With oil prices moving higher and higher, power costs tend to follow the same trend. Given that our daily life depends very much on the consumption of electricity, getting your power from alternate sources is an attractive option.

The sun, water, and even wind are possible sources of energy. What’s more, they are renewable sources of energy as they are continuously present in our environment. More and more people now care to set-up their own windmill at their homes. With the many instructions to build a windmill available out there, it is up to you to find the one that is easy to understand.

Here are some simple instructions to build a windmill:

Basically, there are several distinct types of windmills, based on the direction their blades rotate:

1. The Horizontal upwind, where the shaft stands horizontally and the wind hits the blade before the tower;

2. The Horizontal downwind where the wind hits the tower before the blade; and

3. The Vertical Axis, mounted on short towers and its blades are pointing upwards.

Essentially, a windmill has four parts that must be given extra attention:

- base
- tower
- blades
- nacelle

In constructing this structure, the main objective is to maximize the conversion of the wind’s energy into electricity. Therefore, it should be high enough to take advantage of the wind’s action in obstructed terrains – an average tower usually stands at 5 feet.

The base must be strong and heavy compared with other parts, to ensure a durable structure because it is the principal foundation. It is advisable to use materials like sandbags or concrete, and in the case of a five-foot windmill, the base must be at least 18 inches square thick and 20 pounds heavy.

The tower supports the blade in gathering wind energy. There are many approaches when constructing it. You can either use guyed lattice or steel and pipe tubings or make them using a jin pole or crane.

The nacelle connects the blade to the tower and contains copper wires and magnets that run the blade and help convert the wind’s energy to electricity.

The blade is the propeller used to capture the wind’s energy, so it is necessary that the blades are able to catch the flow of the wind easily, turning with the least potential resistance.

Materials to be used for these parts must be lightweight, so you can carve them from plastic or PVC pipes. Note that in strong winds and storms, the blades can pose a danger if separated from the structure, so be sure to lock in the blades securely, keeping safety precautions in mind.

Considering that a simple windmill could cost at least $40,000, constructing one for personal use can be quite expensive, but utilizing what is around you can help you save some money.

It is therefore recommended to recycle parts in order to reduce your expenses. Following these simple instructions to build a windmill will enable you to build one from scratch.

Windmills are just the beginning. To learn more about solar and wind power, go to Solar and Wind Power For Residential Homes or if you are looking for a simple way of building your own residential wind generator, see our Energy4Green Review.

The residential wind generator idea is gaining popularity worldwide, as living in this age and time has become quite expensive, with even the basic necessities becoming too costly to acquire. One of these necessities is our need for electricity. With fuel prices going up, everyone is looking for ways to lower their expenses to be able to afford electric bills.

Many are opting to either buy or assemble their own wind turbines, but are having some doubts and concerns. So here are some pieces of information that may be able to help satisfy the information needs of most people when thinking of getting a wind turbine.

- This device is usually installed above a high tower where it can gather kinetic energy from the wind’s motion and convert it into electricity through a generator.

- Normally, a home that has installed a wind turbine is continuously served by the turbine itself and by their local utility. If the wind speed doesn’t fall into the cut-in rate, which is 7-10 mph, electricity would then be supplied by the electric utility.

- The basic principle of wind turbines is that “as the wind increases, output for the turbine also increases while the current supplied by the utility is lessened.

- If there is excess electricity collected, it is automatically sold back to the utility, because residential wind generators normally have no battery packs.

- Small wind turbines could in fact lower power bills by 50 to 80 percent. The amount of money it can save depends upon the use of electricity, the average wind speed on site, and other factors.

- A residential wind generator is rather large and may not be suitable for urban or small-lot housings, as wind systems are sensitive to the speed of the wind in the area it is situated.

- Wind turbines are pollution-free, and a small type can actually offset nearly 1.2 tons of air pollutants and tons of greenhouse gases that cause global warming.

- A typical wind turbine system makes less noise than the average washing machine, and it also does not interfere with the television’s reception contrary to what others think, as their blades are constructed of wood, plastic, and fiberglass.

- Upon installing the turbine, there is no need to rewire the appliances in a home since wind turbines are retrofitted to any home without changing the wiring or appliances.

- With regard to towers, tall towers are necessary to prevent any hindrances that could prevent it from freely gathering wind energy. The most inexpensive type of tower would be the guyed lattice tower, while a hinged tower can be simpler to install and maintain. Most small turbines are not high maintenance, since they have very few moving parts, and can operate and last up to 20 years.

A residential wind generator can be a good investment, although the return through your power bill savings would only be visible after 6 months to 15 years. Another benefit is that a well-working turbine would increase in property value.

