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Showing posts from May, 2017

What Is Transformer

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The reason for transforming the voltage to a much higher level is that higher distribution voltages implies lower currents for the same power and therefore lower I 2 R losses along the networked grid of cables. These higher AC transmission voltages and currents can then be reduced to a much lower, safer and usable voltage level where it can be used to supply electrical equipment in our homes and workplaces, and all this is possible thanks to the basic  Voltage Transformer . The  Voltage Transformer  can be thought of as an electrical component rather than an electronic component. A transformer basically is very simple static (or stationary) electro-magnetic passive electrical device that works on the principle of Faraday’s law of induction by converting electrical energy from one value to another. The transformer does this by linking together two or more electrical circuits using a common oscillating magnetic circuit which is produced by the transformer itself. A

Working of Solar Panel

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Working of Solar Panel: The solar cells on the calculation and satellites are also called photovoltaic (PVC) cells, Which as the name implies (photo meaning light and voltaic meaning electricity), convert sunlight directly into the electricity. A module is a group of cells connected electrically and packaged into a frame (more commonly known as solar panel), which can then be grouped into large solar arrays. Photovoltaic cells are made of special materials called semiconductors such as silicon, which is currently used most commonly. Basically, when light strikes the cell, a certain portion of it is absorbed within the semiconductor material. This means that the energy of the absorbed light is transferred to the semiconductor. The energy knocks electrons loose, allowing them to flow freely.    PV cells also have one or more electric field that acts to force electrons freed by light absorption to flow in

Measurement of solar Radiation

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Measurement of solar Radiation: Solar radiation data are measured mainly by the following instruments: i) Pyranometer:       A pyranometer is designed to measure global radiation, usually on a horizontal surface, but can also be used on an inclined surface. When shaded from beam radiation by using a shaded ring, a pyranometer measure diffuse radiation. ii) Pyrheliometer:       An instrument that measures beam radiation by using a long narrow tube to collect only beam radiation from the sun at normal incidence iii) Sunshine Recorder:       It measures the Sun shine hours in a day. Solar energy can be utilized directly in two ways: i) By collecting the radiant heat and using it in a thermal system or ii) By collecting and converting it directly to electrical energy using a photo voltaic system.

Renewable Resources

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Renewable Resources: Renewable resources   are resources that are replenished by the environment over relatively short periods of time. This type of resource is much more desirable to use because often a resource renews so fast that it will have regenerated by the time you've used it up. Think of this like the ice cube maker in your refrigerator. As you take some ice out, more ice gets made. If you take a lot of ice out, it takes a little more time to refill the bin but not a very long time at all. Even if you completely emptied the entire ice cube bin, it would probably only take a few hours to 'renew' and refill that ice bin for you. Renewable resources in the natural environment work the same way. Solar energy is one such resource because the sun shines all the time. Imagine trying to harness all of the sun's energy before it ran out! Wind energy is another renewable resource. You can't stop the wind from blowing any more than you can stop the sun fro

We All Need Resources

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We All Need Resources: You can renew your lease when it runs out at the end of the year. You can renew your driver's license and license plate on your birthday. You can also renew a library book when your allotted time with it has expired. All sorts of things get renewed in our everyday lives when they 'run out' or expire. These are easy to renew because you don't have to create a new one, you just renew the ability to use whatever it is you are using. You can apply this same principle to natural resources. We use all kinds of natural resources: minerals, wood, coal, natural gas, wind, water, plants, animals and many more. Some of these are renewable and some are non-renewable. The difference is that some renew at faster rates than others, making them more sustainable than those that do not renew very fast

Future plant installations and job opportunities in US

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job opportunities in 2013

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Job opportunities:  In 2013, approximately 6.5 million people were already employed in the renewable energy industry worldwide, a new study by the International Renewable Energy Agency (IRENA) reveals.  ‘ Renewable Energy and Jobs – Annual Review 2014 ’  underlines the important role that renewable continue to play in employment creation and growth in the global economy.
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Job opportunities: Here is small view about the career opportunities in case of Renewable sources of power generation according to 2012. In future it may increase to a greater extent.      

