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Great Locations for Wind Turbines

Bob — Tue, 27 Apr 2010 15:00:03 +0000

Wind turbines are used for several reasons but the main reason is to generate energy from the wind. This may sound difficult but it is possible. You experience energy from the wind whenever someone runs past you quickly. A second after they pass you can feel the wind from them going by. This wind that you feel if produced in a great amount can be converted into energy. You may have seen the tall turbines standing in the fields when you drive by. There is the older classic model windmill that helped to crush grain when the windmill blades would turn, it would turn a mechanism inside which was attached to a device that would crush grain for flour. There are several different locations that are perfect for the wind power and depending on where they are as to how much energy they produce.

OffShore

Turbines can be placed offshore in order to produce energy from wind in the air and from the water. They don’t bother the view as much when they are out on the water and the noise that they make cannot be heard on land. The average wind speed is higher on the water because the water has less surface roughness and can use every part of energy from the wind. There are several different locations today that you might see wind turbines offshore and there are more building in the future. The one main complaint with people and turbines is the noise they make. It is constant and annoying to some. The other complaint is that they are tall and not pleasant to look at.

While all of these are true the main reason for wind turbines is to find an alternative to using fossil fuels and other non-renewable resources to produce our power. When a tower is built offshore it may cost more money in the long run because the towers need to be higher so there will be no restrictions. Turbines access power through undersea cable which may use high voltage direct current. The sea salt may also cut down on the length of time these turbines stay in shape.

Near Shore

These turbines can be seen but not heard. They are on water so they can produce enough energy compared to being totally on the land. Because the sea shore lines are considered to be very windy due to the tides coming in and the wind on the water, it becomes the perfect location for a turbine. There are issues and concerns with how wildlife is using these towers and zones for their nesting and habitats. There is another concern that the shoreline wind farms are not in the best interests of those who wish to come to the shore line to visit. It becomes a sight to see and hear the generation of power through these wind mills. The size of the towers can be minimal but this causes controversy as well because the smaller the tower the lesser amount of energy to produce.

Off shore and near shore are the choices we have. There are advantages and disadvantages to each one. We have to weigh the results with the problems to see which way may be best for everyone.

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Wind Power

Bob — Sat, 10 Apr 2010 15:00:02 +0000

Wind power is taking the energy generated from the wind and using it in more productive ways. Wind turbines are a machine that can transform the kinetic energy found in wind and convert it into mechanical energy. Mechanical energy works with kinetic energy to balance into the mechanical system. When the mechanical energy is converted into electricity it can be called a wind turbine.

There are two different types of wind turbines; Horizontal axis and Vertical axis. The most common of these two are the horizontal axis. Horizontal axis features the main rotor shaft and generator at the top of the turbine. The horizontal axis is pointed into the wind. Most of these horizontal axis have a gearbox that allows the blades to turn quicker to generate more electricity. The tower is what provides turbulence. The turbine can be pointed somewhat upward and stand well above the blades. The blades are made of durable material capable of withstanding high winds.

When you see these turbines in the field you may think that they are no longer helpful but there are several people who believe in using them still. Horizontal axis wind turbines can either turn upward or downward. If they choose to turn the blades upward, they don’t hold good together for longer periods of time. They begin to crack and breakdown in high winds. When the blades are downward facing they stay in line with the wind longer and they can outlast through the high winds without breaking. Because they are so durable it keeps the cost down as well.

Types of Horizontal Axis Wind Turbines

Windmills Consists of four or more blades, usually short, and can wooden blades. These were used to grind grain. As the winds picked up it would rotate a mechanism inside allowing it to run the grain through a mill crushing it.

Rural Windmills was originally from Australia but later moved over to the USA. Farmers found that this type of windmill was good to pump water and electricity to the barns and fields. This windmill had several blades and can still be seen today in fields. They were constructed of metal usually in order to carry electricity for lights or maybe a radio.

Modern Turbines are what we have now standing in fields. They feature three blades that are pointed at the ends. The reason for their unusual shape is because they have been proven to exceed wind velocity up to 6 times more, allowing for high efficiency and reliability.

The advantages of this type of wind turbine include stability, tallness, bendable, durable and strong. The disadvantages my include cannot operate well close to the ground, hard to transport over sea, difficult to install, not in big demand, there are concerns with how they affect radar, structural damage done with storms and wear.

There are good points and bad points to owning these types of turbines. They have been proven to work and you can have one or thirty one out in your field. They do help to generate electricity and other great things that we would normally have to go without.

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Storing Energy

Bob — Sat, 27 Mar 2010 15:00:37 +0000

We have come to rely completely on energy. We use it in almost everything we do; we live in it, use it for all our modern conveniences and more. Without energy we wouldn’t know what to do. In the past, before energy, there were lanterns for light and matches and wood for heat. That was the only options people had. When power was accessible to everyone by running power lines through cities, towns, residential areas to allow everyone to tap into the new generation, people were skeptical as to how this would affect everyone in the future.

Over the years, appliances became energy friendly, which made for less manual labor and more free time. Wash machines, dryers, dishwashers and the latest in cooking stoves that no longer needed wood. These were all great inventions and although people were skeptical they still took advantage of these appliances. Today we have the worry of saving the energy that we know and love so well. Our energy is fueled by non-renewable resources which will allow the depletion of these resources slowly and over time where we won’t realize it until it is gone. We need to find an alternative to the way we power our energy but we also need to store the energy that we already have.

Solar energy has been tested and experimented with as we learn more and more about how to conserve and store the natural heat from the sunlight. We all know how effective it is and why it is something that we should work very hard at conserving. Storing the solar energy can mean endless usage of water and other necessities by using conservative methods of saving energy.

