What is the daylighting?

Daylighting is the use of natural sunlight to brighten up house interior. You can achieve daylighting by placing windows on the roof  in proper sizes and locations or by special designed solar daylighting devices. And solar daylightind devices are the subject of which I would like to say a few words.

Daylighting devices are in shape of tubes or cables:

Tubular daylighting device

is special device, which is placed on the roof and from there it brings light into interior place of the house. It’s composed out of three basic parts:

Solar collector – head of the device is clear multi-faceted dome, which can catch sunlight from almost all angles.

Solar tube also called solar tunnel – is the body of device. When sunlight is collected it’s channeled through highly-reflective tube to the room to be lit. Tubes usualy have10 inches (25,4 cm) in diameter. The UV rays that could fade subjects in the room (carpets, clothes,..) are removed by device.

Diffuser – creates steady, even light through the lit space, without creating any glare. It is set on the end of the tube on the ceiling.

This is it, device you just mantle and forget about it. It gives you satisfaction without any current expences.

Fiber-optic daylighting device

collects and channels the light through cables. This device is also composed of three parts:

Solar collector – it can be placed on top of the roof or any south-facing sides of the building. Collector is a rectangular panel composed of small lenses, which catch light from many angles.

Fiber-optic cables – cables which can channel sunlight up to two stories deep! It means also underground basement can be lit. UV rays are removed by special filtres placed near the surface of the lenses.

Fixture – creates steady, even light, without glaring. It is fixed on the ceiling at the end of the optic cable.

Interesting, powerful, healthy solution for perfect interior lit.

Main problem of high expenses is gas-phase deposition in a vacuum chamber, which should be replaced with new nanomaterial that would be in normal expense range.

The cells are based on the use of specialized inks that can be printed using a roll-to-roll printing process on a plastic substrate or even stainless steel. The light-absorbing nanomaterials are 10,000 times thinner than a strand of hair and because of this microscopic size they carry better physical properties that can enable their use in higher-efficiency devices.

For now the efficiency is not high enough, but the team is already working on it with great optimism!

Via: University of Texas At Austin [Press Release]

In 2007 more than 40pc of all electricity in Portugal had been produced by renewable. Solar power, wind power, hydro power, the power of waves, tide and sea currents is rapidly increasing country’s renewable energy basket.

Moura is the name of town, where the largest photovoltaic solar power plant in the world is being created.
It contains more than 240.000 solar panels for direct electricity production.

Portugal wants to be the world leader in replacing dirty energy sources, such as oil, gas, coal, and nuclear.

Manuel Pinho, the minister of economy of Portugal said: ‘The cost of doing nothing is very high.’ They want to use current record energy prices, threats of global warming and climate changes as a leverage to create brand new renewable innovative knowledge, technologies and products, which are going to create many new jobs and much more new income, especially by exporting this new technologies to other countries all over the world. Portugal has really reached a very good position in this field.

p.s.

European Union has set the target of 39pc as a share of renewable energy sources till 2010 for Portugal, however the country had reached 40.7pc in 2007, already. That means, that the Portugal is more than 3 years ahead of EU bureaucratic costly planning. New topic to think for the American President and the Britain’s Prime Minister, who are far behind in spite nice words and promises.

The purpose of this web site is building awareness about Renewable Energy sources and Environmentally Friendly way of life.

Solar Power is going to play an important role in our Environmentally Sustainable Future and here we are going to present many different modern approaches of harnessing free and endless Solar Power.

Our opinion about fossil fuels such as oil, gas, coal is that they had played a very important role in industrial revolution and 20th century, but that their role should have finished for good already because of their terrible Green House Gas emissions. That extensive emissions have caused Global Warming and Climate Changes, which represent a great threat to all life species in present form on earth.

Even though some people and world leaders present Nuclear Power as a clean source of energy, we believe that Highly Radioactive Material is deadly dangerous for any form of life and represents almost eternal threat to humanity and to all other life species on Earth. Highly radioactive material used in Nuclear Power Plants is deadly dangerous even after 100.000 years!

We are going to point out to some catastrophic forms of chemical, nuclear and other pollution on Earth and in our Earth orbit. We simply cannot speak about the quality of life, if the rate of pollution is so very high as it is today.

Greed and Profit at any cost by Individuals and Corporations have pushed humanity to the tipping point between life and death, and we really do not have many choices left of what to do if we want to survive.

We would like to build a very live community of people who share similar opinions.

Together our environmentally friendly Green Power Activities could be so much more successful.