Can We Question That Wind Turbines Are An Answer For Business And Inhabited Buildings?
December 16, 2009 by Go Green Tips · Leave a Comment
Today less than a quarter of one percent of the power created in the UK is from wind fueled turbines or natural flow, according to UK statistics; the vast majority of the power is to be provided by natural gas and petroleum. We talked to David Hislop, a retired physicist, but now full time tutor, and he said: At present the equivalent of about one million residences are powered by wind powered turbines; the tutor went on to say that this stops approximately 3.6 million tonnes of CO2 to be made each year and also concludes in large reductions of SO2 and NOx. All of this is accomplished by just 1576 turbines. We asked another scientist, also now a full time academic tutor at a leading university, and he said it is clear from these conclusions that, from an environmental viewpoint, wind fueled turbines are a viable option as a source of fuel and an option that could not only be explored further but also implemented immediately. The catch comes however in the cost of the turbines and the sound and sight pollution.
The idea of wind turbines to be too annoying is unfounded. A vast wind turbine that powers fuel for a village worth of inhabited buildings is as annoying at 250m as having a refrigerator in your house; far less annoying than a car driving past on a nearby road and nobody complains when somebody thinks about owning a new vehicle. The noise made by the latest wind turbines, that take advantage of a magnetic system rather than a classic gearbox, is insignificant.
The consideration of a turbine to be unsightly is purely a matter of taste and would not be considered when a coal power station is so much more unsightly. However this factor does have to be considered where an area of outstanding natural beauty is concerned.
It has also been claimed by some that there is not enough wind in GB to power the country. However there is sufficient wind in GB to fuel the nation’s energy needs three times over.
From these concludes it appears that the main reason for rejecting wind fueled turbines must be cost and possibly also the amount of money that has already been ploughed into other sources of renewable power such as nuclear fuel. The cost of a wind turbine for a personal residence is as follows: Initial setup £12,000 - £14,000. Service £300-£500 a year. Annual saving £300-£700.
It can be seen from these means that the servicing costs may outweigh the annual saving on your power bill. This is obviously a major problem and means that the only reason for buying a turbine for personal use currently would be if you felt very strongly about the environment. If one were to have enough turbines the cost of servicing would be reduced per turbine and it is possible to see how this may be profitable. From a commercial viewpoint however the turbines would be profitable as there is greater tax relief from the government and as considered above the service costs would be reduced as it is likely that more than one turbine would be required.
Vertical Axis Wind Turbine
November 6, 2009 by Go Green Tips · Leave a Comment
There are two different types of wind turbine; Vertical and Horizontal. Each one performs their own function and they each of their advantages and their disadvantages. You should pick the one that is best for you and your needs. They do have one thing in common and that is that they produce energy from winds. They just do it in a different way. Vertical axis turbine has the main rotor shaft running vertically instead of horizontally. This direction can have its advantages and disadvantages. The advantage is the gearbox can be put in the bottom of the turbine, unlike the horizontal turbines. All the weight is not at the top of the tower.
It also does not need to be pointed in the direction of the wind. The disadvantages of vertical axis wind turbines is that there can be pulsating torques that can happen during each turn when the turbine is running in the same direction as the wind. They produce a smaller amount of energy from the wind.
Different Types of Vertical Axis Wind Turbines
Windmill with a rotation sail. This type of turbine is the newest out there as it looks like sails on a ship once it is up and running. The sails can expand or contract to the changing winds. There is three sails on it and the speed is managed through magnetic counter that expands or contracts these vertical sails. It has a control unit that will help to control the sails so the damage will be minimal. The sails might tear but the frame is durable and will last through the storms.
Aerodynamic turbine is made up of airfoil base that is designed to capture the kinetic energy flowing from an artificial current to the center. It can utilize most of the air mass that passes through by redirecting it over the upper turbines. It can respond to wind and also rivers, creeks, oceans or other free flowing water systems.
Darrieus Wind Turbines are efficient but because of their size and shape they can produce cyclic stress on the tower which can wear it out sooner. It features three blades that work well in higher winds. They are held up by external structures that are connected from the ground up.
Giromill is a type of meal that features three vertical blades. It is self starting so the maintenance is low. These types of mills a low blade speed but they can create a high performance and success in channeling the energy from every turn of the blade.
Savonius Wind Turbine mills have two scoops that are used for wind conversion. Some do come in three scoops that make it self starting. They look like long helicopter blades that are bent in a direction. This style and shape is to provide enough energy to be adequate.
Windstar Turbines has straight aluminum blades that are attached on each end of the rotating shaft. This windmill features more than one rotor and they each have their own dual braking system that has pneumatic disc brakes. They are designed for strong powerful winds.
The advantages to running a vertical axis wind turbine is that they are easier to maintain and reduce cost, can withstand almost all wind, low high, smaller and easier to transport. The disadvantages are they take twice as much time to produce efficient energy from winds, need to be installed on flat land, low starting torque, some models use guyed wires which can add stress to the bottom. The design and the preference of the consumer make the best choice when it comes to choosing the right one for you.
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Wind Power
November 5, 2009 by Go Green Tips · Leave a Comment
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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