Wednesday, December 30, 2009

Solar power is the generation of electricity from sunlight. This can be direct as with photovoltaics (PV), or indirect as with concentrating solar power (CSP), where the sun's energy is focused to boil water which is then used to provide power. The solar power gained from photovoltaics can be used to eliminate the need for purchased electricity (usually electricity gained from burning fossil fuels) or, if energy gained from photovoltaics exceeds the home's requirements, the extra electricity can be sold back to the home's supplier of energy, typically for credit.[1] The largest solar power plants, like the 354 MW SEGS, are concentrating solar thermal plants, but recently multi-megawatt photovoltaic plants have been built. Completed in 2008, the 46 MW Moura photovoltaic power station in Portugal and the 40 MW Waldpolenz Solar Park in Germany are characteristic of the trend toward larger photovoltaic power stations. Much larger ones are proposed, such as the 100 MW Fort Peck Solar Farm, the 550 MW Topaz Solar Farm, and the 600 MW Rancho Cielo Solar Farm. Solar power is a predictably intermittent energy source, meaning that whilst solar power is not available at all times, we can predict with a very good degree of accuracy when it will and will not be available. Some technologies, such as solar thermal concentrators have an element of thermal storage, such as molten salts. These store spare solar energy in the form of heat which is made available overnight or during periods that solar power is not available to produce electricity.

Thursday, December 10, 2009

It seemed like it would only be a matter of time beforeToyota would jump into the market of using renewable energy to charge a car and they have done so in a big way. The solar charging station by Toyota will be put on display at the Tokyo Motor Show 2009. While there are other charging stations on the market for electric cars, the fact that this one is solar powered has the industry abuzz in anticipation. The solar charging station by Toyota almost looks like something that you would have seen in one of the old sci-fi movies, but this is the real deal. It works by collecting the suns energy through solar panels and then stores the energy in a battery that is later used to charge and power the vehicle. This is just another great innovation that is pushing our world to a 'greener' lifestyle and will use renewable energy in yet another every day application.

When we think about going solar we make a mental picture of large heavy panels adorning one’s rooftop. But researchers are trying to get rid of bulky solar panels. They are aiming to achieve this feat with the help of zinc oxide nanostructures grown on optical fibers and coated with dye-sensitized solar cell materials. Researchers at the Georgia Institute of Technology have built up a new kind of three-dimensional photovoltaic system. This three-dimensional photovoltaic system will not be heavy and it will not occupy a place of prominence on rooftops; it can be hidden from the view. No Comments
Solar power is produced by collecting sunlight and converting it into electricity. This is done by using solar panels, which are large flat panels made up of many individual solar cells. It is most often used in remote locations, although it is becoming more popular in urban areas as well. This page contains articles that explore advances in solar energy technology.
Solar refrigeration units can be provided to each village dispensary where various medicines including the anti venom injections are provided. Water purification plants and Water Desalination units provide supply of clean portable drinking water to the users.
Solar energy is a potentially available renewable energy source in this region. This source can be utilized as an excellent alternative to fossil fuels for these areas. Solar energy resource is planned to successfully utilize for household applications and electrification of remotest villages of these areas. The outcomes of this program are social uplift, betterment and provision of basic amenities of life.

Monday, September 14, 2009

Solar energy, provided by the sun, is constantly replenished and not produce harmful pollution unlike fossil fuels. Solar energy may be used passively, such as to heat and light buildings, or technology may be used to harness the sun's energy by collecting it and transforming it to generate electricity. Current technologies include photovoltaics, concentrating solar, solar hot water, and more.

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Every day energy from the sun travels to Earth in the form of electromagnetic radiation, kind of like radio waves but on a different frequency. After it passes through the Earth’s atmosphere, where some of that radiation is absorbed, on a clear day there is typically 1000 W/m2 available on our surface. That may sound confusing because it seems like an immeasurable thing, but usually the amount of available solar power is expressed in units of energy per time per area unit, so how much solar energy is available to be converted into electricity on a meter of surface every minute, hour, etc. This amount obviously will differ depending on where on Earth you are. For example, you’re definitely not going to get as much power at the South Pole as you would near the equator, and not all of the solar energy that hits our surface can be converted to electricity.

In these days of escalating oil prices, it’s becoming extremely difficult for a common citizen to pay off monthly electricity bills. The bills keep soaring day by day and there seems to be no respite in foreseeable future. These bills can be reduced by resorting to other methods of generating electricity, solar being one of them.

This article dwells on the discussion regarding production of electricity through solar means and discusses a cost-effective strategy to achieve this end.

At yesterday's Board meeting the Supes passed some solar energy contract that leases land to a company to build solar panels and sell sunshine back to us. Or something. I haven't written about this issue because more astute writers all over town like Rebecca Bowe, Bruce Brugmann, Julian Davis, Marisa Lagos, Chris Rogers, John Upton, and Benjamin Wachs have already covered it.
No, today I write to describe to you how all this went down at the Board yesterday. Most major changes to the legislation were rejected, but the process itself was very amusing.

Japanese scientists have taken a standard gas-powered car (the legendary Mazda MX-5 in this case) and converted it to rely purely on solar power to run. This was made possible by the Total Mobility Project, as the team removed the MX-5's engine and gas tank in lieu of an electric motor and battery. Seven solar panels were also installed across the hood of the car, and this setup enabled the vehicle to run at a top speed of 100km/h with a maximum range of 30km. Conversion will hit your pocket hard though, as the entire process will cost $21,000 but for drivers who run an average of 60km a day can save up to $8,400 across the time span of five years. Guess it will take a good 15 years or so before you can start counting your ROI, which by then the car would've probably be sent to the junkyard.

And that allowed me to know that this is something I wanted to do. And then I jumped into it with a strategy I call “Surround the Space” You’ll see that right there in the center is my customer. And then my strategy, slowly, is what do I do to become this person’s vendor.And that allowed me to know that this is something I wanted to do. And then I jumped into it with a strategy I call “Surround the Space” You’ll see that right there in the center is my customer. And then my strategy, slowly, is what do I do to become this person’s vendor.

Solar PV cells convert solar energy in to electricity that is used to charge batteries to provide lights during night. Solar energy has excellent potential in Pakistan that receives high levels of solar radiation throughout the year. Solar Energy is available at a rate of 1000 watts per square meter in Pakistan. This can be converted to DC electricity with the help of Solar Photovoltaic cells, which may be used to pump water, operate fans, TV and telecommunications directly during daytime. The electrical energy generated during the day time (5-8 hours of sunshine), can also be stored in deep cycle lead acid batteries which can be used at night to provide power for lighting, radio, Television and fans. The system will be user-friendly and designed as a stand-alone system for each household, who will be trained to operate and maintain it. The user will only be required to switch on/off the system, as is done in normal home lighting systems. In addition, Solar Photovoltaic Panels can generate enough electricity to pump water from depth of 350 ft, 700 ft and up to 1000 ft.