Thứ Tư, 9 tháng 1, 2013

Why Should We Use Solar Energy?

We all know that Electricity has been here since the early 1900's. When it started, there wasn't much demand for it, First of all, because most people didn't have it in their houses, secondly, the only use for it was for light bulbs. Then came heaters, stoves, and then followed by electric appliances and everything else that work with electricity. well, I guess you know the story. I don't need to tell you what works with electricity.
Today the demand is so strong for electricity, we have to find other ways how to produce it. Did you know that Canada is the number one producer of electricity in the world? United States have to buy energy from Canada, because the demand is to strong, in fact California is one of the states who buy's the most electricity from Canada. In the 70s, an hydro electric plan was build in the north of the province of Quebec to produce power, thinking that this power plan would be enough for the next generation to come. Because population is growing so fast in North America, Canada had to build 3 more power plan. The problem is not building power plan! The problem is, you need water, lots of water to make the turbines turn, and when you build power plan you have to flood the territory, raise the level of the water, that mean kill everything that lives around.
I ear everyday, on TV, newspapers,magazines, that we have to save the planet. Did you know there's areas in this world who don't have Power, they don't even know it exist, but on the other part of the world we as humans are wasting it. There is an alternative to this problem, and a good one. We have it on the top of our head everyday. It Is Called Solar Energy.
Solar cells, or photovoltaic cells are often silicon-based pieces of material that absorb the sun's light. Not warmth, as in the thermal application Many of these solar cells are often combined in solar panels Numbers of solar panels can be combined and interlinked for greater power Solar energy excites the electrons in the solar cell and electricity is produced.
This electricity is in the form of direct current or DC . DC however is not useable for most common purposes.
So, next DC power is transformed through an inverter to alternating current, or AC at 120 Volt, a common-use voltage.
As you can see, this is how you can use the sun's light to create electricity. There's also another way you can heat your house or your swimming pool, and it's call solar thermal Technologies.
Solar thermal technologies (also known as active solar systems) involve the conversion of solar radiation into heat and include the use of pumps or fans to actively transfer the heat to storage or for distribution directly to its intended use. The key component of any active solar system is the solar collector, which absorbs the sun's radiant energy and transforms it into usable heat. Various types of collectors are used in solar energy conversion, depending on the application and temperature requirements:
Unglazed metal and plastic flat plate collectors are used for low temperature applications such as residential pool heating and ventilation air heating for commercial and industrial building . Glazed flat plate and vacuum tube collectors are used for mid-range temperature applications such as domestic hot water and space heating and cooling applications.
Concentrating collectors that focus the sunlight onto a much smaller area are used for higher temperature applications such as industrial process heat, absorption cooling, and large-scale solar thermal power applications to generate steam for electricity generation.
Everybody want to save money somewhere. Why not start to reduce your electric bill and be a part of those who think environment. Install a solar panels system for your house, or fishing camp and start to save money. If you want more info on how to install your own solar energy system, click on the link.

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