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Archive for the ‘Solar & Wind Energy’ Category
Solar Energy (Science In Action) [VHS]
![Solar Energy (Science In Action) [VHS]](http://www.ezcooldata.com/blog/wp-content/uploads/2011/02/wpid-51KXHW9NKHLSL500.jpg)
Science is an important but complex subject that often seems overwhelming to kids. Science Rock takes a nontraditional approach to this subject, entertaining kids with upbeat music that features lyrics absolutely packed with information. Simple, accurate descriptions of the human body’s digestive, circulatory, central nervous, and skeletal systems, along with explanations of energy sources, the solar system, and gravity provide the thematic material for eight rock- and blues-inspired songs that kids find immediately appealing. Especially effective are the description of the central nervous system in “A Telegraph Line” and the discussion of nonrenewable energy sources in “The Energy Blues.” Science Rock is a 1995 addition to the multi-Emmy Award winning Schoolhouse Rock! series. It preserves the feel and intent of the original series while offering up-to-date information about modern science. Each 30-minute video in this 25th anniversary collection contains a bonus music video featuring current rock stars singing favorite Schoolhouse Rock! songs–in this case, Better Than Ezra’s rendition of “Conjunction Junction.” –Tami Horiuchi
Price: $19.95
Who Killed the Electric Car?
WHO KILLED THE ELECTRIC CAR – DVD Movie
Price: $14.94
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It begins with a solemn funeral…for a car. By the end of Chris Paine’s lively and informative documentary, the idea doesn’t seem quite so strange. Asnarrator Martin Sheen notes, “They were quiet and fast, produced no exhaust and ran without gasoline.”
Paine proceeds to show how this unique vehicle came into being and why General Motors ended up reclaiming its once-prized creation less than a decade later. He begins 100 years ago with the original electric car. By the 1920s, the internal-combustion engine had rendered it obsolete. By the 1980s, however, car companies started exploring alternative energy sources, like solar power. This, in turn, led to the late, great battery-powered EV1.
Throughout, Paine deftly translates hard science and complex politics, such as California’s Zero-Emission Vehicle Mandate, into lay person’s terms (director Alex Gibney, Oscar-nominated for Enron: The Smartest Guys in the Room, served as consulting producer).
And everyone gets the chance to have their say: engineers, politicians, protesters, and petroleum spokespeople–even celebrity drivers, like Peter Horton, Alexandra Paul, and a wild man beard-sporting Mel Gibson. But the most persuasive participant is former Saturn employee Chelsea Sexton.
Promoting the benefits of the EV1 was more than a job to her, and she continues to lobby for more environmentally friendly options. Sexton provides the small ray of hope Paine’s film so desperately needs. Who Killed the Electric Car? is, otherwise, a tremendously sobering experience. –Kathleen C. Fennessy
Duracell 813-0291-07 175 Watt DC to AC Pocket Power Source Inverter
Pocket-sized unit converts 12V DC power from vehicle battery into 120V AC power, so you can charge or operate laptops, cell phones, iPod , BlackBerry , video cameras and other mobile electronics. Power Supply: 12V, Continuous Watts: 175, AC Outlets (qty.): 1, USB Ports (qty.): 1, LED Indicators: Yes, Low Battery Protection: Yes, High Temperature Protection: Yes, Overload Protection: Yes, Low Voltage Protection: Yes, Cables Included: DC cable with vehicle adapter
Price: $34.99
Using Solar Wind Energy is the Way to Go
By Richard Baxter
Many people today have realized the dream of being completely off the grid by combining wind and solar energy. Small sized affordable wind generators are available today for the home user, and they are being combined with photovoltaic cells for power generation. It’s obvious that fossil fuel energy costs are going to keep on rising making it harder to afford getting power from the grid. The time is more than ripe for solar wind energy to be one of the solutions to rising energy costs, and to take us off of fossil fuel energy dependence.
Wind Turbines
Wind turbines are actually very simple machines. They consist of 3 parts: rotor blades, a shaft, and a generator. The rotor blades act like a propeller that turns the shaft when the wind flows through them. The shaft then turns the generator and a current is generated. About eighty-five percent of all off-grid systems use solar wind energy.
The new micro as well as mini wind turbines are very popular with sailors, and are now starting to be more popular with home owners in Europe and the UK. Mini turbines are very cost effective and will only cost about $1,500 to $2,500. They are perfect for generating electricity if you live off the grid in remote rural areas. It’s satisfying to think about having solar wind energy provide for all your energy needs and also knowing that you never have to depend on utility companies.
Photovoltaic Cells
The typical home solar power system consists mainly of these:
a)Photovoltaic Panels
b)Charge Controller Module
c)Batteries (optional)
d)Inverter
Photovoltaic panels convert sunlight into an electric current. The type of current generated by a photovoltaic panel array is DC or direct current. For this current to be usable in most common households, it has to be converted into AC or alternating current. That’s where the inverter comes in. It’s job is to convert DC into AC current.
Solar wind energy systems are also called hybrid energy systems because the use a combination of solar and wind power to generate electricity. The wind turbines are mostly used during the winter months (in the northern hemisphere) when the sun’s vertical rays are mostly directed toward the southern hemisphere, and days tend to be short and cloudy. During summer months, photovoltaic cells would supplement greatly along with the wind turbine.
By using hybrid solar wind energy systems, a homeowner has the option of using or omitting batteries for storage. Homeowners also have the choice of being “Grid-Tied” or “Net Metered”. This means that your solar wind energy system has the ability to provide electricity not only for your house, but the power company as well. This way, if your solar wind energy system generated more energy than was used, the energy can be sold back to the power company. When you’re selling energy back to the company, your power meter runs backward. The “net metered” system therefore is highly recommended. The grid also works as your “battery backup” when your hybrid solar wind energy system doesn’t provide for your power demands.
Net-metered systems are also recommended because they are easier to install, cost less, and offer better performance.
About the Author: Find out more about how you can save money with solar energy. We provide articles and ideas with many different products for all your needs. From home solar panels to entire home solar energy systems and even solar wind energy systems. The shift to alternative energies is happening now!
Source: www.isnare.com
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