Windmills are just the beginning. To learn more about wind and solar energy, read Advantages and Disadvantages of Wind Energy or if you are thinking of building your own residential wind generator, see our Earth4Energy Review.

Solar Pool heaters can greatly reduce your energy costs. They’re more cost effective than either gas or heat-pump swimming pool heaters. You’ll be able to save on annual operating costs once a solar pool heater system is installed. Best of all, a solar swimming pool heater can be used in most climates.

The typical solar pool heater system consists of a solar collector, a filter, a pump, and a flow-control valve.

- The solar collector is the device which the pool water passes through and gets heated by the sun.

- The filter removes the dirt and debris before the water is pumped into the solar collector.

- The pump is the what circulates the water through the filter and solar collector, and brings it back into the swimming pool.

- And finally, there is the flow-control valve. It is either an automatic or a manual device, which redirects the water through the solar collector.

A solar pool heater system works in the following manner:

The water from the pool is pumped through the filter and then enters the solar collector, where it is again heated before it returns to the pool. In hot climates, the solar collector can also be utilized to cool the pool, by circulating the water at night.

Some solar pool collectors use sensors and a valve, which redirects water through the solar collector when the collector temperature is greater than the pool water temperature. When both temperatures are the same, the filtered pool water will not return to the collector but will simply return to the pool.

There are different types of solar pool heaters. They differ in the types of materials they are made out of. You will need to find out which type is best for your region’s climate, and how to use it.

There are glazed and unglazed solar collectors. If the temperature in your area reaches above freezing, then you’ll probably just need an unglazed solar collector. This is made out of heavy-duty plastic or rubber, treated with a UV light inhibitor. Unglazed solar collectors are cheaper than their glazed counterparts, because the parts are inexpensive, and their design is simple.

Glazed solar collectors are typically made out of copper tubing and aluminum plates with iron-tempered glass covers. These are quite expensive, but in colder weather, this type of system is more efficient in heating pool water than unglazed collectors are. Glazed solar collector systems can also be used as domestic hot water heaters. Both types of solar pool heating systems need to have freeze protection when used in harsh cold weathers.

As you can see, solar pool heater systems can be a good investment. You’ll save a lot of money in terms of energy costs, in the long run.

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For more information on solar pool heaters, and how to choose the solar pool heating system which is right for you, visit Solar Pool Heating or DIY Solar Pool Heaters.

Anna Williams is the webmaster of a website on Solar Power Products & Information.

Windmills were previously used in early times to pump water out of the ground to irrigate systems and to grind wheat. Through progressive technology, they soon found other useful purposes for these windmills. With a little human ingenuity, they have been made to generate electricity. But how do windmills works?

Wind power is a renewable kind of energy and it is a powerful source as well. It is considered as one of the most practical and perfect sources because it produces no emission and it is abundantly free. The best thing about the structure is that it can reduce the power bill of any home by 50 to 80 percent.

Basically this structure consists of 2 to 3 blades that are connected to a shaft. These blades are used to collect the wind energy that flows over them. The shaft meanwhile is wired into a generator, which then is connected to a battery. The generator is also referred to as the heart of such a mechanism, as it is the one that converts the energy collected.

Upon collecting and converting, a battery is needed for storing all the collected energy, which then can be coupled or linked into a home’s electrical system.

How Do Windmills Work – The progression:

- First of all, it reduces the speed of the wind using the blades, which work in the same way as airplane’s propellers.

- When the wind flows over the blades, these blades collect kinetic energy.

- Then the blades, which are connected to a drive shaft, turn slowly and send a lot of the turning force into the gearbox.

- The gearbox then modifies this turning force, and instead of turning slowly with a lot of force in every revolution, it goes faster with less force in every revolution.

- At that moment, the generator, which is connected to the gearbox, produces electricity through the many magnets and copper wires inside of it.

An important factor that plays a vital role on the way this machine works is the size of the structure itself, as the amount of electricity generated depends upon it. The bigger it is, the stronger it can drive the shaft, which means the greater electricity it can produce.

You might also notice that some windmills are situated on top of valleys and mountains. This is because the blend of hot and cold air can create moving air. Sometimes they are placed near bodies of water, because this also generates wind due to the change in temperature brought about by the sea and the sun.

One important fact on how windmills work is that a single turbine can generate 100 megawatts of electricity. Imagine then how much electricity a wind farm with large turbines grouped together can produce to provide bulk power to an electrical grid.

Learn more about wind energy by visiting
Advantages and Disadvantages of Wind Energy
and
Solar and Wind Power For Residential