What’s the Return on Investment on Solar Thermal?

I just received this terse question from a reader: “What’s the ROI (return on investment) on solar thermal?”

I responded, hoping to prompt more discussion: “That’s an interesting but impossible question to answer. What is the nature of your interest in the subject, if I may ask?”

I post this brief conversation because it’s indicative of two much larger and incredibly important issues:

1) Computing the ROI for investors in new technologies like these is impossible, as no one can pick the winners from the losers at this point. Personally, I’m betting on solar thermal, and, though many agree, there are far greater minds than mine that don’t see it this way.

2) Not to get too flippant, but what’s the ROI on saving our civilization from destruction? According to Lester Brown, whom the Washington Post calls “one of the world’s most influential thinkers,”

Ice is melting so fast that even climate scientists are scrambling to keep up with the shrinkage of ice sheets and glaciers. The melting of the earth’s largest ice sheets—Greenland and West Antarctica—would raise sea level dramatically. If the Greenland ice sheet were to melt entirely, it would raise sea level 23 feet. Melting of the West Antarctic ice sheet, the most vulnerable portion of the Antarctic ice because of its exposure to both warming air and warming ocean water, would eventually raise sea level 16 feet. Many of the world’s coastal cities would be under water; over 600 million coastal dwellers would be forced to move.

Solar thermal holds the single greatest promise of clean, abundant, inexpensive energy — in the absence of which mankind will be unable to make its way across these next critical 50 years.

I’m sure this latter point was not contemplated in the reader’s question, but some folks may find it worth considering.

View the original article here

Earth Energy For Home - Top Guide For Home Solar & Wind Power Systems!

Latest Edition Includes "Free Bonus Report Showing You How To Set Up The Entire System For Free And How To Earn Extra Cash From It!"



>>>Click Here To Check it out!<<<

Alternative Energy Resources

If you want information on solar electric systems, written in a non-technical manner that you can easily understand, you've come to the right place.

With all the technical jargon kept to a minimum (and when necessary, fully explained), you will have all the answers to the questions that have made you a little hesitant, in the past, to get more involved in clean, alternative energy production.

The environmental importance of alternative energy production cannot be overstated.
Solar power, wind power and micro-hydro power are non-polluting, renewable and sustainable forms of energy production and their use should be actively encouraged.

An important step in this direction is to have readable, easy to understand solar information available.

Now, with the solar information offered here, you will be able to move forward and take advantage of this clean, renewable source of alternative energy.

>>>Click Here to Check it out!<<<

Reduce consumption electric Intelligy

The advantages of the technological progress in the world of energy mean that many of these implementations revolve around an energy saving, which is not only an economic advantage, but a matter of State, that benefited long-term in alleviating the energy deficit that has a particular population, if the intakes are lower.

On this occasion, we have encountered with the presentation of a named device as Intelligy, that as his name is indicating, it is pointed to an intelligent consumption of energy power, easy to use and that will allow us to manage the spending power of a home, Office or any environment.

Of course, this requires an entire infrastructure, with electronic devices that connect wirelessly with this invention, which has the mission to simply monitor how much consumed in periodically, weekly or monthly, and assess a proposal for the user to consume less electricity.

It is easily controllable with a touch screen and a simple, intuitive GUI also scheduled to give an alert when we forget a device is switched on or when we're doing an unnecessary expense.

View the original article here

Cataratas del Niagara

As its name implies, this is not a simple waterfall, but a combination of several of them, located in the Niagara River basin, located in eastern North America, and that just makes a border between the United States and Canada.

As we have said, is comprised of several waterfalls situated at a height of 236 meters above sea level, and with a fall of approximately 52 meters, currently stationed with an area of ​​strong environmental conservation policies and resorts Niagara Falls (New York) on the U.S. side, and Niagara Falls (Ontario) Canadian side.

His background is in the time of glaciation, which ended about 10,000 years ago, which formed the Great Lakes area, due to the action of a large glacier that excavated soil and deepened some channels today make these lakes.