Thermal mass systems are the process of using natural resources to make material that will store solar energy. This type of storage uses renewable resources from the earth, such as dirt, water and man made resources such as concrete to help store energy if only for a short period of time. Thermal mass can help heat water at night or heat your home long after the sun goes down or on cloudy days when the sun doesn’t peak through the clouds at all. These need to be worked on because there is no extensive long storage capability using solar power just yet.

Then you have the thermo-chemically phase which uses types of devices to store heat. Some examples of this type of storage includes

Paraffin wax inside of a storage tank. When the paraffin wax is cold it is solid but when it is heated it is a liquid that can help hold heat for a very long time without cooling it down. As the paraffin wax cools it becomes hard which can hold the heat in longer.

Eutectic Salts are inexpensive and can store heat in a heating system which will distribute the heat evenly and lasting hotter longer.

Molten Salts are an effective way to store solar energy because it allows the heat to remain hot without being non-flammable and cost effective. During the time that the storage tank is heating up, the salt mixture is heated and then used to make steam.

Rechargeable batteries can be a great way to store energy. This type of storage allows the power source connected to the battery maintain its power. Lead acid batteries are the more common battery used for this type of storage.

As you see there are several ways that we can store natural energy we just need to learn how to make these methods more practical and efficient. When we figure it out we will have an unlimited supply of natural heat.

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Ways to use Solar Power for Heat

Bob — Sat, 13 Mar 2010 15:00:52 +0000

We have become accustomed to turning a dial or pushing a button in order to have heat. These ways are nice but they may be inconvenient as well. Heating homes, schools or businesses with solar energy is not only easy but cost effective as well. There are several ways that we can capture the sun’s heat even in winter times. In order to capture the sun’s heat you need a solar source. This source can be something that will attract the sun rays but trap the heat from it when it enters the source. A good example is a sunroom.

These rooms are attached to a home or a building and are constructed of glass panels from the floor to the ceiling. It is usually facing the morning sun in order to get the full affect of the heat. When the sun shines into the room the glass allows the sunrays heat the furniture and everything in the room. These areas become the source that holds the heat in so that it will not escape back out of the glass. This type of heating is natural and can be very efficient if it is constructed correctly.

Other forms of solar power heat are:

– Thermal mass that absorbs and holds in the heat. It traps and holds heat while the sun is shining and disperses the heat when the sun goes down.

– Trombe Wall is a natural solar heating and ventilation system that uses air channels to hold the heat between a glass object and a thermal mass that is facing the sun. The sunlight gets trapped and stored inside this wall and is then circulated though vents and the top and the bottom of the wall. The wall radiates the heat.

– Transpired collector is also a wall that is used facing the sun. The wall absorbs the sunlight and heats the air when it enters into the ventilation system.

– Solar Cooling is a great way to ventilate a building. It absorbs the solar heat and cools it making ice with a solar powered steam engine that is attached to a cooling device.

– Solar Chimney is also a solar ventilation system. It is made of a thermal mass that is hollow inside. The chimney will warm the air inside the chimney and causing the heat to rise. The rise allows the air to circulate and vent properly.

There are several ways that we can provide heating and cooling to our homes, businesses, buildings or other structures that need to be heated. The ways listed above are by using all natural material that will pay off in the long run when you have heat using the sun and not an artificial heating source that may be produced by non-renewable resources. We all need heat no matter what. We need to find out what ways we can save the heat from the day to keep our house warm at night. Not only does it work for heating but also cooling as well.

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What is Solar Energy?

Bob — Sat, 27 Feb 2010 15:00:05 +0000

In order to know where to find solar energy you must first know what solar energy is. Solar energy is energy from the sun. When the sun is shining solar energy is being produced as it sends the heat radiating to the earth. You can find solar energy anywhere or in anything that the sun can shine on. There is a way that you can save the sunlight in order to provide heat during the cold, which is what millions of people have done throughout the years. It started thousands of years ago when people where able to use a thick lens or magnifying glass on an object that would attract the sun’s rays on that particular object and could get so hot it would catch fire. This gave a new perspective on how strong the heat from the sun really was.

The problem with capturing the sun’s heat is the fact that when it reaches the earth’s surface it does not go to one particular spot. It is spread evenly over the earth where the sunlight is able to reach. When this happens you may find it difficult to heat something using only the sunlight. Although the area or object may be hot if left in the sun too long it will not reach the full heating potential of the sun’s light.

In order to use the heat efficiently to heat a room after the sun goes down or when the sun is unable to shine because of clouds you will need to use a source that will attract the heat to one particular area. This source is called a solar collector. The solar collector attracts a lot of sunlight to one particular area allowing the sun to pass through the source and into the space. The objects in the space absorb and hold the heat from the sunlight and trapping it so it will not get back out with the help of the source. Glass is a great solar collector because it allows the sun to pass through it and into the space but the heat from the sun can rarely escape leaving the space under the glass to become warm or hot from the heat. The objects in the space help to hold the heat as it comes in so that the space will stay warmer longer. This allows the area to be heated using solar power.

Because glass is a natural solar collector it makes it great to put into a greenhouse or a sun room. The glass attracts the sunlight and traps the heat inside so that they temperature in the greenhouse or sun room remain warm even at night when the temperature outside may be cold.

Solar energy can be found anywhere the sun shines but in order to fill the heat you must have direct sunlight for an extended period of time. If you just use the morning sun to heat your home your house may not stay warm through the night.

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