Greenhouse Plans

You ve decided to pursue a solar home improvement, but aren t so keen on the idea of putting panels on your roof. No worries, you just need to understand the concept of gain.

I Gotta Gain Some Heat

I ll cut to the chase gain refers to how you generate heat for your home without solar panels. You can think of it as gaining heat by manipulating the power of the sun. There are three categories of gain: direct gain, indirect gain and isolated gain. So much for the mumbo jumbo, what are we really talking about here?

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The G8 Gleneagles Summit in Scotland two years ago asked the World Bank to produce a roadmap for accelerating investments in clean energy for the developing world, in cooperation with the other international financial institutions.

The Clean Energy Investment Framework (CEIF) identifies the scale of investments needed to:

increase access to energy, especially in Sub-Saharan Africa;

accelerate transition to a low carbon economy; and

adapt to climate variability and change.

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The issues associated with the continued of fossil fuels are complex. What is undisputed, however, is the world is turning to meet the challenge through renewable energy.

When one thinks of the amount of energy needed to power the modern world, it is easy to get a headache. The sheer volume is so massive as to be difficult to picture. Now that we have awakened to environment, climate and societal problems associated with the continued use of fossil fuels, it is interesting to hear the politicians suddenly thinking green.

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You have to love politicians. Jumping on the renewable energy bandwagon, they are suddenly coming up with all kinds of programs to solve energy problems.

In Australia, the Labor Party is throwing around a startling idea as part of its effort to win upcoming elections. In an effort to cut greenhouse emissions and create jobs the renewable energy industry, the Labor Party wants to convert all public schools to solar power.

To understand the motivation for making the proposal, one has to have a grip on what has been happening in Australia. Cutting to the chase, there have been allegations that utility giants are strong arming government agencies to prevent the implementation of green energy programs. Specifically, there have been

claims that government agencies are so in bed with large energy companies that scientists are being pressured and even gagged on renewable energy subjects.

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Uranium Recovery Converts Swords to Plowshares

Uranium recovery and uranium recycling have both become crucial to the nuclear renaissance. To support the growing demand for uranium, governments have begun releasing supplies of highly enriched uranium. This uranium is enriched in the Uranium-235 (U-235) fissile isotope. The level of enrichment can be 50 to 95%, and is used for navy nuclear reactor fuel and nuclear weapons. This material is called high-enriched uranium (HEU).

There is currently an excess of such material and a downblending pathway now exists which can provide a significant amount of fuel for commercial nuclear reactors. Commercial nuclear reactors use natural uranium and a variety of enrichments from natural to 5% U-235, known as low-enriched

uranium (LEU). LEU is typically produced from the uranium hexafluoride (UF6) gas processed through the gaseous diffusion plants that increase the amount of % U-235. The UF6 is derived from yellowcake, or uranium oxide purified from the mining process. The downblending process produces the same commercial LEU but through a different process, from HEU sources instead of natural uranium sources.

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