Advantages and disadvantages of wind energy

The rapid depletion of non renewable natural resources and mankind has led to other sources of performance and endless energy trying to get their needs and requirements. Wind or wind energy is one of those energy sources for power generation purposes and helps us greatly to fulfill our needs and the growing demand for electricity.Today, many developing countries and developed countries like the U.S., Spain, India, Germany, etc, use wind power to generate electricity. Despite its worldwide use of the advantages and disadvantages of wind power! The following is a brief discussion of the same.
What are the advantages and disadvantages of wind power?Benefits of wind energy:Here are some of the ways that wind energy is advantageous for us.

• The greatest benefit may be derived from wind energy is that which produces electricity, but not released pollutants or noxious gases, such as by product lines. This therefore makes it a clean and safe energy.
• Wind energy is also one of the cheapest forms of energy available today and can by everyone, even poor farmers in rural areas are used.

How Diesel Two-Stroke Engines Work

If you read as a two-stroke engines work, he learned that a large difference between the two stroke or four times as much power the engine can produce. The spark plug turned on twice as often in a two-stroke engine-once for each revolution of the crankshaft, compared to once every two rotations in a four-stroke engine. This means that a two-stroke engine has the potential to produce energy as a double four-stroke engine the same size.
The article also explains two-stroke engine, gasoline engines times, in which the gas mixed with compressed air, is not a perfect complement to the two phases. The problem is that a loss of unburned fuel to each of the cylinders with the air-fuel mixture is calculated. The result is that the approach of the diesel engine, the only compressed air and then the fuel directly in the compressed air is a better match with the two-stroke cycle. Many manufacturers of large diesel engines then use this method to create high-powered motors.
The following figure shows the structure of a typical two-stroke diesel engine. In the upper part of the cylinder, usually two or four exhaust valves open at a time. There is also a diesel fuel injector (see above yellow). The piston is stretched, as in a two-stroke engine with gasoline, making act as the suction valve. In the lower part of the piston stroke, the piston covers the air intake openings. The intake air is under pressure from a turbocharger or a compressor (blue light). The oil in the crankcase is sealed and contains a four-stroke engine.

How Rocket Engines Work

But the biggest problem of all energy used just to get a spacecraft off the ground. That is where rocket engines comeRocket Gallery. Rocket engines are, on the one hand, so simple that you can build and fly their own model rockets very cheap (see the links on the last page of this article for more information). On the other hand, rocket engines (and their fuel systems) so complicated that only three countries have always been the job of the people. In this article we will see and understand how a rocket engine for a bit of complexity that surrounds them to understand.

Advantages and disadvantages of laser cutting

The laser cutting involves the use of a laser beam of materials such as wood, plastic, metal, rubber, etc. adapted This technology has become an important part of a manufacturing process.A white material involved is one of the main steps of a manufacturing process. This step is accurate and efficient, so that the successive stages of the manufacturing process can be performed properly performed. Unit of electricity production using a laser to do this. Laser cutting machines are equipped with computer-controlled programming that determines where and how the interface is integrated in the material. Although lasers have great benefits, they also have some limitations.

Here are the advantages and disadvantages of laser cutting.Advantages of laser cutting:

• Holds the workpiece in the correct position it is easier in the case of laser cutting, with respect to a mechanical shearing.
• Short obtained by laser cutting are extremely accurate and does not take long. Rather, the cutting process and the material is easily reached in less time than traditional scissors.
• as the section with the help of a laser beam is produced, there is no direct contact of the workpiece with a cutting tool, for which the risk of contaminating material.
• In conventional separation processes, the heat generated during cutting usually makes the material of the mold. In laser cutting, as the area of ​​heat is very small, reducing the possibility of deformation of the material.
• The laser cutting machines use less energy to cut sheet metal with respect to the technology of plasma cutting.
• This technology can be used to provide a number of materials such as ceramics, wood, rubber, plastics, and certain metals are cut.
• Laser cutting is extremely versatile and can be used to cut or burn be simple to complex structures in one piece.
• Benefit fabrication of devices with limited space available with the installation of a series of laser cutting systems, because one or two laser cutting machines are able to be used in the work of several other machines for cutting.
• Laser cutting is controlled by computer programs, thus saving considerable amount of work.
• Because the machine does not require human intervention, except for repairs and inspections, the frequency of accidents and injuries is reduced.
• efficiency of a laser cutting machine is very high, and required design replicas obtained are exact copies of each other.

Disadvantages of laser cutting

• Power consumption and efficiency depends on the nature of the laser for cutting and the type of section that must be carried out, is used. Usually includes the laser cut high consumption of energy compared to other technologies used for cutting.
• Cutting laser to cut material with a thickness of not more than 6 mm. The carbon may be up to a thickness of 6 mm and other metals can be cut with a relatively small thickness are cut.
• Laser cutting of plastic, can be expensive due to plastic emits gas when exposed to heat. For this reason, the entire configuration of a well-ventilated room, which can be very expensive. Furthermore, the gases released during the process of being toxic and can be fatal.
• Laser cutting can not be used for all types of metals can be cut. Metals such as aluminum and copper can not be cut with this technology, and its thickness is not within the limits of laser cutting systems.
• Production rate is not consistent when laser cutting is used. Will depend largely on the thickness of the workpiece, the type of material used and the nature of laser cutting.
• Setting regardless of the distance laser and the temperature can lead to the combustion of certain materials. Some metals tend to discolor when the intensity of the laser beam is not necessary.
• Human intervention is required only in case of trial runs and repairs. While these actions if by accident, a worker comes into contact with the laser beam, which can cause burns.

Conventional methods of separation are also good and cheap, but in spite of the difficulties associated with the laser cutting process are the use of this technology has gained tremendous popularity. This is because the quality of the results after laser cutting, a material obtained is much better than those obtained by other cutting methods.