Usage in India

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Usage in India: The importance of increasing the use of non-conventional or  renewable power was recognized in India in the early 1970’s. There are four major areas of renewable energy being tapped for power generation. These are solar energy, wind energy, Biomass and small hydro. 1. Solar Energy:  Solar energy in India is utilized thorough Photo-voltaic route and Thermal route. Solar Photo-voltaic (SPV) technology enables the conversion of solar radiation into electricity without involving any moving part like turbine, etc. A BHEL made SPV battery charging system was successfully used in the Indian Antarctic stations at Dakshin Gangotri and Maitri. The Biswanath Rail station in the Bangalore Chennai section is being served by solar energy based electricity. 2. Biomass:  Power generating systems based on biomass combustion as well as biomass gasification were launched in different centers in India. 3. Wind Energy:  Wind Energy is being used for power genera­tion. A wind gener

Wave Power

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Wave Power: Wave energy is produced when electricity generators are placed on the surface of the ocean. The energy provided is most often used in desalination plants, power plants and water pumps. Energy output is determined by wave height, wave speed, wavelength, and water density. To date there are only a handful of experimental wave generator plants in operation around the world. The articles on this page explore the world of wave energy and its possible applications.

Hydro electricity tracking

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Hydro electricity tracking: A generating station which utilities the potential energy of water at a high level for the generation of electrical energy is known as a hydro-electric power station. Hydro-electric power stations are generally located in hilly areas where dams can be built conveniently and large water reservoirs can be obtained.  In a hydro-electric power station, water head is created by constructing a dam across a river or lake.  From the dam, water is led to a water turbine. The water turbine captures the energy in the falling water and changes the hydraulic energy into mechanical energy at the turbine shaft.  The turbine drives the alternator which converts mechanical energy into electrical energy.  Hydro-electric power stations are becoming very popular because the reserves of fuels and oil are depleting day by day  They have the added importance for flood control, storage of water for irrigation purposes.
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Wind energy tracking: Wind energy can be collected through the following turbines ·          Horizontal axis wind turbine: ·          Vertical axis wind turbine:                                              When compared to vertical axis wind the horizontal axis wind turbine is commonly used type     It is a turbine in which axis of the rotor’s rotation is parallel to the wind stream and the ground. It is built with a propeller type rotor on a horizontal main shaft. It may be two (or) three or multi blades. The rotor converts linear motion of the wind into rotational energy that is used to drive a generator.       The basic principle is that flow of air is parallel to the rotation axis of the turbine blades. The wind passes over both surfaces of the blade creating a low pressure area above the air foil. The pressure differential between the top and bottom surface results in aerodynamic lift. The blades of the turbine are constrained to move in a plan

Solar Energy Tracking

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Solar Energy Tracking: The solar cells on the calculation and satellites are also called photovoltaic (PVC) cells, It works on Photo electric effect which as the name implies (photo meaning light and voltaic meaning electricity), convert sunlight directly into the electricity. A module is a group of cells connected electrically and packaged into a frame (more commonly known as solar panel), which can then be grouped into large solar arrays. Photovoltaic cells are made of special materials called semiconductors such as silicon, which is currently used most commonly. Basically, when light strikes the cell, a certain portion of it is absorbed within the semiconductor material. This means that the energy of the absorbed light is transferred to the semiconductor. The energy knocks electrons loose, allowing them to flow freely.    PV cells also have one or more electric field that acts to force electrons freed by light absorption to flow in certain direction. This flow of elec

Renewable Sources

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ENERGY RESOURCES:          Energy sources can be classified into two types. They are renewable and non-renewable sources of energy. Non renewable:         Non renewable resources, such as fossil fuels and nuclear material, are removed from the earth and can be depleted. These resources have been the most used type of energy in the modern era. i) Coal:       Coal is a non renewable fossil fuel produced worldwide. It is formed when millions of years of pressure and heat turn the remains of prehistoric forests and swamps into coal. Coal is taken out of the earth either by deep mining(tunnelling underground) or strip mining(digging out layers of earth). It exists in different grades or qualities.       Coal is used predominantly to produce electricity and to provide fuel for industries that require large amounts of heat. Production of steel, cement and paper all related on this industry. Coal traditionally has been used for heating many homes and businesses. ii) Nuclear ene

Welcome

H i viewers, As you all know that demand for electricity is increasing day by day but amount of power generated does not reach the demand. Also the Non renewable sources like coal, oil resources are not available in greater extent in future. So we want to think of Eco-friendly which does not affect atmosphere while generating electricity they are Renewable Energy sources ....We have made many efforts in collecting the information regarding it. Hope that this information makes change at least some viewers and increase the usage of Renewable sources