Project Build A Solar Panel: Step by step guide to building a solar panel with complete illustrations Introduction A solar cell's purpose is to generate electricity through the release of electrons from a material that is bombarded by electromagnetic radiation or photons. Most crystalline solar cells are sensitive to visible radiation from 400 - 700 nanometers, which correspond to 3.1 - 1.8 electron volts, of the visible region as shown by ACEPT W3 Group (1999) and also into the near infrared spectrum. As the wavelength of the electromagnetic radiation increases, the amount of electron volts decreases. This means that infrared radiation has less electron volts than the visible spectrum of light (because it has a larger wavelength than visible light) and ultraviolet and gamma radiation has more electron volts than both the visible spectrum of light and infrared radiation (because they have a smaller wavelength than both infrared and visible light). Significance of Solar Panels A solar cell, in itself, is of little value in our energy consumptive world.
Build Your Own Solar Battery Charger First we need an old window, I got mine from a construction site. Its your basic old nasty basement window. Make sure you wash both sides of the glass well with soap and water and window cleaner, more dust means less light gets through to your solar cells. Next take your multi-meter and sit in a sunny spot (or under a flood lamp) and check all your cells to make sure they get about .5 volts per cell. You do this by gently (cells are REALLY fragile) putting the red on the front (make sure its on the little metal lines) and black on the back (any place) of each cell while it is in the sun. It should say about .5 volts. For this project I used 12 cells but you really only need 6. As you can see they all fit with a lot of room left over, if I wanted to I could have used this window for a larger project but I only need a battery charger for right now. Next we get down to the fun part, soldering. There are two ways to wire power supplies (like batteries or solar cells) together.
Intermittent energy source An intermittent energy source is any source of energy that is not continuously available due to some factor outside direct control. The intermittent source may be quite predictable, for example, tidal power, but cannot be dispatched to meet the demand of a power system. Effective use of intermittent sources in an electric power grid usually relies on using the intermittent sources to displace fuel that would otherwise be consumed by non-renewable power stations, or by storing energy in the form of renewable pumped storage, compressed air or ice, for use when needed, or as electrode heating for district heating schemes. The use of small amounts of intermittent power has little effect on grid operations. Terminology Several key terms are useful for understanding the issue of intermittent power sources. Intermittency of various power sources Solar energy Seasonal variation of the output of the solar panels at AT&T park in San Francisco. Wind energy Mark Z. Mark A.
BuildItSolar: Solar energy projects for Do It Yourselfers to save money and reduce pollution How I built an electricity producing Solar Panel Several years ago I bought some remote property in Arizona. I am an astronomer and wanted a place to practice my hobby far away from the sky-wrecking light pollution found near cities of any real size. In my attempt to escape city slicker yuppies (you know the kind, the ones that like to blab loudly on their cell phone while they work on some business administration degree in a cyber cafe somewhere in Trendyland.) and their light pollution, I found a great piece of remote property. I built a wind turbine to provide some power on the remote property. Here is a video of the solar panel set up and in use on my remote, off-grid property. Let me state up front that I probably won't be able to help you out much if you decide to build your own solar panel(s). So what is a solar panel anyway? I started out the way I start every project, by Googling for information on home-built solar panels. After a while, I came to some conclusions: <a href='
How to build a Solar Panel Dirty Energy Money | Oil Change International Torresol Energy - Gemasolar thermosolar plant Gemasolar is the first commercial-scale plant in the world to apply central tower receiver and molten salt heat storage technology. The relevance of this plant lies in its technological uniqueness, since it opens up the way for new thermosolar electrical generation technology. Characteristics of Gemasolar: Rated electrical power: 19.9 MWNet electrical production expected: 110 GWh/year Solar field: 2,650 heliostats on 185 hectaresHeat storage system: the molten salt storage tank permits independent electrical generation for up to 15 hours without any solar feed. The prolongation of the plant's operating time in the absence of solar radiation and the improvement in efficiency of the use of the heat from the sun makes Gemasolar's output much higher than that which is delivered by other technologies in a facility with the same power. The notable increase in the plant's power efficiency guarantees electrical production for 6,500 hours a year, 1.5 to 3 times more than other renewable energies.
300w pedal generator High power Pedal generator (300 watts) 15/04/10 Click image for Hi res version This is my latest attempt at building a highly efficient powerful pedal generator. Pedalling a stationary bicycle can at times be a little tiresome therefore I wanted to make an as efficient as possible pedal generator so for every joule of energy I exert I then harvest the maximum amount of power out. Some of the pedal generators I have made in the past have been rather inefficient with a typical output of around 100 watts. My earlier pedal generator projects here An excellent article on the various types of hub motors available here These hub motors can be purchased for around 50-100 for a second-hand unit, they occasionally appear on eBay, and local bike shops. The hub motor of course needs to be a rear wheel type ideally with a multi gear freewheel sprocket attached. For further discussion on this subject we have a very active forum with a human power generator section here
DIY Thermosyphon Solar System Search The Renewable Energy site for Do-It-Yourselfers System schematic -- Thermosyphon Solar Water Heater As shown in the schematic, when sun is on the Solar Panel, the water in the panel is heated, becomes less dense and rises up into the Storage Tank. Sun and gravity take care of the circulating the water, so no pump is needed. The system as shown here does not have freeze protection, so it must be used in non-freezing climates, or be drained for the winter. Building the Collector I used a roll of aluminum 10 " wide, which I cut to length and fit under the tubes. There is a 3/4 insulation sheet behind the plywood and another thinner plywood on the back to protect the insulation sheet. There are two sheets of sun tuf corrugated polycarbonate on top. For more more construction details on on a similar type of collector construction here... and here... Collector Installation Some more pictures of the finished collector. Storage Tank and Plumbing Click on pictures for full size Results To Date
Top Five Air Powered Vehicles If the Cash for Clunkers incentive wasn’t enough to curb your unsettled feeling about owning a new gas guzzler, you might want to start saving for one of these truly awesome air-powered eco-rides. Sometimes called PHEV (pneumatic-hybrid electric vehicle), these cars are most typically powered by a compressed air engine combined with an electric motor. The engines are similar to steam engines as they use the expansion of externally supplied pressurized gas to perform work against a piston. Don’t settle on a fuel/electric hybrid or a biofuel burning vehicle before you take a look at our list of top 5 air powered vehicles that will soon be available in the United States. 5. For the sports car lover who also wants a zero-pollution vehicle, take note of San Jose Club Auto Sport, who claims to be developing the first Magnetic Air Car. 4. 3. 2. Unveiled at the 2008 New York Auto Show, the OneCat from MDI has a style that may win over the Mini and Smart Car owners. 1.
Bicycle Pedal Power Generator FAQ Frequently Asked Questions If you are interested in buying a bicycle generator already built, then click here Lets' say i want to power a 400w high pressure sodium grow lamp and to leave it on for 18 hours per day how long would I have to cycle for how would i even rig a 400w hps bulb to that and store the energy ??? The first step to find the answer to your question is to make some assumptions: 1- Assume you want to power your grow lamp from a 12 Volt deep cycle battery . 2- Assume you are going to use an AC Inverter to convert 12 Volt battery Voltage to the operating Voltage of your Grow lamp which is most likely 110V AC. Next consider how many Amps will be drawn from the 12 Volt battery when the grow lamp is running through the inverter. The problem with this setup is that it only will light the grow lamp if people are pedaling. So if a person had 5 100 Watt solar panels that he / she could connect to the combiner box, then that would provide an extra 40 Amps of charging current for around 6 hours a day.