Among the falls is a small portion of landmass comprising Goat Island (in English, Goat Island) a facility that is a natural boundary between Canada and the United States and is completely uninhabited.

As we have said, the Niagara Falls consist of a conglomeration of cataracts, so there are three different and distinct groups together:

American Falls: Coming from the New York side, the most extensive and voluminous despite not having great height, making them the largest tributary area Lake.Cataratas Great Canadians: From smaller than American, enclosing between them the Isle of CabraCataradas Bridal Veil: the smallest of this conglomeration

Air quality measurement systems

Measuring the quality of the air in cities is today something fundamental. Why we need to be installed measuring systems in all of them, especially in black spots of the city from the point of view of the emission of gases.

Pollution in the air

Today there are various types of measuring systems to analyze the presence of particulate pollutants.

Sulfur dioxide Analyzer. These meters are based on the fluorescence of the molecules of sulfur dioxide.

Carbon monoxide Analyzer. It is based on the absorption of infrared radiation of the carbon monoxide molecules.

Ozone Analyzer. Measure the absorption of ultraviolet radiation.

Oxides of nitrogen Analyzer. They measured the energy released to the join the oxide of nitrogen and ozone, energy released in the form of photons.

Air quality measurement system

Analyzer of suspended particles(PM10) one of the most important. These devices make a measurement of suspended particles with a diameter exceeding 2.5 µm. They can also incorporate systems of separation and removal of particles with diameters exceeding 10 µm.

Hydrocarbon Analyzer. They incorporate an iotización detector of hydrogen. Detect detached particle by the hydrogen to burn it and these produce an electric current with intensity depending on the detected particles.

Analyzer of BTX. They use a Photoionization detection device or an iotización flame detector.

Ultraviolet radiation sensor. It measures the light emitted by a phosphorous sensor.

This should be added conventional measurement of weather systems that also significantly influence the State of the quality of the air and pollution.

Aurora Borealis

The aurorae are luminous phenomena that appear mainly in the polar regions, North and South; they are respectively the aurora borealis and the southern aurora.

the polar aurorae are caused by a radiation of charged particles from the Sun, forming what is called the solar wind. Electrons and protons coming from this radiation are "trapped" by Earth's magnetic field, and collide with the ionosphere. This is a layer made up the Earth's atmosphere, which is composed of gases ionized and subjected to very high temperatures. As from the Sun particles collide with different gases of the ionosphere, they give rise to brightness and lights, as well as a variety of colors that make the show one of the most impressive nature.

It sometimes seems that the auroral curtain almost touch the ground. However, this phenomenon only occurs between 100 and 1,000 miles of the Earth's surface. The clashes that take place at lower altitudes create shades of yellow and green, while a larger altitudesproducen red light emission and blue. Some polar auroras are huge--they may reach 3 to 5 miles thick and more than 160 kilometers of height- and literally extend thousands of miles.

In Greenland, Iceland North Norway or Alaska, the aurora borealis can be seen some two hundred forty nights a year. In the North of Siberia and the central region of Canada is about a hundred nights a year, while those who reside in southern Alaska only watch a few five nights a year.

In the Centre of Mexico you can see an auroral event every ten years. This is due to the Aurora rely on solar activity and its intensity is greater when the corpuscular radiation increases during solar flares. The intense solar flares can cause visible Aurora outside common areas; lights even in Equatorial areas with an average of once every ten years can observe.

The activity of the polar Aurora is maximum in autumn and spring. The regions most prone to express this phenomenon are which are placed in a circle of 22 °of latitude from each of the magnetic poles of the Earth.

In principle, the most intense polar auroras may provide for. Indeed, they occur in relation to the solar flares that can be detected through telescopes and observatories. It is known that the particles that have been thrown from the Sun after eruptions take 15 to 30 hours to reach the Earth's atmosphere.