’esposizione e le eventuali ombre temporanee. La potenza di picco (kWp) di un impianto esprime la potenza teorica massima che esso può produrre under standard conditions of sunlight and temperature module (100 W/m2 and 25 °).

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How does a solar thermal

A solar thermal system is used to produce hot water for domestic use and / or heating through thermal solar panels (also called solar panels) which are devices that convert solar radiation into heat energy.

energy can be stored and therefore can be used at a later time. These systems, which are often confused with photovoltaic solar panels, are easily integrated into the architecture of a building and have low maintenance cost.

The operation of these plants is rather simple: the movement of water from the tank to tap home is made by forced or natural circulation in case of forced circulation solar panel incorporates a hydraulic pump with electrical power.

The efficiency of solar panels of course varies depending on sun exposure, latitude, season and weather conditions. The number of panels that are to be installed will vary with the climate of the place and of course with the needs of users. Bear in mind that it is a panel of one square meter produces an average of 80-120 gallons of hot water per day.

It 'clear that at night the solar panels do not produce water calda, cosi come quando piove. Ecco perché è indispensabile il serbatoio, la cui funzione è proprio quella di accumulare l’acqua per renderla disponibile al momento del bisogno. Normalmente i pannelli solari termici non sono l’unico dispositivo per il riscaldamento dell’acqua presente in un’abitazione. Sono, infatti, spesso affiancati da scaldabagni elettrici o caldaie a metano.

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The photovoltaic system must be insured but only with the right policy

La copertura assicurativa è sempre consigliabile per tutelare il proprio investimento ma è fondamentale scegliere la modalità su misura per le proprie esigenze. Uno dei problemi legati all’esercizio degli impianti da fonti rinnovabili durante il loro ciclo di vita - questione particolarmente sentita dai photovoltaic systems for which any firm represents a loss both to the aspect of production, and especially on that of full-bodied and incentives - is insurance.

Ensure photovoltaic means to protect their investment by a series of unexpected events that range from electrical failure, the weather, through theft, a phenomenon that is developing more than a little, and has the primary object of large plants, but is also affecting households, perhaps placed on second homes or are located in isolated places.

As in other areas, there is probably no perfect insurance for your photovoltaic system that is good to specify, always has unique characteristics as tailored for the specific installation, but it is certainly possible to choose the conditions to protect your investment. First of all it is good to clear up a basic misunderstanding.

Often when we talk about solar panels is thought that these components are guaranteed for twenty years. In fact most of the manufacturers guarantees performance within a certain range with an annual rate of decay, actually for decades, but the functionality of the panels is guaranteed as all products, only two years. So the so-called "electrical fault" to occur 24 months after purchase is not guaranteed by the manufacturer, reason for which is still more necessary to ensure against any problems thereafter.

The full article is published in the journal Solar & Renewable Energy November

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Need an installer? Here's how to choose

If you want to install a solar system in your home, whether Whether photovoltaic or solar thermal , the first thing to do is look at very competent players. But how to untangle the maze of offerings? That's what it should be taken into account for orientation choice.

When you choose to have a system to of domestic renewable sources is crucial, the choice of ' installer. To date, in fact, there are no books or certification effective on this front, and any electrician in the case of photovoltaics, or plumber in the case of solar thermal, can suddenly skilled technician to install these plants, whose problems are far from those typical traditional electrician or plumber.

is true, however, that many installers active for years have developed through training and field experience, know-how that qualifies them with flying colors, but the final choice is up to the customer that their expert often is not. So what are the things to watch out for when choosing an installer for your system to achieve the renewable energy sources? The first rule, elementary, is not to stop at the first asking more than one prior to installation companies that have plants in their curriculum similar to those that want to achieve at home mistrustful of excessive rebates and those who misrepresent extreme ease of installation.

systems in renewable, in fact, are "stitched" to measure the user - there is an installation alike - and require a specific approach to each case. The roof slope, exposure and latitude are just some of the elements that should not be underestimated, otherwise the poor performance of the system and the consequent loss of investment.

The full article is published in the journal Solar & Renewable Energy November

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Swap fantasy ... Good

's Fantasy swap organized by dear Star (Etoile).
I was matched without doing it on purpose, my dear Carmy fantasies of pearls and here's what I sent along to the next swap Soribel:

dear While Monica has left me really breathless

a wonderful, wonderful, the only elf that I have to say it left me speechless!
1000 Thanks for this wonder!