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Archive for May, 2009

May
02

Wind Generator Plans and Electricity Generated from the Wind. How Does it Actually Work?

Posted by admin

In 2009 a lot of folks are beginning to become more aware of the problems with the environment and are looking for ways to save money, and help our planet at the same time.

More and more people are starting to set up their own wind energy devices at home in order to do their part to help the environment, and keep more of their hard earned money in their pocket. For those of you who cannot justify a huge upfront expense to bring renewable energy into your homes energy grid,  some of the pioneers in the home renewable energy market have done an excellent job of creating do it yourself renewable energy guides for our benefit.

But before you start looking for a set of wind generator plans to construct your own wind powered generator, we will answer a couple of the most common questions we get and explain in simple terms how producing energy from the wind actually works.

Q- So. How is electricity generated from the wind?

A-  A tail fin orients the windmill blades to face the wind. Much like the wind vane you see that shows you which way the wind is blowing.

The wind blows against the windmills blades. These blades are designed to catch the wind in such a way that a positive pressure is created on one side of each blade and a negative on the other, much like an airplane wing. This coordinated pressure causes the blades to spin.

The spinning blades are attached to rotor that is connected to a permanent magnet style of DC (direct current) generator. The connection with the rotor is set up to spin the generator which produces electricity.

This electricity is then passed along through wiring into your homes energy grid.

Q- What happens to this generated electricity if you don’t use it immediately.

A- The short answer is that it is gone forever. Unless you store it for later use..

Q- So, how do you save the electricity so it is not wasted?

A- Batteries To The Rescue.

Deep cycle batteries, similar to those found in electric golf carts or forklifts, are often used to store this wind generated power for later use. The number of batteries needed and how they are wired together is dependent on several factors; how much power the wind generator produces and how much you will need to have on demand for your particular needs.

The exact plans for setting up the battery array is not really that complicated at all, but you should have a guide to follow to be sure you get it right.

Another question we get all the time is this;

Q- Is the direct current which is stored in the batteries capable of running typical household appliances?

A- The short answer here is yes. But only after you have installed an inverter, which is a device that converts the DC power to usable AC power.

This covers, in a somewhat oversimplified manner, the basics of how wind generated electricity actually works. There are also other components that are typically part of a windmill system.

When looking for wind generator plans, you should buy from an author who has actually built one for their own use. They will have the knowledge to be able to give you all the information you need to get started, as well as be around to answer any questions that you might have along the way. This will greatly increase the efficiency of the final product while reducing your frustration in the process.

If you don’t feel like trying to build your own wind powered generator from scratch you may want to take a look at some of these DIY Wind Turbine Kits, which will still save you a lot of money over a fully assembled or installed unit.

May
01

Pros & Cons Of Solar Energy

Posted by admin
solar energy

Every day, households around the world are using up the planet’s resources for energy. If this continues, these energy sources will be depleted quickly -unless alternative renewable energy sources are utilized.

One of the energy sources that modern technology has recently put to good use is solar energy. Solar energy isn’t anything new, but new technology advancements have placed solar power more into the mainstream, and it may one day be one of our primary sources of power. -

Advantages of Solar Energy

Since solar energy comes directly from the sun, it is not only renewable, but also accessible in any part of the world. As long as the proper equipment is utilized, unlimited amounts of solar power can be collected and put to good use.

Solar power is also one of the cleanest forms of energy, since it creates no pollution, and produces no greenhouse gases or waste products. For residential uses, the use of solar power minimizes negative impacts on the surrounding environment, making it a safer alternative to wind or hydro power.

Not only is solar energy non-pollutant, in terms of gases, but it also causes zero noise pollution - since there are no moving parts in any of the devices which are used to capture the sunlight. Due to the fact that no moving parts are used, maintenance costs are low as well - only occasional cleaning and periodic battery replacements are needed. Most manufacturers of solar panels provide twenty-year warranties for their equipment, guaranteeing long-life operation.

Solar panels placed on rooftops also double as a heat absorbers, slightly cooling the top area of the house which is directly below the roof.

Disadvantages of Solar Energy

The most obvious drawback of solar energy is its sole dependence on the sun. Once the weather becomes cloudy, or night strikes, energy collection comes to a halt. However, recent advancements of technology now allow the generated power to be stored in special batteries which provide roughly enough electricity to last a night.

This is why solar-powered devices, including flashlights, are gaining in popularity and are proving to be efficient energy savers. Solar panels can also be expensive, because of the materials that are used to create them. And even when these materials are taken out of the equation, the entire process, considering the other devices involved, can be a bit costly. This includes portable devices that utilize solar energy. But most of the cost involved is in the initial purchase and installation of a solar power system - not running costs.

Fortunately, there are some people who sell damaged solar cells, which are much cheaper. These damaged solar cells can be used to build fully functional solar panels, using the application of simple do-it-yourself techniques. Although in every part of the world, there is at least some point in time when the sun shines, it is also true that direct sunlight is needed in order to make the most of the sun’s energy - and to generate the highest amounts of power. This significantly restricts the placement of solar panels. And some areas in the world may receive little benefit, due to lesser sunlight.

What’s the Bottom Line?

More research and development continues to be invested into this growing technology, and that’s a good sign for the future of our households - as solar power may one day be used more frequently than other energy sources. Of course, solar energy isn’t perfect, but it makes a great complimentary addition to other energy forms.

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