02/01/2014 - 01:00
Renewable Energy Development Institute - REDI

Wind mills have, in fact, been around for ages. However, in the past few years’ the rapid growth of technology has led to the modernization of windmills from the wooden, medieval like strucutres we see as artifact’s and in old paintings. To the steel giants of modern times that are pioneering a fashionable and commercial ecological come back in a more conscientious modern day initiative that exists today. In a more than ever globally orientated society we are searching for new means of extracting energy. Yet it is nature’s forces which will prove pivotal to the encroachment of this device in our future. As a people we are starting to look further at our intention’s to continue to invest in an ecological friendly way to preserve our natural habitat whilst finding new and sustainable forms of energy which do not pollute our planet.

Yet, the device looks pretty much the same as it did in medieval times and the mechanism’ are still pretty much the same. The device is simple and a competent energy maker. It uses the kinetics of wind, which when its force conducts through the turbines into a circular motion rotor it thereby converts this kinetic generation into an established form of usable electricity that is ready to use. The wind turbine is an essential element and a basic component of the windmill’s operation. Stereotypically, the rotor is mounted on a low speed shaft and it usually has three blades constructed from fiberglass which are reinforced by polyester. Indeed, the rotor is able to rotate at velocities of 15-30 rpm. This velocity is increased with a transmission of 1500 rpm.

The most important feature of this windmills construction is known as the nacelle. It controls the generator, the shaft, the control system, whilst monitoring its power generation, checking its cooling systems, as well as its lubrication the systems and its’s brakes. The whole construction is located in a steel tower which boasts a height of anything between 30 to 100 meters high.

At the top of these daunting tower’s lies the emplacement of the motor and the gear train. There job is to rotate the rotor and the nacelle levering it in whichever way with the direction of the wind’s force is propelled.

The control system is created to prevent mechanical damage of the construction. This system also enables self-actualization of the windmills at full potential because it can work in any direction the wind blows.

As far as wind turbines go there are two types of wind turbines. The first has a vertical axis of rotation as well as a horizontal axis also for rotation. This primary example has the ability to increase its forward velocity or resistance force. Its name derives from the fact that the blades are mounted on a vertical shaft.

They also take on specific shapes usually twisteand bend to a formation suitable formation for the turbine’s axis. However, this type of turbine is not often used due to its low rate of efficiency.

Besides, it is not also suitable for electricity production because it achieves low speed production. Alternatively more than 90% of all wind turbines are of a horizontal construction. Although they look the same, as they were described above, the position of such turbine’s is important since it must turn exactly to the wind’s direction to provide maximum engagement to be converted into power.

The size of such a structure usually depends on the energy which it is meant delivered either on land or sea. Larger wind turbines may be 100 meters in height making them easily visible. Due to their size they can become an eye saw on natural terrain. The large turbines generate a lot of monotonous noise which can be become burdensome to indigenousness communites living there as well as to nature’s dwellers such as aeronautical beings.

Power generated from the windmills can range between 0.1-100 kW. Smaller turbines suite better in locations where less favorable wind conditions occur. Consequently they have lower energy requirements. This solution can be used in hard to reach areas because these turbines can be easily moved from place to place.

Earlier on the omission of monotonous humming was mentioned, which occurs during a large wind turbines mechanization of energy. The noise itself comes from air resistance met by the rotator’s blades whilst in motion.

The hum is also caused by the power transmission system not only the rotator, the gearbox, the generator and accumulation of such factors like the size of turbine, as well as outdated technology and low level aerodynamics of the blades. The problem can be resolved by using modern technologies and locating them far away from inhabited areas which will reduce their negative impact it can have on inhabitants. Such as offshore wind turbines which exist today where wind would be easier to harness due to the contors which occur in landscape and the typical climates of high winds at sea.

Wind is undeniably a feesiable and forward thinking renewable energy source and owing to the use of modern technologies in building new features and better designs we can be witness the emergence of increasingly sophisticated wind mills. From simple wooden machines to ravishing, steel giants wind mills make for an appetizing look into the future’s energy and especially renewable energy supplies renewable energy resources.

People are forever trying to find new sources of renewable energy, so it isn’t surprising that they are especially interested in water and its versatility. Accordingly, much effort has been directed into obtaining energy from tidal and wave power, which are defined as circular movements of water molecules caused by wind that moves water surface through friction.