Wind Turbine Generators – Free power from mother nature. Maybe we could install it now


Wind generators are one of the most reliable forms of alternative power sources on the planet.
They are made to manufacture power by transforming the kinetic energy of the wind into mechanical energy, which is then either harnessed directly (in the case of windmills, for example, which were used to change wheat into flour, or to pump water for farming) or coupled to a generator that creates a DC output that can be used in a more general sense. In this article I will be talking about the type of wind generators that produce electric energy, as this is more useful to us in our daily lives.

Wind turbines are basically large windmills, with gigantic blades that rotate in the wind and produce power from the conversion of the winds force. Wind turbines are manufactured from plastic, aluminium, steel and numerous other space age metals.

Wind turbines have a few negative impacts on the environment. They are very visible, and quite unsightly since they must be put in proximity to windy, open terrain to be useful – attempts to locate them off the coast have been met with great success. They require a great deal of energy in their manufacture, energy which is typically fossil-based, and therefore it can take a considerable amount of time before they are positive in terms of total carbon emissions – this time can be anywhere from 2 to 5 years. Wind turbines are linked to the mauling of rare species of birds that can be mutilated as they pass through the turbine fans during migratory passages.

With all of the downsides aside, wind turbines should be a choice when talking about a broad plan for renewable energy. Once erected, wind turbines are amazingly efficient in a larger sense – they generate power from a natural, eco-friendly renewable resource, without the hidden social or environmental penalties that we incur with the use of fossil fuels – theres no need to mine for fuel or to transport it – there are no global warming pollutants created, and no need to store, process, or to dispose of toxic wastes.

At the small side of the scale, turbines can be as tiny as 5 feet in diameter and are capable of only a few hundred watts. On the high end of the spectrum, turbines can be as huge as three hundred feet in diameter and are capable of generating two to five megawatts of power.

Similar to photovoltaic solar power generation, there might be rebates available for construction, and excess energy can be sold back to the power company.

Wind velocity is impacted by topography and increases with height above the ground, so wind turbines are generally installed on top of large towers. In a typical application, the wind turbine sits on top of a tall tower and generates low voltage DC which is used to charge a battery store – this stored potential energy is ultimately utilized by routing it through an inverter that changes the low voltage direct current power into utility voltage alternating current electricity that can be used in household applications. By concentrating a lot of turbines into wind farms a substantial amount of electricity can be stored and utilized, perhaps for a whole city or town.

Because the wind doesnt blow all of the time in many areas, wind turbines are used as adjuncts in hybrid configurations with many different technologies like photovoltaic panels, and diesel generators to provide a consistent source of electricity.

Dissimilar to fossil-fuel stations, wind turbines are clean and green – they dont create the carbon dioxide emissions that are causing greenhouse gases or the SO2 emissions that cause acid rain.

Todays turbines are divided into 2 categories, namely horizontal turbines and vertica turbines. Todays horizontal axis wind turbines are actually far better at capturing the wind than vertical axis turbines given the same amount of swept area (which is the diameter of the circle traced by the outside tip of the rotor blades).

Industrial Diesel Engines

Industrial Diesel Engines

Gate to Cruachan Dam
Source: Flickr


Industrial diesel engines are any engines that are used
for industrial purposes that run on diesel.
Industrial
diesel engines are used to power a major portion of
industrial machinery, from motorbikes to bulldozers,
generators, and even forklifts and trucks. They range
in size from a few pounds to a few tons, with a various
amount of power.

The use of diesel engines is mandated by several large
organizations. All NATO machinery for example, runs on
either diesel or aviation grade kerosene. At the
current level of technology, fossil fuels, and especially
diesel are the most economical and convenient means
of supplying power to a variety of equipment and
even backup generators.

All industrial diesel engines can be either air cooled
or water cooled. The smallest engines for residential
purposes will typically provide about 10kW and cost
a few thousand USD. These smaller scale engines power
much of the mobile machinery we see around us on a
daily basis, such as trucks, farm equipment, small
boats, stationary process machinery, earth movers,
and so on.

The medium scale industrial diesel engines can provide
levels between a few hundred kW and a few thousand
kW and are sold for prices in usually the thousands
of dollars. These types are used in larger machinery
such as larger mining equipment, oil rigs, trains,
large boats, military equipment, and much more.

The largest of industrial diesel engines provide 10,000
to 80,000 kW, sold in the millions of dollars, and
are used for ultra heavy equipment, electric power
generation, and the largest of ships. Large industrial
engines can be up to 49 feet side and run on low
grade diesels. In places such as China, where there
is a high demand for de-centralized power sources,
these types of engines are often utilized.

Industral engines are classified in terms of their
speed, or RPM (Rotations Per Minute). High RPM
engines are normally used for the lighter, more common
applications, such as trucks and other types of land
equipment.

Medium RPM engines are generally used for power
generation. Low RPM ranges, and high torque engines
are used for the biggest type of equipment, such as
marine equipment and applications.

For the most part, industrial diesel engines can
vary in terms of size and performance. Chances are,
you’ve either seen or used industrial equipment at
some point in time. Although they cost a lot of
money, they are the way to go with bigger equipment
for getting the job done right the first time.

The Ins And Outs Of Diesel Generators

The Ins And Outs Of Diesel Generators

Perkins generators
Source: Flickr

Generators are used for electric power generation. Two categories of diesel generators are basically available in market- one is portable generator and the other is standby generator. Diesel Generators are mostly used to make sure that electric appliances can be run when there is a power failure. Standby diesel generators are mostly used in homes and offices and installed outside the house or office building. These are plugged in home wiring or electric power circuit. These can automatically detect power failure and start supplying power with in moments. Portable diesel generators are used on sites where there is much less supply of electric power and they can only run few small appliances like refrigerators, televisions and turnaces.

Diesel generators use comparatively less fuel and thus are more fuel efficient than power generated by gasoline or natural gas. For every liter of fuel consumed, diesel generators can run 2 to 3 times more efficiently than natural gas engines. There is no need of frequent maintenance for diesel engines, but gasoline engines need more frequent maintenance. Most diesel engines designed with water-cooled engine up to a speed of 1800 rounds per minute. This makes sure that the engine is durable, and makes it most dependable of all generators.

Unlike other natural gas generators and gasoline generators, diesel engines are very safe to use because they work on direct injection principle and they do not have any spark plugs. The unavailability of spark plug keeps them safe from fire. Diesel generator has a better shelf life. This is the least flammable source of fuel, hence can be stored for more time.

The fuel for the diesel generators is available at all gas stations and can be collected in comfortable cans. Main problems in case of diesel generators are: it is very hard to start them in cold weather, they are noisy and emit more smoke. Home diesel generators may cost $ 800 for 4 kilowatt to $10000 for a 15-kilowatt depending upon the rating, voltage consumption, quality and brand name. Diesel generators can also be used in industrial purposes. For industrial purpose they are available in range of 500 kilowatt to 2000 kilowatt.

Fuels such as diesel, gasoline, natural gas, or propane can basically power home generators. Some models of diesel generators also designed with multi fuel capabilities. The fuel choice of will depend on availability of fuel during emergency times.